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[01:17:23] <rue_house> orlock, do tell how you design those eh?
[07:24:52] <codepython777> Is there someone good with design hanging in here? I've a mechanical design question.
[08:42:17] <flyback> http://www.eetimes.com/document.asp?doc_id=1329303&print=yes
[13:00:30] <DagoRed> .title
[13:00:31] <makepi> DagoRed: EE Times - GaN Gets Somber Reception at APEC 2016
[14:14:59] <Kiloreux> anyone interested in slack group to discuss new papers ?
[20:00:13] <rue_house> GaN?
[20:34:03] <Snert_> gallium arsenide semiconductors got pretty much ignored at the trade show
[20:35:04] <Snert_> hell, germanium transistors have always been getting the short end of the stick.
[20:35:10] <Snert_> same thing.
[20:39:58] <rue_house> teee hee hee I'm turning hexchat into a CAM processor
[20:53:28] <rue_house> #include <stdio.h>
[20:53:28] <rue_house> int main(void) {
[20:53:28] <rue_house> static int ptr = 0;
[20:53:28] <rue_house> char * words[10] = {"this ", "is ", "not ", "the ", "way ", "to ", "program ", "in ", "C.\n", ""};
[20:53:28] <rue_house>
[20:53:28] <rue_house> printf("%s", words[ptr]);
[20:53:30] <rue_house>
[20:53:32] <rue_house> ptr++;
[20:53:34] <rue_house> if ( *words[ptr] != '\0' )
[20:53:36] <rue_house> main();
[20:53:40] <rue_house> return 0;
[20:53:42] <rue_house> }
[20:54:33] <DagoRed> that's aweseome rue_house
[20:54:55] <rue_house> :)
[21:02:42] <Tom_itx> rue_house what MB do you run on your 'good' pc?
[21:02:54] <Tom_itx> MB/cpu
[21:03:14] <orlock> i know you didnt ask me
[21:03:25] <orlock> but 3.4Ghz 2600k and Z77 here
[21:03:25] <Tom_itx> well?
[21:03:28] <Tom_itx> spit it out
[21:05:11] <rue_house> ASUS
[21:05:17] <rue_house> AMD processor
[21:05:22] <Tom_itx> are gigabit ok?
[21:05:34] <rue_house> yes, but the last one I got has a 486 processor on it
[21:05:41] <orlock> pink_vampire: go to thingiverse, use the object viewer, and rotate till you can see the bottom
[21:05:43] <orlock> doh
[21:06:13] <orlock> Gigabyte are fine
[21:06:23] <orlock> chances are yo uwont notice any difference between any of them
[21:09:45] <rue_house> http://paste.debian.net/422881/
[21:11:42] <rue_house> anyone who legitimity trying to sell that as code should be shot.
[23:08:02] <adam789654123> if i have an oversized wire to my headphones, and i wrap it up into a coil so i can fit it into my pocket, could the signal interfere with itself and cause a phenomena similar to as if there was a break in the wire?
[23:09:10] <adam789654123> two chords are giving me the same issue, so maybe its something to do with the electro magnetism cancelling
[23:09:11] <adam789654123> idk
[23:09:40] <adam789654123> never heard of this exactly, but ive only been hinted to it, but if any people have experience with this kind of thing, i bet they are here
[23:10:06] <adam789654123> otherwise.... just tell me i sound crazy and i will crawl back into my corner
[23:11:24] <adam789654123> i guess.... if i wrap a chord (isolated with rubber) into a coil, can the signal intefere with itself?
[23:11:35] <adam789654123> if its direct current
[23:21:28] <adam789654123> apparently i have a break in each wire
[23:21:33] <adam789654123> :(
[23:22:27] <Triffid_Hunter> adam789654123: not with audio frequencies, no
[23:23:03] <adam789654123> ok.... i remember i needed to cross out the rf in a leg when doing house wiring
[23:23:33] <adam789654123> but i wasnt sure about with audio cable, or the significance such might have with impeding signal
[23:24:06] <adam789654123> the coincidence was just too much, 2 broken cables that gave way at the same time
[23:24:11] <adam789654123> alas.... it is so
[23:24:12] <adam789654123> :p
[23:24:14] <adam789654123> :(
[23:24:26] <adam789654123> my p and paranthesis are next to eachother
[23:24:30] <adam789654123> hate it when i do that
[23:25:10] <Wetmelon> It's very unlikely
[23:25:25] <Wetmelon> And isn't the voltage / current itty bitty?
