2015-02-28 00:31 viric_ has joined #qi-hardware 2015-02-28 00:33 viric has quit [Ping timeout: 250 seconds] 2015-02-28 00:33 viric_ is now known as viric 2015-02-28 01:00 jwhitmore_ has quit [Ping timeout: 246 seconds] 2015-02-28 01:04 jwhitmore_ has joined #qi-hardware 2015-02-28 01:06 Broadball has joined #qi-hardware 2015-02-28 01:11 jwhitmore_ has quit [Ping timeout: 244 seconds] 2015-02-28 01:40 fengling has joined #qi-hardware 2015-02-28 01:40 fengling has quit [Client Quit] 2015-02-28 01:42 fengling has joined #qi-hardware 2015-02-28 03:47 wej has quit [Ping timeout: 245 seconds] 2015-02-28 03:59 wej has joined #qi-hardware 2015-02-28 04:18 Broadball has quit [Quit: Saliendo] 2015-02-28 04:53 fengling has quit [Quit: WeeChat 1.0] 2015-02-28 06:58 jekhor_ has joined #qi-hardware 2015-02-28 09:01 jwhitmore_ has joined #qi-hardware 2015-02-28 09:06 jekhor_ has quit [Ping timeout: 264 seconds] 2015-02-28 10:19 jekhor_ has joined #qi-hardware 2015-02-28 10:25 kilae has joined #qi-hardware 2015-02-28 10:26 viric_ has joined #qi-hardware 2015-02-28 10:30 viric has quit [Ping timeout: 256 seconds] 2015-02-28 10:30 viric_ is now known as viric 2015-02-28 10:37 whitequark: (Nemtsov) what's the public reaction ? 2015-02-28 10:40 define "public" 2015-02-28 10:41 'the peoples' opinion 2015-02-28 10:46 that's quite naive to assume that there is a common opinion 2015-02-28 10:55 the opinion of the best people 2015-02-28 10:55 :) 2015-02-28 11:18 viric has quit [Read error: Connection reset by peer] 2015-02-28 11:18 viric has joined #qi-hardware 2015-02-28 11:32 pcercuei has joined #qi-hardware 2015-02-28 12:03 the public reaction may very well consist of multiple contradictory opinions 2015-02-28 12:04 and "public" would be what is in evidence. well, if private reactions would differ widely from public ones, that would also be interesting 2015-02-28 12:11 e.g., do most people just shrug it off ? do they think this was a political killing ? do they think he had some shady business ? ... 2015-02-28 12:13 how can one know what most people think? 2015-02-28 12:14 at best, one can know what people around him think 2015-02-28 12:14 and usually these people are similar-minded with him 2015-02-28 12:20 this is very similar when someone concludes that results of elections are bullshit because he, his family and people around him voted for another party 2015-02-28 12:24 even if knew opinions of 10000 people, this can't be exprapolated to 145 mln population of Russia 2015-02-28 12:25 and this is very different from polls in the streets where you can ask opinion of random people 2015-02-28 12:25 people that one actually knows are not random at all 2015-02-28 12:29 what's your picture of this killing? You are the most relevant to us, because you are here. :) 2015-02-28 12:29 whatever you say will become "one russian I know says ..." 2015-02-28 12:36 "according to a source from russia" :) 2015-02-28 12:36 kyak: so i take it there were no major public reactions. protest marches or the like ? 2015-02-28 12:38 the guy was organzing a protest march, no? 2015-02-28 13:22 (Nemtsov) at least I heard he usually had bodyguards and the killing happened in a rare time window where they were not around, so conclusion is that the killers did quite some surveillance of his habits, for several days, to spot that window where it was feasible. 