IRC log for #neo900 on 20160523

00:14.00*** join/#neo900 kingneil (56a541dc@gateway/web/freenode/ip.86.165.65.220)
00:14.18kingneilHello everyone. I Just heard about the neo900
00:15.59kingneilOnly allowing the CPU access to the microphone is certainly interesting... but frankly, I'm not sure that I can ever trust a live microphone ever again
00:18.17wpwrakkingneil: you can always gnaw through the trace and connect it through a switch you attach somewhere :)
00:18.46xmanWell that would depend on many factors, like the OS your running, the hardware, the manufacturer perhaps and maybe chip makers as well.
00:18.57kingneilOn my phone... I literally use a needle and hammer to smash in the mic... and then I use a plug-in mic...
00:19.00kingneilthat's how paranoid i am
00:21.38xmanheh, well that pretty good way to make sure. But with project like this and other you could be able to save the smashing. But with software I don't think you can really ever say safe and networked anymore.
00:21.44dTalcouldn
00:21.50dTal't you just tape over it? :p
00:22.24xmantodays computer could piece together the mumbles ;)
00:22.47kingneilI'm not sure that a networked computer can ever be safe.. I agree with that... TAILS and QUBES are promising... but I wonder about the NSA just sending you a fake version of the ISO file
00:23.23DocScrutinizer05there's MD5 for that
00:23.39kingneilyeah good point about MD5, SHA etc.. true i guess
00:23.59xmanwell the only way is to become well versed in cryto tech and maybe programing to compile all your software.
00:24.32DocScrutinizer05at a certain level of paranoia, give your friend abroad  a phonecall and ask them to open the website and read the MD5sum for you
00:24.42xmanotherwie you depend on other no matter what you use.
00:24.51wpwrakof course, that doesn't help if the GENTICALLY ENGINEERED BRAINWORMS (!) THEY placed into DocScrutinizer05's head make him sign THEIR binary ....
00:25.09xmanhah, nice.
00:25.12kingneilI haven't seen a single person break through the QUBES sandbox yet.. Someone should pay for a full code audit like they did with TrueCrypt
00:26.09DocScrutinizer05AFK
00:26.43xmanthe nice thing with neo project is they're putting all the hardware out in the open for you to see. And tell you when there's any issues.
00:27.36xmanSo this is one of the reason why I like this project over some others especially android based. Which I fine kind of missing the point.
00:29.32DocScrutinizer05anyway for Neo900 mic to go rogue, you need a tainted kernel that configures the codec chip in a way you didn't request for
00:29.39DocScrutinizer05meh he's gone
00:29.59DocScrutinizer05AFK again
00:31.52wpwrakand at some point also the acceleration sensor (BMX055) becomes a problem, with a bandwidth of up to 1 kHz
00:32.25xmanhehe, perhaps there was a noise on the dial up line ;). I not a fan of using the word paranoid, since it has such a negative connotation.
00:33.49DocScrutinizer05barometer has too low bandwidth, no?
00:34.04wpwrakyeah, i guess. didn't see it any number at a quick glance
00:34.30DocScrutinizer05baro makes for a nice infrasound mic though
00:35.34DocScrutinizer05possibly even detecting heartbeat within a distance
00:36.36wpwrakthen, when detecting some arrhythmia, make noise to startle you even more
00:37.00DocScrutinizer05you could use camera for that too
00:37.48DocScrutinizer05even a cheesy VGA camera can detect the miniscule color changes in your face from each heartbeat
00:38.02dTalthat research paper blew my mind
00:38.06DocScrutinizer05hehe
00:38.09DocScrutinizer05indeed
00:38.22dTalalthough it's worth noting that you have to filter it to a specific frequency you're looking for anyway
00:38.33DocScrutinizer05well
00:38.39dTalit's like time-domain EQ
00:40.24DocScrutinizer05isn't that kaiman filter? when you have a pretty good idea what you're expecting to find in the noise
00:42.17DocScrutinizer05then otoh it's prolly not that suited for arrhythmia
00:42.44dTaldepends how wide you can make the frequency band and still detect the amplitude change
00:42.48DocScrutinizer05combining audio and video would make a lot of sense for that
00:42.51dTalI imagine it's a trade-off
00:43.15DocScrutinizer05well "audio" as in infrasound by barometer
00:44.39DocScrutinizer05I know they detect humanoid liveforms hidden in trucks etc, at some frontiers and high security objects, probably with a similar method based on infrasound
00:45.44dTal"humanoid lifeforms" -- you mean people
00:45.53dTalDocScrutinizer05 are you an alien
00:46.08DocScrutinizer05well, I'm pretty sure it will detect each heartbeat that's within the range
00:46.31DocScrutinizer05so all primates will trigger an alarm
00:47.26DocScrutinizer05they are interested in immigrants or terrorists though
00:47.37DocScrutinizer05which are usually people
00:48.08dTalfair enough, you're probably right that the tech won't know the difference between a human and a chimp :p
00:48.28dTalalthough a spider monkey might look odd
00:48.58dTaland a kangaroo might not, they're kind human sized and shaped
00:50.23DocScrutinizer05yep
00:52.02DocScrutinizer05I wonder how hard it would be, technically, to eliminate all heartbeat infrasound emission by antisound
00:52.56DocScrutinizer05not interference but simply phase inverted countersound
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00:58.20dTalthat's interference
00:59.53dTaldepends on the frequencies in heartbeats
01:00.22dTalthey're pretty low so you have a shot
01:46.09*** join/#neo900 Humpelstilzchen (erik@x4e36fc2f.dyn.telefonica.de)
01:52.13MonkeyofDoomhaha, I was going to say... "how is that not interference??"
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08:43.28wpwraklatest draft version of the location assignment: https://neo900.org/stuff/werner/v2loc/v2loc
08:44.17wpwrakcolors aren't too great, but i'll leave proper fine-tuning for later
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08:46.45wpwrakactually ... found two more things that need fixing .. editing ...
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10:21.18wpwrakupdated version, at the same URL
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11:12.14wpwrakDocScrutinizer05: you'll notice few more red boxes. they're things that aren't finished in the schematics, even if we may have a detailed design elsewhere (e.g., SIM switch)
11:13.58wpwrakso i shifted the definition of "unfinished" a bit. in the regular v2 block diagram, the SIM switch would show up as "designed", since it would then land in nik's queue
11:15.18wpwrakin any case, the size of this set of those critters should rapidly shrink to zero. then i can use red for something else, e.g., unintentional sources of global warming :)
11:39.12wpwrakit's kinda cute that eagle pretends to let you choose not to be bothers with update notifications. of course, it completely ignores whatever you ask it to do, and keeps on pestering you ...
11:42.31wpwrak<PROTECTED>
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12:53.03wpwrakregarding gpio extenders, this is the chip we found to look best: http://www.digikey.com/product-detail/en/exar-corporation/XRA1201PIL24-F/1016-1712-ND/2791210
12:54.32wpwrakmost of the system is in the 1.8 V domain, but there are a few things at 3.3 V. the XAR1201P (when operating at 1.8 V) can also interface with that, as long as it's only for input or open-drain.
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17:08.03wpwrakahycka, ceene: i'm thinking of posting this https://neo900.org/stuff/paste/Chah3Ohm   in response to this http://talk.maemo.org/showthread.php?t=91142&page=282
17:10.22wpwrakahycka, ceene: is what i wrote okay with you ? anything to add/change ?
17:11.31wpwraki didn't add an introduction because a) i wouldn't know what exactly to write, and b) that could also go into some later, more detailed post. but if you want to add some words already, that would of course be fine as well
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