| python476 | radiometer + laser = hnnng https://youtu.be/viJ3T-1KZqY?t=736 |
| electrobot | python476 just linked to www.youtube.com (Sprengel Vacuum Pump: The most efficient pump ever? - YouTube) |
| linux_probe | this seems more fitting a link to post.. https://www.cpsc.gov/Recalls/2018/Kidde-Recalls-Fire-Extinguishers-with-Plastic%20Handles-Due-to-Failure-to-Discharge-and-Nozzle-Detachment-One-Death-Reported |
| jaakkos | damnit wasted 2 evenings on this silly issue |
| jaakkos | got new PCBs, assembled them and noticed the current draw is randomly 1-2mA while it should be < 10uA in sleep... |
| jaakkos | forgot SPI MISO in high impedance mode and configured as input on MCU |
| jaakkos | as a CMOS input that draws a lot of current randomly |
| jaakkos | silly I didn't catch it faster because I knew about it... it just never triggered on me before :) |
| kmc | oh well, I will be fashionably late. |
| jsoft | FRIDAY! |
| kmc | still thursday here bro |
| jsoft | Went to an island on a boat, minced around on island, came back in bigger boat, 3 hour work day ftw. |
| kmc | Thursday Night Drinking |
| Goatman | Does anyone here use an electric blanket? Are there any good ones? |
| jsoft | Goatman, You mean a heater electric blanket? |
| Goatman | Yeah you sleep under them |
| Goatman | or on them |
| jsoft | I hear they are good for catching houses on fire |
| Goatman | Well then fuck yeah, This house is insured |
| jsoft | :| |
| jsoft | Why not just use a bigger duvet |
| Goatman | Goatie’s got to get to Switzerladnd |
| Goatman | *Germany |
| Sculptor | do you have a strong bladder |
| jsoft | How do you know if you have a strong bladder |
| Sculptor | do you wet your bed |
| jsoft | lol |
| Sculptor | you don't want to wet your electric blanket |
| jsoft | does any adult? |
| e36freak | makes it warmer |
| kmc | wait till you really have to pee then have a friend punch you in the abdomen repeatedly |
| jsoft | Hah! :D |
| jsoft | That sounds like a great idea to do to someone |
| Sculptor | ere these fishing glasses good https://www.amazon.de/Gamakatsu-G-Glasses-7128043-Polbrille-Polarisierungsbrille/dp/B00ORQKKEY |
| Goatman | jsoft, you don’t like electric blankets? They save on gas |
| Goatman | Why heat your whole house up when you just need comfy time? |
| jsoft | Goatman, because you dont even need electric blankets or gas to sleep warm |
| ak1ndnerd | Hi everybody |
| SpeedEvil | New electric blankets are really safe. |
| SpeedEvil | Even the very cheap ones have several safety features |
| kmc | best heater for your bed is another person >___> or two |
| SpeedEvil | Or a dog. |
| bobo1on1 | I usually fart under the blankets |
| Chinesium | I mine cryptocurrency to stay warm at night |
| kcrow | I like the blankets that have gas |
| bongofury | that article said 1 btc transaction costs as much as a week's worth of household energy |
| Goatman | I have dog but need electric blanket to stay warm |
| gurki | Goatman: no. you just need one or two additional blankets :) |
| SpeedEvil | blankets don't do the same thing |
| SpeedEvil | electric blanket can mean bed is warm to get into, and allow you to sleep comfortably much colder. |
| SpeedEvil | It's been down to 6C, with me being too hot, with an electric blanket and a thin blanket |
| SpeedEvil | on 40W or so |
| jsoft | A semi reasonable duvet should see you warm even in 0 degrees |
| jsoft | Are you cold blooded or something |
| kmc | can all nail polish be UV cured or only that gel stuff? |
| pfred1 | I imagine UV would dry anything out |
| kmc | what about IR? |
| pfred1 | my shiny new schematic capture program seems to have a bug in it |
| pfred1 | I'm on the "Composant" layer https://i.imgur.com/r2L9mwc.png |
| durrf | in languages other then english thats what components are called, or it is in french at least |
| durrf | probably a localization issue |
| pfred1 | yeah but I didn't compile it in French |
| pfred1 | no they're fucked up |
| pfred1 | dumb assed Frogs |
| superkuh | What if they're Swiss? |
| superkuh | Seems more likely. |
| superkuh | Given kicad's funding and contributors. |
| pfred1 | in the last version it was right |
| pfred1 | this project is a shining example of why FLOSS doesn't catch on in the mainstream |
| pfred1 | it is a seaming pile of shit to get to build |
| pfred1 | steaming even |
| superkuh | I just use a PPA with nightlies. |
| superkuh | Someone else's problem. |
| pfred1 | when i told them I'd built it they told me it was impossible |
| pfred1 | at least on my version of Debian that I run |
| superkuh | So that's why you're talking about it on ##electronics instead of #kicad? |
| pfred1 | which is to say there is no build available for me |
| pfred1 | superkuh you do know what kicad is don't you? |
| superkuh | I've made multiple boards with it, yeah. |
| pfred1 | superkuh yet you fail to see the relationship it has with electronics? |
| superkuh | I'm just sayin', these particular kicad issues would really be better addressed there since they're not actually electronics issues. |
| pfred1 | superkuh did someone superglue a dunce cap to your skull or do you put it on religiously every day? |
| superkuh | Could be. |
| pfred1 | superkuh why do you think I haven't already? |
| superkuh | That was implicit in my statement about why you're talking about it here, where there'll be no help or fixes, versus where you've probably already insulted them and realized it was useless to keep talking. |
| pfred1 | superkuh you should STFU before you prove beyond all shadow of a doubt how low IQ you really are |
| kcrow | Cadence makes some useful products |
| kmc | superkuh: I like your nick :) |
| jsoft | Is this a nerd fight? |
| superkuh | Nah, I think we're done. kmc, thanks. |
| jsoft | Im running the latest kicad now, it has a via button! :D |
| kmc | nerd fiiiiiiiight! |
| kmc | ACTION equips slide rule |
| jsoft | ACTION deploys a 15C |
| jsoft | I actually love my 15C. |
| kcrow | ACTION fires up the HP-41 |
| jsoft | I have two. |
| pfred1 | this was the latest when I started building it they could have released a new one eince then though |
| jsoft | pfred1, what is the problem? |
| jsoft | Oh the composant layer? Wtf does that mean |
| pfred1 | it is French |
| jsoft | Are you having problems with it or something? |
| pfred1 | it is just annoying |
| jsoft | Yeah it can be annoying. |
| jsoft | but its also free and works on loonux. |
| pfred1 | it makes FLOSS look bad |
| Bird|otherbox | my conclusion is that basically all EDA tools are going to be annoying in some way or another |
| jsoft | I don't see how |
| kmc | Bird|otherbox: me too |
| jsoft | ( it makes FLOSS look bad ) |
| pfred1 | its slipshod |
| kmc | L I N U X |
| jsoft | Yeah like I found altium annoying too |
| kmc | lol |
| kmc | they all have their quirks |
| kcrow | call up Cadence |
| kmc | maybe one day we will have the perfect EDA |
| kmc | probably not |
| jsoft | I like kicads 'yeah well whatever just assign a footprint later' deal |
| Bird|otherbox | jsoft: it actually makes a fair bit of sense because trying to tightly bind schematic symbols to footprints is nonsensical for a lot of more-standardized parts |
| jsoft | Bird|otherbox, yeah :) |
| Bird|otherbox | (and also combinatorially explodes your parts lib) |
| basuotoko | Morning. |
| Drakonite | the annoying bit is that it doesn't handle when the footprints use different pinouts |
| jsoft | What do you mean different pinouts |
| pfred1 | I hear they're overhauling the whole library mechanism |
| pfred1 | they know it is a hot mess |
| Drakonite | that'd be a surprise to me |
| jsoft | Yeah thats the penis with kicad, it's a bit of a cunt to do library things |
| Drakonite | (but a good surprise) |
| pfred1 | it may be fixed when 5 comes out? |
| Drakonite | I audited the entire atmel lib... can confirm it's a bit of a cunt |
| pfred1 | hey I remember when EDA used to crash before I could get 3 steps into a tutorial |
| pfred1 | now the software is at least usable |
| jsoft | Speaking of kicad, I sent away my doofertron 5000 edition board the other day |
| pfred1 | I think it took them 12 years to get to usability |
| jsoft | Its a board which just goes on top of a nucleo 144 F7 board, and just provides input protection for a signal ( siggen ) and buffered output via RC, LC, or raw filters, and sample clock and reference. For a digital filter stuff. |
| Bird|otherbox | I've seen Cadence stuff blow up spectacularly before |
| pfred1 | buffering is nice |
| pfred1 | I need to figure out how to do the trace push in kicad |
| jsoft | pfred1, isnt it just right click, routing options? |
| pfred1 | jsoft beats me i just got the stuff running I'm not seeing it i hear it only works in GL |
| jsoft | :| |
| jsoft | Ok |
| pfred1 | then again default seems to have a lot more options to me |
| pfred1 | I donno I saw someone do it in a YouTube video I can't seem to manage it myself yet |
| pfred1 | I can't tell if i don't have Cairo view or it is just really slow |
| pfred1 | it ain't looking good |
| Hooloovo0 | I'm looking to minimize a boolean function, and XOR is as cheap as AND and OR, which is not usually an assumption that's made |
| Hooloovo0 | anyone know of anything that'll (near-)minimize that? |
| jsoft | Sorry, minimize what? |
| Mad7Scientist | gurki, If you're paid by the hour then you can take a really long time to do the analog+digital simulation |
| Hooloovo0 | I have a function of several binary inputs that map to one output |
| Hooloovo0 | https://en.wikipedia.org/wiki/Logic_optimization |
| DocScrutinizer05 | bitching about bugs in kicad nightlies doesn't make much sense really |
| jsoft | DocScrutinizer05, I want my money back! |
| tgeeky | joe_z: if you're there, I have some results left from last night |
| pfred1 | DocScrutinizer05 who did that? |
| joe_z | tgeeky, yep |
| tgeeky | joe_z: I stated this before I went to bed, but the two protection transistors did nothing to help; but then I hooked up a 1M 0.1% resistor and hooked up the scope probe across R110 again, and noticed that it sort of stabalized again (although to a wrong value, 1.222 Mohm); but once I hooked up *only* the LO sense lead (the HI sense lead did not matter), it stabalized to the exact value (0.9999921 Mohm) |
| stairmast0r | should thermal paste be applied by spreading or drop+squish for direct silicon contact? |
| tgeeky | joe_z: I don't know what it means, but I suspect this will somehow lead me/us/whomever to whatever the problem is, since it's quite a lot of specific information |
| pfred1 | stairmast0r that's a debate I am in the thin film spread camp myself |
| pfred1 | thermal paste is only supposed to make up for surface imperfections between mating parts |
| tgeeky | joe_z: there is, of course, a lot of AC hum sitting on the unconnected lines, but this isn't/wasn't normally a problem |
| pfred1 | microscopic pores and what have you |
| pfred1 | a layer of paste is just another thermal resistive layer |
| tgeeky | joe_z: but there must be some noise being picked up by LO sense, and somehow connecting it and killing this noise must be helping. |
| joe_z | tgeeky, well LO sense is tied to LO by a 220K resistor according to the schematic |
| joe_z | is that resistor open maybe? |
| tgeeky | joe_z: it is not, I checked that again last night |
| joe_z | and it measures the correct resistance as well? |
| tgeeky | joe_z: I do need to carefully check all of those solder joints up there, perhaps one of them is dead |
| tgeeky | joe_z: yeah |
| pfred1 | tgeeky there are bench techs that relow all solder joints before they even start troubleshooting |
| tgeeky | joe_z: the only thing I thought of last night, is that perhaps something that's connected to LO is actually dead (a trace or part, or CR105, or CR106) |
| joe_z | yeah, we had a keithley that was doing some weird stuff due to a bad solder joint on the input jacks |
| tgeeky | joe_z: if the bridge rectifier was dead on the LO |
| tgeeky | joe_z: actually that's a good point (the one I made) |
| joe_z | ohms is also the only range that will make full use of the sense inputs generally |
| tgeeky | joe_z: yep |
| tgeeky | joe_z: i just thought though: imagine that the LO traces are actually broken, or the bridge rectifier on that input is partially dead; then the only way anything gets any reading is through the LO SENSE input -- this doesn't explain voltages, but perhaps anything with voltage or current has enough potential to bypass the problem |
| tgeeky | joe_z: or, in general, perhaps all readings all the time have been being made through the LO sense terminal, and that might explain the discrepancy between 1M and 1.2M |
| joe_z | tgeeky, I'm guessing that something on the LO sense terminal might be 'leaking' and pulling that voltage around |
| joe_z | by directly connecting to LO, you eliminate an I*R drop across the 220K maybe |
| tgeeky | joe_z: I of course have not been hooking up the LO SENSE terminal on voltage readings, but anything I did hook up could just bypass onto the LO SENSE, or maybe the signals are strong enough to get through the broken bridge rectifier input |
| tgeeky | joe_z: yeah... |
| joe_z | but that only makes sense if there are no other resistors between there and the destination circuitry |
| tgeeky | joe_z: anyway, someting to go on! exciting! |
| tgeeky | joe_z: well, the LO SENSE line goes: (input) -> R110 (where I was connecting the scope probe) -> Q112 |
| joe_z | tgeeky, and also that switch |
| tgeeky | joe_z: the LO path goes (input) -> (bridge rectifier) -> (fuse (is ok)) -> oh.. no, it goes nowhere |
| joe_z | could the switch have arced over when you applied the bad input? |
| tgeeky | it goes to AMPS switch |
| joe_z | maybe it's got carbon tracking now? |
| tgeeky | joe_z: maybe. I know the OHMS switch is fine. Maybe the amps switch is shorted or something |
| joe_z | tgeeky, how are you so sure the ohms switch is fine? |
| tgeeky | joe_z: I tested all the contacts in all the positions |
| tgeeky | and tested what they look like when they are not connected to anything |
| joe_z | tgeeky, sure maybe it turns *on* alright |
| joe_z | but maybe it doesn't fully turn off |
| tgeeky | joe_z: I tested that too, all the breaks happen |
| tgeeky | on the ohms switch, at least |
| joe_z | even about a Mohm between two contacts could be significant here |
| joe_z | when they should be off |
| joe_z | I'd say look at the voltage across R124 (the 220K) |
| tgeeky | joe_z: if I have to, I can take the switch apart and test it, but the meter I have (handheld) can read up to about 40M |
| tgeeky | joe_z: look at the voltage during resist measurements? |
| joe_z | yeah |
| tgeeky | ok |
| tgeeky | joe_z: I just notice, the path that voltage/resist must take through the LO jack goes |
| tgeeky | input -> one side of R123 -> R118D -> R118E -> voltage switch |
| tgeeky | I have never tested any of that |
| tgeeky | and that normally (when V switch is OUT) connects to signal ground! |
| joe_z | tgeeky, that's on the wrong side of R124 to seemingly make a difference though |
| joe_z | but maybe |
| tgeeky | joe_z: remember though, normally I am not connecting LO SENSE at all |
| tgeeky | when I did connect LO SENSE, is when it finally worked right |
| joe_z | right |
| joe_z | which suggests LO SENSE != LO |
| joe_z | but that can only happen if there's leakage on the LO SENSE side |
| tgeeky | but more importantly, without my hack of doing something to stabalize R110 to ground (oscilloscope probe, or just a 1M resistor), nothing reads at all |
| tgeeky | which is like the LO doesn't connect to anything |
| tgeeky | anyway, i have a bunch of things to check |
| tgeeky | joe_z: overall, this might be good news though. If resistance measurements are this close to being correct, perhaps whatever this remaining problem is, is the last problem with the meter, and perhaps it will be back to calibration when i fix this last one |
| tgeeky | e.g. the small-ish errors in voltage and current measurements might correct themselves too |
| joe_z | tgeeky, have you checked to make sure adjacent poles on the multipole switch aren't shorted? |
| joe_z | the resistance mode switch |
| tgeeky | joe_z: yes, so from the perspective of the four outputs, all four inputs work, all four non-inputs are OL, in both positions |
| joe_z | did you check between sets of contacts though? |
| joe_z | say from pin 5 to pin 8 |
| joe_z | like I said, I'm kind of worried about carbon tracking now |
| tgeeky | joe_z: what is carbon tracking? the idea that the metal exploded and there are bits in there? |
| joe_z | tgeeky, something arced over, heat turned nonconductive hydrocarbons into conductive carbon |
| tgeeky | 5 and 8 are on on opposite sides of the switch, I don't think it's possible for them to connect |
| joe_z | now there's a 'track' there where it arced over |
| tgeeky | oh, through the plastic |
| tgeeky | i'd be surprised. I will fully check out that switch first thing. so I need to exhaustively check every pin to every other pin? |
| joe_z | OK, but multiple sets of contacts in the switch may be interfering with each other is what I'm trying to say |
| joe_z | tgeeky, yeah, ideally |
| tgeeky | ok. I'll do that. should only take a few min |
| joe_z | or, just pull it, and put some wires in for 'ohms' mode and see if it goes away |
| joe_z | tgeeky, I believe you said you had a high voltage mishap that broke this meter, right? |
| tgeeky | pulling it is basically a two hour job, the entire bank of switches more or less is one unit, and I'd have to remove a handful of other parts like the shunt resistors |
| tgeeky | joe_z: it was basically a ground loop problem with AC voltage, in that I had hot/neutral reversed relative to HI and LO on the meter |
| tgeeky | and the meter was grounded through the display through an arduino through my computer |
| joe_z | mhm |
| tgeeky | things that died: the arduino, the display, a random smattering of ICs, the instrumentation chip |
| joe_z | yeah, that makes me wonder if a switch arced over |
| joe_z | if it did, like I said.. |
| joe_z | could be some other signal from the ohms switch leaking into the R110 area |
| tgeeky | i'll find out soon enough |
| joe_z | maybe a 1M probe is enough to kill it |
| tgeeky | joe_z: obviously i wasn't in ohms mode when I did that |
| tgeeky | i was in AC volts |
| joe_z | right |
| joe_z | and then the 1M scope probe itself causes loading of the LO SENSE causing wrong values |
| tgeeky | (I say obviously, if I'm stupid enough to blow up a meter that way, perhaps nothing is obvious) |
| joe_z | but by bypassing the 220K and shorting LO SENSE and LO, you fix the loading issue |
| tgeeky | joe_z: but, of course, without the scope probe, I get no measurements at all (just OL) |
| joe_z | yeah |
| pfred1 | I've blown a pile of meters up |
| pfred1 | it happens |
| joe_z | it's a curious problem, but the fact that this 'solves' it seems to suggest something weird MUST be going on at that R110-R124 junction |
| pfred1 | I'm at the point where I won't do a current measurement with a meter i care about until I check it first with a throw away meter |
| joe_z | something there is screwing up the reading |
| tgeeky | pfred1: and certainly a bench meter like this one |
| joe_z | pfred1, well blowing the fuse isn't blowing the meter up |
| pfred1 | I donno I've roasted meters and the fuse didn't save them |
| joe_z | pfred1, you're buying shitty meters then |
| tgeeky | pfred1: the real problem is that I was programming the arduino to add a data logging mode to the display, and recording data. I should have remembered that there isn't isolation: especially because this thing has a GPIB card, and its inputs are optoisolated |
| pfred1 | no doubt |
| joe_z | meter's that aren't shitty cost more than $50 |
| pfred1 | yup |
| joe_z | that's just barely getting out of 'shitty' |
| pfred1 | yeah 'm not buying any fluke meters |
| joe_z | my ~$120 BK precision from years ago was saved by fuses when measuring current |
| joe_z | and I once shorted out a lead acid battery with it |
| pfred1 | I toasted my B&K |
| tgeeky | it's unfortunate that the gold standard is still fluke/agilent, and both of them have had a range of very serious QC problems somewhat recently |
| pfred1 | it was a nice meter though |
| tgeeky | this keithley is awesome |
| tgeeky | 220,000 counts |
| joe_z | keithley's are good |
| joe_z | owned by agilent now IIRC |
| tgeeky | from 1980s |
| tgeeky | joe_z: owned by tektronix unfortunately |
| joe_z | oh, yeah |
| joe_z | one or the other |
| tgeeky | though they still are some of the best in the world meters (the DMM7510 is fucking amazing) |
| joe_z | my dad has a keithley 2000 |
| tgeeky | and their source meters are super, super, super awesome |
| jsoft | what is a source meter? |
| pfred1 | for what i do I don't need anything awesome |
| joe_z | it was thrown out b/c of a bad solder joint on the input jack we think |
| joe_z | we didn't notice it for a long time |
| tgeeky | jsoft: a source meter is a device is a four quadrant power supply along with a very high precision multimeter at the output |
| tgeeky | jsoft: so it can (source, sink) (voltage, current) and measure (voltage, current, resistance) |
| jsoft | Oh you mean it senses the voltage at the load with two other sense wires? |
| tgeeky | jsoft: no |
| jsoft | Oh a meter |
| tgeeky | jsoft: it also does that, but that's not it |
| pfred1 | I got a UT61-E now and it is fine for what I do |
| jsoft | So same thing but measures voltage with the sense wires at the load instead of terminals? |
| tgeeky | jsoft: it's much more than just that. it's not about sensing, it's about compliance (which is the term keithley uses) |
| jsoft | Oh ok |
| pfred1 | I'm not tuning satellite receivers or anything like that |
| tgeeky | jsoft: i think it's helpful to think about other equipment and then understand what they add |
| joe_z | the jacks on my BK precision finally wore out and started to break |
| joe_z | I repaired it once, but I don't know if it'll hold very long |
| tgeeky | jsoft: imagine you have a power supply which is very good, and can provide, you know, regulated constant voltage or constant current mode |
| jaggz | https://en.wikipedia.org/wiki/Year_Without_a_Summer |
| joe_z | I upgraded to a Beckman Industrial 4410 |
| pfred1 | that was practically this year here |
| joe_z | it's a bit battery hungry |
| joe_z | 4.5 digit handheld |
| tgeeky | jsoft: presumably, it can also readback what it's doing (in other words, if you set it to provide 10.000 volts it can see that it's only providing 9.9500 volts and adjust to compensate) -- this is sensing |
| tgeeky | jsoft: but it can also do the same thing even if the supply is turned off |
| tgeeky | jsoft: so this is just a powersupply with readback |
| jsoft | Riight |
| jsoft | perhaps I should just google it :D |
| pfred1 | I have a busted beckman HD 101 |
| tgeeky | jsoft: then, you make the power supply two quadrant (in voltage): it can internally provide a positive or negative voltage without the need to swap leads |
| jsoft | Ok |
| tgeeky | jsoft: that's not super special, I'm sure power supplies that do this can be bought |
| jsoft | So what is it used for ? |
| pfred1 | it is a good random number generator now though |
| tgeeky | jsoft: but then you also make it two quadrant in current: it's a power supply and an electronic load; |
| tgeeky | jsoft: it's used for basically anything you want, but most often it's used to characterize devices, like transistors, diodes, LEDs, etc |
| joe_z | one of these days, I should bring the beckman to one of the labs here and check it against a calibrated meter |
| jsoft | So some multi purpose gizmo? |
| pfred1 | I have a voltage reference |
| tgeeky | jsoft: yeah, any lab which is creating transistors or other ICs, or dealing with optoelectronics, probably has one |
| jsoft | Oh ok |
| jsoft | So I really have not business concerning myself with one? :D |
| tgeeky | jsoft: it can be used as: a multimeter, an electronic load, an ideal voltage supply, and ideal current supply, and ideal current and voltage sinks |
| jsoft | So its an amazeballs doofer |
| tgeeky | jsoft: not unless you want to part with a couple thousand dollars, no |
| tgeeky | even 20 year old ones are $2k-3k |
| jsoft | I really want to buy a spec an next |
| tgeeky | jsoft: if you are in the US at least, you can get pretty amazing specans for like $300 - 500 |
| kmc | beckman |
| tgeeky | i got an agilent e7495a which is pretty freakin awesome |
| kmc | he gave a fuckload of money to my school |
| kmc | so there are like 4 buildings named after him |
| kmc | lol |
| jsoft | Yeah I am in NZ so I would have to pay out the ass for shipping |
| tgeeky | jsoft: yep :( |
| pfred1 | kmc maybe beckman can fix this meter of his? |
| jsoft | tgeeky, I need to get one though. For reasons. |
| kmc | they do this thing where they divide up one actual building into 3 or 4 notional buildings so they can sell off more namings |
| kmc | rofl |
| kmc | meanwhile mark fucking zuckerberg pasted his name on SF General Hospital |
| kmc | they keep sending me a bill for $0.00 |
| pfred1 | pay up! |
| jsoft | My shitbox hantec scope can do FFT stuff, but not a candle on a proper specan |
| kmc | I guess I should send them a check for $0.00 |
| tgeeky | jsoft: the thing about specans is that you can't really afford to skimp, because the difference of, say, a few dB can mean 10x or 20x the power |
| Spirit532 | Guys, I have the most amazing engineering fail |
| kmc | I probably owe them like $0.000000000039 due to floating point error |
| Spirit532 | I just acquired a $70 000 camera |
| Spirit532 | It is run by a JAVA WEBAPPLET |
| Spirit532 | (that doesn't launch) |
| Spirit532 | (that is screwed to death) |
| jsoft | tgeeky, I thought you could zero them ? Or are you saying shit ones don't give a linear measurement |
| kmc | people should not use floating point for money quantities, but they do, all the f'ing time |
| tgeeky | jsoft: nonlinear, yeah |
| pfred1 | Spirit532 I had trouble with a java TV in a fleabag motel over the summer |
| Spirit532 | Let that sink in. $70k worth of hardware |
| Spirit532 | On JAVA. |
| pfred1 | 3 reboots and it worked |
| tgeeky | jsoft: you have to have linearity over a huge range, of you know like 100 dBm |
| Spirit532 | I'm root on the fucking thing |
| kmc | Spirit532: I've used scopes that cost that much and run Windows Vista |
| Spirit532 | There ain't no saving it |
| Spirit532 | I will either hire a java dev to unfuck this, because I hate the language with a passion |
| Spirit532 | Or rewrite it in C/C++ or C# |
| jsoft | tgeeky, ahh ok fair enough. 100 db is a lot. Imagine 100db on top of the price of a coffee for example :D |
| kmc | can you use a non Java JVM language and thereby not have to rewrite it all at once? |
| pfred1 | hate the language with a pastebin! |
| tgeeky | jsoft: from a cup of coffee to the whole starbucks corporation for its entire lifecycle |
| jsoft | Argh java |
| kmc | Kotlin, Clojure, Scala all seem pretty okay |
| Spirit532 | kmc, it's a webapplet that you download |
| Spirit532 | but it crashes on PC |
| kmc | hm |
| kmc | lol |
| kmc | Spirit532: rewrite it in Rust! |
| kmc | ACTION dodges thrown fruits |
| jsoft | What is all this rust business |
| Mad7Scientist | Spirit532, can you write a program to convert java in to C++? |
| jsoft | I've not looked into rust, whats the jive with it? |
| Spirit532 | I can |
| kmc | jsoft: it's a new lang, like C++ but with less baggage |
| Spirit532 | It will take me a year to implement |
| pfred1 | something just installed rust on my PC so I guess it's done now |
| Spirit532 | Rust is bad |
| kmc | and more safety, which is mostly enforced at compile time |
| ozzzy | ACTION has pretty much switched to VB.net |
| kmc | it compiles to native code same as C or C++ |
| kmc | no GC |
| jsoft | kmc, ahh ok. |
| kmc | no "runtime" any more than C and C++ have (which is non zero) |
| Spirit532 | C# is the easiest of them all in my opinion |
| Spirit532 | simple, quick |
| kmc | it works on micros too |
| jsoft | kmc, I am pretty happy with C to be honest, but I guess worth a look |
| ozzzy | you can switch back/forth from C# |
| kmc | that's one of the main reasons I'm excited |
| Mad7Scientist | ACTION drowns ozzzy in Windows 10 |
| tgeeky | all of your languages suck compared to haskell |
| tgeeky | and you all know it |
| Spirit532 | if anyone here knows Java |
| kmc | jsoft: Rust is very much more complicated than C. it's almost as complicated as C++, but you get more value for that complexity |
| Spirit532 | I'll give you a few beer cases if you can make it run |
| jsoft | nope, they all such compared to erlang, and you know it |
| tgeeky | bah |
| kcrow | Forth is the good stuff |
| tgeeky | erlang has whole domains that it can't serve |
| kmc | I wanna run forth on my bluepills |
| jsoft | Spirit532, ok beer? What is the problem |
| kmc | this has been done |
| tgeeky | anyway |
| kmc | ACTION afk |
| Spirit532 | jsoft, a pallet of beer |
| kcrow | pillz ! |
| ozzzy | the best language is 8051, 65xx or 68xx assembler |
| Spirit532 | if you can get a java jnlp webapplet to run |
| pfred1 | I just figure out how to compile code i don't write the stuff |
| Spirit532 | on windows 10 |
| jsoft | tgeeky, I found it uber usefull in a recent lora project |
| Spirit532 | and control a camera |
| ozzzy | x86 assembler wasn't nice |
| Spirit532 | the applet and dependencies are not obfuscated or encrypted |
| Mad7Scientist | WHy are they killing java and flash? They are the most efficient interactive browser platforms available. |
| Spirit532 | >efficient |
| pfred1 | ozzzy that's the one language i actually could program in |
| Spirit532 | excusemewhat |
| ozzzy | Mad7Scientist, because PERL and PHP are better |
| ozzzy | [grin] |
| Spirit532 | Java hogs memory like nothing else |
| Mad7Scientist | PHP is just about the slowest interpreted language that exists |
| tgeeky | they are killing flash because it's proven to be impossible to make secure |
| ozzzy | pfred1, what... MASM? |
| pfred1 | ozzzy yup |
| kcrow | #!/usr/bin/ksh |
| Mad7Scientist | Java is as fast as compiled C++ with several times the memory usage |
| jsoft | tgeeky, processing the messages. Sooo easy to just go 'oh yep, well this device is a little endian, this one is a big, so yeah whatevers, all good' and binary pattern matching and processes for africa which is like OO kinda but procssess oriented |
| ozzzy | Mad7Scientist, we have 'supercomputers in a small box'... who cares how slow the code runs |
| pfred1 | ozzzy until my floppy disk set died |
| Mad7Scientist | ozzzy, I do |
| pfred1 | I liked MASM |
| jaggz | today is the birthday of the United States. Traditionally it is celebrated by attempting to blow up or burn a small part of it with fireworks |
| jsoft | Mad7Scientist, yeah but PHP is simple |
| ozzzy | Mad7Scientist, just add processors |
| tgeeky | jsoft: yeah, it's awesome for similar kinds of things it was originally designed for, which is high-reliability communications protocol handling |
| pfred1 | it had a nice color scheme |
| Spirit532 | I've sent about 15 emails and 8 inquiry forms now, to various people that own or have owned the same camera in the last 10 years |
| ozzzy | LOL... so did QuickC |
| Spirit532 | I've yet to receive a single reply, except from a very nice individual in Germany |
| Mad7Scientist | IF I reload a forum website 30 times per second it brings down the whole PHP site |
| Spirit532 | who is trying his best to help |
| jsoft | tgeeky, yeah :) |
| pfred1 | tan and black as i can recall? |
| Mad7Scientist | bitcoin-talk.org is often unresponsive despite running on a super computer in a box |
| ozzzy | ACTION wrote a .h file for a buddy that knew PASCAL but wanted his stuff compiled in C... so he could basically program in PASCAL and the header turned it into ANSI C |
| jsoft | ozzzy, how does that worjk |
| jsoft | Spirit532, yeah fuck that. |
| pfred1 | Mad7Scientist cycles are money |
| ozzzy | it takes some fiddling... you need the main() etc |
| jsoft | Spirit532, windows 10, AND java? No |
| Spirit532 | I'll downgrade to 7 or xp if you can make it run |
| jsoft | Well why is it not running? |
| Spirit532 | Errors |
| jsoft | Or the symtoms or whatever |
| Spirit532 | So. Many. Errors. |
| ozzzy | but you write a PASCAL function... and the header takes the syntax (input, output etc) and maps it to a C function |
| pfred1 | operator error! |
| jsoft | So a standard java install then |
| Spirit532 | I think it's an x86/64 problem at the core SOMEWHERE |
| Spirit532 | it dies around a third-party(camera mfg) dependency |
| Spirit532 | dpwalker says it's x86 |
| pfred1 | deep 86ed |
| Spirit532 | BUT it does on x32 win7 as well, apparently with the same issue |
| jsoft | Nah fuck, I cant help you. I've got no time to be delving into java bullshit. |
| jsoft | Well I have time, but no motivation. |
| Spirit532 | thing is - it's just a fucking directx plugin it crashes at |
| Spirit532 | I don't care about it an want it gone |
| Mad7Scientist | Spirit532, it only works on an Android / iOS browser? |
| pfred1 | direct hex |
| Spirit532 | iOS didn't exist when this camera was made |
| jsoft | Spirit532, so you have changed versions of direct x and all that shit? |
| Spirit532 | jsoft, few cases of beer |
| Spirit532 | or pallet |
| Spirit532 | :) |
| jsoft | Spirit532, I already have beer and pallets. |
| cheater | hi |
| Mad7Scientist | Spirit532, you have a camera with custom Windows software and the software is crashing? |
| Spirit532 | pallets of beer? |
| jsoft | Or do I mean pallet |
| jsoft | the food pallet |
| cheater | can i use a 150W ballast with a 100W metal halide light bulb? |
| Spirit532 | Mad7Scientist, it's stored on the camera |
| Spirit532 | you visit /applet.jnlp |
| Mad7Scientist | Can you program it down to 100W? |
| Spirit532 | it runs in Java Web Start |
| Mad7Scientist | Ahh I see. Do you have to have the java plugin installed? |
| cheater | Mad7Scientist: no. it's fixed at 150W. |
| tgeeky | i'm not sure he wanted our help to fix it, I think he thinks it's unfixable and he just wants us to share his pain |
| Mad7Scientist | cheater, can you put in a 50W resistor? |
| Spirit532 | Mad7Scientist, I can't run it in browser, since the jnlp is not served as a jnlp via MIME types |
| Spirit532 | It's served as XML |
| Spirit532 | but if I download it |
| Spirit532 | (save as) |
| Spirit532 | And run that - it sorta works up until a point |
| Mad7Scientist | Well at some time it wast meant to run in a browser, like IE 6 |
| Spirit532 | Where it tries to load one of the two "plugins" |
| jsoft | lol |
| Spirit532 | Those "plugins" seem to not matter much |
| Mad7Scientist | I have java on Windows 98 |
| Spirit532 | There are two versions of the software, one of which controls the camera from the PC and had to be purchased separately |
| Spirit532 | That one I do NOT have and am trying to obtain |
| Spirit532 | (but fruitlessly so far) |
| Mad7Scientist | I save all downloads |
| Spirit532 | And this one, which is the default, and it's loaded directly on the camera |
| Spirit532 | On mine - it was not |
| Mad7Scientist | oldversion.com? |
| Spirit532 | The friendly German chap sent me the update file |
| Spirit532 | The update file FAILED |
| Spirit532 | I had to manually update it by hand, whilst logged in as root |
| Spirit532 | That worked(for once!) |
| Spirit532 | And now I'm stuck here. |
| Mad7Scientist | oh you're doing it in Linux |
| Spirit532 | no, the camera runs linux |
| Spirit532 | I run windows |
| Mad7Scientist | oh |
| Spirit532 | yup |
| Mad7Scientist | Win XP IE6 2004 Java probably what you need |
| Spirit532 | The manual said JRE SE 1.5.0 |
| Spirit532 | I got 1.5.0 |
| Spirit532 | It ded. |
| jsoft | Fucking java. |
| Mad7Scientist | The java download license restricts distribution |
| jsoft | 'Write once run anywhere' my ass. |
| pfred1 | write once crash anywhere |
| Spirit532 | jsoft, I think they meant "write once run anywhere provided it's the same place" |
| jsoft | lol |
| Spirit532 | or "write once run anywhere - just bring your fucking laptop with you, you loser" |
| Mad7Scientist | It is likely your operating system that is triggering the crash. These things were meant to work on XP |
| pfred1 | why just piss some people off? |
| Mad7Scientist | Oracle bought it and ruined it |
| Spirit532 | the offer is still up |
| Spirit532 | get the thing to run, get a reward |
| Spirit532 | probably just a bunch of money via PayPal. |
| Spirit532 | and mad street cred? |
| Spirit532 | you can say you popped root on a $70k military box |
| Spirit532 | but at some point I'm just going to say "fuck it" and reverse-engineer the whole thing into a nice, useable, simple C# or C++ app. |
| ozzzy | come up with a non trivial solution for the Reimann zeta function and there's a cool million for you |
| jsoft | Military shit aye. Over priced, bloated, pain in the ass. |
| Spirit532 | well, this one is somewhat worth the price |
| jsoft | What does it do ? |