2015-02-28 13:24 other musing was about distance to Kremlin and whether the short distance rather is an argument pro or contra Putin being involved in this 2015-02-28 13:24 sounds like futile nonsense to me 2015-02-28 13:29 the question is: is "the public reaction" any relevant, for whom? 2015-02-28 13:32 Putin doesn't allow opposition to grow too popular. And any bad things happening to opposition seem not to trigger significantly more opposition. So from this perspective the Nemtsov killing is prolly as negligible as the public reaction on it 2015-02-28 13:38 in my book it's pretty similar to the early 1930s in Germany. Not everybody was already supporting the NSDAP, but the maybe 10% activists dominated everything. And yes, Putin also searching good relations to reactionary/fascist groups in whole Europe - despite (maybe rightfully) blaming Kiew politics for the same fascism. See whom he/separatists invited as observers of "elections" in Krim: Front Nationale and similar groups 2015-02-28 13:41 funny detail: those extremist groups all over Europe are receiving financing/credits from russian banks since nobody else wants to finance them 2015-02-28 13:49 somehow Putin seems to me like a thief on the market, pointing in an arbitrary direction and shouting "Catch the thief! Catch the thief!" and then picking the stuff he wants while everybody looks/runs the direction he pointed at 2015-02-28 13:53 funny idea: maybe Ukraine was better off asking China directly - instead of EU - for money and weapons 2015-02-28 14:02 would you like watching some "western propaganda"? http://www.zdf.de/ZDFmediathek/beitrag/video/2341864/Mensch-Putin%2521#/beitrag/video/2341864/Mensch-Putin! 2015-02-28 14:13 xiangfu has joined #qi-hardware 2015-02-28 15:12 wpwrak: let's wait till tomorrow. There was an opposition demonstration planned for tomorrow (irrelevant to this kill). It seems that the subject of this demonstration will now be biased 2015-02-28 15:13 from "putin is evil" to "putin is evil, because he is behind this" :) 2015-02-28 15:16 viric: if i were to have my own opinion on this, it must have been supported by proven facts 2015-02-28 15:16 unfortunately, there are no such facts by now, the investigation is in its early stage 2015-02-28 15:17 xiangfu has quit [Quit: leaving] 2015-02-28 15:18 kyak: on that you may be quite alone. Wait for more direct facts to raise an opinion 2015-02-28 15:19 the investigation, which will be of course fair and unbiased 2015-02-28 15:19 whatever it will be, there are not other options 2015-02-28 15:19 there are /no/ options, not no /other/ options 2015-02-28 15:20 you would know better if you were involved in the killing :) 2015-02-28 15:20 there is no reason to suspect that the investigation will produce results that can be trusted more than idle speculation on the internet 2015-02-28 15:22 i think you are being too categorical 2015-02-28 15:23 i was much less categorical until i looked at how the kirovles case proceeded 2015-02-28 15:23 whitequark categorical? :D 2015-02-28 16:15 kyak: ah yes, the protest should be interesting 2015-02-28 16:17 i'm curious because a bit over a month ago, in argentina, a prosecutor who has accused the president (and others) of trying to cover up the amia bombing and who was supposed to speak the next day in congress, was found dead in his apartment, in what looked like a suicide 2015-02-28 16:19 the evening after this made the news, there were impromptu protests. then, during the next weeks, there was a lot of extremely confusing maneuvering, with government officials - including the president - jumping to all sort of conclusions, contradicting them selves, contradicting facts, attacking left and forth, 2015-02-28 16:20 including the speaker if the cabinet on tv ripping a part a newspaper supposedly containing lies, which were proven as fact the next day, and so on. 2015-02-28 16:21 a few days ago, there was then the 2nd protest match, organized by prosecutors, which got some 300 kpeople in buenos aires alone on the street, despite conflicting with work hours and pouring rain. 2015-02-28 16:22 and of course there are opinion polls that all agree that most people think that the government is somehow guilty, suspecting it was either a cleverly disguised assassination or an "induced" suicide. 