[23:26:33] <Triffid_Hunter> Wetmelon: it's not so much the voltage, but the dv/dt that influences EMI and suchforth
[23:28:19] <Wetmelon> Hmm. Why's that? Capacitive / inductive behaviour what with C dv/dt etc?
[23:29:12] <Wetmelon> Maybe you can answer this... why do we twist differential wire pairs?
[23:29:25] <DagoRed> I can answer that.
[23:30:02] <DagoRed> Differential signaling couples the magnetic fields which helps with propogation and noise immunity.
[23:35:45] <adam789654123> if i understand, the magnetic feild might go counter clockwise, so if you have the to and fro coupled, its like having a clockwise and counterclockise magnetic rotation, which cancels out.
[23:36:06] <rue_house> what are you trying to make?
[23:37:33] <DagoRed> adam789654123: It's differential signaling so the "right hand rule" applies.
[23:38:21] <adam789654123> is "differential signaling" like the "to fro" thing is mentioned?
[23:38:24] <Triffid_Hunter> Wetmelon: twisting cancels all the noise in the near field, so there's basically nothing left to resolve out in the far field
[23:38:29] <adam789654123> ive not heard the term
[23:38:35] <Triffid_Hunter> Wetmelon: that goes for both radiated and absorbed EMI
[23:38:40] <DagoRed> Also... when you induce a current on a wire the opposite current is induced by the magnetic field.
[23:40:21] <Wetmelon> Huh
[23:40:28] <Wetmelon> That kinda makes sense.
[23:40:30] <DagoRed> adam789654123: differential signaling is w1: +5v w2: -5v for a 1, reverse for a 0.
[23:40:44] <Wetmelon> Well depends
[23:41:12] <Wetmelon> I'm specifically talking about CAN, which is w1: +5v w2: 0v for a 0, 2.5v / 2.5v for a 1
[23:41:58] <Wetmelon> Does the # of twists / inch matter much? Or you should roughly match it to frequency?
[23:42:47] <adam789654123> DagoRed: oh.... so there are two voltages that represent one value
[23:42:58] <orlock> you know
[23:43:07] <orlock> this was all explained recently on a link from HaD
[23:43:07] <DagoRed> It does matter. The more twists the higher the frequencies.
[23:43:11] <Triffid_Hunter> Wetmelon: doesn't matter much, but for bundles of twisted pairs it can be useful to have a different twists/length on each one. CAT6 does this for example
[23:43:19] <DagoRed> orlock: truth
[23:43:37] <orlock> Triffid_Hunter: heard of Dagu?
[23:43:40] <Triffid_Hunter> nope
[23:43:49] <Wetmelon> HaD?
[23:43:59] <Triffid_Hunter> Wetmelon: hackaday
[23:44:03] <Wetmelon> Ah
[23:44:07] <orlock> Triffid_Hunter:
http://www.dagurobot.com/
[23:44:09] <DagoRed> .HaD 2
[23:44:12] <Wetmelon> I never go on there, I really should
[23:44:13] <makepi> DagoRed: 0.) Wooden Computer Case Adds a Touch of Modern -
http://j.mp/1RPhahs
[23:44:15] <makepi> DagoRed: 1.) A Ridiculous Way to Light an LED: Candle-power -
http://j.mp/1PGPqnN
[23:44:33] <rue_house> I made a wood case
[23:44:38] <Triffid_Hunter> Wetmelon: I stopped going years ago, it's all dinky arduino and RPi stuff and led cubes and basic shit like that
[23:44:40] <rue_house> its a clam shell style
[23:45:14] <orlock> Triffid_Hunter: some aussie from brissy was making a lot of cool robots out of random bits, now he's over there working for them full time (has been for a decade maybe?)
[23:45:21] <Triffid_Hunter> orlock: you gotta realise I've been in huaqiangbei long enough for everything there to look ludicrously expensive
[23:45:21] <rue_house> the kicker is that you need a boost smps to do it