| jsoft | Or is that classified |
| Spirit532 | 1536x1024 @ 1000 fps |
| jsoft | Oh right |
| Spirit532 | for 8 seconds I believe |
| Spirit532 | 8GB of RAM, do the math |
| Spirit532 | the main circular connector is so huge and heavy you can build a wooden house using nothing but it and a box of nails |
| Spirit532 | it's a good 1/4 of the camera body's length |
| pfred1 | Spirit532 at least you can use it for something |
| Spirit532 | I have an 11kg high speed camera I can use for that |
| Spirit532 | (that one works and the company gave me full software for free) |
| pfred1 | the Velvet Underground played their first gig at my high school |
| pfred1 | how cool is that? |
| Mad7Scientist | Spirit532, what's the reward? |
| Spirit532 | money |
| Spirit532 | a good sum |
| tgeeky | usually people specify an amount |
| Spirit532 | I don't have an amount |
| Spirit532 | if it's hard, I'll pay more |
| tgeeky | give an order of magnitude at least |
| Mad7Scientist | This could really help us out Chewy, these people seem desperate. |
| Spirit532 | ... okay, maybe in the $50-250 range |
| tgeeky | Mad7Scientist: did you ask that question just to setup a star wars joke? |
| Mad7Scientist | no! |
| Spirit532 | really depends on how much work it is |
| Mad7Scientist | How much when we get to ALderon? |
| Spirit532 | alderaan |
| Mad7Scientist | uh oh |
| Mad7Scientist | It's destroyed who cares |
| Spirit532 | damn that's cold |
| OwenBarfield | That did sound like something Hansolo would say |
| password4 | some people you should not piss off http://thechangepost.com/woman-arrested-training-squirrels-attack-ex-boyfriend/?utm_source=VM&utm_medium=cpc&utm_term=influencer&utm_campaign=VMPub382 |
| Spirit532 | do not stick your dick in crazy |
| password4 | I'm more impressed |
| Mad7Scientist | Do I have to get it to work for you or you send me the software and I get it to work? |
| Spirit532 | Mad7Scientist, if you have a Visario g2 handy.. sure! |
| Mad7Scientist | so I have to supply you with the working software setup |
| Spirit532 | it's on a local network, and I can't(can't!) make it public, I don't want to risk wrecking the only interface I have |
| jsoft | Isn't electronics and computer shit just the bizzo? |
| Spirit532 | the applet talks to 192.168.1.4, so if you can bypass that... |
| Spirit532 | whatever you want, really. |
| Spirit532 | but I believe it starts to communicate with the camera right after it launches, though - if you can get it to tell me "camera not available" or something other than a hard crash, I'll consider that major progress |
| OwenBarfield | Wow, the squirrels gnawed off two fingers and one gonad. She actually trained the squirrels to do it. That's a bizarre story, password4 |
| Spirit532 | password4, and yes, I am tinkering with a speedcam! |
| Spirit532 | to your very late question |
| Spirit532 | a very late reply |
| password4 | :O |
| password4 | is that a traffic cam? |
| password4 | or a high speed cam |
| Spirit532 | high speed |
| password4 | oh cool |
| Spirit532 | the full name is "Weinberger SpeedCam Visario g2 1500" |
| Mad7Scientist | Spirit532, where is the software? |
| Mad7Scientist | OwenBarfield, password4 is the squirrel attack victim a passed out alcoholic? |
| OwenBarfield | ok. too offtopic to respond, sorry |
| Mad7Scientist | The story on that site about the woman from Oak Park (Chicago) who ran over her hair dresser with her car seems like it was machine translated in to English. |
| Spirit532 | Mad7Scientist, on my PC, I have it all |
| Spirit532 | the entire archive |
| Spirit532 | and a backup of the whole filesystem if you want to tinker with it |
| Spirit532 | the jnlp downloads some things from the camera, but you can easily change that to be local |
| Spirit532 | (they're the same files) |
| password4 | playing around with highspeed cams seems so fun |
| Spirit532 | it is very fun, I have 5 now. |
| Spirit532 | ACTION is a bit of an addict |
| password4 | 5?! |
| password4 | how do you afford that many |
| Spirit532 | if you ever visit Belarus, you're free to touch and fondle all of them |
| Spirit532 | eBay! :D |
| Spirit532 | this one was my most expensive score yet and it still hasn't gone close to $1000 |
| Spirit532 | (if you ignore the ridiculous $326 tax our customs shafted me with) |
| password4 | fuck |
| password4 | aplied science had a highspeed panning rig |
| Spirit532 | my cameras are too big to do that economically |
| user3209 | I would have 5 thermal cameras if I didn't practially bankrupt myself to buy one |
| Spirit532 | the only one that's small enough is a tiny 1-inch cube that has a thick USB3 cable |
| cheater | you'd have 5 if you didn't have 1? |
| user3209 | well, if I had money |
| Spirit532 | I'm looking for thermal but my budget is a liiiiiiitle small right now |
| Spirit532 | (see: shafted by customs) |
| user3209 | I got a hacked E4 |
| Spirit532 | ah, the classic |
| user3209 | 320x240 for $800 |
| user3209 | ish |
| Spirit532 | shit turned gold with a few clicks |
| cheater | Spirit532: how fast is that high speed cam? |
| Spirit532 | the USB3 one? |
| user3209 | there's nothing else even close to that pixel/dollar |
| Spirit532 | Boson cores |
| Spirit532 | around $1k for 320x240 @ 60hz |
| user3209 | yeah, but then you have to build the rest of the camera |
| cheater | how is that high speed? |
| Spirit532 | cheater, thermal |
| user3209 | still 1k is a lot less than what I was looking at |
| Spirit532 | two topics at the same time :D |
| user3209 | a few years ago |
| Spirit532 | user3209, you can get a FLIR A65 640x512 @ 30hz on eBay for around $1500-2100 |
| Spirit532 | radiometric |
| Spirit532 | still too much for me |
| user3209 | in the US maybe |
| Spirit532 | well yeah, exports will blow |
| user3209 | I can't export that shit to Australia if it's about 9Hz |
| user3209 | *above |
| Spirit532 | actually, you can |
| Spirit532 | I think Australia is in both Wassenaar and STA |
| cheater | Spirit532: i was asking how fast the high speed cams are that you have |
| user3209 | still, the last thing I need is to spend more on thermal cameras |
| Spirit532 | down by speed: |
| Spirit532 | Weinberger Visario g2 1500(this one) - 1536x1024 @ 1kfps, colour, 8GB(I think, not confirmed yet) |
| cheater | nice |
| Spirit532 | NAC Memrecam fx K5 - 1280x1024 @ 1kfps, mono, 4GB(functions well) |
| cheater | what does 8GB mean? |
| Spirit532 | image RAM |
| cheater | ah ok |
| user3209 | I got 320x240@9Hz which is fine because the human eye can only see 1Hz |
| jsoft | :| |
| Spirit532 | then a Redlake MotionScope M1 - 640x512 @ 1kfps, I think either 1 or 2GB(not sure), colour |
| Spirit532 | (this one is tiny and runs on FireWire, handy) |
| password4 | someone get a highspeed thermal cam! |
| user3209 | maybe 2Hz if you blink really fast |
| Spirit532 | and then the smallest one I have - 26x26x30mm |
| Spirit532 | Ximea MQ022CG-CM |
| Spirit532 | 2048x1088 @ 164fps, colour, USB3(at about 330MB/s to disk) |
| Spirit532 | and you can also not count the thing you can "call" a high speed camera |
| Spirit532 | Redlake MotionScope 1000S... |
| Spirit532 | it's from 1998... and I think does around 320x160 @ 1kfps for 0.6s or thereabouts |
| Spirit532 | It's not functional and scrapped. |
| cheater | Spirit532: are you also into stuff that can capture colour precisely? |
| Spirit532 | spectrophotometers? |
| Spirit532 | might be, depends on how much |
| Spirit532 | need to calibrate my displays so would be handy to have one |
| Mad7Scientist | kmc, is Rust one of those PHP languages that rusts out? |
| jsoft | :| |
| Mad7Scientist | Spirit532, do I download your archive and double click some binary that will open with Java? |
| Spirit532 | yeah |
| cheater | what are you talking about |
| jsoft | Yeah |
| Spirit532 | the app that should control my camera is not working |
| Spirit532 | it's a java jnlp webstart applet |
| cheater | ouch |
| Spirit532 | it crashes at some weird dependency |
| cheater | sorry about that |
| Spirit532 | and I'm offering money to anyone who can unfuck it |
| cheater | regarding spectrometers |
| cheater | i'm mostly interested in something that'll let me measure a real object |
| cheater | and help me figure out how to mix paint pigments to reach a similar spectrum |
| Spirit532 | https://groupgets.com/manufacturers/hamamatsu-photonics/products/c12880ma-micro-spectrometer |
| Spirit532 | this is your best bet |
| Spirit532 | for the simplest AIO solution |
| password4 | i;ve always wanted to build a sort of spetrometer |
| Spirit532 | it ain't cheap, but it's Hamamatsu |
| password4 | but i dont know where to get filters |
| Spirit532 | can't go wrong with them |
| password4 | atleast not for the money I'm prepared to spend |
| Spirit532 | it's not mechanical - hasn't been for yeeeeeeeeeeears |
| cheater | how much does that cost |
| Spirit532 | $395 |
| Spirit532 | it... IS Hamamatsu, after all |
| cheater | oh just noticed the price |
| Spirit532 | it's a complete MEMS spectrometer |
| Spirit532 | AMAZING micromachining |
| Spirit532 | https://i.spirit.re/UevjB.png |
| Spirit532 | look at this |
| Spirit532 | this is chipscale |
| cheater | how is that different from what they were doing 20 years ago |
| cheater | there's still grating |
| cheater | and a cmos array |
| Spirit532 | except in a finger-sized device |
| Spirit532 | and $395 |
| Spirit532 | not $39 995 |
| cheater | those old isa spectrometers are pretty cheap |
| cheater | and the sensor is not much bigger |
| cheater | maybe a matchbox |
| Spirit532 | the mechanics are bigger |
| Spirit532 | grating, optical path |
| cheater | yeah they are |
| Spirit532 | that stuff cost a LOT back then |
| cheater | as i said |
| cheater | about the size of a matchbox |
| password4 | hmmm , finger sized device |
| Spirit532 | must be a filter then |
| cheater | that's still practical i mean it doesn't have to be tiny right? there's nothing wrong about that |
| cheater | nah it's a grate |
| Spirit532 | this source code scared the fuck out of me just now |
| Spirit532 | public static final SENSOR_TYPE SR_GREY = new SENSOR_TYPE(1); |
| cheater | lol |
| jsoft | Spirit532, what source code |
| Spirit532 | my camera has "1" as sensor type specified in the configs |
| Spirit532 | but I can clearly see with my naked eye that it's coloour |
| Spirit532 | so much diffraction |
| jsoft | Is it bullshit 'abstracted' OO crap? |
| Spirit532 | this is so object-oriented you'll be disoriented |
| Spirit532 | ... what a pun |
| jsoft | lol factor 3.4 |
| jsoft | I hate obsessive OO stuff. |
| Spirit532 | the guy who wrote it was a maniac |
| Spirit532 | https://i.spirit.re/lQsOr.png |
| Spirit532 | this is on a 4K display and look at the scrollbar |
| jsoft | Oh what the fuck |
| Spirit532 | that's just the camera helper jar |
| jsoft | Fucking hell |
| jsoft | See thats the shit I hate about what dickheads who subscribe to the 'EVERYTHING MUST BE AN OBJECT' bullshit |
| Spirit532 | OOP sux |
| jsoft | high five |
| Spirit532 | I make classes when I want to make the code simpler and look clean |
| tpw_rules | that's what java forces |
| Spirit532 | not when I want an integer to have its own .dll |
| tpw_rules | java is terrible |
| Spirit532 | java is very terrible |
| Spirit532 | which is why I'm offering people money to make this thing run |
| Spirit532 | and just shoo it away |
| tpw_rules | oh |
| password4 | Spirit532, might be good news |
| jsoft | I think I lost my best mate because he was such a java fiend |
| tpw_rules | how much |
| Spirit532 | depends on how much work, probably in the $50-250 area |
| password4 | i would rather take multiple small objects instead of one gian lump one |
| tpw_rules | oh |
| Spirit532 | are you intrigued by the offer, tpw_rules? :D |
| jsoft | password4, yeah but it gets to the point where if its 'abstracted' too much, its very hard to get an idea of wtf is even going on |
| Spirit532 | jsoft, THIS THIS THIS |
| Spirit532 | I have no fucking clue what the app is doing |
| Spirit532 | it does an init... and then it crashes shortly thereafter, and I managed to track down WHERE |
| tpw_rules | Spirit532: uh no i have too much shit on my plate already |
| Spirit532 | but beyond that crash, if it crashes... |
| Spirit532 | I'm pretty much fucked |
| jsoft | Spirit532, got any error msgs at least? |
| Spirit532 | well yes of course |
| Spirit532 | that's how I found this crash |
| Spirit532 | it dies exactly there |
| Spirit532 | https://i.spirit.re/RIXsr.png |
| tpw_rules | the only good thing about java is that it's trivial to decompile |
| Spirit532 | the DxVideoPlugin is a C++ library |
| Spirit532 | that is also made by those fuckers |
| Spirit532 | beyond that I have no idea. |
| jsoft | What do you mean, crashes |
| Spirit532 | I don't remember the exact error |
| Spirit532 | but it's something to do with a function invokation |
| Spirit532 | invocation? English is hard at 7 AM |
| tpw_rules | invoqation |
| tpw_rules | iirc |
| Spirit532 | it's an error within Java, but every log and trace points to that dll, including java error logs |
| jsoft | It's hard at 16:50 after 6 bourbons :) |
| tpw_rules | what if you just comment it out |
| jsoft | Yeah |
| Spirit532 | you can't comment things out and recompile |
| jsoft | Fuck the plugin |
| jsoft | why not? |
| tpw_rules | why not |
| Spirit532 | java hates that |
| jsoft | :| |
| tpw_rules | it prolly has a nop opcode |
| Spirit532 | not to mention I have to resign everything |
| Spirit532 | yeah nop is just 00 in the jvm |
| Spirit532 | but it doesn't work - it triggers a chain reaction of death |
| tpw_rules | me too thanks |
| tpw_rules | just waste some time with the stack? |
| tpw_rules | push/pop 1 over and over |
| Spirit532 | it's not the nop that kills it |
| Spirit532 | it's something else |
| tpw_rules | oh |
| Spirit532 | down the line, I guess? |
| newcoder | Some android phone have battery fixed with it, we can't replace battery, so when the battery is damaged, what would we do? |
| Spirit532 | you can pad it with nops to the proper length |
| Spirit532 | replace the battery |
| jsoft | newcoder, replace battery |
| tgeeky | joe_z: I found it. The trace that goes from LO to V switch pin 4 is blown off the board. it's literally floating off the board a bit |
| jsoft | tgeeky, how is that a problem? |
| jsoft | :D |
| tgeeky | jsoft: because the LO input doesn't connect to signal ground |
| tgeeky | errrr |
| jsoft | Me, semantics |
| jsoft | meh, even |
| Spirit532 | anyway, I should go to bed now |
| Spirit532 | I'll continue this tomorrow and see if anyone is up to grab some cash |
| Spirit532 | gnight. |
| newcoder | For example Huawei phone |
| alexdovzhanyn | 1 |
| tgeeky | joe_z: that fixed it baby!!! |
| JoeLlama | yay |
| tgeeky | joe_z: and furthermore, the voltage ranges are now exactly back in calibration to where the meter was when it was working before |
| tgeeky | all the way down to the last digit |
| joe_z | tgeeky, that's good |
| tgeeky | joe_z: you have no idea how happy this makes me. thanks so much for your help. |
| joe_z | no problem |
| tgeeky | joe_z: lots of things make sense in this context, too: with the LO jack just disconnected, all measurements were being made through the LO SENSE jack |
| tgeeky | which is why voltage and current measurements were close-ish, but off, and why resistance measurements were even further off |
| tgeeky | joe_z: as for why I didn't notice this blown trace before; it was tucked underneath the switches :( |
| joe_z | yep |
| joe_z | that'll do it |
| tgeeky | i cut the trace off at the grounding point that I soldered a bodge wire to, so there should be no extra noise sitting in there |
| tgeeky | joe_z: I think the thing that really confused me overall was that it worked at all; had it simply not worked I would have started at the inputs and carefully worked back |
| joe_z | tgeeky, that does explain why it read 220K high |
| tgeeky | joe_z: hah, it really was 220k high lol |
| tgeeky | joe_z: and now i have a good meter to go by to fix the 2nd one, and tons of experience. thanks again man. |
| joe_z | yep, no problem |
| JoeLlama | yay joe_z fixed it :) |
| joe_z | nah, we just bounced some ideas around |
| JoeLlama | well that fixed it joe_z (: |
| JoeLlama | sometimes engineering IS bouncing ideas around |
| Drakonite | "sometimes" |
| JoeLlama | I want soba noodles |
| JoeLlama | I yam an ECE and CS |
| JoeLlama | and bouncing ideas is a coolthing |
| JoeLlama | I have no life :)( |
| JoeLlama | :( |
| JoeLlama | moo |
| Drakonite | (I was suggesting that "sometimes" is an understatement) |
| Drakonite | hmm... I'm trying to figure out an easy way to build an automated wire cutter |
| JoeLlama | well fun to invent Drakonite but they do have automated wire/cutter/strippers you can buy |
| JoeLlama | I wish I could afford on |
| Drakonite | I have a bunch of small (~1cm) bits of bent wire to make at some point in the next couple months, and have been pondering how to build a machine to automate the process |
| Drakonite | currently the bit I'm not sure on is cutting the wire after it's bent |
| password2 | cut it before its bent? |
| password2 | how do you want to bend them? |
| Drakonite | password2, that would make it much harder to automatically bend, and would still need the same sort of solution |
| jsoft | Did you hear the news? Flea86 is slacking again. Making excuses for not shipping our boards already :P |
| Drakonite | it's a shape roughly like: _/\_ basically acts as a solderable contact that plugs in to a terminal.I think I can get a stepper to feed proper amounts of wire, then a servo to do the bending |
| password2 | well Drakonite there is nearly infinite ways a wire can be bend |
| password2 | and your solution will depend on that |
| password2 | unless you want to build a cnc wire bender |
| Drakonite | the bending part I have worked out |
| Drakonite | it's the chopping it off bit I'm unsure of |
| Drakonite | I need to test it I suppose, but I think cutting the wire requires more force than I could get with a servo pressing on the handle of a pair of flush cutters |
| Drakonite | with one of the servos I have laying around and easy to access, I should clarify. which are cheap servos. |
| jaggz | lips are too feminine.. apple is too apple/cherry |
| jaggz | oops |
| theBear | that's why i cut mine off, and i never keep the doctor away |
| jaggz | that was supposed to go to my private irc server where I'm discussing logo submissions for a line she's working on |
| jaggz | (oops.. to my wife) |
| theBear | yeah sure, pffft... i see through your ruse |
| tgeeky | jaggz: your secret is safe. <fruit> is too <fruit>/<another fruit> isn't going to get stolen today |
| jaggz | I got your response and it was unhelpful, theBear :) |
| jaggz | ;) |
| theBear | aww, i'll try harder next time :( |
| jaggz | heh |
| theBear | heh, i can't help but imagine that she is doing something involving a little mrs talking apple now |
| theBear | if anyone isn't at work and wants to be shocked and/or offended by a cartoon, lookup aqua teen episode "Bible Fruits" i pretty sure is the one |
| basuotoko | anyone is awake? |
| zap0 | no.. it's 4pm everyone is a sleep |
| Drakonite | what? no, I'm Drakonite |
| password2 | Drakonite: get mini bolt cutters |
| password2 | https://images-na.ssl-images-amazon.com/images/I/41GyaBbkJjL._SL500_AC_SS350_.jpg |
| Drakonite | password2, I'm trying not to spend money :P |
| password2 | ok |
| Drakonite | and actually, I just tested and this wire needs way less force to cut than I thought |
| Drakonite | but for some reason all of these servos are continuous rotation >_< |
| theBear | i got some like that, maybe 6" ish from jaws to back end... useful for a ton of stuff, including but not limited to: pot shaft shortening, laptop hinge disassembling, novelty size padlocks erm, i'm sure the list goes on a tiny bit, but you try just those examples without a pair... not much fun |
| password2 | y pair have cut wre maybe more than 50 000 times |
| theBear | mine certainly done a lot of work, the plastic-dip handles are looking a bit worse for wear, but the rest is like new.... bolt cutters are awesome, specially teeny ones |
| password2 | i use mine to make chainmail |
| theBear | one mans wire-cutter is another mans chain-maker ;-) |
| theBear | or err, sometimes the same mans |
| theBear | i'm out, laters |
| Drakonite | I have a customized pair of what I call "blunt nose dikes" that I used to use for chainmail. |
| Drakonite | (tip broke on pair of dikes, so I ground them down to a blunt nose) |
| password2 | I've always been tempted to afix a tiny mechanical counter on mine |
| kmc | had an argument with a friend -- is it possible to buy say 1000A 600V IGBTs or thyristors? BART uses three phase AC motors and allegedly still uses tube based inverters (custom) |
| kmc | surely even a very expensive off the shelf part would be a better deal? |
| Casper | it may be possible |
| Casper | but sometime the cost to upgrade is an issue |
| Casper | ripping the old system and putting the new one in place will be expensive |
| Casper | www.pwrx.com/pwrx/docs/cm1000dxl-24s.pdf |
| Casper | kmc: read that? |
| jaggz | Casper |
| Casper | hello jaggz ! |
| Casper | how's your neural network going? still hasn't started to want to take over yet? |
| jaggz | they are.. just not mine. |
| kmc | BART does everything different / wrong |
| jaggz | Casper, https://www.youtube.com/watch?v=XOxxPcy5Gr4 |
| electrobot | jaggz just linked to Progressive Growing of GANs for Improved Quality, Stability, and Variation - YouTube |
| kmc | seems like a train under full throttle may draw upwards of 3 kA... but there are multiple inverters involved... also IGBTs can be paralleled |
| kmc | I think all new NYC subway rolling stock uses IGBTs |
| kmc | bart is just now starting to taper their wheels, something most railroads figured out in the 19th century |
| kmc | due to not tapered wheels the system is LOUUUUUDDDDD as FauCK |
| kmc | bart info https://ttu-ir.tdl.org/ttu-ir/handle/2346/48565 |
| password2 | kmc: get teh people that repair your motor to suggest an upgrade |
| password2 | whose bart? |
| kmc | BART is the subway in SF |
| kmc | it's a bit derpy |
| kmc | they built it with cloth seats so that middle class white people would ride the train -- "it has all the glamor of air travel!" |
| kmc | flash forward 40 years, those seats are all soaked through with hobo piss and spilled crack |
| kmc | it's built on a nonstandard rail gauge |
| kmc | it's built with nonstandard rail profiles |
| kmc | AND they keep building extensions which use different incompatible systems and can't thru-run |
| kmc | there's only one connection across the Bay and it's often getting shut down due to train breakdown or "police incident" (read: crackhead attempt to rob someone) |
| kmc | SF is basically a third world country. and you'll pay top dollar to live here |
| eirirs | kmc: sounds like something urban explorers would love |
| kmc | perhaps |
| kmc | part of THX-1138 was filmed in the as yet incomplete transbay tube |
| Sculptor | SF = Sierra Feone? |
| kmc | lol |
| Sculptor | ere these fishing glasses good https://www.amazon.de/Gamakatsu-G-Glasses-7128043-Polbrille-Polarisierungsbrille/dp/B00ORQKKEY |
| Loshki | kmc: it's true. SF has become a third world country, at 1st world prices. |
| kmc | yes. it's the very rich and the very poor -- the middle have been driven out by awful policy over decades |
| kmc | when you have an abandoned decaying gas station, 1 block from a rapid transit stop, in the most expensive housing mkt in the country, and nobody can manage to build housing there over the span of a decade |
| kmc | that's like the definition of market failure |
| kmc | living in the mission was so depressing |
| kmc | between the awful land use, crime and homeless people everywhere, and all the "kill the techies" type rhetoric |
| kmc | fuck all that |
| kmc | anyone who wants to kill this queer techie better pack some armor piercing rounds |
| kmc | come at me you better not miss |
| kmc | people who bitch and moan when a public transit project might remove parking because Latino culture = car culture and therefore removing parking is a racist microaggression |
| kmc | I mean you can't make this shit up |
| password2 | kmc: i think you need to live in a 3rd world country for a few weeks |
| kmc | and these people are taken seriously by the politicians and get veto power over any kind of improvement |
| Drakonite | O_O |
| kmc | password2: I've been to some pretty poor countries and not seen anything as bad as mid-market or 16/Mission |
| Drakonite | that was about the fastest I've ever reacted to anything in my life |
| Drakonite | ACTION just touched the tip of his iron while soldering |
| password2 | kmc sure thing fluffy |
| kmc | they want to "prevent gentrification" by keeping everything shitty and "prevent displacement" by... banning the production of housing? |
| kmc | it's amazing |
| password2 | how else do you clean the tip without touching it? |
| Drakonite | password2, well, it did leave some black soot in my finger |
| password2 | Drakonite: its a technique i almost prefer to the sponge , use my finger to clean the tip |
| password2 | also thats what she said |
| kmc | hehehe |
| Drakonite | I generally prefer not burning myself though |
| Drakonite | it is something I tell people though... if you solder, at some point you're going to touch the iron, and it is not going to be pleasant. I guess I was due for another round |
| kmc | mhm |
| kmc | when I was growing up my parents didn't let me solder for this reason :/ |
| kmc | or at least discouraged it |
| kmc | they were kind of overprotective |
| kmc | 's ok, I was mostly into software and computer parts |
| kmc | ACTION has a tremendous size bruise all over her lower abdomen from falling on a wooden post the other day D: |
| Drakonite | did they have an issue with you cooking? I think the worst burn I've gotten was from cooking |
| kmc | i wasn't interested in cooking |
| kmc | so it didn't come up |
| kmc | but I agree, cooking is more dangerous than soldering |
| kmc | especially if you do any deep frying |
| kmc | we deep fry stuff in the wok pretty often |
| kmc | my wife will put on her lab coat from chem lab |
| Drakonite | even worse than the burn on the back of my hand from when I touched the exhaust of my dad's motorcycle when I was a little kid |
| Drakonite | ah, yeah, oil can be nasty. my bad cooking burn was from the inside of an oven though |
| password2 | i dont think I have ever burned on a solder iron |
| password2 | kmc: my parents were extremely overprotective , and now i dont have the guts to do many things |
| kmc | :( |
| kmc | steam can also be very bad -- in addition to carrying the heat of 100°C, the condensation of steam onto your skin as vapor produces "latent heat" -- like evaporative cooling in reverse |
| kmc | s/as vapor/as liquid/ |
| kmc | I have burned myself on a soldering iron but never an injury I cared about even the next day |
| kmc | have hurt myself much worse doing other supposedly safer things |
| kmc | meanwhile I've taken all kinds of illegal drugs and none of them have done nearly as much damage as alcohol |
| kmc | people are bad at risk assessment |
| stvn | how are they |
| stvn | welcome flea |
| intranick | stvn: who the fuck |
| OwenBarfield | I always keep all my tools clean, especially the sharp ones, because I know that eventually at some point, I'm going to get cut by one of them over time |
| stvn | dogs |
| stvn | definitely the dogs |
| OwenBarfield | that warning about soldering by kmc is a little disturbing, because I"m starting to solder things now |
| stvn | always up to no goo |
| stvn | d |
| intranick | stvn: what kinda dogs |
| stvn | THE FUCKING DOGS MATE |
| intranick | :D FINALLY SOME FUCKING EXCITEMENT |
| OwenBarfield | and I"m going to purchase a soldering iron |
| JoeLlama | moo? |
| Drakonite | OwenBarfield, conversation started because 20min ago I apparently thought it would be a good idea to touch my iron while soldering |
| kmc | sharp knives can be safer than dull ones |
| kmc | a dull knife will still cut you |
| kmc | a sharp knife can be controlled precisely and with the minimum necessary force |
| intranick | sharp knives are almost always safer |
| sloth | guess who got an email from elvis wang |
| OwenBarfield | so, true. People are bad at risk assessment. They think texting and driving is safer than getting a flu shot. Chances of a negative consequence of a flu shot: 1/1 million. Chances of a negative consequence of texting and driving, probably like 1/20 or higher. |
| stvn | well he may have a lot of fake jewellery but you aint never seen no one to act nobody as skilled as me |
| Drakonite | kmc, dull knives are worse than sharp ones. a dull knife doesn't cut as much as it tears, which is more painful :P |
| intranick | lets say you're cutting errrmergerrd kerrerts with a chef knife |
| intranick | if its sharp it will go through with minimal pressure |
| intranick | and you can easily guide it |
| intranick | if its dull you have to give that much more pressure and cant control it as uch |
| OwenBarfield | But when you pierce skin, there's always a danger of infection. Scrapes are less invasive. |
| intranick | much |
| intranick | just about everything we do in life has risk of infection |
| zap0 | like yo' mom |
| intranick | yup |
| OwenBarfield | Most everyday things we do have minimal risks, and there are so many simple things we can do to keep those risks to a minimum. Like just washing your hands when you get back from work, avoiding cigarette smoke or getting inoculated before you travel, or wearing a seatbelt. |
| OwenBarfield | Little effort, big rewards |
| tawr | yes @ sharp knives |
| tawr | but then even that has limits, like my edc, which i keep sharp enough to split atoms |
| tawr | everytime she's bit me, she's hit bone |
| OwenBarfield | So, no, not everything we do has a risk of infection |
| tawr | OwenBarfield: err name one thing that doesn't have that disk? |
| tawr | err risk |
| OwenBarfield | Infection from what? |
| password2 | edc i keep semi blunt |
| tawr | you're the one saying there are things that have 0 risk of infection, i was curious to what that is? |
| OwenBarfield | I said most things we do have minimal risks |
| password2 | OwenBarfield: i would not agree with you |
| password2 | well regarding minimal effort big reward |
| tawr | password2: the stupidest one i did |
| password2 | tawr: ? |
| tawr | i was at a pawnshop checking to see if there was any good cheap junk for a random project, no idea in mind. i find a pool stick, it's real wobbly, i take it apart, and i see the threaded insert is loose in one side |
| tawr | so i pull out my edc and use the spine to try and tighten it so i know if i should buy it or not |
| OwenBarfield | For example, if you wash your hands regularly and properly everyday, it reduces your odds of getting sick or some kind of infection by a large margin. You may spend less than 5 min a day doing this, and you're reducing your risk of illness probably by at least 30 or 40%, which is quite a lot. |
| tawr | and it slips and slices my finger to the bone when i'm in line, guy behind me was watching me and i saw him jump. i didn't say a word and managed to pinch it tight enough i didn't leak everywhere |
| tawr | dude kept looking at me, i refused to acknowledge anything happened |
| tawr | i had just sharpened and stropped to a mirror finish the day before and it hadn't cut anything (but me) heh. |
| stvn | m8 |
| stvn | you're off ya head |
| tawr | i ended up not buying the pool stick. |
| stvn | oh |
| stvn | did you dead |
| tawr | ye |
| password2 | i have this one http://img1.weiku.com/c/018/372/tadpoles_camouflage_small_knife_OEM_quality_pocket_knife_6734_6.jpg , i removed the belt clip years ago |
| tawr | 1095 can hold quite an edge, i had just reprofiled to 25 degrees with a nice belly and stropped til it was a mirror |
| OwenBarfield | I had read somewhere that when people living in western countries started washing their hands regularly, including physicians before and after surgery, it reduced the death rate by a huge amount and also increased life expectency dramatically |
| stvn | i shattered the capacitors |
| password2 | i wonder what angle my cleaver is at , I made it a lot shallower than it was |
| stvn | did you interested in some? |
| password2 | OwenBarfield: that is a double edge sword , kinda |
| password2 | if you suddenly reduce the ammount of 'germs' you are exposed to , then on average you'd be healthier , atleast initially |
| password2 | but too clean can hamper immune system development |
| OwenBarfield | that only applies to young chiildren |
| password2 | bullshit |
| password2 | or cowshit |
| OwenBarfield | when their immune system is still developing, it's good to expose them to a moderate amount of germs |
| password2 | you know how we treated pox? |
| password2 | initially it started by purpousfully incoculating people with cow pox |
| password2 | even adults |
| OwenBarfield | But any human being who is exposed to huge bacterial or viral loads, will get sick |
| Drakonite | that's how we are dealing with chicken pox still, and it's causing lots of issues... |
| password2 | uhm |
| password2 | and everyone exposed to too few could have increased sensitivity |
| password2 | Drakonite: to be honest , it is much more refined now |
| Duckle | but seriously. Wash your danm hands |
| password2 | before or after your rectal exam? |
| Duckle | during |
| OwenBarfield | Yeah. Just wash your hands, especially if you were shaking hands with a lot of people or handling dirty things at work |
| Duckle | or dirtily handling things |
| Duckle | ;) |
| password2 | does your mom count as a dirty thing? |
| Duckle | I can ask |
| Duckle | man, you already overflowed back to 2 |
| Duckle | I guess you're an unsigned nibble |
| password2 | unsigned nipple |
| Duckle | no! bad password, bad |
| Duckle | 4 bits |
| Duckle | I really should stop being silly in here and instead pay attention to the lecture |
| OwenBarfield | After a chickenpox vaccine was introduced to Canada more than a decade ago, hospitalizations fell by up to 84 per cent in some provinces, Dr. Salvadori said. She noted there were 115 deaths in 1995 in the United States attributed to chickenpox, compared to 16 deaths in 2003 after the vaccine was introduced |
| OwenBarfield | I just googled it. |
| OwenBarfield | offtopic, anyway |
| tawr | Duckle: where's the fun in that :) |
| Duckle | tawr: Exactly! :P |
| password2 | lol |
| OwenBarfield | that's weird. They didn't have a chickenpox vaccine in the USA prior to 1995? |
| password2 | electronics is about interfacing with the world , so I think most things are ontopic here ;d |
| OwenBarfield | May be they did. But the new one in 2003 was just more effective |
| Drakonite | password2, ..no, so much is off topic |
| password2 | nah |
| Drakonite | OwenBarfield, no, the common thing to do (which I think is still the most common thing) is to intentionally expose children to it |
| Drakonite | the theory being, as a child you're unlikely to have serious complications, but as an adult it is potentially fatal |
| Drakonite | ...except we've been finding out more and more that doing that can cause various complications when you get older |
| OwenBarfield | some of those people who died of chickenpox were electronic engineers. Too bad they didn't get their chickenpox vaccine. |
| Drakonite | also, the idea that you can only get chickenpox once is a myth; you can get it multiple times, however after you've recovered from it once the chance of contracting it is reduced significantly |
| password2 | ^ :D |
| Duckle | man that chickenpox thing was so exadurated |
| tawr | err |
| password2 | well and even if you get it again , the severity is reduced |
| tawr | maybe you should pay attention in class Duckle |
| password2 | or there is a good chance it is |
| password2 | what class though/ |
| OwenBarfield | yeah. It's so complicated when you get pricked by a needle, and your shoulder hurts. That happened to me when I got my flu vaccine. So complicated and inconvenient. |
| Duckle | back, irc client borked on me |
| tgeeky | Duckle: you missed nearly everyone calling you a fucking idiot |
| Duckle | yay |
| password2 | Duckle: in what class are you? |
| Duckle | electro magnetism. I've had this particular one before |
| Drakonite | on topic: more and more I'm finding myself putting a lot more effort in to making cables and just general polish on how I connect things together |
| tawr | "How To Spell 'Exaggerated' 101", password2 |
| Duckle | the chicken pox is the H1A1 right? |
| tawr | Drakonite: it gets worse. goldplating is a disease, i'm terminal. |
| Duckle | or something like that |
| Drakonite | tawr, he's clearly not had that class yet |
| Drakonite | tawr, :| @ that pun |
| Duckle | "hurr durr spelling" :) |
| password2 | Drakonite: i call lies |
| tawr | Drakonite: which one? the class one or the gold plating one |