2015-02-28 16:24 all that, nota bene, without there ever having been any direct evidence for "foul play", just from the circumstances. so that shows rather clearly what people think of that government. 2015-02-28 16:25 now, russians may not be quite so hot-headed, but i would still expect some visible reactions. 2015-02-28 17:28 viric_ has joined #qi-hardware 2015-02-28 17:30 wpwrak: i didn't know about this story in argentina. But thinking about it, this "suicide" (whether is quotes or not) is less advantageous for the president and more advantageous to those who want tomake the conflict uncontrollable. 2015-02-28 17:31 viric has quit [Ping timeout: 256 seconds] 2015-02-28 17:31 viric_ is now known as viric 2015-02-28 17:31 argentina is doing quite independent (from usa) things these days 2015-02-28 17:31 so this is something to think about 2015-02-28 17:32 maybe there is even the third side 2015-02-28 17:32 not the argentina president, not the prosecutors 2015-02-28 17:41 i just watched "The Last Supper (1995)" 2015-02-28 17:42 quite interesting :) 2015-02-28 17:43 the world is much more complicated than it seems 2015-02-28 17:46 it looks already pretty complicated to me 2015-02-28 18:05 jekhor__ has joined #qi-hardware 2015-02-28 18:08 valhalla has quit [Ping timeout: 240 seconds] 2015-02-28 18:09 jekhor_ has quit [Ping timeout: 256 seconds] 2015-02-28 18:09 valhalla has joined #qi-hardware 2015-02-28 18:34 jwhitmore_ has quit [Ping timeout: 250 seconds] 2015-02-28 18:53 jekhor__ has quit [Ping timeout: 252 seconds] 2015-02-28 19:03 viric_ has joined #qi-hardware 2015-02-28 19:06 viric has quit [Ping timeout: 250 seconds] 2015-02-28 19:06 viric_ is now known as viric 2015-02-28 20:13 jwhitmore has joined #qi-hardware 2015-02-28 20:28 jekhor__ has joined #qi-hardware 2015-02-28 20:32 viric_ has joined #qi-hardware 2015-02-28 20:33 jwhitmore has quit [Ping timeout: 265 seconds] 2015-02-28 20:35 viric has quit [Ping timeout: 264 seconds] 2015-02-28 20:35 viric_ is now known as viric 2015-02-28 20:49 FDCX_ has joined #qi-hardware 2015-02-28 21:07 jwhitmore has joined #qi-hardware 2015-02-28 21:09 viric_ has joined #qi-hardware 2015-02-28 21:12 viric has quit [Ping timeout: 250 seconds] 2015-02-28 21:12 viric_ is now known as viric 2015-02-28 22:12 jow_laptop has quit [Quit: leaving] 2015-02-28 22:12 jow_laptop has joined #qi-hardware 2015-02-28 22:54 wpwrak: (protest march) seems in Mocow they wanna do an (even allowed) funeral procession, anticipated number of participants: 50k 2015-02-28 22:56 wpwrak: the problem is that in Russia there's quite a number of people who believe literally everything Mr Putin says. The same people who probably killed Nemtsov and do Anti Maidan protests 2015-02-28 22:58 "advantageous to those who want tomake the conflict uncontrollable" was an explanation that already came up 2015-02-28 22:58 in Russia for the killing, today 2015-02-28 22:59 "Islamists objecting solidarity with Charly Hebdo" was another nice one 2015-02-28 23:01 "make the conflict uncontrollable" -- I guess that been Putin with playing the extreme nationalist card 2015-02-28 23:06 somebody willing to review and comment on a schematics draft? IR detector, for signals in the kHz range (like CIR, IrDA SIR) http://wstaw.org/m/2015/02/28/plasma-desktopJh1893.png 2015-02-28 23:08 the resistor dimensioning is just ballpark numbers 2015-02-28 23:08 audio? 