| whitequark | wpwrak: err... headless chicken? wat? | 00:17 |
|---|---|---|
| whitequark | oh shi~~ I turned a module on without antenna soldered to it | 00:18 |
| whitequark | seriously I need some sleep :/ | 00:18 |
| wpwrak | whitequark: (chicken) see the wings in the NORAD logo ? do you see a head, too ? | 00:19 |
| whitequark | ahhh, got it. funny! | 00:20 |
| rz2k | whitequark: srsly dude, being up more thatn 14 hours is pure masochism. | 00:37 |
| wpwrak | rz2k: some would consider it a good beginning :) | 00:45 |
| whitequark | DocScrutinizer51: hmm, attached the second module | 00:53 |
| DocScrutinizer51 | whitequark: my PC has barfed up, about to reboot | 00:54 |
| whitequark | oh, sure | 00:54 |
| whitequark | DocScrutinizer: got your PC fixed? | 01:07 |
| DocScrutinizer | reboot | 01:07 |
| whitequark | ok. so, I connected the second module, they both seem to work | 01:07 |
| whitequark | ... and they ofcourse have slightly different internal clock frequency, which drives me crazy as the leds are a bit out of sync :/ | 01:07 |
| DocScrutinizer | now for some suspend of my wetware, in 6 hours I'll enjoy a 3 day code quality training by ENEA | 01:08 |
| whitequark | ah ok, tomorrow then | 01:08 |
| whitequark | ... code quality training?.. | 01:08 |
| whitequark | like "don't put all code in your main()"? | 01:08 |
| Action: whitequark always thought that you get to write better code by not being an ignorant fuck rather than attending any trainings. still... | 01:09 | |
| whitequark | ewww. according to my scope, that module just got 8V+ ripple into the power source | 01:12 |
| qi-bot | [commit] Xiangfu Liu: cgminer: most patches merged to upstream (master) http://qi-hw.com/p/openwrt-packages/9feb482 | 02:19 |
| qi-bot | [commit] Xiangfu Liu: icarus-miner: remove outdata package (master) http://qi-hw.com/p/openwrt-packages/4c47465 | 05:42 |
| DocScrutinizer | whitequark: yep, something like that | 05:56 |
| DocScrutinizer51 | friggin spam | 11:15 |
| wolfspraul | Jon is just excited about this hyper-integrated little computer :-) | 11:51 |
| wolfspraul | supported well by openwrt | 11:51 |
| roh | well.. nothing really new or special ;) | 11:53 |
| wolfspraul | I wouldn't agree. it's a full computer with case and wifi and antenna for 16 USD. | 11:54 |
| larsc | DocScrutinizer51: /ignore qi-bot | 11:55 |
| wolfspraul | and usb 2.0 host | 11:55 |
| wolfspraul | but it's not open hardware, for sure | 11:55 |
| viric | what computer? | 11:55 |
| viric | 16USD? what children mounted it? :) | 11:55 |
| wolfspraul | a router, TL-WR703N (risking more spam :-)) | 11:56 |
| viric | aah | 11:56 |
| rejon | viric, its ok, it was part of a conversation | 11:57 |
| viric | ? | 11:58 |
| viric | what conversation? | 11:58 |
| whitequark | wolfspraul: define "full computer" | 12:01 |
| wolfspraul | cannot | 12:01 |
| whitequark | is atmega8 a "full computer"? is stm32f103rb? it has usbhost too. | 12:01 |
| whitequark | and 32k of ram. more than Apple II | 12:02 |
| viric | ;) | 12:02 |
| whitequark | just a cheap little router on stupid mips | 12:02 |
| roh | wolfspraul: yes. but that still isnt something special. most tp-link wifi routers and aps are in that pricerange if you buy more than single digit volumes | 12:03 |
| wolfspraul | I'm not here to defend tp-link or this router | 12:03 |
| wolfspraul | if you don't like it, please ignore it :-) | 12:04 |
| wolfspraul | it's not even open hardware | 12:04 |
| rejon | or better, get nanonote and milkymist up to compete with the tplink routers :) | 12:04 |
| wolfspraul | maybe I can include a 703n as a wifi-gateway for m1 though, but I shall work on that silently :-) | 12:04 |
| wolfspraul | to bring out the beauty of m1 *today* :-) | 12:04 |
| viric | hehe | 12:04 |
| roh | sure. i also dont want to talk it down. i use tp-link atheros chipset based devices myself. but its nothing special per se. neither the price nor its features | 12:05 |
| whitequark | srsly, usbhost and wi-fi are just readymade ip cores with a little bit of external components, and a readymade linux driver | 12:05 |
| Action: whitequark uses tplink too, fwiw | 12:05 | |
| whitequark | DocScrutinizer51: I assembled your coupling circuit, and it, er, works very bad | 13:23 |
| whitequark | (through it's probably because I screwed something up) | 13:23 |
| whitequark | there is a LOT of noise which comes from somewhere, and has a peak on 875Hz | 13:25 |
| whitequark | according to fft | 13:25 |
| whitequark | simple: the gnd was broken in audio cable I used. | 13:32 |
| whitequark | DocScrutinizer51: yeah, works fine | 14:07 |
| whitequark | but I removed a potentiometer across mic lines; the sound is better without it | 14:08 |
| whitequark | (the circuit is http://rghost.ru/36815801.view) | 14:08 |
| DocScrutinizer51 | OMFG, that training will kill me, at wednesday the latest | 16:05 |
| whitequark | what's with it? | 16:06 |
| DocScrutinizer51 | ENEA code quality | 16:06 |
| DocScrutinizer51 | about all related to C and C++ | 16:07 |
| DocScrutinizer51 | ALL | 16:07 |