| password2 | you are pretending to make cables , I demand you show pictures! :P |
| Drakonite | tawr, the terminal pun |
| tawr | Drakonite: you know it was fucking good |
| tawr | and you're just pissed you didn't think of it. |
| Drakonite | yeah, sure, that pun was golden |
| Duckle | that pun was great |
| Drakonite | password2, :| I just left the workbench and sat down for a food |
| Duckle | but, was that chicken stuff you talked about the H1A1 virus? |
| Duckle | or am I being confused here because it's got an english name really close to the danish name but is something different? |
| Drakonite | no, H1A1 is a type of flu virus |
| Duckle | oh, nvm then |
| Duckle | yeah that was called, directly translated "chicken flu" here |
| OwenBarfield | H1N1 is a flu virus |
| Drakonite | unless I'm mistaken, chicken pox is much more closely related to small pox than it is to the flu |
| Duckle | ooh that's those red dots |
| archivist | nah Herpes |
| Duckle | that kids usually get |
| Duckle | and is horribleif adults get |
| OwenBarfield | The same flu vaccine that protects against seasonal flu also protects against the H1N1 swine flu strain. You can get it as a shot or as a nasal spray. Either way, it "teaches" your immune system to attack the real virus. |
| archivist | it is related to cold sores too |
| Duckle | I just remember back then there was this huge hysteria around H1A1, and the company that made the vaccine said, after being pressured to sell it, that it wasn't ready and they took no responsibility |
| password2 | someone here had mupms , I really hope i dont get it |
| Duckle | and then it was sold. It's probably more than fully developed now though |
| kmc | there have been some tainted vaccines sold. look up polio vaccine and SV40 |
| kmc | doesn't mean vaccines are unsafe overall |
| kmc | like any other product |
| Duckle | oh no not at all |
| Duckle | vaccines all the way |
| Duckle | I preffered the ones in sugarcubes as a kid though :P |
| Drakonite | OwenBarfield, uh, not quite. H1N1 notation is just a way of naming the different flu viruses, based on their characteristics. Flu vaccines do not inoculate against all strains; only the strain that is predicted to be an issue that year |
| OwenBarfield | Last year's H1N1 vaccine was extremely effective. We probably had a really mild flu season last year in Canada partly due to how effective the flu vaccine was that year |
| kmc | some people think though that the SV40 contamination in early polio vaccines is responsible for an increase in soft tissue cancers over the past few decades |
| kmc | it's probably impossible to know with high confidence whether that's true |
| Drakonite | kmc, I'd be more likely to blame the tons of lead that were pumped in to the atmosphere during the same people's life times |
| Caelum | is there anywhere I can buy like, a box that will put a resistor on each channel of an rca or mini input, preferrably adjustable |
| Drakonite | Caelum, you mean on an audio or video signal? It's called a pad. |
| OwenBarfield | Polio vaccines are used internationally across the world, are very safe and very effective. In fact, polio was almost completely wiped off the face of the Earth circa 2007 thanks to Rotary International and the WHO |
| kmc | Caelum: you can probably find a resistor decade box with a proper input/output |
| Caelum | Drakonite, kmc: yeah audio, thanks! |
| OwenBarfield | Millions of children and adults were safely inoculated, especially in many developing nations in Africa |
| OwenBarfield | and Asia |
| Duckle | OwenBarfield: Wait polio is still a thing? |
| Drakonite | uh, yeah. polio vaccine was a good thing. Not sure what that has to do with anything :P |
| Duckle | I thought polio was wiped |
| Drakonite | Duckle, in places where people are refusing vaccinations |
| Caelum | Duckle: it's a huge problem in Pakistan, the fundie muslims declared jihad against the polio vaccine workers, and polio is on the rise |
| Duckle | anti vax is such an infuriating trend |
| OwenBarfield | But thanks to some political problems and warring factions in some African countries, polio was not completely eradicated in those nations |
| Voop | im anti vax but not because im retarded |
| Voop | i just have a phobia of needles |
| Duckle | that's different |
| Drakonite | thanks to dipship anti-vaxxers polio is not eradicated in the US either |
| OwenBarfield | yeah, those stupid and ignorant anti-vaxers use fake news and Facebook to spread their ignorance and threaten people's health |
| Duckle | still dumb, but that's phobias for you |
| Duckle | I mean, the definition of a phobia is "unreasonable fear" so yea |
| Duckle | bummer man |
| Voop | ive never been vaccinated for anything |
| kmc | the CIA also used the pretext of a vaccine campaign to try to find bin laden via genetic testing |
| kmc | and of course, there are many instances of fatal unethical human experimentation under the guise of vaccination |
| jan64 | there were like 37 reported polio cases worldwide in 2016. |
| jan64 | It's pretty close to getting wiped out. |
| kmc | so yeah I think muslims might be a little skeptical of white ppl showing up with vaccines "we're here to save you!" |
| kmc | even if they really are, most fo the time |
| kmc | not disagreeing that vast majority of anti-vax people in the USA are dipshits |
| OwenBarfield | you probably get more mercury from eating a can of Tuna fish than you would if you got 100 flu vaccines in less than a year |
| Duckle | hehe |
| kmc | but the anti-anti-vax people are also a smug echo chamber |
| password2 | ACTION gives Drakonite a lead ennima |
| Duckle | kmc: How come? |
| kmc | many of them would completely flip their shit if you even mentoined any past instance of vaccines causing harm |
| password2 | yeah , i give fuckall about my spelling today |
| NGC3982 | wait a minute |
| kmc | even though some of these are well documented |
| Duckle | I don't think anyones arguing about people allergic to vaccines not getting them |
| NGC3982 | this anti-vax thing sounds like some meta thing |
| kmc | it's actually.... a kind of complicated issue?? |
| Voop | or they want you arrested for not getting vaccinated |
| kmc | amazing. |
| Duckle | or people with phobias like Voop |
| Drakonite | flu shots are the one that doesn't make sense for everyone to get; depending on your health and age brackets the flu shots can be more likely to cause problems than protect you |
| NGC3982 | something tells me that the anti-vax community is super small, and the anti-anti-vaxer community is the giant echo chamber.. |
| kmc | nah |
| kmc | there's enough anti-vax to cause measurable upticks in preventable diseases :( |
| Duckle | something tells me either end of the spectrum is a loud minority |
| Voop | they are both vocal minorites |
| kmc | I think that vaccine manufacturing technology is much better now and something like SV40 is very unlikely to get into the stream of medications, and even if so, it beats having polio |
| Voop | most people dont give a shit |
| OwenBarfield | elderly people and vulnerable children, or people with compromised immune systems benefit the most from flu shots |
| Duckle | yea |
| kmc | the anti-anti-vax seem like Reddit atheists to me (and probably overlap heavily) |
| OwenBarfield | and when healthy people get flu shots, they also are helping people who are vulnerable, obviously, because there are less sick people who will be encountering those vulnerable people |
| Voop | the logic of anti vaxers is pretty entertaining though |
| kmc | people who go out of their way to make fun of anti-vax people without even knowing about some of the relevant history here |
| NGC3982 | kmc: yes, that is a fact. what isnt a fact is if that rise became because the anti-vaxing community grew by itself, or if it grew because the anti-anti movement started ranting (again). that kind of meta shit is not unusual today (i.e. trump). |
| kmc | smug internet douches basically |
| Duckle | OwenBarfield: Yep, herd immunity |
| Drakonite | for my age/health, the chance of complications from the flu shot is higher than the chance of complications from actually catching the flu |
| n2 | Which is why you have to rely on others |
| Duckle | eey nitrogen is back |
| n2 | And, that's why anti-vaxers kill themselves and others |
| Voop | herd immunity and all that |
| kmc | I think the vaccines == autism thing is just based on temporal coincidence i.e., kids with autism tend to show it around the same time they get scheduled vaccines |
| zap0 | ECHO *echo* echo... opinions.. echo opinions eeeecchhhhooooo.... this internet echo chamber is awesome |
| kmc | there's also a lack of empathy on the anti-anti-vax crowd for the desperation some of these parents must feel |
| Duckle | n2: Do you have a feeling for how big the antivax stuff is here? I feel like it's tiny in Denmark |
| kmc | anyway yes |
| kmc | echo chambers gonna echo |
| Drakonite | with the flu, the best thing society could do is for people to wear masks and stay home when sick |
| kmc | I'm sure we have our own echo chamber here on some issues |
| n2 | Duckle, it's increasingly big. |
| tawr | rofl zap0 you just outted yourself eh |
| OwenBarfield | Drakonite. If you don't have egg allergies, your chance of getting a complication from a flu shot is less than 1/milllion |
| Duckle | oh plz no :( |
| NGC3982 | im swedish, and i have never met an antivaxer. |
| n2 | Big enough to begin to be a problem |
| Duckle | n2: I figured you'd be exposed to it more, being a bit older |
| OwenBarfield | less than 1 in one million |
| n2 | Haha |
| NGC3982 | i have met people who are sceptical, but they have also been literal scientists. |
| n2 | Well |
| Voop | tawr, i just burned the piss out of myself |
| n2 | It's still something you're not proud of |
| n2 | But the vaccine rates are dropping steadily |
| tawr | Voop: fuck dude, how bad? go run slightly warm water over the area |
| Voop | splashing water on freshly poured aluminum is a bad idea |
| Duckle | n2: I mean, the only people in my family with kids currently is my oldest older brother, and my cousin |
| n2 | Within a decade or so, herd immunity will be gone |
| tawr | ACTION smacks Voop |
| OwenBarfield | your chance of getting the flu during flu season is about 1/8 |
| tawr | go run water on it |
| Duckle | and well, my cousins a nurse, so she's not antivax :) |
| tawr | for a few minutes |
| Voop | just when the last burn heals i get new ones |
| Duckle | n2: oh man that makes me sad |
| Voop | n2 why |
| Drakonite | OwenBarfield, minor complications (e.g. getting the flu from it) is higher than that. I'm not allergic to eggs but I do have a higher than normal chance of having issues with the flu shot. |
| Duckle | I thought we had it pretty much as part of our tradition here to go with your kids to get them vaccinated |
| n2 | Voop, when the vaccine rates drop low enough |
| OwenBarfield | Your chance of dying or getting seriously ill from contracting the flu is probably about 100,000 times higher than getting a negative consequence from a flu vaccine |
| n2 | Then diseases begin to become endemic again |
| Drakonite | tawr, YES THANK YOU. It is slightly warm water. Why does every idiot out there erroneously say cold water? :( |
| Voop | lol i thought cold water was best |
| Duckle | n2: Are you assuming the current decreasin rate of vaccinations will continue? |
| n2 | Duckle, yes. |
| kmc | five minutes of listening to Trump talk will cause more brain damage than a lifetime of mercury and lead |
| Drakonite | Voop, no. luke warm or slightly above. Cold water can put the flesh in shock, and will increase chance of scaring. |
| Duckle | hopefully it won't. I mean, it'll reach a point where it's big enough of a problem to have campains run, and then it'll hopefully stop |
| n2 | Also, Duckle |
| n2 | Just a little fun fact |
| password2 | oh fuck |
| n2 | The HPV vaccine right? |
| OwenBarfield | I don't think the math gets any simpler than that. Flu complications are significant risks. Flu vaccines present no significant risks. |
| n2 | A biiiig thing, all those poor girls being ill? |
| password2 | first washing hand , then vaccines , now trump |
| n2 | An identical vaccine has been used in our neighbouring countries |
| n2 | No problems, at all. |
| n2 | It's classic conversion disorder. |
| n2 | People get whipped into a panic by the media. |
| tgeeky | OwenBarfield: flu vaccines are like the 2nd level of vaccinations; whereupon we vaccinate against things that make us feel bad and smash our productivity for a short while |
| tgeeky | as opposed to the big boy vaccines which prevent illnesses which ravage and murder tons of people |
| n2 | tgeeky, Influenza has a quite high mortality rate. |
| n2 | Maybe not for you, but for other people. |
| password2 | i think this generation has a fundamental issue with debating |
| tgeeky | n2: i was already thinking of that objection |
| OwenBarfield | YEah, how many people die in the USA from flu complications each year? |
| password2 | not only debating , but thinking holistically about things |
| tgeeky | n2: I suspect the number of people who are prevented from dying of the flu versus the number of people who take it ratio is like 10000/1 |
| tgeeky | but that's fine |
| n2 | OwenBarfield, between 3000 and 50000 |
| tgeeky | i'm a master bater |
| n2 | Depends on the flu variant of the year |
| tgeeky | master debater |
| tgeeky | some kind of bater |
| OwenBarfield | CDC estimated that from the 1976-1977 season to the 2006-2007 flu season, flu-associated deaths ranged from a low of about 3,000 to a high of about 49,000 people. |
| n2 | tgeeky, In a bad year, that ratio is wrong. |
| tgeeky | n2: that's fine. it's still not like polio |
| n2 | Nope. Polio came in waves, not every year. |
| n2 | The cumulative number of influenza deaths is probably higher. |
| n2 | Over a given decade, say. |
| n2 | :-P |
| tgeeky | n2: well bad example then. measles? mumps? |
| tgeeky | which one is worst |
| tgeeky | flu I think is probably the 20th century's worst disease |
| n2 | Flu can be really, really bad. |
| password2 | in a good year its wrong too! |
| n2 | Every now and again, a flu virus will occur that, well... |
| Duckle | back |
| n2 | Kills young, healthy people. |
| n2 | Because it causes an immune overreaction. |
| Duckle | n2: HPV vaccine? |
| password2 | mumps go bumps |
| Duckle | I haven't followed the loca news much the last 2 years |
| n2 | The spanish flu is a good example of that. |
| tgeeky | i'm going to guess and say that the spanish flu of 1917-1918 killed like 50% of the people who died in WWI |
| password2 | guys , i seriously hope i dont get mupms now |
| n2 | tgeeky, easily |
| n2 | That's what the fear around H5N1 is. |
| password2 | mumps even |
| n2 | That it is different enough to regular flu viruses to, well, cause an immune panic |
| password2 | someone in our office had it |
| n2 | In people with an intact immune syste |
| n2 | m |
| n2 | i.e. the young and healthy |
| tgeeky | that's one of the most bizzare things about the flu, is that the strain decides the lethality to the target, not just the target's health in general |
| tgeeky | those soldiers were probably otherwise very healthy people |
| n2 | Well, the strain has an effect. |
| n2 | Because some strains just cause the immune system to overreact. |
| n2 | It's not exactly known why |
| n2 | https://en.wikipedia.org/wiki/Cytokine_storm |
| tawr | i believe they know why now n2 |
| kmc | don't get mumps https://en.wikipedia.org/wiki/MUMPS |
| tawr | iirc there was a whiteaper on phys |
| tgeeky | that sounds like a superpower that a turn based RPG player would have |
| tgeeky | i cast, cytokine storm! |
| tawr | *whitepaper on elucidating the nature |
| n2 | tawr, we know what effect it causes |
| n2 | It is not certain /why/ the effect is caused |
| tawr | no, the cause not the effect, n2 |
| n2 | Is it because of some superagonist effect of certain antigens in certain strains? |
| n2 | Or is it because of some weird positive feedback loop? |
| tawr | i believe the latter and it's based on a specific antigen and enzyme it releases |
| tawr | sec lemme find it |
| Duckle | man you guys are educated on the subject |
| Duckle | I just do what my doc tells me :o |
| n2 | ACTION *did* go to medical school |
| n2 | Didn't complete |
| n2 | But, yes |
| n2 | :P |
| Duckle | oh. right, I forgot that :P |
| tawr | not me |
| tawr | i just have been cursed with a memory that haunts me |
| n2 | Me, too, really |
| OwenBarfield | I just get my flu shot every fall, and I can't even remember the last time I had the flu. Probably like 13 years ago, before I started getting flu vaccines. But I also have a pretty healthy lifestyle and wash my hands a lot, and your flu vaccine is usually anywhere from 30 to 70% effective in buiding your antibodies for the right strains, depending on the year. |
| Voop | is there a such thing as too much borax tawr |
| tawr | so i try and fill it up with random technical information about every subject to try and minimize the total % of bad memories i have |
| Duckle | tawr: You mean you have good memory, or you have a particular bad one? |
| n2 | Oh. |
| Caelum | Drakonite, kmc: I used this thingie that I had, and it works perfectly, even with the tube stage of my amp! https://smile.amazon.com/gp/product/B01MD26W0H/ref=oh_aui_search_detailpage?ie=UTF8&psc=1 |
| tawr | an excellent one, Duckle |
| n2 | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4711683/ |
| electrobot | Caelum just linked to www.amazon.com (Robot Check) |
| n2 | Is about the best |
| DocScrutinizer05 | ooh thanks for reminding me to get my flu vaccination |
| n2 | Me, too. |
| n2 | I had a "common disease" a few months ago |
| n2 | God damn it, I was ill |
| Duckle | tawr: Gotcha, it was just a bit ambigious :P Like, you could've been cursed with a memory of someone who got badly sick, or you're cursed with a good memory so you remember everything :P |
| Duckle | and I need to kick the ":P" habbit |
| tawr | i mean, it's not really photographic, but it holds a lot |
| Duckle | neat |
| Duckle | I have good long term memory |
| tawr | like, when i walk into a store, i remember exactly where everything is on every shelf i walk by |
| Duckle | but short term, nooope |
| n2 | tawr, the best treatment may be... |
| tawr | i know the exact spot for everything in home depot, for instance |
| n2 | Selective COX-2 inhibitors. |
| n2 | I.e. |
| Duckle | Ethanol |
| tawr | i should work there as a stocker |
| n2 | Fancy-ibuprofen |
| tawr | heh |
| OwenBarfield | yeah, flu season already started, people, so get your flu shots now, and let's make this a safe flu season, like last year |
| Duckle | n2: Did you have the "cold + sore throat + headache + fever" That went around recently? |
| n2 | Duckle, nope. |
| n2 | But |
| Duckle | had that a few weeks ago |
| n2 | I had an episode of, well... stomach problems. |
| Duckle | oof |
| n2 | Holy fucking shit, that was horrible |
| n2 | Didn't vomit, but |
| n2 | EVERYTHING hurt |
| n2 | I slept like 20 hours straight |
| Duckle | niiice |
| n2 | And was tired for a week |
| Duckle | the sleeping part |
| OwenBarfield | Also, note, it takes 2 weeks to reach peak immunity after your flu shot, so take it easy after your shot |
| Duckle | the rest was probably horrible |
| Drakonite | Caelum, they are basically just resistors (or potentiometers in the case of adjustable ones), even though they sell some high priced ones for audio gear (those are mostly designed to handle higher wattage) |
| Duckle | OwenBarfield: As noted earlier up, isn't flushots mainly for people at risk? |
| n2 | Duckle, well, by getting one yourself |
| Caelum | this knob is nice too, it's big and has a lot of range, most of these are really crap |
| n2 | You help people with poor immune systems |
| Duckle | like, I'm 22 overweight but otherwise decent health. why should I get it? |
| n2 | Who can't get the shot |
| Duckle | n2: heh |
| n2 | That's the point of vaccination |
| n2 | Not your advantage |
| Duckle | who can't get shot |
| OwenBarfield | Flu shots are for everyone, especially those at risk of flu complications |
| n2 | But the advantage of the entire population |
| Duckle | hmm |
| n2 | Unfortunately, we are too egotist for that today |
| n2 | *sigh* |
| Caelum | Drakonite: I can finally use my headphones with this nice schiit amp and RCA tube, this is like amazing :D |
| Duckle | I thought you were talking about those earlier, as only applying to people who needed it |
| Faux | I don't get the shot because you feel like crap for ~3 days, and I'd rather gamble. |
| Drakonite | Duckle, ask your doctor if you should get it. Depending on your age and various health criteria, they may tell you not to |
| n2 | Faux, generally you don't |
| n2 | Your arm may hurt a bit |
| n2 | Duckle, some people have issues that cause them to not be able to get vaccinated |
| Drakonite | I've been told flat out by a doctor that I'm better off not getting it, at this stage of my life |
| n2 | They are also the most vulnerable w/r to complications |
| Drakonite | also, they do NOT plan for everyone to get it, there is a limited supply of flu vaccine |
| Duckle | if it's anything like the tetanus shot then, atleast in my experience, it doesn't hurt other than in the arm for a day |
| n2 | Drakonite, it can be re-ordered though |
| n2 | The global supply is huge |
| n2 | And it does not take much more than 2 weeks to grow a new batch |
| n2 | Chicken eggs and viruses |
| n2 | That's all it takes |
| n2 | :P |
| Duckle | isn't flushots a new thing? |
| Duckle | like, through my childhood there were a few years of age where you went to get a shot |
| Duckle | some sugar cube vaccines when I was smaller, then a shot at 7 and some other ages I forgot |
| Drakonite | n2, unless things have changed in the last 5-8 years, no, they can't just re-order more. They are incapable of producing enough for the entire population. It's just not possible. |
| Drakonite | Duckle, flu shots have been around a long time, but they talk about them more now |
| Duckle | gotcha |
| n2 | Drakonite, do you remember the swine flu? |
| n2 | Millions of doses was produced very, very quickly. |
| n2 | It is certainly possible |
| Voop | they said there would be a black president when pigs fly |
| Voop | obama was elected then a few months later swine flu |
| Drakonite | n2, Yes, I remember quite clearly being told not to get a vaccine if you weren't at risk, because there wasn't enough to go around. Priority was given to children and the elderly. |
| n2 | Drakonite, your country may have a poor deal |
| OwenBarfield | In my province, about 90% of elderly people are encouraged to get flu shots, to protect them from illnesses that their weakened immune systems can't handle. The nurses who administer the flu shots will also ask you questions before the flu shot. But unless you have some serious active life-threating disease, like full-blown AIDS, or a severe egg allergy, or a history of anaphylaxis, it's... |
| OwenBarfield | ...not likely they will refuse to administer the shot. |
| Duckle | https://i.imgur.com/VXFHbVY.png Danish child vaccination program. It's in danish though so i don't know how interesting it is |
| Duckle | Full pdf here: https://www.ssi.dk/pdf.ashx?title=Det-danske-b%c3%b8rnevaccinationsprogram&url=http%3a%2f%2fwww.ssi.dk%2fVaccination%2fBoernevaccination.aspx%3fpdf%3d1 |
| Drakonite | password2, if you really wanted to see: https://i.imgur.com/70uAosB.jpg :P |
| Duckle | that's the extent of vaccinations I've got experience with, and then an extra tetanus shot a few years back when I got a bad cut at work |
| Drakonite | (also, if you've ever dealt with steppers, you know that's not how the wires from the stepper normally look...) |
| OwenBarfield | All this stuff about vaccinations should be in the #biology channel. Sorry. |
| Duckle | Drakonite: I mean, they're just twisted, you didn't even braid them ;) |
| Duckle | OwenBarfield: True |
| Duckle | better than a dead channel though |
| Drakonite | Duckle, twisting is better than braiding, though I didn't think to counter-twist until it was too late though |
| Duckle | Drakonite: Fair. I just like braiding :) |
| Duckle | it's relaxing |
| OwenBarfield | Bon soir |
| Drakonite | the IDC stuff is all keyed too, don't think that can be seen. Even the stock cables that aren't actually IDC connectors I've started using hot glue and a knife to add keys to |
| Duckle | heh |
| Duckle | Drakonite: I mean, rotateable connectors on steppers are nice |
| Duckle | it allows you to easilly reverse ther rotation if pinned right |
| Drakonite | I had another for that LA that had IC probes on it, but the wire was such crap I got fed up and ripped it apart |
| Duckle | nice logic analyzer btw ;) |
| Duckle | I have one like it, had some issues with crosstalk though |
| Duckle | like, unconnected channels would show some of the adjecent channels signals |
| Drakonite | I explicitly wanted a keyed connector for it so once I get it set I can't plug it in backwards. If it's backwards now, I can either tweak that in software, or easy to swap around the pins in that connector |
| archivist | connect unused to gnd |
| Duckle | archivist: ooh. That makes sense |
| Duckle | archivist: I don't use it anymore though, since I got my Analog Discovery 2 |
| Drakonite | I want to review that LA. Just arrived a few days ago and haven't had time to use it yet though |
| Duckle | Drakonite: It's nice. Especially for the price |
| Drakonite | seems to essentially be the same a the early saleae devices |
| Duckle | And I honestly feel a bit bad for saelea logic |
| Duckle | Drakonite: Well yeah, it's a copy |
| Duckle | the value of the saelea LA is in the freely provided software, so china made a copy of the hardware :S |
| Drakonite | I bought a saleae in their early days, ended up giving it to a friend though |
| Duckle | what do you use instead? |
| Drakonite | so I wouldn't feel horrible about using their software, but I intend to use sigrok with this instead |
| Duckle | oscope with LA in it? |
| Duckle | ahh, gotcha |
| Drakonite | I have an open source LA that I would have been using instead, but just didn't have much need for it |
| Duckle | gotcha |
| Drakonite | (because of life issues, my electronics gear was put in boxes for several years) |
| Drakonite | http://dangerousprototypes.com/docs/Open_Bench_Logic_Sniffer |
| Drakonite | this thinger |
| Drakonite | which has been discontinued, and unfortunately there are issues getting working firmware/drivers for it now |
| Duckle | right, I see it mentions SUMP |
| Duckle | which I thought was pretty old |
| Drakonite | yep |
| Duckle | wait, firmware? |
| Duckle | do you mean software? |
| Drakonite | I mean firmware |
| Drakonite | but yes, also the software |
| Duckle | isn't that provided right there on the DP site? |
| password2 | oh , duh |
| Duckle | the V3 core |
| Drakonite | there was effort to make a new SUMP program, but it fizzled out |
| password2 | ofc i can make an LA with an fpga too |
| password2 | should be simple? |
| Drakonite | Duckle, a lot of the links on that site are dead |
| Duckle | oh |
| Drakonite | looks like sigrok supports it though, so need to give that a go |
| Duckle | neat |
| Duckle | Drakonite: DId they ever provide the Verilog for the V3 core? |
| Duckle | did* |
| Drakonite | the source was available at one point I think |
| Drakonite | the last I looked in to it most links related to it were broken though |
| Duckle | another reason to just use github :/ |
| Drakonite | I could be wrong, they may not have released the source, but I thought I saw it listed somewhere |
| Drakonite | oh, yeah, here it is https://github.com/GadgetFactory/OpenBench-Logic-Sniffer |
| Duckle | Drakonite: I don't see any VHDL in there |
| Drakonite | then, no |
| Duckle | hmm, interesting |
| Duckle | password2: But yeah, FPGAs are a popular choice for LA |
| password2 | Duckle: I'm the other way around |
| password2 | LA for FPGA not FPGA for LA :D |
| password2 | ie i have an FPGA and want to program it |
| password2 | or I will have one |
| Duckle | wah? |
| Duckle | you want to turn a logic analyzer into an FPGA? |
| Duckle | I said that FPGAs are a common thing to use, to make an LA |
| password2 | urg |
| password2 | i mean i have an fpga and thinking of stuff to do with it |
| Duckle | gotcha |
| Duckle | yeah LA is a good choice |
| password2 | not i want an LA and thinking about what to use to build one |
| Duckle | aah gotcha |
| Duckle | password2: You can also use an FPGA for an insane WD2812 driver ;) |
| Duckle | I uhm |
| password2 | i could |
| Duckle | yeah WD2812 is correct |
| Duckle | I think they are newer or something |
| password2 | ws2812b ? |
| Duckle | yis |
| Duckle | well WD2812 is also a chip :P |
| password2 | i have about 195 on breakout boards |
| Duckle | oh nvm, it is ws |
| Duckle | man I'm doing weird shit |
| password2 | oh wait i think i have 395 |
| Duckle | password2: Make a 240Hz gaming jumbotron! |
| Drakonite | password2, those little round pcb breakouts? |
| password2 | their for this https://hackaday.io/project/6365/gallery#aea849cb99f57d0ab4f1a1733536199c |
| password2 | uhm https://hackaday.io/project/6365-mega-7-segment-clock |
| Drakonite | heh, I considered building something like that |
| password2 | i dumpster dove an diffuser the other day , want to run a few experiemnts on how it will perform |
| password2 | I've since decided to use 6 digits instead |
| Drakonite | I need to build a clock soon |
| password2 | standard clock? |
| Drakonite | My clock fell and broke a few years ago, it was a custom thing my dad had built. I decided I wouldn't buy a new clock until I designed and built my own custom clock |
| Drakonite | Took me a while to come up with and pick an idea, and then keeps getting put off |
| Duckle | flip-dot display! |
| Duckle | It's a shame they are so insanely expensive |
| Drakonite | indeed, they look fun to play with |
| NGC3982 | ACTION has spent the last 12 years trying to build the harrison h1. |
| Drakonite | the less ambitious clock design I am going to build (and thus, most likely to actually get done) is just a normal clock movement, but using vinyl cutter and paint to make the clock face look like a circuit board |
| Duckle | make a fluid clock |
| Duckle | 7segmet style of pockets for liquid, then pump colored oil / clear water into the segmments |
| Duckle | could be really neat |
| Drakonite | eh, going to make my less ambitious one first, as I don't have a clock in my living room :P |
| Drakonite | then a couple other ideas after that, that may or may not happen |
| password2 | oh man , an shishi odoshi powered clock could be epic |
| Peyam | hi. Does anyone have any good toturials on how I handle or work with analogue inputs? |
| ^7heo | ttoturials suck |
| Peyam | what should I read then? |
| ^7heo | tutorials are bad already |
| ^7heo | but ttoturials suck |
| ^7heo | read a book |
| Peyam | what should I read? then ^7heo |
| ^7heo | a good one |
| Peyam | recommand one |
| DocScrutinizer05 | /topic |
| password2 | well |
| Drakonite | here is the other clock idea I wanted to build: https://i.imgur.com/84A7J0G.jpg a white diffused clock face that looked blank, but RGB LEDs would light through it to show the time. (middle black ring was ditched). also IoT to allow setting time, and ideally some way of showing info in the center of it (weather alerts, etc) |
| password2 | read as much as you can |
| Drakonite | Peyam, that is a very wide question, FWIW. there is a LOT of stuff related to analogue |
| Peyam | Well I have a PLC and I need to learn how to workd with analogue output and input. like make a diode light more |
| ^7heo | < password2> read as much as you can |
| Drakonite | controlling LED brightness is a question of current control, which is a significantly different problem than, say, reading the value of a POT |
| ^7heo | if you get good litterature yes |
| DocScrutinizer05 | otr building a decent audio amp |
| ^7heo | but your round of the mill bs tutorial will do more harm than good |
| password2 | I dissagree |
| DocScrutinizer05 | read until you start noticing the diffs in quality of what you read |
| DocScrutinizer05 | s/quality/expertise/ |
| Peyam | you never get an answer here |
| Peyam | I wonder why there is a channel at all |
| DocScrutinizer05 | Peyam: until you reach that level, maybe asking about details in here is a viable approach |
| Peyam | Why should it be a level dependend channel? |
| DocScrutinizer05 | you are mistaken on what I said |
| DocScrutinizer05 | sorry I don't know any tutorial specific about analog IO |
| DocScrutinizer05 | what you're asking for is too generic on a too specific topic |
| DocScrutinizer05 | like "is there a report about taste of green apples with a weight between 200 and 300g?" |
| flor1an | want one? |
| flor1an | they taste like apples do. |
| flor1an | EOF |
| flor1an | *scnr* ;) |
| tawr | Peyam: topic. |
| tawr | Drakonite: acrylic |
| tawr | 150 grit vertical in front, horizontal on back, 1/16". sheet of glass twice as thick between the leds and the acrylic, but an airgap would work too |
| tawr | err 1/16" acrylic |
| Drakonite | tawr, ? |
| Drakonite | oh, you mean on building the thing I linked my mockup of |
| tawr | https://i.imgur.com/UethJIH.jpg |
| tawr | ws2812b + attiny85 + pot + fastled lib |
| tawr | 38 leds |
| DocScrutinizer05 | Peyam: there might be whitepapers about ADC/DAC for example |
| Drakonite | yeah, plan was to use a piece of milky acrylic, but couldn't find any, so had an acrylic disc that I tried diffusion spray paint on. Unfortunately it yellowed heavily |
| tawr | nope |
| tawr | 150 grit |
| tawr | sand one side vertical, and the backside horizontal |
| Drakonite | first attempt was sanding t |
| DocScrutinizer05 | Peyam: and tutorials about analog circuitry in general |
| Drakonite | *it |
| Drakonite | I was not happy with the result |
| tawr | 150 grit is still smooth to the touch |
| tawr | what did you sand it with, ad how well did you sand it? |
| Drakonite | it did not come out well IMO |
| tawr | see mine? |
| Drakonite | it some where in the 120-200 range. I forget which. I spent a fair bit of elbow grease on it |
| Drakonite | Now I have another acrylic disc and some diffusion material to put behind it |
| Drakonite | I've tested in other circumstance and it looks pretty good |
| Drakonite | I've planned this project out, I just haven't done all the work to build it |
| DocScrutinizer05 | tawr: that photo you linked would benefit from disabling the flashlight, a lot |
| tawr | DocScrutinizer05: it was done in that way on purpose |
| tawr | to show the surface finish of the diffuser plate |
| DocScrutinizer05 | aah, ok |
| tawr | don't dare to question me, i am the great and powerful tawr |
| Drakonite | :P |
| tawr | Drakonite: yeah. i've actually wondered about woven batting as a diffusion material |
| tawr | like what's used in blankets and bedding |
| tawr | because i have a roll of it, too |
| Drakonite | I picked up some plastic sheet intended as diffusion material. might be slightly thicker than I'd like, but the ws2812 is plenty bright enough through it |
| Drakonite | I didn't use the same sanding pattern as you. Not sure how much difference that would make. I just wasn't happy with the level of diffusion on it for what I was trying to do, and I had the diffusion spray stuff |
| Drakonite | er, frost spray, or whatever it's called |
| password2 | tawr: thats very dim |
| Drakonite | the spray would have worked well enough perhaps, except it yellowed for some reason |
| tawr | password2: it's off.. |
| tawr | lol |
| password2 | mhh |
| password2 | still see dots :D |
| Drakonite | it's still dim :P |
| password2 | ooh |
| Drakonite | off is pretty dim afterall! |
| tawr | it was literally off, and i used the flash |
| tawr | you ignorant slut |
| password2 | i want tetris shaped blocks |
| JoeLlama | I'm bored |
| Sculptor | moooo |
| JoeLlama | moo Sculptor tell me what you are doing? :) |
| Drakonite | tawr, at this point the thing that is holding it back is the design of the inner physical structure, and physically building all of it |
| Sculptor | i took a day off. i'm about to go to my folks' to pick up a packet i got yday. then i'm gonna buy something to eat |
| password2 | tetris shaped lights |
| password2 | tetris shaped lights that you can rearange :D |
| Sculptor | it's half past 10 am |
| Sculptor | and i skipped a dinner yday |
| Sculptor | rather hungry |
| tawr | Drakonite: buy neopixel rings |
| Drakonite | tawr, already have them |
| Drakonite | already have all the electronicals |
| JoeLlama | hey Sculptor go eat something |
| tawr | oops, didnt mean to export video |
| Sculptor | i found a forgotten candy bar and i had it this morning |
| Drakonite | the outer numbers are going to be with breakouts, not the rings, because it's too big |
| Sculptor | it's not that bad |
| JoeLlama | nice breakfast Sculptor |