2015-02-28 23:09 IrDA 2015-02-28 23:09 kilae has quit [Quit: ChatZilla 0.9.91.1 [Firefox 36.0/20150222232811]] 2015-02-28 23:09 aah, yes. Some additional feature for "advanced signal analysis" 2015-02-28 23:10 to ADC of audio codec 2015-02-28 23:11 C1 might be not needed or even spoiling the circuit. Meant for speedup 2015-02-28 23:12 the signal of the pgotodiode is in the 500mV range 2015-02-28 23:12 photodiode 2015-02-28 23:12 might be less 2015-02-28 23:12 hmm why is it forward biased? 2015-02-28 23:13 but the circuit is deliberately designed for low sensitivity 2015-02-28 23:13 aren't photodiodes meant to be reverse biased? 2015-02-28 23:13 so that you'd have a linear characteristic everywhere 2015-02-28 23:13 (froward biased) actually it shouldn't be biased at all, but I admit I haven't checked the correct polarity 2015-02-28 23:13 https://en.wikipedia.org/wiki/File:Photodiode_operation.png 2015-02-28 23:13 it's meant to operate as photocell 2015-02-28 23:14 hmm 2015-02-28 23:14 the bias is an effect that's actually not been intended originally 2015-02-28 23:14 bias via R5 that is 2015-02-28 23:15 NB R6 is 1k 2015-02-28 23:16 http://neo900.org/stuff/joerg/random-media/IR-photodiode/BPW34+1kR_electron-flash.jpg 2015-02-28 23:17 viric_ has joined #qi-hardware 2015-02-28 23:18 and yes, prolly the diode needs to get reversed (again) 2015-02-28 23:18 originally I had it reverse biased 2015-02-28 23:19 though "bias" is ~ 1/22 of 2V 2015-02-28 23:20 viric has quit [Ping timeout: 264 seconds] 2015-02-28 23:20 viric_ is now known as viric 2015-02-28 23:20 actually of threshold (R3*R4]) which is ~500mV 2015-02-28 23:21 so 25mV bias 2015-02-28 23:22 the idea rather is that any voltage the diode produces from "offset" by ambient light average level will adhust the threshold reference voltage on C2 2015-02-28 23:22 adjust 2015-02-28 23:24 anyway regarding polarity of diaode: it shall crate positive voltage on opamp negative input when exposed to light 2015-02-28 23:24 create* 2015-02-28 23:25 the BPW34 creates up to 7V (!) over the parallel 1kR load 2015-02-28 23:25 huh 2015-02-28 23:26 unless I messed up with my scope's prpbes ;-) 2015-02-28 23:26 well... 7mA@7V. 49mW 2015-02-28 23:26 :nod: 2015-02-28 23:26 you could probably power the whole device in sleep mode from just that diode 2015-02-28 23:27 hehe, I just would need constant electron flashing 2015-02-28 23:27 Broadball has joined #qi-hardware 2015-02-28 23:28 more "normal" values to be seen in http://neo900.org/stuff/joerg/random-media/IR-photodiode/DS1Z_QuickPrint2.jpg 2015-02-28 23:29 which is my TV remote to BPW34+1kR 2015-02-28 23:29 with a maybe 15cm distance 2015-02-28 23:29 that's exactly the sort of signal the circuit is meant for 2015-02-28 23:30 http://neo900.org/stuff/joerg/random-media/IR-photodiode/DS1Z_QuickPrint3.jpg 2015-02-28 23:30 pcercuei has quit [Ping timeout: 265 seconds] 2015-02-28 23:32 http://neo900.org/stuff/joerg/random-media/IR-photodiode/DS1Z_QuickPrint5.jpg 2015-02-28 23:34 prolly the threshold should get adjusted rather to 50mV 2015-02-28 23:34 not to 500 like in the diagram's notes 2015-02-28 23:39 so R3 470k and R5 10k would be more like it 2015-02-28 23:42 we need to check the definitive values for the resistors with the photodiode and mounting we plan for 2015-02-28 23:43 background: http://neo900.org/stuff/papers/ir.pdf 2015-02-28 23:44 "2.6 Received signal processing" redesign 2015-02-28 23:45 we won't use HPF anymore 2015-02-28 23:46 (except the ~10s timing constant introduced by C2 and R5 for the offset compensation) 2015-02-28 23:47 we got a excellent S/N ratio on photon level, by the usecase of max 10cm distance between sender and our receiver. So we don't need much of a filter 2015-02-28 23:53 FDCX_ has quit [Ping timeout: 256 seconds] 2015-02-28 23:54 jekhor__ has quit [Ping timeout: 256 seconds]