| DocScrutinizer51 | starting from pre/post-increment to communications in team to 'are you better thasn LINT?' | 16:08 |
| DocScrutinizer51 | the booklet has 270p, we managed to eat thru 57 today. will be fun on day3 | 16:10 |
| DocScrutinizer51 | I already start feeling sick ;-D | 16:11 |
| whitequark | DocScrutinizer51: I connected two modules simultaneously | 16:42 |
| whitequark | they work | 16:42 |
| whitequark | also, there's ~500mV ripple at the Vdd of each module (measured at its pin) | 16:43 |
| whitequark | and a 700mV ripple at the power source (three AA batteries) | 16:43 |
| whitequark | how bad is that? | 16:43 |
| DocScrutinizer51 | probably not too bad yet | 16:45 |
| DocScrutinizer51 | though you should make sure you use low ESR powersourse and thick wires for VDD | 16:46 |
| DocScrutinizer51 | and GND | 16:46 |
| DocScrutinizer51 | too high ESR is main culprit of strange annoying connection faults | 16:47 |
| DocScrutinizer51 | most likely AA batteries might be a suboptimal power source | 16:51 |
| whitequark | well, I use my wires in packs of 3 | 16:52 |
| DocScrutinizer51 | then OTOH you could add a 5000uF | 16:52 |
| whitequark | each one is .05 sq.mm, through | 16:52 |
| DocScrutinizer51 | 4700 actually | 16:52 |
| whitequark | also, near to each module I added a low-ESR 100u tantalum cap and a 100n ceramic one | 16:53 |
| DocScrutinizer51 | way too low for the 2A bursts | 16:54 |
| DocScrutinizer51 | anyway, I'm wasted. May I'll be back in an hour or so | 16:55 |
| whitequark | sure | 16:55 |
| DocScrutinizer | hey, Adam gave a new schem to us :-) | 17:49 |
| DocScrutinizer | sorry whitequark - did you say your wires are 0.05mm^2 ? | 18:00 |
| DocScrutinizer | if that's correct, you probably want to use 20..50 of them | 18:01 |
| whitequark | DocScrutinizer51: er, not sure. I shoulda find a caliper somewhere... | 20:12 |
| whitequark | DocScrutinizer51: btw, would you recommend to keep using a mechanical caliper, or are digital ones generally better (worse)? | 20:38 |
| wpwrak | whitequark: some are as precise (and a lot more convenient). some are worse. ironically, the cheapest-looking digital one i have is very good. | 21:33 |
| DocScrutinizer | whitequark: I have no experience, but I heard the electronic calipers need *a battery* ;-) | 21:59 |
| whitequark | wpwrak: yeah, I observed the latter at times. For example, $1.5 chinese "switzerland" tweezers were way better than 5 times as expensive bought here... | 22:00 |
| whitequark | DocScrutinizer: oh. yes. a battery. that answers the question. | 22:00 |
| DocScrutinizer | sometimes for me that pretty much actually does | 22:00 |
| viric | I also dislike batteries | 22:01 |
| viric | we want supercapacitors. | 22:01 |
| DocScrutinizer | lemme do the math: battery: 2$, selfdischarge EOL: after 2 years the latest, number of usage during that period (YMMV): max 10 times avg. | 22:03 |
| DocScrutinizer | so one usage would cost me 20ct | 22:03 |
| viric | not to mention the ecological impact | 22:03 |
| DocScrutinizer | plus inconvenience of flat bat when I *really* need it | 22:03 |
| whitequark | viric: do you like RoHS too? | 22:04 |
| viric | whitequark: I don't know details of it | 22:04 |
| viric | whitequark: I've only seen marketing | 22:04 |
| whitequark | ... or maybe think that there is "damage to ozone layer" which is "harmful to the planet"? | 22:04 |
| viric | I think a digital caliper is more polluting than a mechanical caliper | 22:06 |
| viric | for a very little win | 22:06 |
| whitequark | sigh | 22:06 |
| whitequark | on the topic of supercaps: we already have two kinds | 22:06 |
| whitequark | 1) ionistors, but they kinda self-discharge in a few days | 22:07 |
| whitequark | 2) rechargeable lithium batteries. have (almost?) the same look as the common coin-cell ones, but can be recharged with a small constant current; used in RTCs | 22:07 |
| whitequark | through I don't know where one can buy the 2) | 22:07 |
| whitequark | and afaik they can't be recharged in the "cellphone" mode, that is, go from 0% to 100% in a few hours | 22:08 |
| whitequark | DocScrutinizer: for me, the problem with these batteries is that you'll have a hard time finding $RANDOM pcs of LR$RANDOM when you least want to deal with it | 22:09 |
| wpwrak | DocScrutinizer: i think my battery-powered one has been up for more than 2 years by now. still works great. probably hundreds of measurements in that time. i use it almost daily. ymmv indeed :) | 22:16 |
| wpwrak | DocScrutinizer: i don't quite like the short (~ 1 yr) battery life of my micrometer, though. but then, that one is kinda hard to read without electronics. (it has the traditional scale, too) | 22:18 |
| wpwrak | (and yes, that one gets about 10 uses per year on average. for cases where i really want to know and where i need reproducible pressure) | 22:20 |
| whitequark | ... oh. | 22:57 |
| whitequark | this module has 2.8V inputs. | 22:57 |
| whitequark | and I thought they were 3.3V. | 22:58 |
| whitequark | fuck. | 22:58 |
| wpwrak | barbecue time ! ;-) | 23:03 |
| rz2k | lol | 23:04 |
| --- Tue Mar 6 2012 | 00:00 | |
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