| tawr | Drakonite: |
| tawr | that's how i built this |
| tawr | individual neopixel dots on 3/8" pcbs |
| tawr | it was 240+ solder joints |
| Drakonite | er, to be clear, it's the design of the framing I mean; which is probably going to be mostly 3d printed parts. My 3d printer isn't big enough to do as one print though, which complicates it |
| tawr | i used 24g solid hookup wire to solder it together |
| Sculptor | heh, neopixels |
| synx508 | all the talk of LEDs has be thinking about the ongoing project that I was too chicken to take on. 190k LEDs on a car. |
| yvi | i have a 160W 13.8V power supply and want to use it for +12V ATX pc and some other +12V things. as a know-nothing i have looked around a bit and supposedly using a rectifier diode with a voltage drop that puts within ATX spec is the way to do it? |
| Sculptor | adaduckt it invented that term - neopixel |
| synx508 | I'm still convinced it's going to turn into a giant fireball |
| Sculptor | they existed long before adaduckit found about them |
| Drakonite | neopixel is easier to say and type than ws2812b, and I think everyone here knows they are the same |
| JoeLlama | if we can fry a candy bar we can fry anything! |
| JoeLlama | mmm |
| flor1an | if need be with plastic wrap, that is |
| flor1an | it is friday, sorry. |
| Drakonite | "I didn't say they couldn't, I said you shouldn't!" |
| flor1an | friday flag set. |
| mitmf | SopaXorzTaker: hello |
| mitmf | SopaXorzTaker: i have success |
| p0g0 | JoeLlama: Recall the "Fry Baby"? I once withnessed one that had melted it's plastic lid into the fry oil-the tempura cooked in that looked like a Denny's menu, glossy, plastic coated food. |
| n2 | Hmm |
| n2 | Anyone good with IC manufacturer logos? |
| Miyu | got a picture for us? :) |
| archivist | you will probably find a site with them collected |
| n2 | Miyu, http://ee.david.promo/iclogo.png |
| n2 | It's sort of a three-pointed star |
| n2 | in a circle |
| n2 | split by its points |
| Miyu | what kind of chip is it? |
| n2 | it's an op amp |
| n2 | AH i got it |
| n2 | it's thomson. |
| n2 | i.e. STMicroelectronics |
| Miyu | nice :) |
| n2 | it's old |
| n2 | it's from week 13, 1985 |
| n2 | performs better than most newer though... |
| n2 | The reason I'm asking is because I'm preparing a little opamp shootout article... :P |
| Miyu | I see :) |
| n2 | And the TL074 (the device), well... |
| n2 | Earlier in the article, I prove that manufacturers matter |
| n2 | Identical devices aren't identical |
| Miyu | and yeah, it being an older chip doesn't make it easier to ID the manufacturer :) |
| n2 | So I'd rather get the manufacturer right |
| Miyu | sounds like an interesting article :) |
| Miyu | ACTION eyes the likely knock-off Ti LM324s on her desk |
| archivist | they shrink the die over time to reduce cost I bet they get worse |
| n2 | Miyu, actually, the knockoff is better than the original |
| n2 | my tested device is the 2902, which is the quad 324... |
| Miyu | they are? Go China, I guess :) |
| n2 | and the non-Texas Instruments performs better |
| n2 | in this application |
| n2 | :P |
| Miyu | :D |
| Miyu | I just went for the cheap option in this design |
| Miyu | didn't need speed :) |
| Miyu | just boosting a voltage, basically |
| Miyu | which changes slowly |
| Miyu | so an LM324 is already overkill |
| n2 | The LM2902 can't sustain an oscillator over about 10KHz... |
| n2 | speed is always relative |
| n2 | :P |
| Miyu | went for SOIC parts on the PCB |
| Miyu | they're yet another manufacturer... |
| Miyu | ACTION forgot, despite having soldered a dozen of those chips by hand now :D |
| Miyu | focusing on the pins, not the printing, I guess |
| Miyu | but yeah, for non-critical applications just about anything goes, I guess :) |
| Miyu | https://hackaday.io/project/27548-wifi-ac-controller <<-- the project :) |
| n2 | Nice! |
| n2 | Interesting project |
| Miyu | thanks :) |
| Miyu | got one of them installed on the ceiling here at the office so far |
| Miyu | for testing purposes |
| Miyu | working all right so far :) |
| Miyu | can control the 3 AC units hooked up to it |
| Miyu | or coil fan units, I should say :) |
| Miyu | but the basic design could be used to control a lot of different AC-type things |
| Miyu | broke out the remaining IO as well |
| n2 | http://ee.david.promo/OpampShootout/ |
| intranick | :o |
| n2 | Miyu, http://ee.david.promo/OpampShootout/ |
| password4 | :OO |
| intranick | :OOO |
| Evidlo[m] | do fluorescent ballasts fail in some common way |
| p0g0 | Evidlo[m]: dunno about that, but they sure do fail. |
| n2 | Evidlo[m], depends on the ballast type |
| n2 | there are several common types |
| Miyu | n2: thanks :) |
| n2 | Miyu, finished it while you were gone. |
| Miyu | ACTION just did a big Win10 update :D |
| n2 | If you read it, please tell me what you think of it! |
| Miyu | okay :) |
| JFK911 | the best flouro failure is the one where it wont start in the dark |
| JFK911 | ever had this? |
| n2 | JFK911, yea |
| intranick | ACTION throws an egg at JFK911 |
| Evidlo[m] | n2 (IRC): its a four pin fluorescent |
| n2 | the light photons add ionization energy |
| p0g0 | JFK911: yep, even had ones that would light up with a bit of illumination... not a big fan of the old timey 8' bulbs. And how to legally dispose of them, as they are barred, in this state anyway, from muni landfills. |
| JFK911 | p0g0: county hazmat day |
| JFK911 | mine is tomorrow |
| p0g0 | What is that? |
| p0g0 | We don't have those here. |
| JFK911 | hm |
| JFK911 | how are you supposed to throw away paint and batteries and motor oil then |
| p0g0 | No fire dept picking up hazards, etc. We're expected to cocktail into the muni stream or just toss them whereever... |
| JFK911 | hard to believe |
| JFK911 | last person who told me there was no hazmat collection, i found the counties in his region partner with a disposal company to provide that |
| p0g0 | Oil has places, batteries no, paint only if it is entirely dry, no fluids. |
| Evidlo[m] | so in the US, most balasts are starters AND ballasts? |
| p0g0 | You can recycle your lead acid batteries without too much trouble, but all the rest... |
| JFK911 | p0g0: if the county wont take nickel batteries, lowes etc. does |
| p0g0 | Evidlo[m]: depends on the age, the oldest ones had starters. |
| JFK911 | lowes will take cfl too im not sure about tubes. |
| JFK911 | electronic ballasts probably don't have separate starters. |
| newcoder | Suppose battery of android-phone is 100% charged, then if it's charged for another extra 3 hours, will it create problem? |
| p0g0 | JFK911: the nearest lowes is 60 miles away. |
| JFK911 | newcoder: no |
| newcoder | JFK911: Why not? |
| n2 | newcoder, it has a battery controller |
| n2 | it will prevent overcharging. |
| JFK911 | newcoder: the charger will stop. |
| n2 | If you charged the battery directly, then it'd maybe cause a problem |
| n2 | but you don't |
| n2 | there's controlling/charging circuitry in between |
| newcoder | n2: Charging accessories are provided by the android-phone manufactures. |
| n2 | Not accessories |
| n2 | Within the actual phone |
| n2 | Around the battery |
| n2 | Between the power supply and the battery |
| n2 | there is circuitry in the phone |
| n2 | to control the charging |
| newcoder | n2: Why would I do that? |
| n2 | You wouldn't |
| n2 | Just explaining to you how the charging works in the phone |
| JFK911 | a clip on charger should stop charging too, if its any good |
| Miyu | n2: good article, very good summary and intriguing results :) |
| Miyu | ACTION would love to read more opamp benchmark articles :D |
| Miyu | or maybe something similar for other components :) |
| n2 | That's what I'm considering! |
| Miyu | :D |
| n2 | I was surprised to see the CMOS amp fail relative to the others |
| n2 | didnt see that comint |
| n2 | *coming |
| Miyu | ACTION nods |
| Miyu | at least I found a new favourite opamp, I guess :) |
| archivist | cmos low current then slow slew rate |
| n2 | For that application, anyway |
| n2 | archivist, the slew rate isn't the issue |
| n2 | the accumulated phase shift must be |
| royal_screwup21 | super noob question: In an N-MOSFET, we've got a drain, source and gate. The "source" and "drain" are made out of n-type semionductors, is that correct? |
| archivist | slew rate limits the frequency |
| n2 | yes |
| n2 | but if you look at the article |
| n2 | you'd see that it's not a slew rate problem |
| n2 | Op amp oscillator circuits aren't limited by the slew rate, anyway |
| archivist | so you say, but why should I believe |
| n2 | Not unless you're using a 100KHz op amp |
| p0g0 | faith? |
| n2 | archivist, So I researched the problem after doing the testing |
| n2 | https://www.ti.com/sc/docs/apps/msp/journal/aug2000/aug_07.pdf |
| n2 | Don't believe me |
| n2 | Believe the experts |
| n2 | :P |
| n2 | :P2 |
| n2 | "Voltage feedback op amps are limited to a few hundred kHz because they accumulate too much phase shift." |
| n2 | What contributes to phase shift? Capacitance. |
| n2 | CMOS op amps even though they have an excellent slew rate |
| n2 | has a poorer phase margin due to the higher internal capacitance |
| n2 | (of the transistors forming the circuit) |
| n2 | Besides, archivist, op amps with identical GBW and worse slew rate perform better in that specific application |
| archivist | remember the high output impedance and load capacitance with some |
| JFK911 | p0g0 its nuts your county operates a landfill but wont deal with household hazmats |
| JFK911 | we're not allowed to put bottles and cans in the landfill. $500 fine |
| JFK911 | (if busted) |
| Evidlo[m] | well, I was going to have a look inside my ballast, but its sealed under folded steel AND potted |
| n2 | archivist, it's not a particularly high output impedance device |
| n2 | None of the parts are specialist parts, either |
| n2 | All of them are general purpose |
| p0g0 | JFK911: my county has no landfill- those are state level permits. There is _no_ penalty for stuff here, in practice. Heck, we had a guy dumping TENORMS in the local landfill and they never charged him with a crime until the public went ballistic, then all he got was a civil charge. |
| p0g0 | JFK911: we're still in the diaper phase of waste management here, training the public to use muni waste collection rather than throw it over the hill or burn it in the yard... |
| p0g0 | complicated things, politically complicated things, like enforcement... we're still making small steps, not big ones. |
| p0g0 | JFK911: on the other hand, we have made great progress in the last 20 years. The river I live on no longer flows with trash, it supports beavers, osprey, eagles now. That is a huge step, and it took a lot of work to get rural trash collection installed across the state, so, in the big picture, we are not far from being civilised. |
| JFK911 | what state is this |
| JFK911 | i live in nc which is kind of backwards itself |
| p0g0 | Kentucky |
| JFK911 | oh my neighbor |
| JFK911 | you're on the other side of the hill. |
| JFK911 | work sent me to pike county once. wow. |
| p0g0 | yep, so our trash doesn't flow your way (much) |
| JFK911 | driving around there reminded me of driving around provincial russia. |
| p0g0 | the phrase "Pikers" came from there... |
| JFK911 | Yup |
| p0g0 | Pike County is one of the most affleunt here... imagine the poor ones. |
| JFK911 | Wow |
| JFK911 | I drove to va from cinci once. it was all pretty |
| JFK911 | But pikeville was like... a rock |
| p0g0 | Pike had large met coal reserves, and thermal... made a lot of money. They managed to get a local elected governor too. |
| Evidlo[m] | can you design a 120VAC ballast with entirely passive components? |
| royal_screwup21 | in the diagram here https://prnt.sc/h5oup9 why is that if I connect x to Vss, the top P-MOSFET will be disconnected? |
| p0g0 | Pike county is a mess, when I was advocating for the internet in the 1990s, Pike County officials pretty much ran me out of the room, to protect coal... |
| p0g0 | JFK911: tho, the governor they sourced, Paul Patton, was decent and available- I spent a bit of time with him over internet and security things. |
| p0g0 | That worked out well, considering. |
| p0g0 | ACTION heads off to another day that is too warm for this time of year... |
| ^7heo | come on |
| ^7heo | just enjoy the warmth |
| ^7heo | why can't you just take the good part? :) |
| ^7heo | Whatever if it makes our kids die in terrible suffering; we have a slightly warmer autumn! |
| paulrs | what are self healing fuses ? |
| n2 | paulrs, https://en.wikipedia.org/wiki/Resettable_fuse |
| royal_screwup21 | in the diagram here https://prnt.sc/h5oup9 why is that if I connect x to Vss, the top P-MOSFET will be connected? |
| paulrs | was more wondering about smd ones |
| n2 | Same same |
| n2 | Same technology |
| paulrs | ill find a datasheet |
| n2 | The packaging doesn't matter much |
| paulrs | i see |
| Sculptor | paulrs, they are great when speed is of no imprtance |
| Sculptor | importance |
| n2 | yes |
| n2 | they don't fuse particularly quickly |
| n2 | Twitter: Employee briefly shut down Trump's account on last day of work |
| n2 | Holy shit. |
| n2 | Haha. |
| paulrs | i nearly made a bad taste juke there :) |
| paulrs | joke* |
| n2 | Juke, joke, what does it matter? |
| n2 | :D |
| paulrs | when trump came a long i gave him the benifit of the doubt thinking me might be a nice,inteligent guy |
| paulrs | think i may have been wrong |
| NGC3982 | the thing is, his personality did not really help that his control is awful |
| NGC3982 | one could hope that he was just a doofus but his politics might work |
| NGC3982 | but.. well, here we are. |
| jsoft | He seems to have good intentions |
| jsoft | From my perspective anyway. |
| NGC3982 | of course, but who doesnt? |
| jsoft | Hitler did not :) |
| jsoft | Hillary did not |
| NGC3982 | yes, he did. we all think we do things because it feels good |
| NGC3982 | you mean: he seems to have -your- good intentions? |
| jsoft | No I mean he seems to want to do stuff for america, not just his donors and what not |
| NGC3982 | im not american, and i do not feel that way. |
| jsoft | nor am I, and I do. |
| NGC3982 | but since this is #electronics, i think we shouldnt bark louder at each other than this. :) |
| jsoft | Therefor your opinion is wrong. :P |
| NGC3982 | hehe |
| NGC3982 | inb4 IRC all-caps flame war |
| jsoft | It is entirely related to electronics, because of electrons. |
| NGC3982 | and the plutonium in the ordered nuclear weapons have lots of 'em! |
| jsoft | Yeah they do stuff |
| NGC3982 | in my galaxy, we do not have nuclear weapons |
| NGC3982 | we have plutonium tho. mostly tangled up in gas clouds after a few old stars went bust. |
| NGC3982 | the reason we do not have nuclear weapons might be that i dont have intelligent life yet |
| NGC3982 | its a shame |
| NGC3982 | would totally be worth an ICBM or two |
| jsoft | Is your nick name some galaxy designation or something? |
| JFK911 | its his inmate number |
| jsoft | Anyone seen that Flea86's girlfriend is active on the facetube again? |
| jsoft | Last one was a part 1 of making a mag loop antenna |
| NGC3982 | jsoft: New General Catalogue 3982. Ursa Major, 68Mly. yours truly! |
| jsoft | wtf does all that mean |
| jsoft | Is that some space jargon? |
| jsoft | Ahh |
| jsoft | A picture of you: https://en.wikipedia.org/wiki/NGC_3982 |
| jsoft | Looks purrrdy |
| gurki | \o/ |
| tawr | Be nice jsoft it takes 68 million years for him to get your message. Fucking lag. |
| Duckle | man |
| jsoft | I thought the gubberment had made inter dimensional super luminal deep space comms ? |
| Duckle | he doesn't even have internet yet |
| Duckle | he will have by the time our messages gets to him though |
| password4 | ooooh |
| password4 | we have a star on our hands |
| intranick | ACTION upgrades password4 |
| Duckle | password4: Quite a few actually |
| password4 | meh |
| password4 | intranick, maybe next time |
| OdinYggd | Government has interdimensional comms. They just don't know how to listen |
| password4 | i dont feel like it now |
| OdinYggd | But everyone already knew that |
| intranick | password4: upgrade damnit |
| Spirit532 | Hey, so bad news. |
| Spirit532 | I'm getting negative replies from some companies saying that they don't have the software |
| Spirit532 | One company - the distrubutor of the software for my camera, got in touch |
| Spirit532 | and dropped my jaw a little |
| Spirit532 | It's 3900 EUR |
| jsoft | Yay java! |
| Spirit532 | Yay java, I guess |
| jsoft | Enterprise grade software |
| Spirit532 | I don't think that one is java |
| Spirit532 | But that one was always a paid option |
| jsoft | Ahh then it might just work |
| Spirit532 | 3900 eur |
| Spirit532 | I asked for a trial and said I'll sign an NDA |
| Spirit532 | Hopefully they send me the binaries |
| Spirit532 | Because I'm great at cracking software :^) |
| jsoft | :D |
| jsoft | As soon as you get it, go 'jokes roflcopter hax0r' |
| Spirit532 | basically yes |
| Spirit532 | well, after I check if it works with my camera |
| Spirit532 | because if it doesn't, I'm even more screwed |
| password4 | sorry , i run out of fucks to give |
| password4 | might obtain some at the store |
| jsoft | Crack their software, and then have the cheek to go 'hey your cracked software does not support X, and has a bug at Y' |
| jsoft | password4, I hear the bar is giving out fucks |
| Spirit532 | if I sign an agreement and tell them I cracked it |
| Spirit532 | I will likely get shafted by law |
| jsoft | Spirit532, Then just say 'Yeah I had a muscle spasm and accidentally cracked it'. |
| Spirit532 | That only works if they send me a free USB auth stick |
| Spirit532 | grrr, hate those things |
| jsoft | Yay dongle 2.0 |
| tawr | Spirit532: what software is this |
| Spirit532 | Visart 2.1 |
| Spirit532 | NOT visart.io |
| Spirit532 | the Artho Visart |
| archivist | just crack the "passed the dongle test" flag |
| OdinYggd | Oh yeah, friggen hardware dongles |
| Spirit532 | this retarded thing |
| OdinYggd | I have one that requires a parallel port |
| OdinYggd | Ancient thing really |
| Spirit532 | https://www.google.by/url?sa=t&rct=j&q=&esrc=s&source=web&cd=8&ved=0ahUKEwis4vWjsaLXAhVM26QKHZk8ADgQFghZMAc&url=http%3A%2F%2Fwww.hsvision.de%2Fen%2Fcomponent%2Fphocadownload%2Fcategory%2F2-downloads-en%3Fdownload%3D45%3Aflyer-for-visart-pdf&usg=AOvVaw3uIuN_-oOhigV82KRtQCzk |
| Spirit532 | are you serious |
| Spirit532 | google why |
| OdinYggd | But I end up building workstations with a physical parallel port on them to make the dongle work |
| jsoft | Lol remember floppy disks? |
| jsoft | Those quietly stopped appearing on computers a while ago aye |
| jsoft | Wait |
| jsoft | Damn it! My computer has one |
| intranick | what is a floppy disk |
| jsoft | Oh no, no, thats actually sd cards in a floppy disk sized thingy |
| jsoft | intranick, I dunno, some ancient artifact |
| intranick | jsoft: could you play frisbee with them? |
| jsoft | intranick, Only the ancients would know. Perahps consult the scrolls for clues |
| tawr | jsoft: i have a 10+ year old usb floppy drive |
| tawr | which is much better than the alternative, intranick's floppy 3.5" |
| jsoft | ooooh |
| intranick | hey its a groweer not a shower |
| intranick | show-er |
| tawr | rofl |
| python476 | hola |
| tomeaton17 | Anyone who has studied ee or comp sci at uni which one do you think is a more useful course |
| jsoft | ee |
| jsoft | of course I have not studied either :) |
| archivist | the one to suit your interest |
| OdinYggd | jsoft, what size of floppy disc |
| OdinYggd | tomeaton17, electrical engineering by far |
| jsoft | OdinYggd, 5 inch |
| OdinYggd | computer science is proving to be a useless degree, you end up with a job as a programmer and everyone complains at how useless oyu are until you have 5 years experience |
| jsoft | All the comp sci stuff seems all wanky and too theoretical based off a passing glance. |
| tomeaton17 | So is experience not a problem with ee jobs? |
| OdinYggd | jsoft isn't it properly 5 1/4"? Also have you ever played wtih 8" floppy discs |
| jsoft | OdinYggd, Yeah 5.25 |
| jsoft | never touched 8" |
| OdinYggd | She likes the 8" better. |
| jsoft | No doubt |
| tomeaton17 | I am doing a year intership before uni at an aerospace company so I have some experience |
| OdinYggd | tomeaton17, EE is a smaller field, but there is a stable demand for people to design and build all the automated equipment in modern usage. |
| OdinYggd | They work with computerized systems, but deal more in the physical hardware actually wiring up all the modules and making them behave as a team |
| jsoft | ee uses programming and all that crap anyway |
| OdinYggd | also EE has the option to divert to power electrics if electronics engineering becomes too brain-intensive |
| OdinYggd | They share fundamentals and underlying theory. What changes is the size of the equipment, and the safety precautions required |
| tomeaton17 | So you would be able to get a programming job with an ee degree? Im ok with programming because I am doing stm32 dev this year |
| jsoft | tomeaton17, *shrug* |
| jsoft | tomeaton17, Im doing stm32 dev stuff now, with no degree :) |
| archivist | if your interest are mainly programming then go that way |
| jsoft | I wonder if/when employers/hr are going to realize degrees are not everything ( especially for just programming jobs ) |
| archivist | bad being in a job without interest and aptitude in the subject |
| tomeaton17 | I did loads of programming when I was younger but it got a bit boring just doing stuff on a screen. I find manipulating tangible objects with programming more exciting |
| jsoft | tomeaton17, yeah man. |
| jsoft | tomeaton17, I was in IT and switched over to electromagics |
| archivist | it is HR that is clueless, workers will check for aptitude and interest |
| jsoft | archivist, assuming they can get the candidates past HR |
| jsoft | They are the gateway |
| archivist | a bad one |
| jsoft | Oh looky what I found, a bourbon! |
| archivist | this is why I say match your interests with the course |
| archivist | I got a funny look from a student when I asked for his hobbies |
| archivist | then he got it |
| jsoft | He got what |
| tomeaton17 | I think ee is for me then. I am really enjoying what i am doing this year |
| OdinYggd | <jsoft> I wonder if/when employers/hr are going to realize degrees are not everything ( especially for just programming jobs ) |
| OdinYggd | Not going to happen |
| OdinYggd | The entire point of the degree is to fool the HR Department into thinking you know what you are talking about. |
| jsoft | tomeaton17, yeah its awesome. |
| archivist | jsoft the link between job and interests |
| OdinYggd | The people you actually work with don't even get to talk to you till you are already on the job |
| OdinYggd | and discover very quickly that you have a degree but don't know shit. |
| OdinYggd | I'm in this boat too, I want to get out of this maintenance office and go more towards engineering, but most advertised positions want a BS degree. |
| jsoft | OdinYggd, I dunno, I dont see how a degree magically makes you any better off generally than a joe bloggs non degree guy when it comes to a new problem |
| OdinYggd | Even though I have 8 years experience in the field with automated equipment handling all aspects of its use, maintenance, and design |
| OdinYggd | Exactly jsoft |
| OdinYggd | The degree does not reflect your talents. |
| jsoft | I dont have a degree, Im just guessing here |
| OdinYggd | It only shows that you paid a lot of money for a scrap of fancy paper |
| archivist | degree only shows you stuck at a course |
| jsoft | All the people whom I have dealt with whom have degrees, are not really that flash |
| jsoft | not not all, but most |
| archivist | effin arts degree being the lowest :) |
| jsoft | lol |
| jsoft | arts degree |
| jsoft | I got annoyed at work, being told that you need years at uni to impliment a digital filter. So I got drunk and made one that evening |
| jsoft | Then got slightly distracted and am still working on it :D |
| Helle | jsoft: and can you now prove that it works ? |
| Helle | jsoft: note, I did actually take a course on it |
| Helle | actual filter design, not the big deal |
| Helle | showing the properties and why it works, and being able to figure out new stuff from that, the big deal |
| jsoft | Helle, yeah I brought it in to work the next day ( when I new they would be showing their demo board ). We had to plot the responses, and mine was more betterer, theirs was absolute tits |
| Helle | jsoft: oh, I am not saying you can't do it based on a night of googling |
| Helle | I've done that before the course |
| Drakonite | I could search the net and learn everything I needed to know about it faster than you could realize you forgot too much and needed to look it up again ;) |
| Helle | it's more, if you have very specific requirements, you may run into issues |
| jsoft | Helle, I am not saying I understand the maths. |
| Helle | I've designed regular filters layered on kallmann filters for various tasks, on fixed point math platforms |
| Helle | that one broke my brain |
| tomeaton17 | jsoft: Did you mean the one they made was good |
| Helle | had to get someone else in to just help me order the whole problem set we where running into |
| jsoft | tomeaton17, no it was shit |
| jsoft | Absolute shit |
| Drakonite | jsoft, "the tits" generally means "very nice" |
| jsoft | Barely resembled a sine wave @ 1000 khz |
| jsoft | Drakonite, we use 'it was the tits' to say its good. |
| jsoft | Drakonite, but 'that thing is tits' means bad |
| jsoft | Kinda weird I guess, but yeah |
| tomeaton17 | english for you |
| jsoft | tomeaton17, so whatchya working on, anyways? |
| tomeaton17 | jsoft: I have an internship at an aerospace company, and I am designing a battery management system for LiPos on drones |
| jsoft | Oh ok, cool |
| DocScrutinizer05 | damnding job |
| DocScrutinizer05 | demanding even |
| jsoft | Its fucking cool though eh, all this tech shit |
| jsoft | I love 'here goes a problem, make some shit which fixes it' |
| DocScrutinizer05 | wel, for drones the security level is somewhat relaxed, compared to e.g. a 747 |
| tomeaton17 | Well we are working for some quite high security people.. |
| DocScrutinizer05 | btu avionics and LiPo is a receipe for headache |
| DocScrutinizer05 | LiIon that is |
| jsoft | Due to pressures and temperatures and what not? |
| tomeaton17 | LiPos are great but dangerous |
| DocScrutinizer05 | due to some nasty habits of LiIon |
| jsoft | Oh ok |
| jsoft | Yeah batteries are something I am not up with the play on. I have not dicked with anything beyond lead acid because I don't want to catch fire if I cock it up |
| magic_ninja_work | hey, so when evaluating series-parallel circuits with inductors and capacitors how do I treat their impedance. |
| jsoft | Going to have to have a good ol read at some stage |
| DocScrutinizer05 | jsoft: good decision ;-) |
| jsoft | magic_ninja_work, that sounds like a homework question |
| jsoft | ;) |
| tpw_rules | magic_ninja_work: are you familiar with the frequency domain? |
| magic_ninja_work | yea, omega? |
| tawr | ^heh |
| tpw_rules | but yeah, it sounds like you need to read your book more |
| magic_ninja_work | jsoft, yea it is a homework question |
| tawr | we dont do homework. |
| tomeaton17 | this is the pcb I made for it https://i.imgur.com/6RbRg7v.png |
| jsoft | lol |
| tpw_rules | it's quite simple |
| tpw_rules | have you tried asking your teacher or friends? |
| tawr | needs more scribbles tomeaton17 |
| DocScrutinizer05 | magic_ninja_work: capacitors resp inductors mutually, or mixed? |
| jsoft | magic_ninja_work, in summary, its a magically changing frequency dependant 'resistance' |
| tomeaton17 | Lol I dont want to show you the company |
| tawr | tomeaton17: smart move, i was just messing around |
| jsoft | tomeaton17, You should hook me up with a job. I made a led blink and installed java once |
| magic_ninja_work | DocScrutinizer05, basically, it is an inductor with a cap and resistor in series. I know the cap and inductor have an imaginary component and have calculated that component, I'm just not sure how to use them in the equation for the circuit. |
| tpw_rules | magic_ninja_work: that's the neat thing about the imaginary components. they're just resistors, but imaginary |
| magic_ninja_work | I've done all the leg work, just not sure how to bring it home hehe. |
| tomeaton17 | :p I am regretting choosing 0603 resistors |
| DocScrutinizer05 | capacitor and inductor form a resonator, which changes about everything |
| tpw_rules | so you can use all your stuff like putting resistors in parallel, just in complex numbers |
| tomeaton17 | jsoft: haha well they are hiring for fpga devs |
| magic_ninja_work | so my final answer will be in the form of a complex number |
| tpw_rules | yes |
| tpw_rules | but like how do you put two resistors in series? R1 + R2 |
| jsoft | Complex numbers in the impedance world really is just the phasor rectangular representation right? |
| magic_ninja_work | That makes sense. Thanks guys. |
| tpw_rules | jsoft: yeah |
| tpw_rules | so just add your R and the complex number you got for the C and you've got their combination in series |
| magic_ninja_work | jsoft, yes. |
| jsoft | Yeah I was trying to wrap my brain around complex numbers for ages, going 'wtf are they on about and why wont they tell me what this complex number shit is' |
| DocScrutinizer05 | tpw_rules: that only applies when there's no L near the C |
| jsoft | and its really nothing much |
| tpw_rules | DocScrutinizer05: what do you mean |
| DocScrutinizer05 | LC |
| tpw_rules | jsoft: complicated numbers |
| jsoft | From my understanding anyway |
| tpw_rules | DocScrutinizer05: it still works. unless you mean physically proiximate? |
| jsoft | I was happy though, because I discovered my HP-15C can do complex numbers :) |
| tpw_rules | i've taught my n-spire cas so much stuff |
| tpw_rules | i love it |
| magic_ninja_work | hehe, the complex number thing isn't all the confusing, what is confusing me is that I have this resistor and capacitor in parallel and I can't really evaluate |
| tpw_rules | how do you evaluate two resistors in parallel? |
| DocScrutinizer05 | for a resonator you won't get reasonable results from impedance alone, near resonat frequency |
| tomeaton17 | I want to get a cas calculator but I wont be allowed it for exams |
| magic_ninja_work | (1/(1/R)+(1/Xc)) |
| tpw_rules | yup. so just put in the impedance for the cap in for Xc and compute |
| DocScrutinizer05 | meh! |
| tawr | magic_ninja_work: so open up falstad |
| Drakonite | jsoft, after I watched the videos from the guy that made the hackrf, I came to the conclusion that complex numbers (which are just 2 dimensional numbers) are the real numbers, and 'real' numbers (which are 1 dimensional) are just simple/partial numbers :P |
| tawr | and play around. |
| tawr | and bring it home, so to speak |
| jsoft | tomeaton17, I had a 50G which I was not allowed to use in exams. I brought my 15C in and they thought 'that thing cannot possibly be programmable' |
| tawr | install LTSPICE |
| tpw_rules | *pulls out magnetic tape* |
| tomeaton17 | :) They didnt check my calculator for my uni entrance exams so I could have had anything I wanted on it |
| jsoft | Drakonite, I watched videos from the same guy about his approach to RF pcb design, and I liked his 'yeah fuck it' approach |
| Drakonite | jsoft, I was constantly told I couldn't use a calculator on tests because "You're not going to be carrying a calculator around with you everywhere".. |
| tomeaton17 | I have always wanted to put a custom mcu inside a ti case |
| Helle | tomeaton17: because you will hit your head on the wall quickly enough if you did |
| jsoft | Drakonite, hah! :D |
| DocScrutinizer05 | https://en.wikipedia.org/wiki/LC_circuit |
| Peyam | What can I use analogue signals for in a plc |
| Helle | at uni we where allowed at least a dumb calculator for all tests, I used one to avoid some silly errors, but I had to do so much actual algebra that I'd need a CAS to help even a little |
| magic_ninja_work | hmm. I don't remember the rules, but I bet this calc can do imaginary numbers hehe |
| Peyam | why would I use a analogue variable? |
| jsoft | I assume you guys are aware that RPN > * ? |
| Drakonite | jsoft, he has a series on SDR, which covers complex numbers, and it's the best explanation of the topics I've seen |
| Helle | jsoft: yes |
| password4 | tomeaton17, are your moral limits limit by how easy you can get caught? |
| Peyam | jsoft, what is RPN? |
| jsoft | Helle, ;) |
| Drakonite | jsoft, don't you mean: RPN * > |
| Helle | Drakonite: hehe |
| jsoft | Drakonite, haha :D |
| Helle | although I'd love a Lispy calculator |
| Helle | (> RPN *) |
| tomeaton17 | password4: I guess its basic risk analysis |
| Helle | but RPN is very nice |
| jsoft | Drakonite, I don't think I have seen that one. I shall have to have a geeze |
| Helle | don't own one |
| password4 | tomeaton17, not for me |
| Helle | because them prices |
| jsoft | I bought two 15 C's |
| jsoft | Fucking love them. |
| jsoft | So usefull. |
| password4 | why not 200 K's? |
| tomeaton17 | For my exams anyway I didnt need a cas calculator numeric calculus was enough to check my answers |
| Drakonite | jsoft, https://greatscottgadgets.com/sdr/6/ (though I recommend starting from the first video) |
| Helle | iirc the HP smartcalc is the cheapest but hard to get here |
| tomeaton17 | password4: I didnt cheat btw |
| jsoft | Aint the interwebs great. |
| Helle | tomeaton17: the thing with exams is you typically need to so much show your work (and also in stuff related to it, like assignments, etc), you don't really gain anything |
| Helle | tomeaton17: having also graded the damned things |
| Helle | it was easy to spot who just used calculators to verify (just fine) |
| Helle | and those who tried to cheat using them |
| password4 | tomeaton17, cool |
| Helle | note, typically, tried, because the steps they wrote down for "show your work" didn't /quite/ make sense |
| tomeaton17 | Yeah, the classic "show that question" fudge! |
| Drakonite | In algebra2 I borrowed a calc book from the teacher, taught myself some calculus, and then used that to write a program on my calculator that could solve systems of equations. She decided if I could do that it was okay for me to use it on the tests. |
| jsoft | What's calculus again? |
| Helle | Drakonite: I would argue the same if I where assisting the course |
| jsoft | Area under the graph shit right? |
| tomeaton17 | rates of change |
| Drakonite | I always got in trouble over "showing my work" because I'd naturally take multiple steps in my head |
| Drakonite | jsoft, I always just think of it as "the shit after trig" |
| Helle | Drakonite: yeah, but that is why we also allowed students who seemed to have done that to discuss the grading |
| tawr | lol i've literally passed an electronics class final by doing every single inductive reactance and capacitive reactance and transconductance / admittance calculation wrong. but i did them wrong in such a way i got th right answer. |
| jsoft | Drakonite, hah :D |
| Helle | Drakonite: most of them came out fine with that, I myself do it, so I knew what to ask for |
| jsoft | tawr, high five :D |
| tawr | every. single. one. of them. the teacher called me up the next day to talk to me while laughing to himself |
| jsoft | tawr, how is it wrong though if it was the right answer? |
| Drakonite | Helle, I think by writing a program to do the work, and explaining to the teacher how it worked, I demonstrated I understood it |
| Helle | Drakonite: yep |
| tawr | and he was like 'what the hell were you doing. you literally got every single one of them right, but you did it entirely wrong. i'm not even sure what you did.' |
| jsoft | tawr, hah :D |
| tpw_rules | Drakonite: i did that with partial fraction decomposition |
| tawr | and i wasn't prepared, i didn't even have my calculator so i gave all 3 of my sheets i used to show work with it. it was great |
| Helle | Drakonite: I have genuinely recommended lecturers allowing people to pass based on such demonstration of knowledge |
| tpw_rules | fortunately my teachers don't care much. they just want work to give partial credit |
| Helle | Drakonite: like, at a top 50 world university |
| tawr | jsoft: i should find it, i kept most of my assignments and tests |
| Drakonite | Helle, sadly, most math classes I've had were of the "if you don't do it 100% exactly as I said, it is wrong" variety |
| Helle | because it's way more in line with what a university should be testing for |
| tpw_rules | although then you transfer all your knowledge into interpreting the quirks of the cas engine |
| Helle | Drakonite: ugh |
| tpw_rules | :P |
| Drakonite | (which is still not as bad as many of the classes my friends had) |
| tomeaton17 | Thanks for the info everyone |
| Helle | I still hope to make lecturer at some point |
| Helle | because I damn well would want to try my hand at a old fashioned university style, where you solve a problem with the students to give them the skills and check that they know how to apply it to further knowledge |
| tpw_rules | my classes kind of work like that |
| Helle | tpw_rules: I've done a few like that |
| Drakonite | I've talked to a few CS teachers about helping them improve their programs. I'm hoping to have that come up again and have it work out |
| Helle | but they had to "sneak" that in |
| tpw_rules | i think the labs are taught terribly though here |
| Helle | while I just want to tell the uni, this is what I want to test out |
| Drakonite | I worked with a few people that had taught at a uni that was in the progress of getting accredited, and learned that the whole accreditation thing pretty much kills off the ability to try new things and teach in any way other than the current broken system |
| Helle | Drakonite: yeah, that is why the lecturers here who do this, sneak it in |
| tpw_rules | what describes the "current broken system"? Cause i've seen a large variety of teaching styles |
| tpw_rules | even from entrenched profs |
| Helle | tpw_rules: the problem is how accreditation works |
| Helle | both national accreditation and by the bodies of the field the study falls under, the intersection of those two typically restricts a lot |
| Spirit532 | I progressed a little more |
| Spirit532 | https://i.spirit.re/wsB5D.png |
| Spirit532 | This is where it dies |
| Drakonite | tpw_rules, I guess I mean the curriculum as much as anything? I dunno. I'm too tired to know what I mean |
| Spirit532 | I have no idea what it can mean though |
| tpw_rules | i mean i can definitely believe the curriculum |
| Helle | Drakonite: no, it's accreditation that kills it, that limits the curriculum and how it can be tested for |
| tpw_rules | but i'm not sure it's right that it limits the teacher. in my experience |
| Helle | but it also breeds creative work arounds |
| ztychr | Is this the right place to ask about sdr-rtl? |
| tpw_rules | maybe my dudes have just been doing it that way for 40 years and no accreditation board will tell them shit :P |
| Drakonite | yeah, that is what I mean. accreditation fucks things up, and a big part of that is it's requirements on curriculum |
| Helle | like a exam that is "Yes, I know my stuff" |
| Helle | like, literally one check box |
| Helle | because the rest had been tested in project forms, discussions, etc |
| Drakonite | ztychr, you can certainly try |
| Helle | but they had to have an exam, but it didn't specify what kind |
| tpw_rules | oh, i see what you're saying |
| tpw_rules | yeah hm |
| tpw_rules | i can't disagree |
| Drakonite | the people I worked with were fired from the school because their classes didn't follow under the curriculum |
| tawr | ztychr: you could |
| tawr | tons of people play with them |
| tawr | if it's a simple question i'm sure you'll get an answer |
| tpw_rules | i dunno. i might be biased. i seem to do well with a traditional teaching style |
| ztychr | http://tinyurl.com/yagopuzc |
| electrobot | ztychr just linked to www.amazon.de (SODIAL USB2.0 Digital DVB-T TV-Tuner-Recorder-Empfaenger-Stick: Amazon.de: Computer & Zubehör) |
| tawr | hats a super old version ztychr |
| tawr | *that |
| tawr | and expensive. |
| ztychr | bought this item. Can't figure out anywhere, what frequencies it can receive. Says DVB-T 6, 7, 8 mhz |
| tawr | ztychr: oh you're actually trying to use it for TV?? LOL |
| tawr | no one uses those for tv bud :) |
| ztychr | tawr: No. To receive frequencies. not for tv |
| tawr | it receives around 80mhz to 1ghz ztychr |
| tawr | it's an older version (v1 of chips/board), it's not as good as newer models with newer chips |
| ztychr | tawr: Thanks. That'll be fine. |
| tawr | if you plugged it in and opened a program you could have just found out what it receives |
| tawr | sdr#, gqrx, rtl_sdr in linux, etc |
| ztychr | tawr: Takes a while to ship it thoughj |
| tawr | i wouldn't buy it |
| tawr | if you haven't bought it yet |
| Drakonite | tawr, at least with mine, it doesn't actually tell me what range it supports |
| ztychr | tawr: I have lol. Mind linking some youd recommend? |
| tawr | ztychr: okay look at the name of the chips it uses (it's right there) |
| tawr | there is v2. why don't you type "rtl sdr" and look at what's available. aluminum enclosures, t2 chips, VXCO, VNA dc power, direct sampling, SMA ports instead of crappy mcx ports, better antennas, etc |
| tawr | and v3 |
| tawr | check ebay and aliexpress instead of amazon :) |
| python476 | received my ebay gifts earlier |
| python476 | a bunch of sad sad crocodiles and probes |
| python476 | annnd ultrasonic sensors ! |
| python476 | time to wake up the esp |
| phinxy | How many ohms should be between a car antenna and center pin on coax? |
| phinxy | The cable length is < 1 meter |
| phinxy | My multimeter says 18 ohms. |
| jsoft | hmm? |
| magic_ninja_work | Should be zero if there is nothing there |
| jsoft | Should be zero I think |
| phinxy | 75 / 100 ohm antenna is something else? AC impedance or something?? |
| magic_ninja_work | That is the input and output resistance |
| magic_ninja_work | And yes, it is used to filter out unwanted signals. |
| password4 | tawr, 1 got genius idea :D |
| jsoft | Deploy the idea! |
| ztychr | tawr: R820T2 would be preferable yeah? |
| magic_ninja_work | phinxy, really, what we would need is a diagram of the antenna to know for sure. There could be something in the assembly that we aren't aware of. I ran into this the other day doing an automatic chicken coup door opener |
| ztychr | RTL2832U* |
| password4 | you know those base plates on trucks to lower the towing hook? |
| kcrow | should be close to zero ohms |
| password4 | i think I'll use them to make a press instead |
| tawr | ztychr: there are different chips. they do different things |
| password4 | these types http://www.mig-welding.co.uk/forum/data/attachments/13/13545-32e5532af7da553c2c669febde4a72a4.jpg |
| tawr | t2 is better than just 820 etc. this would be a "good" one https://www.amazon.com/NooElec-NESDR-SMArt-Bundle-R820T2-Based/dp/B01GDN1T4S/ with upgraded crystal aluminum enclosure SMA connectors, etc |
| kcrow | it is a good choice |
| password4 | but my budget is blown upto feb :( |
| tawr | pintle plates? they're usually 3/8 or 1/2" password4 |
| tawr | dude go to a welding shop / steel supplier, you'll find random plates with holes in them there. |
| password4 | well its 1/2" more than have now |
| tawr | like footing plates |
| tawr | for dirt cheap |
| password4 | i cant fucking get it |
| tawr | with 4 holes or more already drilled |
| tawr | in various sizes etc |
| password4 | i dont know why i mention my ideas to you |
| DocScrutinizer05 | phinxy: should be close to zero, 19 Ohm sounds a tad on the high end |
| DocScrutinizer05 | phinxy: which type of car antenna? telescope? |
| jsoft | I wonder if you can tx rf into a dummy load, and demodulate it |
| user3209 | Do NiCd batteries have to be charged slowly? |
| jsoft | Based off of heat sensing the load |
| DocScrutinizer05 | jsoft: huh? |
| jsoft | Like say am into a load, and temperature sense the load |
| DocScrutinizer05 | jsoft: ooh, yes, depends on the heat capacitance of the load |
| DocScrutinizer05 | which forms a low pass filter |
| SpeedEvil | user3209: most are best charged slowly - at the 14 hour rate - 1/10th capacity for 14 hours. |
| user3209 | I thought they could be quick charged since they can be discharged very quickly, but the charger is only using 5W so it takes forever |
| SpeedEvil | user3209: their life may be reduced if charged faster, especially if charged continually at a rate over that |
| jsoft | DocScrutinizer05, hmm |
| password4 | tawr, i dont know why , but finding baseplates here are extremely diffucult |
| password4 | especially anything above like 5mm |
| DocScrutinizer05 | user3209: generaly only heavy duty cells can get fast charged |
| password4 | you basically have to order a 2x3m plate unless you know someone |
| DocScrutinizer05 | user3209: and only by using special fast charger |
| user3209 | they discharge at 8A since they're powering a vacuum cleaner, so they drain in about twenty minutes, but it takes about 12 hours to charge |
| DocScrutinizer05 | user3209: this is more gentle to the cells and also due to cheap charger circuitry |
| user3209 | special how? I have a bench power supply, but obviously it doesn't sense temperature or anyhting |
| DocScrutinizer05 | yes, exactly that sort of stuff |
| DocScrutinizer05 | temperature, delat-V, delta-t etc pp |
| user3209 | also, I don't care about destroying the cells, they've already lost more than half their capacity after three years |
| user3209 | probably time I replaced them anyway |
| DocScrutinizer05 | then they are not fit for fastcharge anymore |
| SpeedEvil | user3209: You may also be able to replace the pack with a DIY lithium pack. |
| DocScrutinizer05 | no, don't! |
| SpeedEvil | But probably best to shy away from that if you're not up to speed on batteries |
| ztychr | tawr: https://www.ebay.com/itm/RTL-SDR-Blog-RTL2832U-1PPM-TCXO-HF-BiasT-SMA-Software-Defined-Radio-Antennas/272411452020?epid=1548295945&hash=item3f6cfce274:g:yKcAAOSwL5BZwksO would this be a "good one?" |
| user3209 | I was thinking of it, but all I've got is NCR18650B cells and they're rated for 2A discharge so I'd need like 40 of them |
| SpeedEvil | you can get NiMH cells in the same form factor likely, which will be a notable improvement in capacity. |
| DocScrutinizer05 | cheap shitty vacuum has a diode and a series R for "charger" |
| SpeedEvil | But, NiCd replacement cells would need no changes. |
| user3209 | how many NiMh cells do I need to discharge 8A |
| DocScrutinizer05 | err, that's a nonsense question |
| archivist | one the right size |
| DocScrutinizer05 | :-) |
| SpeedEvil | Waht is the vacuum cleaner. |
| user3209 | I'm assuming I would be using standard size batteries, like AA, or C size NiMh |
| DocScrutinizer05 | you need as many cells as the voltage you need, and they need to provide 8A continuous in the config you connect them |
| user3209 | right but batteries have a max discharge for safety/internal resistance right? |
| user3209 | and NiCd has better discharge characteristics than NiMh |
| archivist | you can put some in parallel |
| user3209 | of course, but how many? |
| DocScrutinizer05 | watch out! replacing NiCd with NiMH is dangerous when you have that crappy cheap "constant current" charger in your vacuum. I bought a vacuum that had that Cd -> MH change by manuf and it burned my flat |
| archivist | 2 into 8 |
| user3209 | currently it uses two packs of five C size NiCd batteries |
| DocScrutinizer05 | NiMH have a termal runaway property |
| SpeedEvil | DocScrutinizer05: Interesting. |
| user3209 | well I wasn't planning on using the NiCd charger to charge the NiMh batteries |
| archivist | get some similar then |
| SpeedEvil | DocScrutinizer05: with a slow charger? |
| DocScrutinizer05 | series R from AX 12V |
| DocScrutinizer05 | AC |
| SpeedEvil | With fast charge, it's bad. |
| ShadowJK | user3209, some people are of the opinion that fast charging nicd inflicts less damage on them than slow charging, but only if the fast charge is done properly. This involves sensitive deltaV evaluation and deltaT cutoffs. With a bench supply, you're likely to violently overcharge the pack, which will result in the batteries' safety valves opening. This will result in loss of water, which results in loss of capacity, quickly. |
| user3209 | Ideally I want to get some second hand tool batteries and pull the 18650s out of them to make a lithium solution for ~10.8V nominal 8A |
| tawr | password4: go to a welding shop. or steel supplier. they are there |
| user3209 | ShadowJK did you mean NiCd? |
| DocScrutinizer05 | what ShadowJK said ^^^ |
| ShadowJK | user3209, both |
| ShadowJK | user3209, nimh is more sensitive and require more precision than nicd, but they're otherwise somewhat similar |
| user3209 | I had heard that - the NiCd are more resistant to abuse with how you charge/store them |
| user3209 | the main trouble is the significantly reduced capacity over NiMh |
| DocScrutinizer05 | NiMH (old) also have much higher self discharge |
| SpeedEvil | user3209: 10*1.2=12V, not 10.2 |
| SpeedEvil | 8 |
| user3209 | they have 10.8V written on the device for some reason |
| SpeedEvil | odd. |
| ShadowJK | I have a Li-Ion drill with 10.8V written on tehe battery pack |
| jsoft | tehe |
| SpeedEvil | user3209: are you sure they're nicd? |
| DocScrutinizer05 | 3 * 3V6 |
| kludge | Put them on a nicad charger. If they explode into bright flame, they were lithium. |
| user3209 | well, it's printed on the shrink wrap "NiCd" but I suppose it could be lying |
| DocScrutinizer05 | ShadowJK: LiFePO? |
| DocScrutinizer05 | hmm no |
| filadome | i was looking at an Israel coin |
| filadome | they don't use arabic numbers |
| SpeedEvil | user3209: or have you perhaps miscounted, and there are 9, not 10 cells |
| ShadowJK | DocScrutinizer05, nah 3.6V nominal per cell |
| user3209 | I know my CREE LED torch isn't a 10,000Lumen krypton bulb |
| DocScrutinizer05 | LiIon underrated 3V7->3V6 |
| user3209 | ahhh, that actually makes so much sense |
| ShadowJK | DocScrutinizer05, some LG chemistries have things that stabilizes the lower voltage range, allowing for deeper discharge, sometimes those are marked as 3.6V nominal |
| DocScrutinizer05 | KiFePO is what?3.0? |
| user3209 | I did a thermal analysis on the battery packs and one of them stays cold when I charge them - that one must be a dummy cell for weight balance |
| DocScrutinizer05 | ShadowJK: :nod: |
| kludge | user3209: or a failed one. |
| user3209 | so yeah, nine cells |
| ShadowJK | And then, iirc, Panasonic and Samsung have modified chemistries that stabilize the upper voltage range allowing for up to 4.35V, ad those are sometimes marked as 3.8V nominal |
| DocScrutinizer05 | user3209: no |
| user3209 | I thought it was a failed one, but if it's supposed to be 10.8V then |
| SpeedEvil | kludge: well, if it's 10.8v, it makes sense one is dummy |
| kludge | SpeedEvil: easy enough to cut it open if it's a dead pack anyway. |
| SpeedEvil | kludge: otherwise it'd be 12v |
| SpeedEvil | user3209: what mAh cells |
| DocScrutinizer05 | hmmmm |
| kludge | SpeedEvil: yes. |
| DocScrutinizer05 | dummy cell, what a weird concept |
| user3209 | as a counterweight to keep it balanced - since the batteries are a significant portion of the weight of the handheld device |
| kludge | DocScrutinizer05: Used to see them for combination alkaline/NiCD packs. You could put in N NiCds or N-1 alkalines. |
| DocScrutinizer05 | weight dummy cell even more weird |
| kludge | If you put in the alkalines you had to put in the plastic dummy. |
| jsoft | Why not another cell |
| kcrow | I am a dummy load antenna ! |
| SpeedEvil | jsoft: cost! Or exceeding max motor volts |
| DocScrutinizer05 | kludge: we're talking about a dummy in a NiXX pack though, right? |
| kludge | ACTION fills kcrow with hazardous oil. |
| kcrow | ACTION heats up |
| kludge | DocScrutinizer05: yes, presumably to make it fit in a place designed for something else originally. |
| user3209 | no mAh marking on the pack - and they're paper wrapped cells inside the shrinkwrap for some reason |
| DocScrutinizer05 | what is that "something else"? |
| SpeedEvil | user3209: what size are the cells |
| kludge | DocScrutinizer05: THAT is the PUZZLE! |
| user3209 | roughly C size, but I think slightly smaller maybe |
| user3209 | just a sec I'll put the calipers on them |
| tomeaton17 | Whats the highest power psu people have worked with? |
| DocScrutinizer05 | which peaople? ;-D |
| kcrow | 50kW |
| kludge | ACTION worked with 180 amps at 3kv once, it was scary. |
| jsoft | kludge, crikey |
| tomeaton17 | what provides that much power |
| kludge | Once I dropped my pocketknife into a 15A 3KV transmitter supply, and it pretty much disappeared. |
| kludge | tomeaton17: radio. |
| DocScrutinizer05 | oooh, e.g. a gas turbine |
| DocScrutinizer05 | fits on a pickup |
| kcrow | PG&E, 9megawatts available, 50 kilowatts used |
| user3209 | 40mm length 22mm diameter |
| user3209 | but I think they're wrapped |
| jsoft | High voltage can fuck off in my books. |
| kludge | kcrow: And 70 kw billed for? |
| jsoft | I like my innocent 5v bread boards |
| tomeaton17 | 3.3 is more my style |
| kcrow | the billing wasn't my department ;) |
| jsoft | 3.3v? Pussy |
| jsoft | :P |
| e | high voltage is fine, high current is scary |
| jsoft | yeah but even high voltage low current gives me frights when it gets me |
| tomeaton17 | its the perfect mcu voltage |
| jsoft | Why is 3.3v perfect? |
| synx508 | it isn't. |
| e | lots of them run their cores much lower |
| DocScrutinizer05 | kludge: I hope you had proper protective waer |
| kludge | Things change around 100V or so and then they change again around 500V or so and then they change totally around 5000V or so. Transmitter supplies are in-between 500 and 5000 for the most part... there is corona and the like but not much of it. |
| user3209 | I'm thinking that the 10.8V is because they designed the thing, then realised it overheated and instead of redesigning anything major they just swaped out one of the cells for a dummy |
| DocScrutinizer05 | wear* |
| DocScrutinizer05 | LOL |
| jsoft | in other news, I love my van :D |
| DocScrutinizer05 | user3209: chinese smart design? |
| kludge | DocScrutinizer05: It was long enough ago I just had a leather apron, gloves, and a facemask. We get the blue arc jackets now. |
| user3209 | chinese smart design. |
| e | kludge: it depends on frequency too |
| kludge | e: Oh, yeah. I guess I think of RF as being a different thing than current electricity too. |
| kludge | RF follows different rules but they are predictable and fascinating ones. |
| e | predictable but weird |
| tomeaton17 | because most hobby modules use 3.3v |
| magic_ninja_work | kludge, wearing those suits in MCC's is terribly hot, even if they are well-cooled |
| e | i like my electricity to stay in the wires |
| DocScrutinizer05 | hehehe |
| kcrow | I like arcs |
| DocScrutinizer05 | which it doesn't >1MHz | >1kV |
| kludge | e: Sure, but the whole idea that I put current in this wire and it generates an E field that generates a B field and so on and induces current in a wire in Chicago is just so incredibly cool. |
| kcrow | neon sign trasnformers help me with that |
| n2 | When you have to have a photo in your corporate magazine |
| n2 | because you're featured in an article |
| magic_ninja_work | Around here it is 0-50, 50-240, 240-600 and 600-1kV. Then after 1kV it starts over at medium voltage |
| kludge | kcrow: So YOU have been screwing up my radio reception. |
| n2 | and you don't know what to do? |
| n2 | Go cat: http://ee.david.promo/ThePhoto.jpg |
| e | kludge: it is cool! |
| kcrow | three spark gap trasnmitters ! |
| kcrow | I mean Jacob's Ladders |
| kludge | n2: that is an excellent picture. |
| n2 | kludge, the cat is in a perfect pose |
| n2 | it was a lucky shot! |
| kludge | It always is with cats. |
| n2 | Indeed. |
| n2 | He's photogenic. |
| n2 | ACTION loves his cat |
| Sculptor | where's the cat pic |
| synx508 | I'd like to know how cats do the teleporting thing |
| synx508 | it happens so often |
| synx508 | like, moments ago I let one of our cats out from the front door. The only way she could've got back in is via the cat flap at the back of the house but I live in the middle of a terrace |
| DocScrutinizer05 | user3209: you may consider getting a new vacuum instead of messing with repair of the battery pack. Might be cheaper too |
| synx508 | and I've made myself a cup of tea, returned to my desk and she's asleep on our bed |
| user3209 | you guys seen the compressed CO2 based cooling suites they use for explosive environments? |
| synx508 | and more than that, she looks as though she's been there for ages |
| Duckle | Hey peeps, would ethanol clean flux off of a PCB with no rubbing_ |
| Duckle | ? |
| synx508 | which is impossible |
| Sculptor | cat https://i.imgur.com/1Kw7E6N.gifv |
| Duckle | I just want to submerge the PCBs for ~10mins and then take them out and have them nice and clean |
| Duckle | and denatured ethanol is super cheap here |
| n2 | Duckle, IPA |
| n2 | from Matas |
| Sculptor | Duckle, get a chinese ultrasonic bath |
| Duckle | IPA is expensive :S |
| tomeaton17 | indian pale ale |
| DocScrutinizer05 | synx508: there are twins ;-) |
| Sculptor | but do it before you solder all the parts |
| kludge | Duckle: If it's normal rosin flux, no. BUT, a scrub brush and IPA will do it. |
| user3209 | probably Doc, but I'm just messing around with this vacuum cleaner and parts I have in my workbench |
| Duckle | dammit, okay IPA it is then |
| user3209 | I'm running it as a corded vacuum cleaner from by bench supply |
| kludge | Duckle: ethanol is probably only slightly worse than IPA but it depends how it was denatured. Some denaturants will leave nasty residue. Put some on glass and see. |
| Duckle | gotcha |
| kludge | Duckle: But the scrub brush is still important. |
| n2 | Duckle, https://www.matas.dk/matas-isopropylalkohol-99-500-ml?gclid=Cj0KCQjwp_DPBRCZARIsAGOZYBSJ9jg1vFu4AwkDMw-RZwgjfzMz3Qc3FTIxH1u8sQyRiAIbiveh9ToaAqCgEALw_wcB&gclsrc=aw.ds&dclid=CKKXnYrPotcCFQPFsgodHzgB_A |
| synx508 | DocScrutinizer05, my theory is like that, but involving quantum entanglement |
| user3209 | denatured alchohol you never really know what's in it |
| Duckle | n2: I need 2L to fill the container I have |
| DocScrutinizer05 | synx508: krhrhrhr |
| user3209 | laboratory ethanol would probably be similar to IPA, but denatured spirits or methelated spirits is a crapshoot |
| n2 | Duckle, https://lundteknik.dk/isopropanol-liter-p-12932.html |
| Duckle | n2: Not bad |
| Duckle | ville bare tøffe ned efter det nu :P |
| n2 | user3209, ethanol is hygroscoping |
| n2 | it sucks water from the atmosphere |
| n2 | *hygroscopic |
| user3209 | yes, if you leave it open |
| e36freak | you're hydroscopic |
| user3209 | on a surface it's going to evaporate before it gathers much water |
| Duckle | found the denature formula requred here |
| DocScrutinizer05 | n2: which is a welcome property sometimes |
| Duckle | 2 sec, converting it to percent :) |
| n2 | user3209, more that the ethanol itself will contain water |
| n2 | in any reasonable container |
| n2 | bloody azeotropics |
| user3209 | IPA is only 99%, the rest is water |
| kludge | n2: Scotsmen are always going on about that. |
| user3209 | I mean, you can do better than that, but it's expensive |
| n2 | user3209, that's still about an order of magnitude difference |
| kludge | And it doesn't stay that way once you open it anyway. |
| n2 | And, because of the increased polarity of IPA |
| n2 | if you dissolve any (potentially problematic) electrolytes into a water/IPA solution |
| n2 | the water/electrolyte will precipitate out |
| n2 | leaving you with a purer IPA |
| n2 | IPA abhors ions |
| Duckle | Okay, so in Denmark, by law, it's 2.8% IPA, it's 2.8% MEK, and 1g/100L denatoniumbenzorat |
| n2 | much more than ethanol does |
| DocScrutinizer05 | I'd go for denaturated spirit (after test on glas) every day |
| kludge | which is bad if it precipitates out on your board. |
| user3209 | huh, well I learned something today, thanks |
| n2 | kludge, which it won't |
| n2 | because it will precipitate in the container |
| n2 | :-) |
| n2 | My point is, with ethanol |
| kludge | SOME people will advocate organic acid flux instead because it's much easier to deflux. But it smells nasty. |
| DocScrutinizer05 | after all one of its most common usages is to clean glas |
| n2 | you can easily ADD impurities |
| OdinYggd | >acid flux |
| kludge | And it's probably bad for you. |
| OdinYggd | NOOOOO! |
| n2 | Also, Duckle |
| n2 | It's much EASIER to remove the flux with IPA |
| OdinYggd | The WONDERFUL world of corrosion! |
| n2 | than denatured ethanol |
| kludge | DocScrutinizer05: that's what people want you to think but they are really cleaning their insides. |
| n2 | That's just a fact :P |
| Duckle | dammit |
| xDR1TeK | hi |
| OdinYggd | I would expect IPA to be a higher purity alcohol than denatured |
| Duckle | well I guess I'll go buy 500mL then, and clean by hand |
| DocScrutinizer05 | kludge: with denaturated spirit? BLARGH! |
| OdinYggd | since denatured is what 70% ethanol with benzene and MEK? |
| n2 | Duckle, if you want more power |
| kludge | I would not say MUCH easier, but it's a good bit easier with IPA. And it's really a major pain to do it with IPA. |
| n2 | 50% IPA + 50% acetone |
| n2 | that way it WILL be much easier |
| Duckle | OdinYggd: I posted the formula above :) |
| n2 | much lower water content |
| Duckle | OdinYggd: in Denmark, by law, it's 2.8% IPA, it's 2.8% MEK, and 1g/100L |
| n2 | and the acetone won't ruin your day |
| n2 | MEK = methyl ethyl ketone |
| user3209 | denatured is shit, but if you have that and you don't have IPA then you gotta piss with the dick you got |
| n2 | smells badly |
| Duckle | yep |
| OdinYggd | MEK is wonderful stuff. Don't breathe it. |
| OdinYggd | I thought they were using a benzene in the denatured ethanol |
| Duckle | I find the 1g/100l of denatoniumbenzorat more intersting |
| kludge | OdinYggd: Ours is mostly pyridin, I think. |
| Duckle | OdinYggd: This was the formula passed into law in 2013 |
| DocScrutinizer05 | OdinYggd: Denatoniumbenzoat (1 Gramm/100 Liter) |
| DocScrutinizer05 | +MEK |
| n2 | OdinYggd, nope |
| n2 | benzene is for absolute alcohol |
| tawr | lol |
| n2 | Denatured is ment to be not drunk |
| n2 | i.e. it must smell and taste horrible |
| user3209 | you tend to find benzene compounds in laboratory ethanol to try to get the last bit of water out |
| n2 | MEK smells horribly |
| tawr | i was trying to figure out why my vape tasted so nasty, i just put fresh cotton in, my hands were clean, i scrubbed everything |
| n2 | Denatonium salts /taste/ horribly |
| tawr | then i looked down and i left the temp at 600F to dry burn the crud off the coil and forgot to turn it back down lol |
| n2 | Denatonium is also marketed under the name "Bitrex" |
| n2 | i.e. |
| Duckle | and it makes you nauseous as well |
| n2 | the king of bitter |
| n2 | lol |
| kludge | benzene is not added deliberately to absolute, it is an unfortunate contaminant that comes through the column as an azotrope and is hard to get rid of. |
| Duckle | my friend decided to breath fire at a party, and we only had denatured ethanol |
| n2 | kludge, it is preferred over water |
| n2 | since it is a more energetically favorable azeotrope |
| Duckle | he was complaining about the taste the rest of the night xD |
| n2 | than EtOH/water |
| kludge | M28: Right. |
| kludge | n2: right. |
| kludge | n2: But it is bad for drinking. |
| Duckle | Denatonium, usually available as denatonium benzoate (under trade names such as BITTERANT-b, BITTER+PLUS, Bitrex or Aversion) and as denatonium saccharide (BITTERANT-s), is the most bitter chemical compound known, with bitterness thresholds of 0.05 ppm for the benzoate and 0.01 ppm for the saccharide.[2] It was discovered in 1958 during research on local anesthetics by MacFarlan Smith of Edinburgh, Scotland, and registered under the trademark Bitrex. |
| Duckle | [3] |
| Duckle | ... |
| Duckle | sounds pleassant |
| n2 | kludge, it certainly is. |
| n2 | There is also the option of using deliquescent salts |
| n2 | like calcium oxides |
| Duckle | 0.05 ppm |
| n2 | but that combination will have a short shelf life |
| Duckle | daanm |
| kludge | Although after hearing about russians drinking phenol from railroad cars I will believe people will drink just about anything. |
| user3209 | better than putting methanol in it and killing a bunch of bums |
| n2 | kludge, IPA is actually rather nontoxic |
| n2 | And it does work as an intoxicant |
| DocScrutinizer05 | OdinYggd: ;EK is hostile to stuff that isn't sensitive to pure ethanol :-/ |
| Duckle | it's fun to squirt at people |
| n2 | It's worse than ethanol, yes |
| Duckle | it cools a lot |
| DocScrutinizer05 | MEK* |
| splud | er, denatured ethanol? So stoopid - in the US, it is 'denatured' so that the manufacturers don't have to pay alcohol taxes on it. |
| Duckle | beacuse it evaporates so quickly |
| n2 | splud, same here. |
| kludge | n2: Yes, my grandfather's neighbor drank the 70% IPA. but only Walgreen's brand. It did kill him, but it took a decade. |
| Duckle | splud: same here |
| Duckle | it's for cleaning |
| Duckle | ACTION is now known as KindOne too |
| DocScrutinizer05 | splud: same here (D) |
| Duckle | well, better run before matas closes |
| splud | may be useful for a lot of things, and yea, I used some recently for cleaning, but to add toxics to it just for taxation reasons is stoopid policy. |
| user3209 | you think people wouldn't drink cleaning ethanol? They still try to find ways to drink it even with the denaturing compounds in it |
| n2 | kludge, a wife of a US presidential candidate drank IPA... |
| n2 | user3209, they don't anymore |
| n2 | the old denaturants were easy to remove |
| n2 | now, they aren't |
| n2 | and they are much more unpleasant. |
| kludge | n2: Betty Ford? |
| n2 | kludge, Kitty Doukakis i believe |
| kludge | n2: Ahh, okay. Also makes sense. |
| user3209 | I've seen people drinking distilled denatured alcohol, they say it still tastes terrible, but you can keep it down |
| kludge | n2: I can understand how being married to a lot of presidential candidates would make one drink anything too. |
| n2 | kludge, especially the current president |
| n2 | although she has to keep slim |
| n2 | so amphetamines |
| splud | there's a recipe for an exciting evening, eh? |
| DocScrutinizer05 | user3209: I've seen a guy drink perfume |
| bart416 | oops, I parked 66 kilonewton on top of my polyimide foil, lol |
| DocScrutinizer05 | freaking mad |
| bart416 | entered the comma incorrectly on the vacuum press |
| bart416 | It'dll be flat :D |
| kludge | DocScrutinizer05: I have drunk some Italian aperitifs that were like drinking cologne, I think. |
| DocScrutinizer05 | hehehe |
| splud | oh, agnostra. ehwwwww. |
| user3209 | My friend has offered to share pills with on multiple occasions despite him not even knowing what they were *supposed* to be |
| JFK911 | ^ hangs out with bill cosby |
| n2 | hahahah |
| user3209 | he's like, "My dealer says they're good shit" |
| kludge | ACTION gives user3209 a very powerful laxative. |
| user3209 | and I'm like - how about no |
| tomeaton17 | probably amphetamines |
| nohop | amphetamines good. rat poinson bad. |
| user3209 | one of them I identified as probably Vallium, the other was some kind of upper, so probably amphetamines |
| splud | damn, I can't remember the name of some particular drink I got while I was at the Munich airport (wasn't German, just where I was). |
| splud | Gawdawful thing. |
| DocScrutinizer05 | unless you got a mass spectro, you should rather steer clear of that shite |
| tomeaton17 | just get some marquis reagent |
| user3209 | I recorded myself getting drunk because I didn't think I was affected that much... watching the recording later - I was so wrong. :/ |
| n2 | tomeaton17, doesnt cover enough by itself |
| n2 | you'd need the mandelin, too |
| DocScrutinizer05 | apropos mass spectro, did somebody hear about that sugar cube sized one hitting the market meanwhile? I seen it like over 10 years ago, a guy from Fraunhofer shown it to me |
| jsoft | Do you guys think they will ever send hippos into space? |
| redrabbit | what for |
| user3209 | jsoft I don't know why they would |
| tomeaton17 | n2: I only have experience when using it to pid something |
| DocScrutinizer05 | "vacuum? not needed, the gap between those two plates is so tiny, only single molecules can come in anyway" |
| kludge | If you want to terraform a warm water-bearing climate, hippos might be a good addition. |
| user3209 | tjat |
| user3209 | that's a pretty long way off |
| DocScrutinizer05 | "high voltage? the distance between electrodes is so tiny, you get insane V/m fields with just 5V" |
| kludge | DocScrutinizer05: put a grid in the middle and voila, planar grid triode! |
| kludge | IT'S GAIN FROM NOTHING! |
| user3209 | UNLIMITED POWARRRRR! |
| jsoft | wtf is wrong with you people |
| jsoft | What is wrong with a hippo in space |
| jsoft | A hipponaught |
| jsoft | it would be hillarious |
| magic_ninja_work | don't |
| magic_ninja_work | get out |
| jsoft | Seeing one trying to fix a sattelite or something |
| jsoft | Bumping it into like a clumsy idiot :D |
| magic_ninja_work | Why did I want to go back to school again? |
| DocScrutinizer05 | why not Orcas, they are smarter |
| kludge | jsoft: I think more likely you'll just have grossly overweight people who are shaped like hippos. Would that be sufficient? |
| jsoft | No. |
| kludge | DocScrutinizer05: yes, and used to zero gravity anyway. |
| jsoft | I want to see what NASA would come up with for a hippo helmet |
| DocScrutinizer05 | indeed |
| kludge | jsoft: Aren't hippos some kind of ungulate? Don't ungulates fart constantly in a horrible way? |
| kludge | I don't think you could get hippos S-rated. |
| DocScrutinizer05 | ACTION idly wonders if dolphins still have that little stone in ear for sensing "down" |
| user3209_ | I think I punned so hard I killed my internet connection |
| kludge | DocScrutinizer05: I'd assume so since they don't swim upside-down. |
| DocScrutinizer05 | :nod: |
| kludge | DocScrutinizer05: you'd think that whole vestibular system would be better than ever. |
| user3209_ | it's important for dolphins to know which way is up, since they need to surface to breathe |
| magic_ninja_work | kludge, that would be great. No ventilation in the space suit. |
| jsoft | kludge, that is the incorrect attitude kludge |
| DocScrutinizer05 | user3209_: ack |
| user3209_ | you have a ventilated space suit? |
| redrabbit | hippos in space.. maybe in some kind of distropian mansion with space pablo escobar 2.0 |
| user3209_ | doesn't that let all the space get in and blow up your face like in that movie? |
| jsoft | Cmon this needs to be done./ |
| jsoft | I think it would be funny as fuck |
| user3209_ | jsoft what psychoactive subsances are currently in your bloodstream? |
| jsoft | Just booze. |
| jsoft | but I have pondered apon this before :) |
| DocScrutinizer05 | hmmpf, why do I suddenly think about those two guys in "Brazil" un their suits |
| user3209_ | I think a hippocampus is eminantly more achieveable |
| jsoft | user3209_, whats that |
| user3209_ | it's when you bring your hippo to college with you |
| jsoft | lol |
| kludge | We have no brain here. Only controller. |
| bart416 | Intelligence and being in control are over-rated |
| bart416 | Also I bought a Keithley 238 |
| bart416 | lol, I managed to get three days into November without buying a piece of gear. |
| DocScrutinizer05 | time for %coffee |
| user3209_ | bart416 that's the beauty of excessive alcohol consumption |
| DocScrutinizer05 | hmm |
| DocScrutinizer05 | aah! time for ☕ |
| kludge | bart416: why? Going to do automated curve tracing? |
| bart416 | kludge, it was cheap |
| bart416 | Only 1100 EUR |
| bart416 | For an electrometer grade SMU |
| bart416 | The guy who previously owned it tried to fix it |
| kludge | bart416: input impedance is pretty high on those, I have used them on condenser mike stuff. |
| bart416 | But he used wirewound instead of carbon composit resistors as Keithley says you should use... |
| kludge | Why composites? |
| jsoft | Because hippos, thats why |
| bart416 | That's what it's called, I don't know man :P |
| bart416 | But as a result he gets a 100 uA open loop current |
| bart416 | But if you look up the service manual and schematics you notice those resistors are the reason |
| tomeaton17 | You love kiethley |
| kludge | The inductance of wirewounds is pretty high even when they call them noninductive but I'd be surprised that's an issue. |
| bart416 | <3 Keithley |
| bart416 | <3 Keithley |
| kludge | I hardly ever see composites today because of all the popcorn noise. |
| bart416 | Mhhh yeah but these run fairly high temp |
| bart416 | And knowing Keithley they took that into account on the design. |
| kludge | Weird. So it is happy now? |
| bart416 | I'll see Monday. |
| bart416 | Plus worst case scenario I'll just cal it away |
| kludge | I have a keithley bench DVM at home, it is solid and reliable and does not autorange. |
| bart416 | Ah, I have a bench DMM of theirs |
| bart416 | well, multiple actually lol |
| bart416 | But I pretty much only use the 2001, that thing doesn't do noise. |
| splud | Yesterday's post brought me some new RFID cards. My reader panel can pick them up from about 7cm - even through a hardcover book. |
| kmc | nice |
| kmc | now try a steel plate :D |
| archivist | or a tinfoil hat |
| kmc | lol |
| DocScrutinizer05 | hardcover book == air, on that topic |
| DocScrutinizer05 | well, almost |
| password4 | i cant wait for this shit day too pass , suchhunger such money spent |
| DocScrutinizer05 | which probably is one of the major points of RFID |
| user3209_ | does it have metalic ink on the cover /s |
| bart416 | password4, how much are you at today? |
| bart416 | I'm at 1300 EUR today :( |
| splud | Well, consider that I can install the panel recessed into the interior wall of my barn, and still read a card near the exterior wall (with no apparent reader there) |
| tawr | bart416 if i didn't know any better |
| tawr | i'd say you loved keithley |
| password4 | i dont even have that much to spend in more than a month |
| DocScrutinizer05 | ACTION starts selling jackets with alu foil, tagged "anti Taser, anti Lase, anti Maser, anti RF death rays" |
| tawr | but i'm not sure |
| splud | My present problem is sourcing suitable long-throw solenoids for a sliding door latch. |
| tawr | DocScrutinizer05: except they amplify.. |
| bart416 | tawr, mhhh seriously? |
| password4 | I'm at the point where I'm refusing to go by a bread |
| bart416 | I wouldn't have guessed. |
| tawr | splud: how long? aftermarket alarm system door lockers |
| majuk | Ermmm... https://imgur.com/a/5pDOs Bit 13... is two bits? what? |
| tawr | splud: most of them are 2"+ and geared motors |
| tawr | rack and pinion |
| SpeedEvil | splud: why are you not just looking on ebay for door lock solenoids |
| tawr | dc 12v |
| SpeedEvil | and yes |
| tawr | and dirt cheap |
| SpeedEvil | they are often not really solenoids |
| tawr | yeah just brought that up |
| bart416 | For the topic: Keithley Appreciation Moment: Nov. 31, 2017 - 17:00 CET |
| kludge | What about Boonton? Don't they deserve appreciation too? |
| bart416 | Sure |
| tawr | bart416: btw tgeeky just fixed his keithley 5 1/2 digit bench dmm |
| synx508 | the 238 seems nice, well done bart416! |
| bart416 | We can plan that in on the 32th |
| SpeedEvil | Solenoids generally produce 1/100th of the force*distance of a somewhat equivalent power rotating motor going at 6000RPM |
| Sculptor | SpeedEvil, tawr, are you talking about wax motors |
| bart416 | synx508, I'm semi amazed it wasn't picked up yet. It's been on eBay for weeks apparently :S |
| DocScrutinizer05 | particularly "nifty": Homematic door lock system, turning key in cyclinder |
| tawr | Sculptor: no |
| bart416 | But the tagging was weird |
| synx508 | bart416, those are the best buys usually! |
| synx508 | I have been failing at ebay lately :/ |
| DocScrutinizer05 | they are the opposite of "dirt cheap" though |
| Sculptor | tawr, ahh, electric door locks |
| kludge | Car door lock solenoids are often inexpensive but those also now often use motors. |
| Sculptor | wax motors, or wax sensors, are used for laundry machine doors |
| tawr | Sculptor: yes, he wanted a long throw solenoid, i brought up aftermarket vehicle door lockers, which are 12vdc geared rack and pinion modules that are a few dollars |
| Sculptor | and for car valves |
| tawr | kludge: i know, but that may be a benefit not a hinderance |
| Sculptor | ok |
| tawr | i go through them occasionally on my truck |
| tawr | well not any more but at one point i'd go through a pair every like 8-9 months |
| synx508 | most recently getting outbid on 8663A after failing to get the 5370B |
| tomeaton17 | I have used em locks to make the door system at my workplace |
| tomeaton17 | Its all good until there is a power cut |
| kludge | At work our system uses solenoids that keep the doors locked so if burglars cut the power the building opens up. |
| DocScrutinizer05 | ouch! |
| tomeaton17 | Yeah thats the same here the locks use power to keep it shut |
| user3209 | battery backup accessable from the outside like on an electronic safe |
| Sculptor | who wants a cheap electric door lock, here it is https://www.youtube.com/watch?v=opo6Fcwpbqo |
| electrobot | Sculptor just linked to Cisa Lock Release dead lock mechanism. (electronic use) - YouTube |
| kludge | Mind you when the power goes out a bunch of security guys show up all over the places. |
| Faux | Building fail-safe stuff is a pain, if you care about it not drawing a ton of current. :/ |
| tomeaton17 | The system is a complete PITA is was designed by a beginner who made no documentation and has now left the company |
| tomeaton17 | (I say left but I really mean sent back to jail) |
| user3209 | just a DC jack on the outside of the door so you can plug in a battery pack |
| kludge | tomeaton17: To jail for burglary? |
| kludge | I have mixed feelings about a locking system designed by burglars. |
| Faux | user3209: That's not safe, if there's a fire or the solenoid or electromagnet fails. |
| SpeedEvil | I strongly recommend watching https://www.youtube.com/watch?v=4YYvBLAF4T8 on security. |
| electrobot | SpeedEvil just linked to The Search for the Perfect Door - Deviant Ollam - YouTube |
| password4 | ily 2 hours to go , then i can make food |
| SpeedEvil | Why doors are often broken, and you don't even need to pick locks. |
| tomeaton17 | kludge No he was a paedophile |
| SpeedEvil | Or force the mechanism to unlock with other means |
| Sculptor | SpeedEvil, no doors can protect a guy with a mission |
| SpeedEvil | Sculptor: Well, no. |
| user3209 | I was figuring the exit doors would be mechanically accessable only to get out, whereas the door to get in can require more effort to open since you don't need to get into the building while it is on fire with as much urgency |
| Sculptor | s/protect/stop/ |
| Sculptor | s/with/on/ |
| user3209 | if the firefighters come they can just break the door |
| password4 | Sculptor, thats a very single minded argument |
| Sculptor | pardon my engrish |
| kludge | I am not worried about the guys with the mission, I am worried about students who have nothing better to do with their time than look for unattended tools. |
| SpeedEvil | Sculptor: but if your secure door has a 5mm gap underneath it and they can put a long wire under the door, and open it in 10s by grabbing the door handle from the other side. |
| password4 | what kludge say |
| user3209 | someone's been watching defcon |
| password4 | if you have people specifically going after you , you are screwed |
| SpeedEvil | Sculptor: or in 1s by spraying freeze spray through the top of the door, ... |
| kludge | Students took my brass mallet and my 47/64 collet. |
| Sculptor | a 5mm gap would be an awful audio and thermal insulator |
| password4 | but if someone just wanting to steal from anyone , their going to go with the easier target |
| SpeedEvil | Sculptor: cosmetic door seals to seal for thermal reasons do not help |
| user3209 | I opened a door with a PIR motion sensor on the inside by printing a black page on a laser printer and slipping it under the door to make it think someone was inside |
| password4 | urg |
| password4 | i shoul not have drank beers |
| Sculptor | i have a 55year old door |
| user3209 | the page was hot enough to trigger the PIR |
| user3209 | and get us into the Electronics lab after hours |
| password4 | ACTION tries to stop thinking of food |
| splud | On that topic, here in the USA, it's apparently "National Sandwich Day" |
| password4 | urg |
| password4 | nooooo |
| user3209 | is there any days left that aren't a national * day at this point? |
| password4 | ACTION looks around for forgotton coins |
| splud | My wife is working from home today, so assuming she doesn't have teleconference meetings, at lunch, I might take her to a Thai place in town... |
| archivist | ACTION shows password2 a lemon meringue pie |
| password4 | awe man , dont do that |
| splud | national election day is also "National Go F*** Yourself" day/ |
| splud | That's three asterisks, count 'em. |
| password4 | fool? |
| tawr | splud: did you read what we said |
| splud | tawr: when? |
| user3209 | no politics |
| user3209 | please |
| tawr | splud: when you asked about solenoids and i told you about car door unlockers |
| joe_z | splud, that may be good news for me, if local sandwiches places have the same buy one get one free deal |
| joe_z | (with purchase of drink ):< |
| splud | user: I wasn't speaking to any particular party or individual. Sorry. |
| password4 | ACTION wants to note that he is not associated with user3209 in anyway |
| splud | Yea, car door solenoid might be the way to go. |
| tawr | it's not a solenoid |
| tawr | it's a geared motor and rack and pinion |
| user3209 | no worries |
| splud | That though is a push-pull sort of thing. |
| tawr | and several inch |
| tawr | no it's not, not neccessarily |
| password4 | lol |
| tawr | most of them are spring loaded |
| password4 | push pull , several inch |
| password4 | your ex might get excited |
| tawr | so actuate = pulls in, depower = spring extends |
| splud | Well, it's either running the lock plunger one way, or the other. |
| kludge | The one in my car works that way. |
| tawr | it depends like i said, some have spring return, others are driven rack and pinion both ways |
| tawr | etc |
| splud | I've never had a car which was only unlocked while power was applied to the mechanism. |
| tawr | but they have >2" stroke, more torque than you'd think looking at them, are dirt cheap |
| bart416 | |
| bart416 | <synx508> I have been failing at ebay lately :/ <-- auchy |
| splud | Though, at the point I'm dealing with something like that, I need to implement an intermediate driver from the RFID board to handle the thing as something other than "unlocked while energized". |
| user3209 | windsheild wiper motors are beasts |
| bart416 | I ran like 20 bucks next to an R&S VNA |
| bart416 | I was so pissed |
| tawr | https://www.amazon.com/InstallGear-Universal-Power-Actuators-12-Volt/dp/B00CZBQCR2/ |
| tawr | splud: except not, the same way you'd use a solenoid you can use one of these, with a spring. |
| tawr | just like a solenoid would be used |
| user3209 | auto parts are super cheap from the wreaker yard |
| tawr | well, aftermarket ones are not like OEM's |
| splud | Will need to check into one. Ideally, from the inside, I want a latch that releases the pin (should always be able to exit without power), |
| tawr | these are for aftermarket adding power door locks |
| tawr | they are much more useful and universal than OEM systems |
| splud | the only wrecker yard around here is probably 25 miles north of here. Pretty spotty on parts at times. |
| tawr | splud: this would work. without an H bridge. spring closes it, power sucks it in or whatever |
| tawr | you wouldn't find one of these there, and if you did, you'd pay more than the new price on amazon for it |
| bart416 | I've been soldering in vacuum, damn nice solder joints |
| password4 | in a vacuum? |
| kludge | It's full of cat hair in there. |
| splud | The cold vacuum of space. |
| user3209 | how you you manipulate the iron in a vacuum, or is it a wave solder machine or something? |
| user3209 | * in a vacuum chamber |
| user3209 | do you have a vacuum glove box because that would be so cool |
| bart416 | user3209, lol can't say due to NDA :( |
| bart416 | It's a sweet trick though |
| bart416 | The metal grid is virtually perfect with this method |
| bart416 | Going to do some shear testing Monday. |
| user3209 | is vacuum better than argon inert atmosphere? |
| paulrs | do you need flux ? |
| bart416 | paulrs, yes |
| bart416 | user3209, apparently |
| user3209 | what does the flux do if there's no oxygen? |
| bart416 | Remove oxide |
| user3209 | ahh, since the PCB wasn't made under vacuum |
| user3209 | it already has oxides on it |
| user3209 | makes sense |
| user3209 | what if you etched the PCB in a vacuum chamber / inert gas environment - would you need flux then bart416? |
| bart416 | Probably |
| user3209 | do they make solder guns that spit out argon like a MIG welder? |
| user3209 | seems like that would be the simplest way to get an oxygen free solder joint |
| tawr | well migs don't usually spit out argon |
| Fuchikoma | I suppose you could rig up a hot air run to suck in 100% inert gas |
| tawr | tigs do |
| user3209 | tungsten is a metal :P |
| tawr | err yes |
| user3209 | what inert gas does a Metal Inert Gas welder use if not Argon? |
| tawr | and oxides on tungsten are a huge deal, even how you grind them is a huge deal |
| user3209 | unless it's a gassless mig |
| user3209 | which still seems like an oxymoron to me |
| tawr | most use 100% co2, a good LWS salesman will talk a hobbiest into C25 (which is more than an order of magnitude more expensive for the same amount of gas) which is 25% co2 75% argon |
| tawr | thats because it's not called mig, user3209 |
| tawr | it's called FCAW |
| Fuchikoma | GMAW* |
| tawr | no |
| tawr | that is literally the opposite |
| Fuchikoma | Then I have a machine that does the impossible I guess |
| tawr | mig is migaw, a subtype of gmaw |
| tawr | no you have a bad memory |
| tawr | flux core arc welding |
| tawr | FCAW |
| archivist | aluminium mig used argon when I was a lad |
| tawr | is not GAS METAL ARC WELDING |
| user3209 | what would happen if you tried to use nitrogen as the inert gas? |
| tawr | nitrides, user3209. |
| tawr | all gasses aside from argon are actually active in welding |
| tawr | they _DO_ things |
| tawr | and affect the arc, the weld pool |
| tawr | they do stuff besides provide atmospheric protection |
| Fuchikoma | No, I'm bad at following the conversation |
| tawr | but you were SO SURE a moment ago! |
| user3209 | there's a rare and seldom used diving mix called Argox which is used to reduce to cooling effect of Heliox and allow easier voice communication (no squeeky voice) |
| tawr | there are many gasses used for welding, even mig welding |
| Fuchikoma | I was right within the context of what I thought was being discussed! |
| Fuchikoma | Not my fault you were talking about the wrong subject |
| Sculptor | co2 welding - co2 |
| tawr | for regular steel and stainless welding you can run 100% co2 (which is what i recommend to everyone and what I use), c25, etc. then you start getting into weird stuff like trimix for SPRAYARC |
| tawr | which is a whole other world of mig. it's not really even mig (i mean it is, but the actual process is so different than short circuit or globular transfer) |
| Sculptor | tawr, don't work with co2 in a poorly vented room |
| tawr | Sculptor: that doesn't matter Sculptor |
| user3209 | vacuum welding when? |
| tawr | if anything it's the safest gas to do it |
| Fuchikoma | Don't weld period in a poorly vented rom |
| tawr | there we go |
| Fuchikoma | room* |
| tawr | argon 'poisoning' sucks |
| Sculptor | i does if you have leaks |
| Sculptor | it |
| tawr | your body doesn't have oxygen sensors. |
| tawr | you can detect CO2. that's it |
| user3209 | argon poisoning is just inert gas asphixiation |
| tawr | welding with co2 in a room with bad vent is the best case scenario |
| tawr | since you can FEEL it |
| tawr | with argon or nitrogen, there is no signs or symptoms |
| user3209 | yep |
| tawr | until it's too late, look no further than pilot training |
| user3209 | it's a popular suicide method on 4chan |
| user3209 | although usually they suggest helium |
| tawr | user3209: yeah. even though it shouldn't be, argon "FEELS" like it sticks to the bottom of your lungs over time |
| user3209 | helium no feelim |
| tawr | and you can't quite breath it out |
| tawr | so upside down or face down slightly declined |
| user3209 | it's heavier than air so that's not supprising |
| jaggz | or hyperventilate to mix it up and get it out? |
| user3209 | jaggz, standing on your head is more effective |
| user3209 | lol |
| jaggz | if you're capable enough |
| jaggz | [at the time] |
| user3209 | you can see Adam do it on mythbusters when he inhales a super heavy gas to give himself a deep voice |
| user3209 | sulfer hexafluride I think? |
| bart416 | <user3209> do they make solder guns that spit out argon like a MIG welder? <-- Yes |
| user3209 | jaggz, the important part is not to be standing upright. even laying on your side is pretty good |
| bart416 | They make solder stations that do that |
| bart416 | But honestly they're all inferiour compared to vapour phase soldering. |
| bart416 | You first replace the air in the chamber with nitrogen |
| bart416 | And then transfer heat with a fluorinated oil |
| jaggz | naptime! |
| bart416 | (That's boiling obviously to get the vapour) |
| bart416 | That way you have perfect solder joints always, heh |
| user3209 | jaggz recovery position for people with heavy inert gas inhalation, if you can't get them in the trendelenberg position |
| jaggz | (hrm.. I had a dream about some conspiracy about some chemicals called quinolones) |
| jaggz | forgot about that.. yesterday dream |
| jaggz | user3209, ahh.. as the gas continues to leave the body you need to continue to keep them at an incline |
| jaggz | how am I supposed to get Nitrous Oxide (food grade)? |
| jaggz | I need an actual canister of the stuff, not these stupid whipping things |
| user3209 | it's restricted I imagine - the medical grade stuff is for sure |
| jaggz | yeah they want an FDA permit.. others don't sell food grade.. |
| user3209 | since it's used as a recrational drug |
| jaggz | then there are food grade places that want to deliver it and charge $200 or something for a deposit |
| user3209 | huh, so you can get it. |
| jaggz | food grade (well, for the purpose of food) is, by law, unregulated. |
| bart416 | Uhm call up Air Liquide and place an order? :P |
| user3209 | what are you using it for that you can't use industrial grade? |
| jaggz | yeah but.. I can get a medical-grade refill for $30 (but I don't have a container).. and the food places don't seem to do refills or something. |
| theMagnumOrange | what is a good thing to call myself as a freelancer - embedded systems designer - embedded systems consultant...? |
| jaggz | user3209, food |
| jaggz | actually, technically it's soap :) |
| bart416 | Honestly, when I order gas bottles at work they don't even ask for any verification, just the delivery address was sufficient verification o_O |
| jaggz | but soap is not excluded from the law, specifically.. and I'll be testing this on food anyway |
| bart416 | It's fucking scary |
| jaggz | why scary? |
| user3209 | I know some guys that mix their dive gas (trimix) using industrial helium to save money - they haven't died yet. |
| user3209 | medical helium is expensive as fuck |
| bart416 | Uhm have you checked their catalogue? |
| bart416 | They throw around bottles of fluorine as if its nothing. |
| jaggz | oh.. not no2 |
| user3209 | NO2 for auto racing would be much easier to aquire and would probably be fine for soap |
| DocScrutinizer05 | bart416: I mused about making a solder gun using Galden vapor |
| DocScrutinizer05 | maybe revamp one of those shitty water vapor cleaners |
| jaggz | user3209, probably not.. people are sensitive to the odors, and I couldn't then use it in food |
| bart416 | We use Galden HS240 at work |
| user3209 | does industrial NO2 smell different? |
| user3209 | I thought it was just a different purity guarentee |
| bart416 | DocScrutinizer05, the only real issue with Galden is that it's insanely expensivel |
| gottaname | ACTION sits on bart416 |
| gottaname | ne ne bart416 |
| gottaname | have you used induction sensors before? |
| DocScrutinizer05 | bart416: well, I wouldn't want to spil it across the floor and bench, ratzher catch it up in a catch basin |
| user3209 | would using dry ice to exclude air from a tub and then soldering in the bottom of it improve the solder joint quality? |
| bart416 | gottaname, uhm have I used coils, uhm yes :P \ |
| bart416 | user3209, dunno |
| bart416 | Most commercial systems just use N2 |
| bart416 | A bottle of N2 is really really really cheap |
| gottaname | bart416, I bought some omron induction sensors, but they're 2 wires instead of the usual 3 |
| gottaname | blue and brown |
| user3209 | I mean, it's heavier than air so it should force most of the oxygen out of the bottom of the tub |
| bart416 | DO NOT CROSS THEM! |
| bart416 | IT MIGHT END THE UNIVERSE |
| tawr | damnit jaggz |
| bart416 | Oh wait, that's only with prostituton streams |
| tawr | user3209: no |
| jaggz | tawr, heh.. what |
| DocScrutinizer05 | user3209: theoretically yes, practically you need more joints in your arms to solder that way |
| user3209 | depends how deep the tub would have to be to get a good reduction in the oxygen |
| tawr | industrial n2o |
| gottaname | bart416, so... 2 wire induction sensors? |
| tawr | has adulterants in it |
| tawr | so people don't get high off of it |
| tawr | also has some sulfur i believe |
| user3209 | ahh, that makes sense |
| tawr | versus medical grade |
| user3209 | and food grade I imagine |
| DocScrutinizer05 | user3209: s/reduction of oxigen / avoid CO2 getting out of the thing by you making turbulence in it/ |
| user3209 | which would be why food grade is so hard to get |
| tawr | well food grade would be the same as medical user3209 |
| tawr | no reason for it to not be |
| user3209 | we have tanks of medical CO2 and food grade CO2 right next to eachother in our gas room |
| tawr | its just medical grade means after X amount of fills the valve and cylinder is washed out and cleaned, etc |
| user3209 | they're diffent and the medical is more expensive |
| tawr | i use food grade co2 (hint: it's the same) for welding |
| tawr | and as a powertank |
| DocScrutinizer05 | N2O cheap: cream siphon capsules |
| tawr | not cheap at all |
| DocScrutinizer05 | well, "cheap" |
| DocScrutinizer05 | at least nutrition grade |
| tawr | i use 20lb co2 tanks for my welder, and also have a powertank regulator for it |
| tawr | for when i would offroad, go to the dragstrip, etc |
| user3209 | the medical grade stuff is more tightly controlled |
| tawr | throw a 20lb co2 tank in the back of your truck, you have enough air to air up 4 tires 4x for big mudding tires, car tires, probably 15+ sets |
| tawr | plus they're a really nice size |
| DocScrutinizer05 | user3209: more tightly controlled than nutrition? |
| splud | food grade CO2 for beverage dispensing. |
| user3209 | tightly controlled as in quality control |
| splud | Should be readily available. |
| DocScrutinizer05 | sure |
| tawr | https://i.imgur.com/CTZo6iL.jpg <-- one of my tanks + my regulator |
| DocScrutinizer05 | CO2 is a nobrainer |
| tawr | it's nice to be able to run a 1/2" impact at full power in the middle of nowhere |
| tawr | or know you could air up a flat tire 12 times from flat to 30psi, etc |
| jaggz | tawr, order me a small no2 canister |
| jaggz | food grade or higher |
| jaggz | what fittings are used on the no2 thing too? |
| DocScrutinizer05 | NO2 or N2O? |
| tawr | i have a 40cf inert tank i use for my AR/HE mix, or for 100% nitrogen |
| tawr | i believe it has a different valve than n2o |
| jaggz | oh.. n2o :) |
| tawr | and definitely from no2 :) |
| jaggz | local welding place said they all have different fittings |
| tawr | jaggz: yeah but once past the regulator |
| tawr | you can put whatever you want |
| user3209 | medical Nitrosoxide is often premixed with oxygen to prevent accidental asphyxiation so read the tanks carefully |
| tawr | they are all 1/4npt at the reg |
| jaggz | but they either don't have it, or only do medical grade and I'd need a FDA permit or something.. |
| tawr | my first powertank regulator I made, i bought a cheap oxygen regulator, removed the nipple to change it over to co2 tank, removed the welding fitting on output and put a 1/4" air quick connect on it |
| tawr | boom |
| tawr | jaggz: why would fittings be involved with that though? |
| jaggz | tawr, just was looking into what equipment/tubing/etc.. |
| user3209 | are you sure the you don't need an FDA permit for the food grade stuff? They are the *food* and drug administration after all |
| jaggz | needed to be used |
| tawr | if you can handle adulterants in the gas to prevent you from getting high, it's dirt cheap |
| tawr | for like the type used for cars |
| tawr | which i have seen idiots get high off of, btw. |
| tawr | morons, all I can say |
| jaggz | part of the positive of n2o in whipped cream is the slight sweet taste |
| user3209 | people will always get high |
| jaggz | I don't feel like adding sulfur compounds to my whipped cream |
| tawr | oh for that jaggz i'd just use the machine for it |
| tawr | and buy the little capsules |
| user3209 | you literally cannot stop them |
| tawr | i think they're 2 bucks a pop, but they last a long time |
| tawr | i just recently bought a new one |
| jaggz | well, we're going to be heating the fluid too.. and we need to keep the heat separate from the canisters |
| tawr | one thing I do myself is carbonation, though |
| jaggz | also, a lot is wasted with our experimental setup |
| jaggz | so cost becomes an issue |
| tawr | we can take it to pm if you'd like jaggzmeoff *wink* |
| jaggz | well, when you invite me that way how can I resist |
| tawr | u no it bae |
| bart416 | <gottaname> bart416, so... 2 wire induction sensors? <-- No idea :D |
| password4 | soon I'll have food |
| bart416 | It's probably really just a simple coil |
| bart416 | Or its one of those fancy pulsed current thingies |
| user3209 | I love when this chat goes off topic almost as much a when it stays on topic |
| user3209 | ##electronics is best IRC |
| DocScrutinizer05 | indeed, best off-topic chat at least :-) |
| password4 | mash , its like smash without sex |
| user3209 | mashing is a different cooking technique to smashing. Neither of them should involve your genitals /s |
| password4 | well their not much use otherwise |
| user3209 | *thar |
| password4 | seeing as the only people i talk to is you guys |
| jsoft | lol |
| password4 | thar? |
| user3209 | you used "their" where it should have been "they're" |
| jsoft | Who gives a shit |
| password4 | thanx jsoft |
| user3209 | the incorrect correction is humerous because it subverts the expectation that a correction will be correct itself |
| password4 | ok |
| user3209 | or at least that was my intention |
| password4 | you know a joke needs to be funny , atleast you tried |
| user3209 | given that "thar" is a phonetic pronounciation of "their" with an accent |
| jsoft | Fucking hell |
| password4 | wehres the mute button? |
| jsoft | Nevermind the point being expressed, lets pick apart the text exressing it |
| user3209 | well, you axed |
| DocScrutinizer05 | not THAT stzarts to be really funny |
| DocScrutinizer05 | now* that starts* |
| password4 | awe |
| tawr | user3209: we have some incredibly smart, driven, interesting people in here |
| password4 | DocScrutinizer05, i was thinking you did that on purpose |
| tawr | besides me, i mean |
| tawr | :) |
| password4 | he means me |
| password4 | well not driven |
| jsoft | A toast then, tawr, to slackers! |
| user3209 | I try to fool myself into thinking that I'm fooling others into thinking I know what I'm talking about, but it's not working |
| DocScrutinizer05 | rgat's amusingly non-amusing |
| user3209 | I have a shallow understanding of a great breadth of topics, but when people start going into detail I quickly find myself out of my depth |
| jsoft | user3209, so stop arguing and ask questions |
| user3209 | What do you guys think about bio-energy from body heat - will it ever be a practical powersource for any purpose? |
| SpeedEvil | No. |
| password4 | i think i finally understand whats wrong with me |
| SpeedEvil | Unless for heating. |
| password4 | heating your bae? |
| SpeedEvil | Carnot means that unless you have a very, very cold heatsink to work against, you can extract ~0 work from small temp differences. |
| password4 | well |
| SpeedEvil | At 10C, and room temp, you have a best case efficiency of ~3%. |
| password4 | theres that shitty gas based piston , stirling? sterling? |
| password4 | something liek that |
| SpeedEvil | So, 3W, if you enclosed the full human. |
| DocScrutinizer05 | I think there are some working PoC of using body as heat source in energy harvesting |
| user3209 | I thought for a bit about implants that need an extremely small amount of power to operate, but even then it doesn't seem like it would ever be practical |
| jsoft | I think potatoes are versatile |
| SpeedEvil | user3209: it doesn't work even worse in that case. |
| DocScrutinizer05 | ^^^ energy harvesting |
| SpeedEvil | user3209: as there is little internal temperature difference in the body |
| password4 | i want to try and grow my own wheat |
| password4 | but i decided $1 is too much for me to spend now on non essential things |
| password4 | well more like $10 |
| redrabbit | wheat is cheap |
| password4 | i just want to grow it |
| user3209 | the temp difference between next to a blood vessel and very shallow subcutaneous can be a degree or two depending on environmental temp |
| password4 | if you are implying that i should rather buy wheat rather than grrow it , then dont |
| SpeedEvil | user3209: yes, which has a best case efficiency of 0.3 (or 0.6) % |
| redrabbit | well if its for fun why not |
| password4 | fun is overrated |
| SpeedEvil | user3209: and shallow subcutaneous can have a Qi charger stuck to it. |
| redrabbit | idk about production though |
| password4 | its for the rich and the young |
| redrabbit | its hard to compete with what you can buy |
| redrabbit | cost wise |
| password4 | its shit easy |
| password4 | scaling up is the issue |
| user3209 | the only thing it would be practical for is if you could make it last more than a decade, otherwise you may as well implant a primary lithium cell, no matter how small the drawn current is |
| redrabbit | well, try it |
| SpeedEvil | user3209: Or other means - mechanical, glucose fuel cell |
| SpeedEvil | I wish glucose fuel cell was a reliable thing. |
| Fuchikoma | That's called a "person" |
| DocScrutinizer05 | >>Miniature thermocouples have been developed that convert body heat into electricity and generate 40μW at 3V with a 5 degree temperature gradient<< https://en.wikipedia.org/wiki/Energy_harvesting#Thermoelectrics |
| user3209 | read that one |
| kcrow | sugar is good |
| user3209 | 40 micro watts is not a lot, and their device covered almost the entire forearm IIRC |
| password4 | Fuchikoma, or a rat |
| OdinYggd | Are the numbers given in The Matrix accurate for human energy output? |
| SpeedEvil | OdinYggd: thermal energy output is ~100W |
| SpeedEvil | or 200W for fatties |
| password4 | someone fapping produces much more useable energy |
| jsoft | hah :D |
| password4 | than 40uW |
| DocScrutinizer05 | 50W when idling |
| user3209 | I'm wondering about subdermal solar cells - if we only need a tiny amount of power (microwatts) then enough light would probably penetrate a thin layer of skin |
| HighInBC | sounds like a plant |
| HighInBC | you would have to turn gree4n |
| redrabbit | SpeedEvil: id say fatties emmit not much more energy, they store it: |
| OdinYggd | Human powered factories used to be a thing before electricity. They were called work houses, and sheltered the homeless in exchange for physical labor running the mill |
| SpeedEvil | user3209: if you get it that close to the skin, it tends to pop out |
| DocScrutinizer05 | user3209: where to place that? face? hands? |
| HighInBC | and you would need to go naked too |
| SpeedEvil | redrabbit: A heavy person at a static weight has a notably larger basal metabolic rate. |
| OdinYggd | Oliver Twist lived in such a workhouse at the start of the book |
| HighInBC | the surface area to mass ratio would be the important factor |
| HighInBC | round objects have less surface area to volume so assuming equal density... |
| redrabbit | in that case a slim person would be abetter battery |
| HighInBC | OdinYggd: Dickens always starts out great, ends great, but lags in the middle |
| HighInBC | like Great Expectations, good book but I was expecting more |
| HighInBC | ;) |
| Fuchikoma | Problem is about half of the ehat energy a person produces is latent heat |
| user3209 | underneath the fingernails could be an interesting place |
| DocScrutinizer05 | what the heck is latent heat? |
| password4 | its heat that is late to the party |
| Fuchikoma | as opposed to sensible heat |
| user3209 | that way the nail would protect the skin covering the cells from being damaged |
| DocScrutinizer05 | ACTION pierces some chips underneath user3209's fingernails |
| user3209 | probably too complicated for insertion though |
| Fuchikoma | heat that is released as a constant-temperature process |
| redrabbit | gross |
| password4 | not really complicated |
| password4 | just painfull as fuck |
| Fuchikoma | For humans, that means sweating and evaporation in their breath |
| password4 | my big toe bend backwards the other day |
| redrabbit | then 1yr later you can rename to 4fingers |
| user3209 | well, that's part of what makes it complicated |
| user3209 | the fingertips are a very sensitive part of the body |
| DocScrutinizer05 | nail beds more so |
| user3209 | and damage to them is very debilitating |
| redrabbit | body mods |
| redrabbit | ACTION pukes |
| kcrow | ACTION grabs the puke and flies off. . . . |
| password4 | redrabbit, theres one body mod I'd like to try |
| corecode | anybody know how pata 80 terminated the 40 ground conductors? |
| DocScrutinizer05 | crows... eating everything |
| user3209 | bodymods are only stupid because they're pointless - things like implantable pain pumps, neurostimulaters and pacemakers are very pointed |
| password4 | and i would like you to atleast halfway read the guys experience |
| DocScrutinizer05 | kcrow: btw did you teach your fellows to eat squirrels now? |
| password4 | oh wait , he has video of it :D https://www.youtube.com/watch?v=tVVTSXA0HTU |
| electrobot | password4 just linked to Diy Magnetic Implant - YouTube |
| DocScrutinizer05 | corecode: terminated? GND? |
| corecode | yea |
| redrabbit | guess what https://www.aliexpress.com/wholesale?catId=0&initiative_id=SB_20171103090424&SearchText=nfc+nail |
| corecode | how? |
| redrabbit | the nail thing exists |
| redrabbit | its not designed to be put inside your body though |
| user3209 | One of the ideas I have filed under 'interesting' is a cochlear implant, but being fed non-acoustic information. |
| redrabbit | just on top of the nails |
| redrabbit | sounds awkward |
| DocScrutinizer05 | W*T*F!? |
| corecode | https://en.wikipedia.org/wiki/Parallel_ATA#/media/File:PATA-Connectors-exposed.png |
| corecode | aha |
| corecode | some pins are connected to the ground bar |
| user3209 | on top of the nails defeats the purpose, we want it to be subdermal so you have no wires going through the skin, providing a portal for infection |
| DocScrutinizer05 | well, synthetic nails |
| OdinYggd | Under the skin is no good |
| OdinYggd | Thermocouples are heat engines- they operate between a hot reservoir and a cold reservoir |
| user3209 | we moved on to photovoltaics |
| OdinYggd | Subdermal implantation you wouldn't get enough heat out of the body because it would be surrounded by warm flesh |
| redrabbit | so making it a fake nail works better |
| user3209 | enough light penetrates the nailbed to give us a bit of power |
| OdinYggd | Why not just make a photosensitive ink |
| OdinYggd | and tatoo a solar panel on the person's arm |
| user3209 | how would that even work? |
| redrabbit | with cancer |
| Sculptor | i'll have what OdinYggd is having |
| OdinYggd | I have no idea but I'm sure someone is willing to figure it out |
| user3209 | photosensitive ink doesn't produce electricity |
| OdinYggd | It uses light to change the shape of a molecule |
| OdinYggd | So if you do this in a way that electricity is given off instead |
| OdinYggd | you get an ink that has applications for photovoltaics |
| OdinYggd | Create an array of this as a tatoo and you might end up with a skin-embedded PV cell |
| splud | Qi |
| splud | Fuel Cells. |
| DocScrutinizer05 | Sculptor: not without mass spectro to analyze first ;-) |
| heibol | /j hamradio |
| heibol | sorry |
| heibol | :v |
| OdinYggd | splud, a fuel cell that metabolizes glucose? |
| splud | http://www.vttresearch.com/services/ipr-for-licensing/printed-primary-micropower-sources |
| user3209 | it's kinda like my idea to have a spray can which sprays LED nanomachines onto a surface, then they network with eachother to create a TV screen the size and shape you sprayed |
| OdinYggd | Then all those diabetes patients, instead of needing insulin, just charge their phones from their belly |
| user3209 | I don't think it's gonna happen |
| splud | OdinYggd, yes, |
| OdinYggd | win/win cure |
| splud | And would potentially benefit Diabetics. |
| OdinYggd | I swear I am not a genius or anything. |
| OdinYggd | I might be temporarially insane right now |
| OdinYggd | But this is when ideas are born |
| splud | In some cases, it's permanent insanity that takes 'em to market, |
| splud | That link above speaks to enzymatic glucose air batteries. |
| user3209 | http://journals.lww.com/asaiojournal/Citation/1969/04000/ANALYSIS_OF_IN_VIVO_DEOXYGENATION_OF_HUMAN_BLOOD_.50.aspx |
| user3209 | 1969 :) |
| OdinYggd | I was thinking a more integrated system |
| DocScrutinizer05 | apropos PV ink: they explained (tongue in cheek) in TV how to make a PV cell from glass, tooth paste, cranberry(?) juice, and some other usual shit. That might be mildly suitable to apply subcutaneously |
| user3209 | "ANALYSIS OF IN VIVO DEOXYGENATION OF HUMAN BLOOD: A FEASIBILITY STUDY FOR AN IMPLANTABLE BIOLOGICAL FUEL CELL." |
| splud | EBFC = Enzymatic Bio Fuel Cell |
| OdinYggd | An implanted 'organ' that combines glucose and oxygen from the blood stream and produces electricity from doing so |
| OdinYggd | Limit the rate of consumption to maintain healthy glucose and oxygen levels |
| OdinYggd | That way you aren't sending the person into low shock by over-consuming |
| password4 | haha , gold plated scalpel |
| splud | MUST.. PLAY... MOBILE...GAME... |
| redrabbit | seriously |
| user3209 | combine the device with a subcutanious blood glucose monitor and it could theoretically do that - it would have to put the energy somewhere though |
| splud | Cause of death: recharging his mobile device too rapidly via his EBFC... |
| splud | Implanted status LEDs <g> |
| user3209 | Something more modern (2016) https://muep.mau.se/bitstream/handle/2043/21936/Paper.pdf?sequence=2 |
| user3209 | "Ex vivo electric power generation in human blood |
| user3209 | using an enzymatic fuel cell in a vein replica" |
| splud | Wave your arm around and look at your foream to check the status of your EBFC. |
| splud | Implant a few LiPo cells. |
| DocScrutinizer05 | OdinYggd: (diabetes) except insulin isn't a glucose antidot but a sort of "catalyst" for cells to make use of glucose. Eliminating all glucose from blood will kill you pretty instantly |
| redrabbit | ACTION prefers a power pack |
| OdinYggd | Yes it will. |
| OdinYggd | Diabetics have to beware of both high levels and low levels |
| OdinYggd | But this thing could burn off the excess as electricity, while providing early warnings of declining low levels |
| redrabbit | well you could give it to fatties so they can use the energy before its stored into fat |
| splud | Moving on. Microturbines? Fart harvesting (again, fuel cell) |
| user3209 | if you just dump the heat into your blood then you're body will naturally dilate the capilaries in your skin to get rid of it |
| user3209 | (you get flushed, like when your exercise) |
| password4 | fart and quaff |
| user3209 | microturbines do too much damage to blood cells |
| OdinYggd | That isn't always reliable though |
| OdinYggd | Especially on a fat person, in many cases even the slightest physical activity makes them drenched in sweat |
| OdinYggd | and in extreme weather, dangerous overtemperature conditions are possible |
| user3209 | but we could generate energy from peristalsis in your intestines |
| user3209 | you can monitor core temp to ensure that safe levels aren't exceeded |
| user3209 | or you could use my unpatented idea https://docs.google.com/document/d/1rZBm9OzbuZdoHdYY0He0oHQgUbbVyyAPMN56Xqxmc78/edit |
| password4 | or from parastatals |
| user3209 | "The Cooling Gauntlet is a wearable medical device which can automatically apply a continuously variable cooling effect in order to regulate a patient’s core body temperature. The device is worn on the wrist and utilises a partial vacuum to inhibit local vasoconstriction while heat is transferred from the body to an external heat sink via Peltier heat pump. The gauntlet will use sensors to monitor the patient’s core body temperature |
| user3209 | and adjust its output to ensure the core temperature stays within a preset range." |
| user3209 | I've been half-arsed attempting to build this thing fro a couple years now |
| password4 | https://youtu.be/tVVTSXA0HTU?t=23m3s |
| electrobot | password4 just linked to www.youtube.com (Diy Magnetic Implant - YouTube) |
| user3209 | and I'm still not sure it will work |
| password4 | jut watch 1 min |
| user3209 | I've seen someone implant a magnetic implant without anaestetic before |
| password4 | that happens in this video too |
| user3209 | I hope they remembered to encapsulate it first |
| SpeedEvil | Pet implanters are pretty cheap |
| user3209 | or they're gonna have a bad time |
| password4 | 24k gold plate |
| user3209 | ahh, I know the video |
| user3209 | yeah, the plating breaks down, his finger gets infected and he has to remove it a couple months later - full recovery though, no permanent damage |
| password4 | i think this is his 3rd attempt |
| SpeedEvil | I would probably try to seal it in glass. |
| user3209 | Should encapsulate it in PTFE |
| password4 | gold is not a bad choice |
| SpeedEvil | Find a suitably shaped Nd magnet, a glass capillary, make test tube end, insert magnet, seal other end. |
| user3209 | gold is a decent choice, so long as you can get a good, consistent coating |
| SpeedEvil | anneal, and then remagnetise |
| password4 | user3209, he did a few attempts , first few flaked off |
| SpeedEvil | Or make an actual macroscopic gold tube. |
| user3209 | this is Cody, right? |
| password4 | then he switched to a acid solution to clean the magnet before hand |
| password4 | yes |
| user3209 | yeah, I'm familiar |
| user3209 | PTFE is bio-inert so long as you sterilize it before implantation |
| jaggz | https://io9.gizmodo.com/5347328/nitrous-oxide-is-destroying-the-earth |
| electrobot | jaggz just linked to www.gizmodo.com.au (Gizmodo Australia | the Gadget Guide | Technology and consumer electronics news and reviews) |
| user3209 | I suspect a gold plating would eventually wear down just mechanically, even if it doesn't react. |
| password4 | -____- |
| password4 | and then? |
| user3209 | and then the magnet will poison you |
| password4 | no it wont |
| password4 | you love talking out your ass |
| user3209 | that I do |
| password4 | the magnet is coated in nickel , which he does note he is not allergic to |
| password4 | the first magnet he tried was just plain neodymium |
| password4 | then some other attempt which lasted like 4 days |
| jaggz | cody tells me he ended up finding he had a small piece still stuck in his finger |
| dTal | major squick |
| jaggz | he told me personally, by way of a youtube video |
| user3209 | so in other words, neodymium is toxic and this magnet has a nickel coating in addition to the gold plating |
| Fuchikoma | He should get an MRI just so see if they got it all |
| user3209 | how does that invalidate my hypothesis? |
| password4 | jaggz, which finger? |
| password4 | Fuchikoma, didhe not use his 1T magnet to test? |
| jaggz | password4, the only one he has left? |
| password4 | lol |
| user3209 | I haven't been able to find much on pure nickel implants, only about steel titanium alloys which contain small amounts of nickel occasionally causing problems. |
| user3209 | industrial exposure to nickel can cause Nickel toxicity |
| Fuchikoma | Why is implanting mgnets a thing? |
| password4 | Fuchikoma, its like having a six sense |
| Fuchikoma | Fuck that |
| password4 | being able to tell if a wire is live without touching it |
| user3209 | the question is how reactive pure nickel will be (this could be a situation like elemental mercury where it isn't readily metabolised) |
| DocScrutinizer05 | you don't want Ni in your body (unsealed) for sure |
| Fuchikoma | Yeah I do't really believe it would be that sensitive |
| password4 | he even mentions hes been able to detect sub terranian cables by walking over the street |
| TheTrash | "There's a heavy magnet in this device" "How can you tell?" "My hand is stuck" |
| Fuchikoma | But the downsides would be annoying as fuck |
| user3209 | if a significant amount of the nickel disolves into your blood you will become very ill |
| Fuchikoma | it's hard enough cleaning metal swarf off of my clothes |
| tawr | oh |
| TheTrash | Airport security triggered _every_ _time_ |
| tawr | i've wanted one of those for a long time |
| tawr | it's usually a N52 magnet in silicone |
| user3209 | you can feel the shape of magnetic fields |
| tawr | or a glass capsule |
| tawr | i almost got one a couple of years ago |
| user3209 | it's a tactile sense of magnetism |
| tawr | but then i saw that everyone who has one has the softest, daintiest hands i've ever seen on a man before |
| Fuchikoma | Some people claim to be able to sense underground water with a pair of sticks, too. |
| tawr | and one guy popped his capsule moving his kitchen table |
| tawr | Fuchikoma: uh, except this is science |
| Nach0z | ytf was I scrolled up so far |
| tawr | so that's why i never got one |
| password4 | tawr, you want one too? |
| Fuchikoma | So is dowsing depending on who you talk to |
| tawr | because i'd pop it in like a day as delicate as they are |
| tawr | Fuchikoma: dont be dumb |
| user3209 | I tried supergluing a magnet to my finger, but it's not sensitive enough when you just have it on your skin externally |
| tawr | obviously a magnet in your skin on the most sensitive part of your body will be able to feel forces acting on it. |
| bart416 | Nickel for implants was only used for alloying I thought? |
| tawr | because it's a magnet. unless you want to deny magnetic attraction lol |
| tawr | bart416: i think he's confused |
| DoYouKno1 | I made a small rap: https://soundcloud.com/michael-sabino-3/energyrap |
| user3209 | a magnet inside your skin is more sensitive than a magnet on the surface of your skin |
| Fuchikoma | The question is if those forces are going to be enough to feel things like cables under a roadway |
| tawr | neo magnets do have nickle. and they are usually nickel coated |
| OdinYggd | Goddamnit you guys |
| SpeedEvil | Fuchikoma: no |
| OdinYggd | >Gluing magnets to the most sensitive part of your body |
| SpeedEvil | Fuchikoma: unless it is a very unusual cable |
| tawr | because neo magnets are a ceramic |
| user3209 | the epidermis doesn't contain any of the touch receptors |
| Fuchikoma | SpeedEvil: Exactly my point |
| tawr | OdinYggd: no, sliding it under your skin |
| SpeedEvil | tawr: no they're not. |
| OdinYggd | Why did I immeadiately think of some contraption to help couples that are having difficulty with reproduction |
| SpeedEvil | tawr: they're a metal alloy. |
| tawr | SpeedEvil: wut |
| OdinYggd | Using the magnetism to guide the parts into alignment |
| tawr | they are a cermet |
| tawr | what are you talking about! |
| tawr | ACTION pokes SpeedEvil |
| mitmf | i can buy food with bit coin? |
| bart416 | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4479460/ |
| user3209 | AFAIK no-one has implanted a magnet in their dick, although now that I think about it, it wouldn't surprise me. |
| OdinYggd | Yes you can mitmf. I do not recommend it because you don't necessarially know where it came from or what quality it is |
| OdinYggd | And if it arrives rotten, you cannot get a refund |
| SpeedEvil | tawr: If it's got less boron in it than carbon steel has carbon, I'm calling it a metal |
| user3209 | The reason he plated it in gold is to avoid exposure to the nickel |
| tawr | they are sintered ceramics with metal in it :P |
| kcrow | getting a magnetic dick pinched would suxor |
| user3209 | otherwise he wouldn't have bothered |
| tawr | user3209: oh dude |
| bart416 | <user3209> AFAIK no-one has implanted a magnet in their dick, although now that I think about it, it wouldn't surprise me. <-- uhm people have... |
| tawr | i have some 1/4" gold plated n52 spheres |
| tawr | give me a minute, i have an idea |
| tawr | if i'm not back in 10 minutes... |
| Fuchikoma | We'll wait longer |
| tawr | call Nach0z and tell him to bring one of those magnetic pickup tools and some pliers |
| mitmf | OdinYggd: i can get it from min? |
| Nach0z | ? |
| mitmf | bit coin min? |
| Nach0z | tawr, when I said "vibrating magnetic piercings" my target audience was for women, really |
| SpeedEvil | tawr: My understanding is most magnets are sintered today, not bonded |
| password4 | ACTION search for vibrators |
| tawr | SpeedEvil: probably. but i'm like 90% sure neo magnets are ceramic metals that are sintered, then nickel coated to prevent oxidation / chipping |
| SpeedEvil | tawr: NdFeB (which the boron is not dominant) particles are made, and then either hot-pressed in a polymer binder, or sintered. The sintered ones have ~0 other elements left. |
| SpeedEvil | They are not ceramic. |
| synx508 | That sinteresting. |
| mitmf | i can get it from bit coin mine? OdinYggd ? |
| bart416 | synx508 wins this week's pun-award I think |
| SpeedEvil | http://www.magneticsmagazine.com/main/articles/bonded-magnets-a-versatile-class-of-permanent-magnets/ supports my view |
| Fuchikoma | https://www.youtube.com/watch?v=BHuWloNGo6c |
| electrobot | Fuchikoma just linked to How SuperMagnets are made - YouTube |
| SpeedEvil | "his means that while bonded NdFeB magnets are in third place behind sintered NdFeB and hard ferrite magnets |
| Fuchikoma | Linked mostly because the amateur video production is facinating |
| OdinYggd | mitmf, you cannot mine bitcoin. It is not possible anymore without specialist equipment. |
| OdinYggd | There are other cryptocurrencies that can be mined using high end GPUs though, and these coins exchanged for bitcoin |
| user3209 | could we put a coil of gold wire in the finger and power it up into an electromagnet with a subdermal circuit powered by induction charger |
| can | hello, how can i get a sigmoid function on a mcu? i am using a tm4c123. |
| password4 | the other option is to fabricobbbleaglove with these and a few halleffect sensors : https://www.aliexpress.com/item/5Pcs-DC-1-5V-3V-10mm-x-2-7mm-Brushless-Micro-Vibration-Motor-for-Cellphone/32636928870.html |
| user3209 | then you could turn your magnet sense on and off |
| user3209 | sudden idea, a coil would produce electricity (a tiny amount) when moving in a magnetic field. If the coil was close enough to a nerve then you would be able to feel magnetic flux. Unfortunately it would probably be interpreted as pain... |
| user3209 | so theoretically just a coil of gold wire in the right spot would be the entire implant. |
| jan64 | if your body interprets touching things as pain, you might have a problem |
| user3209 | electrical signals conducted directly into a nerve are not the same as touching things |
| user3209 | the coil probably wouldn't move enough to generate a sense of touch, but nerves are extremely sensitive |
| Fuchikoma | Or just use a handheld sensor |
| user3209 | it's just not the same *sigh* |
| user3209 | imagine you're looking at a spectrogram instead of listening to a sound |
| user3209 | I mean sure, you can tell a lot about the sound, but you can't feel it |
| password4 | Fuchikoma, thats what I'm thinking but something compact enough that you can slip over a finger |
| password4 | like these thing https://www.aliexpress.com/store/product/5Pcs-DC2-3V-1500RPM-4mm-Dia-Coreless-Vibrating-Motor-for-Mobile-Phone/817555_32637931060.html?spm=2114.12010615.0.0.13d09d58kgQRmq |
| user3209 | the prostate is very sensitive, maybe you should have it vibrate there when it detects a magnetic field, scaling with flux density. There's no need to keep the inside of the rectum sterile so the infection risk is reduced to almost nothing compared to subdermal implants |
| ^7heo | wat? |
| user3209 | /s |
| ^7heo | what are you talking about guys? |
| user3209 | subdermal magnetic implants for magnetic field sense |
| durrf | aka how to make sure you never get an mri ever |
| user3209 | or more recently gloves/thimbles which try to convey a similar sense without home surgery |
| user3209 | using magnet sensors and vibration motors |
| user3209 | that's the context of my post |
| garylabronz | what do the recieve numbers mean here? https://www.pjrc.com/teensy/td_uart.html is that the number of bits it can receive? |
| garylabronz | same with transmit |
| bobo1on1 | I think they are pin numbers |
| user3209 | really? My pin is 3601 |
| bobo1on1 | whats' your credit card number? |
| password4 | man |
| user3209 | lol |
| password4 | i dont like my country all that much anymore |
| user3209 | I'm too tired for intelligent conversation, but I can still shitpost for hours |
| user3209 | I should go to bed |
| password4 | i almsot get to go to bed |
| password4 | i cant even play mc anymore |
| corecode | what do they use to route usb 2.0 from pin headers to case? is that some TP cable? |
| password4 | i guess? |
| garylabronz | i think they are the pins :mindblown: |
| corecode | i wonder where to get cables |
| nooodlesnodes | How safe it it to have a 30 breaker, breaker box 240v behind your head in your office? |
| tawr | did your card just beep? |
| nooodlesnodes | 12" away or less |
| tawr | your card has a beeper for emergency, it's by the preforations |
| tawr | look just show me the card i'll show you where the beeper is |
| password4 | ACTION beebs tawr |
| user3209 | perfectly safe |
| user3209 | I'm assuming it has a cover? |
| garylabronz | safe af |
| nooodlesnodes | says online that its hazardous, emits too much |
| nooodlesnodes | Yes it has a cover, Im not talking shock |
| SpeedEvil | Put some healing crystals on the breaker box. |
| DoYouKno1 | when is the next HAARP campaign going to start? |
| mitmf | DoYouKno1: hello |
| DoYouKno1 | hi goIIum |
| mitmf | :) |
| mitmf | DoYouKno1: you got item now? |
| DoYouKno1 | not yet, there are still a few more days for hackrf to arrive |
| DoYouKno1 | it says shipped |
| mitmf | oh |
| mitmf | pm possible? |
| tomeaton17 | Who plays TIS-100 here |
| Fuchikoma | I have it but never got around to installing |
| tomeaton17 | Its really fun I would recommend it |
| sigtau | idiot-grade question for you all, how exactly is the "grounded" LED indicator of modern surge protectors wired up? |
| sigtau | is it just an LED, a high-value resistor, shunting mains to ground? because that seems dangerous |
| sigtau | I don't have one here to open up and look at |
| kludge | sigtau: it's a neon lamp usually, not an LED. |
| zigggggy | hey kludge!!!! |
| zigggggy | what are your plans for the weekend!!! |
| kludge | neon lamp comes on at 55V or so, pulls nearly zero current. |
| kludge | zigggggy: I am going to an audio show full of crazy stuff up in DC! |
| Fuchikoma | On an actual surge protector or one of those "surge protecting" power strips? |
| sigtau | kludge: I've seen it done with LEDs though, such as on those cyberpower surge suppressors |
| zigggggy | kludge but you were JUST at an audio show in nyc! |
| sigtau | like an actual surge suppressor with UL and CE stickers and all that |
| zigggggy | kludge are you taking the train? |
| Gallomimia | sigtau: i've often wondered a great many things about such surge protectors. if you're interested, i propose we find out together. google and such |
| kludge | zigggggy: that was a real audio show, this is mostly crazy crap. I am driving! |
| zigggggy | kludge how was it flying into nyc? |
| sigtau | Gallomimia: I actually have been looking around and I've found more info on why the LED is on/off vs. what makes it work |
| zigggggy | kludge did you have a direct flight? |
| sigtau | which isn't particularly helpful but good to know |
| Fuchikoma | https://images.crutchfieldonline.com/ImageBank/v20140925150700/ImageHandler/scale/978/978/core/learn/article/3570/openvgeneric2.jpg |
| Gallomimia | oh that could be a problem for an electrician |
| kludge | zigggggy: It was okay, it was pretty fast. Took less time than the train and we had a direct flight but had to drive an hour to richmond to get to it instead of walking down to the train station. |
| sigtau | aside: I destroyed my bench supply becuase I'm an idiot and confused my scope probes for my supply probes when testing if my plug wiring was correct. |
| Gallomimia | i run channels for info about that, but with no one in them, they don't get a lot of use |
| zigggggy | kludge which airport did you fly into? |
| sigtau | moral: buy an AC transformer, label your damn probes. |
| Fuchikoma | In the case on the left, the light is just a neon lamp inside the switch and doesn't mean much |
| kludge | zigggggy: Newark! |
| Gallomimia | oops. |
| kludge | sigtau: so, take it apart and see what failed. Not much in there you should not be able to fix. |
| Gallomimia | or how about don't make them anywhere close to the same size and shape |
| Gallomimia | scopes are for testing and supplies are for supplying |
| sigtau | yeah I specifically ordered different colored probes to prevent that from happening in the future |
| Fuchikoma | But then they wouldn't stack nicely |
| zigggggy | kludge and you took a train from newark? |
| kludge | paint with nail polish. |
| Gallomimia | they should never be stacked! |
| zigggggy | kludge or rented a car? |
| Fuchikoma | Stack all the things! |
| kludge | zigggggy: Took a train, there is no way I will ever drive in NYC. |
| Gallomimia | don't put supply probes and scope probes anywhere close to each other |
| zigggggy | poor kludgey |
| sigtau | also mine was a cheapie chinese $30 one that I had to check for isolation between mains and ground because of course I did |
| zigggggy | kludge i thought you drove when you went up to NE for some convention |
| Gallomimia | treat them like they're different phases of different voltages in a wiring conduit. |
| zigggggy | kludge how long is the flight from richmond to newark? |
| sigtau | so honestly, depending on what blew up, it might just be better for me to buy a whole new one and salvage the encoders/7-segments/transformers/other typically expensive parts from inside |
| Gallomimia | uh, where are you sigtau? |
| sigtau | i'm in minnesota |
| Gallomimia | hm |
| Gallomimia | ground and mains aren't isolated. they're bonded in your panel |
| kludge | zigggggy: Less time than it took to drive to richmond. Less time than it took to get through security and wait for the flight. |
| sigtau | oh, no, I meant on the device |
| zigggggy | kludge wow there was a long line for tsa? |
| sigtau | I probed the live input to ensure there was only continuity to the neutral |
| sigtau | not t oground |
| zigggggy | kludge well at least flying is more relaxing.. you can read! |
| Gallomimia | sure but if its connected, you'll find the bond between neutral and ground |
| sigtau | in this case it was not plugged in |
| zigggggy | kludge and you can be in nyc in time for lunch!@ |
| kludge | zigggggy: there always is, in spite of the precheck. And I had to get a hand-inspect for film. But we did make it to the javits in time for the 10:30 panel, which is bad since I got pressed into being a panelist with no warning. |
| sigtau | another aside, building a power supply for a commodore 64, and it's really amusing how cheap it is to just buy transformer/regulator circuits in the form of brand-name wall warts and tear them down instead of just building one |
| zigggggy | kludge do they use a small plane for this flight? like a propjet? |
| sigtau | it feels so hacky, but hey, $$ |
| Gallomimia | well i guess if you blew up something worth 30 bucks, it becomes a decision between fixing it for practice or buying a new one and salvaging the old |
| kludge | zigggggy: We got a CRJ, which is a pretty big airplane. |
| zigggggy | oh |
| zigggggy | it was full? |
| kludge | sigtau: You'll notice those brand-name wall-warts don't regulate as well as buying nice transformers from triad or signal... |
| zigggggy | its probably actually a pretty popular route kludge |
| kludge | zigggggy: of course. Have you been on any flights that weren't full in the past decade? |
| kludge | zigggggy: I hate airlines. I love flying but I hate airlines. |
| zigggggy | its too far to drive and too far to take the train |
| zigggggy | dc to nyc is a little bit better for driving/bus/train |
| zigggggy | but richmond is like 3 hours too far |
| sigtau | kludge: they seem okay with the ideal dummy load (5W resistors, etc.) and this way I can at least put a fuse holder and protection circuitry on the 9VAC line which is most likely to fail in those things |
| kludge | I'd have taken the train if we had a couple extra days to spend. Which would have been nice because I would like to have hung out with people more. |
| sigtau | you're right, though, nothing beats knowing exactly what goes in there |
| zigggggy | kludge yeah airlines stink.. but i cant sit on a train for 14 hours |
| kludge | sigtau: yeah, you could do worse. |
| zigggggy | kludge i rather fly and be there in time for lunch :) |
| kludge | zigggggy: When they have the train to Paris I will be the first one on it. |
| sigtau | and at least it's not chinesium-grade cheapness of transformer -> four crappy diodes that probably aren't correctly rated -> capacitor -> linear regulator of dubious origin |
| jsoft | wtf |
| jsoft | its 8 in the morning |
| zigggggy | kludge they have boats! |
| zigggggy | you can travel like old times! |
| jsoft | it was like 10 pm just a few minutes ago |
| kludge | sigtau: there are plenty of those too. The problem with the C64 is the two different windings. |
| zigggggy | kludge and hope you dont catch a deadly disease on the way |
| kludge | zigggggy: Someday I will take the Matson cargo ship to Hawaii! |
| zigggggy | but you're not cargo, kludge! |
| kludge | zigggggy: I would live to ride on a container ship! |
| sigtau | kludge: I wouldn't know because they potted the thing so damn tightly |
| kludge | sigtau: I chipped one apart for my wife... it was interesting and the transformer was pretty undersized too. |
| zigggggy | kludge you registered for pre-check? |
| jsoft | kludge, what do you think about wifes? |
| kludge | zigggggy: Yes, it is definitely a good thing. |
| zigggggy | kludge what about mrs kludge? |
| kludge | jsoft: I like her! |
| jsoft | Do you reccomend one? |
| zigggggy | kludge how painful was it to do the pre-check? did you have to be interviewed? |
| sigtau | kludge: what did you use to chip at it? I ended up just dumping mine in a low-grade circuitboard recycling receptacle around here |
| kludge | zigggggy: She is not only on pre-check but on the international check thing. Her employers paid for it for everyone. |
| jsoft | Hmm |
| zigggggy | kludge did they take your fingerprints? |
| kludge | zigggggy: I had to be interviewed but it was not much of an interview. They just made sure I was a real person pretty much. |
| kludge | And they took my fingerprints, yes. |
| bobo1on1 | breathing, check. pulse, check. actual person? probably :) |
| zigggggy | kludge now they have your fingerprints in a database! |
| SpeedEvil | Easy way to fix that. |
| SpeedEvil | Can't have no fingerprint matches if you don't have any fingers. |
| kludge | jsoft: I had no intention of getting married.. and we were both pretty old at the time anyway.... but we started dating and then she lost her insurance after about six year so why not get married? |
| zigggggy | kludge i heard the international check thing has a more intense interview |
| zigggggy | kludge it says for precheck you need ID + birth certificate |
| zigggggy | i dont have my birth certificate! |
| kludge | zigggggy: Oh, the government has my fingerprints in lots of databases. And my wife's ex had a clearance to be alone with the president so he could work the white house screening room. So we have all been fingerprinted lots. |
| cheater | hi |
| zigggggy | well maybe i do.. ill have to check my file cabinet |
| kludge | I think I took my passport in instead of the birth certificate. |
| zigggggy | piglit!!!!!!!! |
| zigggggy | ACTION hugs piglit |
| cheater | kludge / anyone, can i take a 100W HID bulb and run it on a 150W electronic ballast? what about on a 75W electronic ballast? |
| jsoft | kludge, I dunno. I am pretty weary of the time and bullshit that comes with women |
| kludge | cheater: I don't know and I also don't know if you can run high frequency HMI bulbs on a regular HID ballast or vice-versa. |
| kludge | jsoft: You can marry a guy then. It's legal now! |
| cheater | kludge: i don't know what a high freq HMI bulb is but the electronic ballasts i use state the freq. |
| jsoft | kludge, lol |
| cheater | kludge: hey btw, i was gonna tell you, the HIDs i use (osram HCI) now go up to 400W! |
| kludge | cheater: I am still looking for a 120V ballast for those powerball things. |
| cheater | kludge: you can use a philips one. |
| kludge | cheater: which philips line? |
| zigggggy | kludge it seems that a birth certificate is required in addition to photo id |
| zigggggy | even if it is a passport |
| cheater | kludge: anything that'll work with their CDM line. Philips CDM is like Osram HCI, but the color spectrum is more jagged. |
| cheater | eg i think this here should work http://www.lighting.philips.at/prof/betriebsgeraete/entladungslampen/vorschaltgeraete-fuer-entladungslampen/mk4-vorschaltgeraete-fuer-son-cdo-cdm-hpi/913700277826_EU/product |
| zigggggy | kludge oh nvm.. passport is enough |
| cheater | kludge: i found out recently philips makes a light that's 1000W and has a really really nice color spectrum. for architectural lighting. let me find it. |
| kludge | I only need 15,000 lumens, really. Any more than 30,000 would be problematic. |
| synx508 | all those lumens, or lupeople as we should probably call them |
| cheater | kludge: http://www.lighting.philips.com/main/prof/conventional-lamps-and-tubes/special-lamps/entertainment/architainment/architectural-msa/928099405103_EU/product |
| cheater | kludge: bear in mind, 15000 lm from a light that has a sparse spectrum is different to 15000 lm from a light with a rich spectrum like the above. |
| cheater | but this one has 250000lm, that's probably too much |
| kludge | cheater: The current marc-300 lamp is 15,000 lumens and the mirror assembly is probably a little lossier than a modern design too. I would be okay being a stop brighter than the marc-300 but not two stops brighter. |
| cheater | kludge: does arc size and stuff like that matter for you? |
| kludge | Depends. Existing arc is about 4mm.... different arc size and I'd have to change the mirror position or design. |
| _abc_ | Hi. kcrow how are your squirrels? Still enjoying your tasty cables in the attic? The winged squirrels down under are joining the war on mnwirekind https://www.theregister.co.uk/2017/11/03/birds_are_pecking_apart_australian_national_broadband_network/ |
| drazak | kludge: did you catch that airplane landing video I linked you last week? |
| kludge | drazak: Yes! Don't send me these things when I am flying! |
| _abc_ | kludge: you have a cockatoo like bird, no? See link above :) |
| cheater | kludge: do you have a spectrum graph for the marc-300? |
| drazak | kludge: haha that was an insane landing, I think the pilot handled it well though |
| _abc_ | You'll buy armored cables before too long. |
| drazak | would certainly be scary to be on the plane and be going all different ways |
| kludge | cheater: I do not, but it's kind of ragged and has a spike in the green when it's new and a spike in the blue when it's run for 20 hours. |
| kludge | cheater: it's not as good a spectrum as kurzbogenlamp. |
| cheater | kludge: ok so typical sparse sodium spectrum |
| cheater | with few noble gases added? |
| _abc_ | A few? Xe should be enough. CO2 is enough by itself. S does it alone too. |
| cheater | kludge: ok well that is really annoying to look at at high lm. but a dense spectrum light isn't. you should try a lamp that's like 100k lm and see where that gets you - i'm sure the issues will be different than a sparse spectrum - and you might find that you can run the film much brighter without seeing flicker, or being uncomfortable to look at |
| kludge | cheater: likely some rare earth stuff in there, but it's not super wonderful. |
| _abc_ | It's more a question of pressure control imo. Also you do not want too many things in the mix, probably. They start interacting. |
| cheater | _abc_: no, the osram HCI lights use many many gases to achieve a really good spectrum |
| _abc_ | Can anyone but for a scientist with a spectrum analyzer tell the color is 0.03% different on THAT red? |
| kludge | "short-arc indium halide" |
| _abc_ | comments from my link above lol "To cook a parrot, drop a rock and parrot into a pot of water. Boil until rock is soft, eat it and throw bird away." |
| _abc_ | Isn't In very easily fused? And vaporized at low temps? |
| cheater | kludge: think about it this way. you're not uncomfortable when outside during noon. that's 100k lux. that means one 100k lumen light bulb per square meter of ground. |
| cheater | kludge: if you had this light intensity from your marc 300 lamps, you'd be very uncomfortable though |
| cheater | if you could still see at all |
| kludge | Perhaps but I'd also rather not pay for light I don't need too. |
| kludge | And the Philips don't seem to have readily available 120V ballasts either... |
| _abc_ | Wasn't microwave H mode excited S lamp going to be the lamp that replaces all lamps? |
| cheater | kludge: a 150W HID costs 6 euro per month to run. |
| cheater | kludge: i calculated that recently. |
| cheater | and electricity is expensive here. |
| tgeeky | if anything beats LEDs from here on out, I'll eat my shoes |
| garylabronz | damn need would be about 0.0001 euro in the USA |
| kludge | _abc_: they do use them for cine work occasionally! |
| _abc_ | cheater: depends in which country. Germany and Holland's electricity prices are 2x to 3x that of other EU countrie's |
| _abc_ | kludge: really? |
| _abc_ | kludge: cine work being shooting or projecting? |
| kludge | shooting. |
| _abc_ | I saw $1000 or so for a 1kW? S lamp |
| tgeeky | neither, they are used in Harvey Winstein's sex dungeon |
| garylabronz | what power laser would i need to cut 4mm plywood? i want to build the dirties and cheapest laser cutter i ccan |
| _abc_ | Just lamp and psu. I wonder what hours rating they have. |
| _abc_ | Should be quite long since there are no electrodes and the lamp rotates all the time. |
| _abc_ | I.e. no hot spot formation |
| cheater | kludge: i just calculated it. a 1000W HID would cost 0.05 euro per hour to run at my electricity rates. |
| kludge | cheater: http://aem.asm.org/content/23/5/972.full.pdf |
| DocScrutinizer05 | ((readily available 120V ballasts)) get a transformer |
| kludge | DocScrutinizer05: I'm trying to keep weight down although it's true the power isn't crazy high here. |
| cheater | kludge: ok that's 1. a terrible spectrum 2. it's likely just a few spikes, not the "full" envelope they display on the graph there. (not surprised, statistics methodology was pretty bad back then) |
| _abc_ | https://www.theregister.co.uk/2017/11/03/on_call/ fun about evil monkeys |
| cheater | DocScrutinizer05: it's more about buying than about adapting. he can't get 'em cheap enough. |
| _abc_ | I'd personally search for missing usb sticks inside Labradors nearby. |
| _abc_ | https://www.theregister.co.uk/2017/11/02/ibm_vs_sco_revives/ lol zombies never really re-die. They just take naps between charges. |
| cheater | kludge: if you want i can send you a 230V ballast. a 150W one is ~34 euro, and it's small, so i can put it in an envelope. a bit bigger than a pack of cigarettes: https://i.ebayimg.com/images/g/hRYAAOxydUJTNT4X/s-l300.jpg |
| tgeeky | WHAT THE FUCK IS ONE TALKING ABOUT |
| kludge | cheater: yes. Spectrum varies dramatically with age too. |
| kludge | cheater: Not yet but that might not be a bad plan if I don't find any 120V stuff. |
| cheater | kludge: well try the philips ones. but the osram ones are super cheap for what they provide. |
| python476 | I just took samples of the glue that helds parts of my abandonned vacuum cleaner |
| python476 | and put it under the iron solder at various temps |
| tgeeky | how did they taste |
| python476 | shit doesn't melt even at 350°C |
| kludge | python476: it's rtv then. |
| python476 | smells bad but nothing happens really |
| python476 | all other glues melt below ? |
| kludge | maybe not all of them but contact cement sure does. |
| kludge | and epoxy is brittle and easily identified by feel. |
| python476 | it looks like something Id call silicon glue |
| python476 | it's shiny and "creamy" |
| kludge | rtv = silicone goo. |
| tgeeky | that's not glue buddy |
| kludge | And on THAT note, I am going to the hardware store to look at foam. |
| python476 | yeah, hence my comme.. ha ? |
| python476 | well silicon adherent binder -_ |
| cheater | _abc_: do you think metal halide lamps need to be matched to ballast or can ballast be stronger? |
| Gallomimia | as long as the ballast is the right type, and has enough power, it should be fine |
| JFK911 | cheater: match |
| JFK911 | all the lamps have a specified ballast it looks like |
| tgeeky | if selastic/RTV takes 350C to melt, wouldn't thta mean it's not applied with a hot glue gun? |
| tgeeky | or not a normal one, at least |
| _abc_ | cheater: matched. HIDs run on current not voltage. |
| Gallomimia | you don't think a hot glue gun could reach 350C? |
| tgeeky | it seems like it might not, given the small rinky hot glue guns i use |
| tgeeky | never measured it tho |
| SpeedEvil | tgeeky: it is not a polymer |
| _abc_ | Gallomimia: the hot glue is made of waxes and polyethylene which will eventually catch on fire. So no, that is not a good idea. |
| SpeedEvil | tgeeky: thermoplastic |
| SpeedEvil | tgeeky: It is applied as a gel, and sets to a polymer which does not melt |
| _abc_ | Typical 'good flow' hot gun glue temps are around 180-200 degC |
| tgeeky | SpeedEvil: ah, ok |
| tgeeky | SpeedEvil: is hot glue the same, or does it remelt easily? |
| _abc_ | It will melt solder if the thermostat is turned on high on the gun. |
| python476 | anyway, I guess I need to pry that glue off with a micro drill |
| Gallomimia | i think i've seen glue guns with thermo knobs. could be used to apply that selastic whatever |
| tgeeky | python476: always try isopropyl first |
| _abc_ | Gallomimia: yes but not 350 degC |
| tgeeky | python476: sometimes for a lot of glues it just slides right off at the contact surface |
| Gallomimia | well i didn't examine the thing closely enough |
| python476 | tgeeky: Im worrid it would attack the plastic case |
| tgeeky | python476: test that first in inconspicious area |
| SpeedEvil | There is also 'warm melt' glue, which works considerably cooler |
| python476 | I tried to pour a drop on a corner |
| python476 | oops no that was acetone |
| python476 | not IPA |
| python476 | gotta find a new area to play with |
| tgeeky | acetone fucks up many kinds (but not all) plastics |
| cheater | _abc_: gotcha |
| python476 | yeah Ive read that |
| python476 | couldn't find a marking on that case to check but anyway Ill give IPA a go |
| python476 | I learned in the process that you could make plastic binder out of ABS to join well ... ABS |
| python476 | I have a tail light to reassemble |
| _abc_ | python476: that also works with polystyrene but you can get ABS glue sticks for glue gun |
| python476 | interesting |
| _abc_ | python476: changed out fried leds? I have a friend who is into auto lights repair, it's absolutely horrible how they are designed inside. Made to fail (quickly). |
| JFK911 | ABS is best welded isnt it |
| python476 | I liked the idea of turning the old tail light broken plastic into it's own prosthesis :) |
| durrf | i see a lot of broken tail light plastic and i keep trying to think of a use for it |
| durrf | but i need to stop collecting garbage |
| durrf | lol |
| _abc_ | 100s of contacs, useless 4 layer tiny boards holding a few leds and resistors, smd leds driven to the limit of orange glowing bonding wires. Mess. |
| python476 | _abc_: nope, driver (yours truly) hitting a post backwards |
| _abc_ | JFK911: ultrasonic welding ABS is one thing that is done |
| _abc_ | python476: okay |
| python476 | the lights survived, the plastic did not |
| tgeeky | python476: THE BACK FELL OFF |
| JFK911 | I have a 'plastic welder' hot air nozzle that i've used on HDPE |
| kcrow | _abc_: neighbors moved in with two dachshunds, they seem to discourage the local squirrel gang members but at least two of them are still tearing up the attic |
| tgeeky | https://www.youtube.com/watch?v=3m5qxZm_JqM |
| electrobot | tgeeky just linked to Clarke and Dawe - The Front Fell Off - YouTube |
| tgeeky | ^ one of the best videos ever |
| python476 | its a 98 car, don't say LED too loud, you're gonna make it cry |
| _abc_ | python476: Some countrie's cops are especially wicked on people with cracked/reglued lights. |
| _abc_ | python476: I hope your area is not. |
| JFK911 | Yeah. My supplier has plastic weld material for ABS, PE, PVC, PC, PP and more |
| python476 | _abc_: cracked I can understand, reglued.. I won't use it unless the thing is beautiful |
| JFK911 | python476: what make car |
| _abc_ | kcrow: borrow a sausage dog, bribe with sausages in attic, keep him there for a day or two. |
| python476 | maker ? |
| JFK911 | is it a ford... |
| python476 | i'm in France, so far cops are pretty "sweet" |
| _abc_ | kcrow: sausage dogs are actually burrow hunting dogs. They will chase little pests |
| JFK911 | Ah probably you can get a copied taillamp from estonia or something |
| python476 | Renault Clio (the one with the ex dead ECU) |
| JFK911 | i bought parts like this from ebay before |
| python476 | we found a good used one in a landfill already |
| JFK911 | otherwise, i'd look in junkyards - taillamps aren't commonly broken |
| JFK911 | yes |
| python476 | I'd love to have a car landfill/junkyard |
| python476 | so many parts |
| JFK911 | Yeah I will just visit other guys' junkyards |
| JFK911 | that way I dont have to be a caretaker for a junkyard |
| python476 | its just that I can't throw out something that just have a broken case |
| python476 | but then you have to pay |
| python476 | or at least negotiate |
| tgeeky | "There's a minimum crew requirement." "Oh? What is it?" "Well, one I suppose." |
| JFK911 | $1 to go in, here |
| mykeylynx | hello how do you test a breaker with a multi meter |
| JFK911 | Hours of amusement are worth a $1 to me |
| JFK911 | mykeylynx: can't test this with that |
| mykeylynx | yikes |
| mykeylynx | thank you |
| Fuchikoma | Oh it's easy |
| JFK911 | a good test of a breaker will involve sparks |
| Fuchikoma | First, you set your multimeter to current mode |
| JFK911 | meter cannot make sparks |
| _abc_ | JFK911: here junkyard pilfering is considered a criminal offence |
| JFK911 | _abc_: i do not steal from them |
| _abc_ | JFK911: and you can't just buy stuff from it that you need either. |
| Fuchikoma | Then you put onelead on the breaker output, and the other on groudn |
| _abc_ | JFK911: the're really guarded and shit. |
| Fuchikoma | presto! breaker tested! |
| JFK911 | _abc_: The places operate in various manners, from "bring your own tools" to "our white coat assholes will bring you the part" |
| python476 | JFK911: but the parts are $1 I suppose |
| Fuchikoma | And you better hope it works or you'll need an ambulance |
| JFK911 | python476: I think a taillamp is $10 or $15 at my local yard |
| _abc_ | JFK911: as I said, by law, that does not fly here. |
| python476 | JFK911: they sold it 25 here |
| JFK911 | _abc_: You pay at the exit, for what you take out |
| python476 | acceptable |
| JFK911 | THey even warranty the parts |
| python476 | especially considering I broke it |
| python476 | that's nice |
| Nach0z | pullapart? |
| _abc_ | JFK911: tip: ROHS makes sure all electronics junk, cars, etc, are safe to export to Ghana where they can be safely re-melted over open fires. |
| JFK911 | Nach0z: Yea |
| JFK911 | _abc_: I think a good way to do that is to sell the electronics |
| _abc_ | python476: 25EUR? |
| JFK911 | Nach0z: Where an alternator fell on my forehead yesterday! |
| _abc_ | JFK911: Not allowed. Need to export them to Ghana 1st ;) |
| _abc_ | JFK911: were you disassambling something? |
| Nach0z | JFK911: oh right I forgot that I asked how that happened and idk if you answered |
| python476 | yeah sorry EUR |
| Nach0z | how tf did you drop an entire alternator on your head |
| JFK911 | _abc_: thats nonsense, the only parts that are not allowed to be sold are catalysts |
| python476 | probably less if you have the negotiating mindset |
| _abc_ | JFK911: sigh. Tried to do your antics in EU lately? |
| JFK911 | Nach0z: Ford, alt removed from underneath. HAve to release engine mount and push engine forward |
| python476 | Im just starting on it |
| mykeylynx | yikes lol thank you |
| JFK911 | _abc_: I ship leaded solder to EU, claiming exemptions by calling it lab equipment |
| Helle | JFK911: leaded solder is perfectly legal |
| _abc_ | JFK911: heh. Just call it 'Eurocrat transportation/medical spares' |
| JFK911 | Helle: Manufacturing with it though. |
| Helle | selling goods assembled with it is not |
| Helle | _abc_: even medical is now non-exempt from what I've been told |
| kcrow | _abc_: I have peanut buttered a tree and redeployed the antisquirrel vaseliner |
| JFK911 | I think the exemptions lapsed a couple years ago |
| _abc_ | Helle: it is exempted for life support afaik |
| Helle | only legal use is internal prototypes essentially |
| JFK911 | also "this was made in 2009" haha |
| Helle | _abc_: no longer is |
| _abc_ | Helle: okay |
| Helle | _abc_: expired in 2009 I belive |
| _abc_ | I stand corrected. |
| JFK911 | i thought it was 2014 |
| Helle | JFK911: may have been 2009 for general medical 2014 for life support |
| JFK911 | i didn't look very carefully, except i noticed that 'china rohs' is tougher |
| _abc_ | ?? |
| JFK911 | at any rate, nobody questioned me about lead |
| Helle | but yeah, you can just buy leaded solder in any store selling parts here |
| _abc_ | USA? |
| Helle | _abc_: The Netherlands |
| Helle | as said, lead solder is still legal, it's just selling goods made with it that is not |
| _abc_ | Helle: are modules and so on 'goods' in this sense? |
| Helle | _abc_: yes |
| _abc_ | Ouch |
| JFK911 | car electronics are supposed to be RoHS now |
| Helle | _abc_: so your ICs, modules, etc need to be lead free, but you can put them together with leaded solder for your own internal use |
| _abc_ | https://www.theregister.co.uk/2017/11/03/tor_ravamp/ |
| _abc_ | JFK911: that could be fairly dangerous! |
| JFK911 | obviously some things cannot be RoHS |
| JFK911 | cadmium, lead cannot be replaced |
| JFK911 | Be |
| JFK911 | etc. |
| Helle | JFK911: which are explicitely exempt |
| _abc_ | Be is really not needed imo |
| JFK911 | Cadmium used to be used for corrosion protection plating, that is not allowed anymore. |
| JFK911 | 1970s cars had everything underhood cad plated |
| _abc_ | Germanium era was the last time BeO was the only way to keep junctions from melting |
| Helle | heck, you can even apply for an exemption for a previously unknown reason if you can show that any replacement is unreasonable (not even impossible, just very unreasonable) |
| JFK911 | Well electronics are pretty space age now. 70GHz radars and stuff |
| JFK911 | in cars |
| _abc_ | Helle: cue 5 years of paperwork? |
| hetii | Hi L( |
| hetii | ;) |
| Helle | _abc_: depends on how many you want to sell |
| _abc_ | JFK911: 70 GHz radar is really just a chip. It's nothing. |
| Helle | they actually make things easy |
| hetii | Is such connection of two psu is allowed when both will have diodes on their ends: http://tinyurl.com/yau4s72m ? |
| JFK911 | _abc_: Sure, sounds like MMIC stuff to me |
| electrobot | hetii just linked to www.falstad.com |
| _abc_ | JFK911: also car radars are more like a TDR with no coax but open air. No big deal. |
| _abc_ | JFK911: not even MMIC |
| JFK911 | but i dont know if theres anything exotic/special about them |
| JFK911 | i know how radar works, i don't know how to deal with 70+GHz easily |
| _abc_ | There are chipsets. JFK911 70GHz was chosen because everything, including the quarter wave antennas, fits on cheap chips. 70GHz lambda/4 is ~1mm |
| Helle | _abc_: like, a prototype exemption because you are unable to obtain some parts lead free can be achieved if you can also show how the life time of the device is managed |
| JFK911 | I have samples of single chip radars |
| _abc_ | indeed |
| JFK911 | there are other bands too |
| _abc_ | 1mm is a nice round number to work with? |
| Helle | _abc_: no inching itchy radar ? |
| JFK911 | First car with radar i knew about was 1995 or so |
| Helle | but nice mm-radar ? |
| JFK911 | Wasn't a single chip for sure. |
| _abc_ | Helle: don't know how they played that one :) |
| Helle | _abc_: millimetric radar is an actual class of radars |
| Helle | so uuuh |
| _abc_ | JFK911: you can do an easy proximity sensor type radar with 1970s era Gunn diode devices aka door openers. |
| JFK911 | we used those to trip up police radar |
| _abc_ | JFK911: one assumes they got smarter. That's all. |
| _abc_ | smarter means: less accessible to hobbyists, more money, more features. |
| _abc_ | You can use a 1970s Gunn diode door opener and mod it in 2017. These modern mm band radars will have been designed to operate on one kind of car, locked to canbus keys, encrypted, hashed, and self destructing in 2-3 years. |
| _abc_ | Useless crap imo. |
| _abc_ | http://www.ti.com/litv/pdf/spyy005 fundamentals of mm wave |
| python476 | many companies put out nice documents online |
| python476 | |
| python476 | woops .. emacs bug |
| Hecate | PEWU |
| _abc_ | You're using irc from emacs? :) |
| _abc_ | ACTION gives python476 the nerd award for today |
| python476 | _abc_: yes, erc-mode |
| python476 | ACTION is pr...oud |
| python476 | emacs is the most advanced |
| Hecate | oh please don't start THAT garbage |
| python476 | to get kicked out of channels after copy pasting 392 lines of source code |
| python476 | Hecate: patience, wait for the joke to finish |
| Hecate | leave it out |
| python476 | aight |
| python476 | (vim user spotted) |
| _abc_ | I think that the ti.com doc on mm wave radar I linked above covers 99% of what one needs to know about car mm wave radars |
| Hecate | Wow. You twonks just don't know when to stfu |
| Hecate | (not you _abc_) the bible thumper there |
| _abc_ | Oi Hecate live up to your nick and stop the noise :) |
| Hecate | Live up to my nick? |
| Hecate | Make sense. |
| _abc_ | ACTION points Hecate to wikipedia etc |
| Hecate | It's a proper name of a ship. |
| Hecate | Wow. WAY too much skiddy ignorance here |
| _abc_ | https://en.wikipedia.org/wiki/Hecate yeah, ship. I immediately didn't think of that. |
| _abc_ | https://en.wikipedia.org/wiki/Hecate#Modern_expressions specifically the modern interpretation |
| splud | hey baldie |
| _abc_ | o.o |
| _abc_ | splud: Who are you talking to? |
| splud | baldengineer |
| _abc_ | ACTION thinks boldengineer sounds much better |
| baldengineer | it was taken and italicsengineer is too long to type |
| splud | what about superscriptengineer? |
| zigggggy | ACTION plants chia seeds on baldengineer's head |
| splud | footnoteengineer? |
| Metalsutton | I have having trouble sourcing WS2812 led's. Is there a good supplier who had plenty of these? |
| _abc_ | aliberryberry? |
| splud | _had_ ? What good does that do you? |
| _abc_ | https://www.thelocal.se/20171019/skelleftea-sweden-to-get-europes-biggest-car-battery-factory |
| _abc_ | One hopes quality will be good (with good reason), and, also, price will be more like .cn and less like .se? |
| DocScrutinizer05 | https://www.amazon.com/Led-World-WS2812B-Individually-Addressable/dp/B00YC7ZXRM |
| phinxy | What kind of IC would you want on a RGB LED? |
| kmc | 3 channel constant current PWM drive |
| kmc | with shift registers |
| _abc_ | Or linear current drive, since it makes no sense to use pwm for 20mA leds |
| _abc_ | s/no/little/ |
| Sculptor | phinxy, wat |
| Sculptor | _abc_, it depends on number of RGB leds |
| Sculptor | _abc_, also, there are readily available ICs with all the goods inside |
| Sculptor | phinxy, get a WS2811 chip and hook up your RGB led to it |
| DocScrutinizer05 | now that's one slogan: https://m.media-amazon.com/images/S/aplus-seller-content-images-us-east-1/ATVPDKIKX0DER/A35UAT07QG3EC6/B01DC0IOCK/nNVGzngOS1e._UX970_TTW__.jpg |
| Sculptor | phinxy, here https://cdn-shop.adafruit.com/datasheets/WS2811.pdf |
| Sculptor | phinxy, also, you can get LEDs with built in chip inside |
| Sculptor | phinxy, here https://www.aliexpress.com/item/5-1000pcs-DC5V-Diffused-round-hat-RGB-LED-with-WS2811-chipset-inside-5mm-F5-8mm-F8/32713415299.html |
| _abc_ | off topic but quite nice https://www.thelocal.se/20171026/omega-watch-found-in-swedes-attic-smashes-auction-world-record |
| _abc_ | It is a nice watch, but, imo, way overpriced for such an auction? |
| Sculptor | watches ... |
| Metalsutton | Is there any reason why 1mm pitch pin headers only come in gold plated? |
| Metalsutton | I cant seem to find any cheap ones |
| Sculptor | Metalsutton, link one product |
| Metalsutton | https://www.aliexpress.com/item/10-Pcs-Per-Lot-Gold-Plated-Pitch-1mm-50-Pin-Male-Single-Row-Straight-Pin-Header/32215271260.html?spm=2114.search0104.3.7.HeUtCH&ws_ab_test=searchweb0_0,searchweb201602_2_10152_10065_10151_10344_10068_10345_10342_10547_5660015_10343_10340_10341_10548_10541_10084_10083_10307_10175_10060_10155_10154_10056_10055_10539_10537_10312_10313_10536_10059_10314_10534_10533_100031_5650015_10550_10103_1 |
| Metalsutton | 0073_10551_10102_10552_5670015_10553_10554_10557_10142_10107-10552,searchweb201603_25,ppcSwitch_5&btsid=2ae1b501-abe4-451e-9d43-b0e65407b9c9&algo_expid=7d930147-4005-48cf-a496-516db8d8e79b-0&algo_pvid=7d930147-4005-48cf-a496-516db8d8e79b |
| Metalsutton | whoops! |
| phinxy | _abc_: why wouldnt you PWM a 20mA LED? Would a linear regulator do the job just fine? |
| Metalsutton | https://goo.gl/jtjTkQ |
| electrobot | Metalsutton just linked to www.aliexpress.com (10Pcs Per Lot Gold Plated 1mm 1.0mm Pitch 50 Pin Male Single Row Straight Pin Header Strip-in Connectors from Home Improvement on Aliexpress.com | Alibaba Group) |
| phinxy | What do you need 500 headers for |
| Sculptor | _abc_, this guy, from other network, bragged about his 'smallest watch in the world' https://photos.app.goo.gl/HMGDPOr0wX6gLMW02 |
| electrobot | Sculptor just linked to photos.google.com (Shared album - Chris Anderson - Google Photos) |
| _abc_ | phinxy: because extra dissipation is negligible and pwm causes rfi and extra parts needed to control it |
| _abc_ | phinxy: so yes many 20mA class led's are not pwm's |
| _abc_ | *pwm'd |
| Metalsutton | I basicly am creating a bunch of 50x50mm small boards, and wanting the smallest connector possible. Pictured is a 2.54 pitch header. https://i.imgur.com/Qnc2Rb8.png |
| Sculptor | Metalsutton, here https://www.aliexpress.com/item/20pcs-1-50p-50pin-1-0mm-pitch-single-row-needle-straight-male-pin-header/32584317701.html |
| DocScrutinizer05 | _abc_: well, that part about "extra parts needed" is works both directions, depending on usecase |
| _abc_ | yes |
| DocScrutinizer05 | generally speaking, linear tends to need more parts unless you want to control the whole thing by analog voltage |
| _abc_ | But mostly it's overkill. Infineon (nee Siemens iirc) makes a LOT of 2 terminal diode like devices whose purpose is to give constant current to led strings. There are lost of them used in automotive led lights and the like. No RFI emission. |
| Metalsutton | Oh cheers! I dont know why i had so much trouble finding one |
| _abc_ | DocScrutinizer05: one part, 2 terminals. |
| _abc_ | SMA or SMB usually, up to SMD size |
| DocScrutinizer05 | err what? |
| Sculptor | Metalsutton, 50 for $16.5 https://www.aliexpress.com/item/50pcs-lot-1-0mm-Pin-Header-Male-header-Double-Row-Single-Plastic-Straight-1-0mm-Berg/32650484668.html |
| DocScrutinizer05 | how would I reasonably control a RGB LED with a 2pin component? |
| _abc_ | https://www.infineon.com/cms/en/applications/lighting/led-strips-and-multichannel/linear-led-driver-ics/ DocScrutinizer05 |
| _abc_ | DocScrutinizer05: there'd be one each linear controller for each R,G,B channel |
| Sculptor | Metalsutton, use this tool: www.aliseeks.com |
| DocScrutinizer05 | _abc_: that's a glorified series resistor, no control |
| Metalsutton | Sculptor. Thats not 50pcs, that a 1x50 pin header which is gold plated. I think |
| Metalsutton | oh no, ur right. 50pieces |
| _abc_ | The series resistor can't cope with -50 to +120 degC environment and 7.5 to 16Vdc supply variations |
| Sculptor | 50pcs/lot 1.0mm Pin Header,Male header,Single Plastic,1*50P |
| Sculptor | select 1x50p single row |
| DocScrutinizer05 | _abc_: still pointless with a RGB LED |
| Sculptor | 50pcs is 50pcs |
| _abc_ | https://www.infineon.com/dgdl/Infineon--AN-v01_00-en.pdf?fileId=db3a304326c2768b0126d6af0a710b95 typical thing you'd find |
| _abc_ | DocScrutinizer05: right, whatever you say |
| DocScrutinizer05 | control != constant current |
| Sculptor | Metalsutton, + you get gold plated ones |
| DocScrutinizer05 | for a 20mA monocolor LED that shall shine fixed brightness, you don't need linear nor PWM cruft |
| _abc_ | right, you're on your own here |
| Sculptor | using a constant current source to power a led in 2017. priceless |
| DocScrutinizer05 | seems our definitions of "control" differ |
| DocScrutinizer05 | I'd not expect to see a RGB LED used in fixed brightness applications. I for one would choose a mono LED with the right color instead |
| Metalsutton | And would https://goo.gl/y61oLm , <- those plug into the pin header you reckon? |
| electrobot | Metalsutton just linked to www.aliexpress.com (NEW 100PCS/LOT Micro JST SH 1.0mm Pitch 4Pin Female Connector with Wire 100mm-in Computer Cables & Connectors from Computer & Office on Aliexpress.com | Alibaba Group) |
| Metalsutton | not sure about that white thing on the side |
| icee | if you've got a microcontroller and aren't going to do a bazillion units |
| icee | something like a ws2812 is pretty tempting. |
| icee | lots of brightness, RGB, comparable cost at low volumes to placing your ideal LED + transistor + resistor |
| icee | and you can always change your mind on the color later or do fancier things |
| DocScrutinizer05 | full turn completed ;-) [2017-11-03 Fri 21:28:13] <Metalsutton> I have having trouble sourcing WS2812 led's. [2017-11-03 Fri 21:35:26] <phinxy> What kind of IC would you want on a RGB LED? |
| _abc_ | http://www.electronicdesign.com/leds/led-string-driver-operates-single-cell neat simple circuit, nice source location (will work :) |
| icee | ;) there's lots of 2812-alikes |
| icee | eg SK6812 |
| icee | some that are RGBW too |
| Metalsutton | I just went with ali express in the end |
| durrf | iirc the 2813? is rgbw |
| durrf | i really like playing with addressable leds |
| icee | I like sk6812 because they're cute, but worldsemi now has cute ones too |
| durrf | i only have like 1m of 2812s left, but i have like 100some individual pcbs that have 6 solder points per pcb |
| icee | i put down 2812 on a recent project instead of two bright LEDs or 1 bicolor LED |
| ThePendulum | durrf: I don't think so, just a 4th clock pin |
| ThePendulum | oh wait |
| ThePendulum | they do have an RGBW variant, my bad |
| durrf | well it has 2xvoltage and 2xground pins |
| durrf | plus 1x data in and 1x data out |
| ThePendulum | the WS2813 from China are all RGB by the looks of it |
| ThePendulum | durrf: there should be a clock pin there somewhere |
| ThePendulum | huh, can't see it in the schematic either, hold on |
| ThePendulum | oh I see, that's their backup data line, not clock, my bad |
| _abc_ | icee is WS2812 / 13 easily obtainable where you are? |
| ThePendulum | I always get that kind of stuff from china |
| ThePendulum | dad got me a strip of WS2812Bs for 90 euros locally for my birthday, can get it for 20usd online |
| _abc_ | ouch |
| _abc_ | "some markup may apply"... |
| _abc_ | nuff said. Yes I see that here locally too, but there are a few local shops which are not anal about markup. I use them... |
| ThePendulum | _abc_: you'd hope you actually get better quality control, but unlike any of the strips I got directly from China (apart from me blowing them up), 2 of the chips on those broke... |
| ThePendulum | so I guess the only reason to get them is 'to support the local economy', for what it's worth |
| _abc_ | 10-30% markup is okay. The state charges 20% vat on top... |
| _abc_ | See it in context. |
| _abc_ | You don't get better qc you get return/replacement rights, local |
| _abc_ | Meaning, your project will work at most 24hrs after you discover a bad part bought locally. |
| ThePendulum | that'd put them at 32usd or 28eu :P |
| ThePendulum | they were 3 times that, it's insane |
| corecode | i think 200% markup is fine too |
| ThePendulum | true, I do suppose you can return it more easily |
| _abc_ | I don't know what strips cost here except I bought 1m of crap white led strip, 12V, weatherproof siliconed, for 2EUR. |
| ThePendulum | but on the other hand, I think I'd rather buy 4 strips and a handful of replacements at that rate... |
| _abc_ | And that was in the shady 'semi Chinaware' market next to a mall. |
| _abc_ | As expected, the strip is great at turning 12Vdc into heat, and wimpy at light output, but, hey. |
| ThePendulum | one of the strips I got was fantastically bright and vivid, magnificently white and awe inspiring |
| ThePendulum | too bad it only lasted half a second |
| Goatman | hi! what are the functions of c4 c6 c8 and c10 in the simple diagram? |
| Goatman | https://martein.home.xs4all.nl/pa3ake/hmode/img/bpf4_1.jpg |
| Goatman | what is their purpose? |
| ThePendulum | they pass butter |
| Goatman | I need to know what they do |
| ThePendulum | ACTION leaves in apology |
| Goatman | can they be bypassed? |
| Goatman | are they lowpass elements? |
| Goatman | What do they do? |
| Goatman | They look like lowpass elements |
| icee | Goatman: what exactly is this? is this an effort at drawing an equivalent-circuit for something? |
| icee | this whole thing is a high-order bandpass filter |
| Goatman | right |
| Goatman | what do dipoles 4, 6, and 8 do? |
| Goatman | are they lowpass elements? |
| icee | well, they provide high frequency attenuation, sure |
| icee | as do all the L's along the way |
| Goatman | ok. nice. and 2 and 10? are they impedance matching elements? |
| icee | they have a big effect on impedance, but they also are providing high frequency attenuation |
| icee | ah, the image name is bpf. ;) |
| icee | one of the easiest ways to back-of-the-envelope analyze this is to treat each of the pairs of capacitors as a capacitive divider |
| _abc_ | Goatman: that is a bandpass filter |
| _abc_ | Goatman: usually called a Cohn filter. |
| _abc_ | Goatman: the series LCs can be approximated by quartz xtals |
| _abc_ | In reality many such filters are built out of xtals. |
| icee | heh a typical quartz crystal will be a heck of a lot sharper than an LC pair |
| _abc_ | The caps you ask about (to ground) are coupling capacitors. |
| Goatman | _abc_, what do they do? |
| _abc_ | They 'couple'. Each one is part of the left and right LC circuit connected to it |
| Goatman | what does that mean? What is the purpose of ‘‘couple’’? |
| _abc_ | it is designed to couple (connect) a controlled small amout of the energy in each such LC circuit from input to output |
| _abc_ | couple = connect |
| Goatman | for what purpose? |
| kmc | to let the signal flow |
| _abc_ | To control bandwidth and bandpass shape |
| kmc | there are issues that can happen if you just connect them directly ("DC coupling") |
| icee | there are so many ways to answer that function |
| icee | depending on how high level of the answer you are seeking |
| Goatman | The practical purpose is do define the filter envelope? |
| Goatman | *to |
| Goatman | among other things? |
| _abc_ | https://www.arrl.org/files/file/QEX_Next_Issue/Nov-Dec_2009/QEX_Nov-Dec_09_Feature.pdf Goatman see page 4 |
| _abc_ | each xtal is =~ to a series LC circuit |
| icee | Goatman: sure, all of the selected components have an effect on input impedance, output impedance, center frequency, and frequency response |
| icee | _abc_: except with practically impossible L / C values :P |
| icee | else i'm pretty sure we'd rather use inductors and caps. |
| _abc_ | That particular kind of filter can be a Cohn or Chebysheff filter depending on how the exact values are tuned |
| _abc_ | http://www.robkalmeijer.nl/techniek/electronica/radiotechniek/hambladen/radcom/1995/07/page71/index.html Goatman more practical stuff |
| Goatman | _abc_, then without ‘‘coupling‘‘ the filter would not function at all |
| Goatman | there would be no signal path |
| _abc_ | Goatman: it would act strange |
| _abc_ | There would be signal path but it would not do what it is meant to |
| Goatman | with insanely high insertion loss |
| _abc_ | Actually that could be lower than expected but maybe |
| _abc_ | https://books.google.ro/books?id=9juUwbKP-58C&pg=PA66&lpg=PA64&ots=ZRh9I4h3-2&focus=viewport&dq=cohn+crystal+filter+series+resonant&hl=ro Goatman note Cp is VERY small usually wrt Sc |
| _abc_ | *Cs |
| _abc_ | (page 66 in case you land elsewhere) |
| Goatman | it looks like they couple the signal from the one LC network to the next |
| python476 | any one knows what kind of motor jehu garcia put into his samba EV conversion ? |
| _abc_ | Yes. They are part of both and the ratio between them and the C in the actual LC establishes the amount of energy coupled to the next one |
| _abc_ | @ Goatman |
| _abc_ | Goatman: research Cohn filter theory and it will come to you |
| _abc_ | http://www.fredspinner.com/W0FMS/WARCbler/warcbler2.html Goatman here's a simplified version which discusses the coupling caps in some depth |
| _abc_ | https://ea4nz.ure.es/rtrx/rtrx.html $omg. A guy aged 43 building a retirement transceiver? He must be more depressed than most of us? I am waypast 43... |
| Goatman | interesting |
| _abc_ | Goatman: the short version: xtal filter claculation is gory math. Or spreadsheets. |
| _abc_ | Unless you are an EE / studying EE, stick to the spreadsheet. |
| _abc_ | Chebysheff was an ace mathematician, it's probably insane to want to understand all he did :) |
| _abc_ | Just believe it, get the right spreadsheet, work with it. |
| _abc_ | Good luck. |
| Goatman | thank you for your insight |
| Metalsutton | If i am trying to do a calculation on figuring out a resistor value |
| Metalsutton | I am using an online LED calc. |
| kmc | or teach yourself complex analysis because it's fucking cool as shit |
| kmc | Metalsutton: current limit resistor? sure, go on |
| ThePendulum | damn, made an ali order the 23rd and it still hasn't even been picked up yet |
| kmc | it's worth knowing how to do that math yourself |
| Metalsutton | Do i add all forward voltages and forward current together of each led i want to use? |
| kmc | Metalsutton: LEDs in series or parallel? |
| Metalsutton | series |
| kmc | then you add voltages, but they'll all have the same current |
| kmc | (and if you'd said "parallel" I would make sure you know that you need one resistor per LED and not one total) |
| kmc | but one resistor is fine for series |
| Metalsutton | yup rgb leds |
| Metalsutton | so 60mA per series, and so i go max values right? so 2.2v + 2.2v + 2.2v / current = series resistor value? |
| Metalsutton | well. 20mA per series, but 60mA per LED seres |
| kmc | all LEDs will have the same current, so you need to pick a value that's in-spec for all of them |
| kmc | anyway when you do ohm's law you're looking at the REMAINING voltage, because that's what'll drop over your resistor |
| kmc | power supply voltage minus sum of series LED forward voltages |
| Metalsutton | ah. i see |
| Metalsutton | thats what will drop onto the resistor no matter what loction it is in the series? |
| Metalsutton | sorry i havnt done this for many many years. |
| kmc | yeah |
| kmc | you can put it anywhere in the chain, i think |
| kmc | putting it in the middle might be considered weird, but if it makes your design better then go for it :) |
| kmc | btw... you can test some of this stuff on http://www.falstad.com/circuit/circuitjs.html |
| vegii | I just reached the ATX PSU box to put some crap to use and I wonder why I still have some crap ATX PSU with a "2002/05" warranty sticker |
| kmc | film yourself exploding it, put it on youtube |
| kmc | Metalsutton: it's much nicer, especially with high power LEDs, to use an active constant-current drive circuit |
| vegii | kmc: I was about to use it for a 3dprinter, but it sounds like a safer option |
| kmc | this will deal with changes in the power supply voltage, as well as variation and thermal changes in the LED voltage, and are more efficient than burning off voltage in a resistor, and many of them can be obtained with other nice features like dimming |
| Metalsutton | I shouldnt use to resulted resistor values right? I should always go a little higher? |
| Sculptor | has anyone actually used SK6812RGBW leds |
| darsie | Metalsutton: If you have RGB LEDs, like three in a device, they might share the cathode or anode so you can't put them in series. |
| darsie | Metalsutton: How many pins do your LEDs have? |
| darsie | or do you have a single LED for each color? |
| Metalsutton | 6 |
| Metalsutton | They are 5050 rgb leds |
| darsie | Ok, then it seems you can put them in series. |
| Metalsutton | yup :) |
| darsie | If you don't want to run more than spec current through them you need the right or higher resistor. |
| darsie | But this will light all 3 colors at the same time which will look white from a distance. That's a waste of RGB LEDs. You could whites instead. |
| drac_boy | hi |
| darsie | hi |
| drac_boy | so do any of you know if its easy to determine if an overvoltage did a voltage regulator in or not so much? (its for low voltage dc anyhow) |
| darsie | does that mean destroyed? |
| OdinYggd | Put it on a breadboard with a resistor as a load, connect power. |
| OdinYggd | If the output is within spec it isn't dead |
| OdinYggd | If it isn't, it only cooks a resistor |
| restorer | got my Orange Pis |
| restorer | had to go out for another microSD card |
| DocScrutinizer05 | Metalsutton: please share lonk to datasheet (or type number) of the LED |
| kmc | R, G, B on full blast together also produces a very unappealing shade of white compared to a proper white LED with a broad spectrum phosphor |
| kmc | even if you try to calibrate it |
| kmc | this is why you can buy WS2812 style LEDs with 4channels: RGBW |
| kmc | adafruit sells them with three different white color temp options |
| kmc | having bought some of these, they are very worth it if you need colors + white |
| DocScrutinizer05 | I think cool white + R makes a better warm white than - warm white and blue makes cool/dayight? |
| DocScrutinizer05 | never tested it |
| restorer | related: how do some LED-backed LCD displays produce a smoother spectrum than others, if it's all RGB pixels? |
| restorer | or - is it actually just somehow LED vs CCFL? |
| DocScrutinizer05 | restorer: if I understand your question, it's about filters in LCD have wuder bandwidth than a monochrome LED |
| DocScrutinizer05 | wider* |
| restorer | hm |
| Metalsutton | speaking of the rgb spectrum. With my current prototype, i notice that on a cycle, the red does not stay on for long |
| Metalsutton | I think i might have to modify the sketch to slow down that section |
| restorer | I had a Dell display I bought in 2004/5 that had a nice wide spectrum, and a cheapo 28" that had a very discrete spectrum |
| restorer | this new laptop has a fairly good spectrum, with a few missing bars |
| restorer | (looking through a cheap optical spectroscope at a white part of the screen) |
| DocScrutinizer05 | Metalsutton: you're aware LEDs for R, G, B/W usually have massively differing Vfwd? |
| restorer | the cheap screen hurt my eyes after too long |
| restorer | I used Apple displays at a workplace that were awesome, and very nicely full-spectrum |
| Metalsutton | i notice that the red is diffrent than the others yes. |
| restorer | and I guess spectrum doesn't always correspond to CRI? because I just took a look at a terrible ghostly-blue headlamp I have, and it's a fine spectrum |
| Metalsutton | I have 3 mosfets going through an arduino. |
| Metalsutton | to power it all. |
| DocScrutinizer05 | Metalsutton: yeah, G is in between, sometimes more like B, sometimes more like R |
| restorer | ^ I assume that's whether it's Gallium Arsenide or Gallium Nitride? |
| DocScrutinizer05 | yep, somesuch |
| Metalsutton | So would that be something i have to fix through code or is there something i can do with the hardware |
| kmc | ok so I'm trying to extend the range of a LTE client device. it's 2 way MIMO. I got two dipole antennas of the kind you might use on your car, and plan to connect one to each antenna port on the device |
| kmc | but I'm not actually attching this to my car |
| kmc | so I'm wondering: should I put a ground plane between them, and should I connect it to the grounded shield of the coax? |
| kmc | er, below them, not between |
| kmc | and is there an ideal separation for the two MIMO antennas |
| kmc | and should I put them oriented the same way or what |
| DocScrutinizer05 | yes (plane), and yes (attach). Ideal separation is within wavelength range, or closer, I guess. Pulling the latter outa my rear |
| DocScrutinizer05 | (orientation) aren't they omnidirectional anyway? |
| kmc | okay. so around 30 cm, or maybe 1/2 or 1/4 of that? |
| kmc | 30cm is fairly convenient |
| DocScrutinizer05 | try |
| kmc | I'm gonna screw these to a piece of wood with some sheet metal over it |
| kmc | and yeah, I think they're supposed to be omni |
| kmc | however I didn't kno,w if MIMO works better with some different orientations |
| DocScrutinizer05 | you could mount them 90° offset, to handle H and V polarization |
| kmc | yeah |
| DocScrutinizer05 | I gather they are stationary, so just try what yields best results. It's not a science, rather an art |
| kmc | okay! |
| kmc | thanks :) |
| DocScrutinizer05 | yw |
| DocScrutinizer05 | (1/2, 1/4?) I'd bet a few cents on 5/8 or something. No 2s exponents |
| nooodlesnodes | hey Im using a new client and it only goes back to 2:18 pm (-6 GMT) I can anyone post the responses to me about my breaker box |
| ketas | DocScrutinizer05: rf is art now |
| ketas | ? |