2012-12-07 00:37 liuqi has joined #qi-hardware 2012-12-07 01:19 ha same ben issue with macs http://lwn.net/SubscriberLink/528112/9773efa029df260d/ 2012-12-07 01:24 xiangfu has joined #qi-hardware 2012-12-07 02:03 urandom__ has quit [Quit: Konversation terminated!] 2012-12-07 02:14 Only a few days left to order an open source hardware encrypted storage device on indiegogo www.indiegogo.com/CryptX2 check it out 2012-12-07 02:21 hmm, not going too well ... 2012-12-07 02:23 I found this nice project reading through the recent llvm dev meeting... http://llvm.org/devmtg/2012-11/ 2012-12-07 02:24 it's called Shang HLS http://llvm.org/devmtg/2012-11/Hongbin-Generating.pdf 2012-12-07 02:24 sources are here https://github.com/OpenEDA/Shang/blob/master/README.md 2012-12-07 02:25 dandon_ has joined #qi-hardware 2012-12-07 02:25 dandon has quit [Ping timeout: 255 seconds] 2012-12-07 02:25 university of illinois open-source license, reading... 2012-12-07 02:25 dandon_ is now known as dandon 2012-12-07 02:26 always those licenses :-) 2012-12-07 02:26 human stupidity may be incurable :) 2012-12-07 02:27 ah it's the same as the llvm license, bsd-like 2012-12-07 02:27 alright then 2012-12-07 02:27 at some point something like that shang (or c-to-verilog or legup) may be useful to me as a higher-layer to feed fpgatools 2012-12-07 02:27 looks very interesting, yes 2012-12-07 02:28 bring down another barrier of entry 2012-12-07 02:31 I will continue to focus on the bits, and access all the features in the chip 2012-12-07 02:31 but then I obviously need to plug something in above 2012-12-07 02:33 yup. a nice translator from a popular language would go a long way towards making these strange fpga critters even more approachable 2012-12-07 02:51 wpwrak: well.. i dont bother too much with the languages.. rather the hostile development env. 2012-12-07 02:51 when using fpgas is more like mcu and cpus... use an opensource-compiler like llvm or gcc and be fine, have some loader tool like avrdude... then i guess the userbase will widen dramatically 2012-12-07 02:51 s/is/are/ 2012-12-07 02:51 roh meant: "when using fpgas are more like mcu and cpus... use an opensource-compiler like llvm or gcc and be fine, have some loader tool like avrdude... then i guess the userbase will widen dramatically" 2012-12-07 02:53 i got literarly piles of develboards in access here, fpga, mcu, some dsp i guess... but most popular is the avr for me (and most others here) .. i guess only because its very easy, streamlined, uncomplicated and you know you can work on your code and hardware, and will not that likely debug your development environment 2012-12-07 02:54 that makes perfect sense 2012-12-07 02:54 but I do see all sorts of tools slowly improving, high quality open stuff 2012-12-07 02:54 i know some people who love to talk meta-compiler-theory for hours.. but that doesn solve a broken one ;) 2012-12-07 02:55 the good stuff will slowly bubble up 2012-12-07 02:55 :-) 2012-12-07 02:55 wolfspraul: i sure hope, that one day i can just install some packages and be set up to compile verilog or vhdl from a git repo into a bitstream to upload with another tool 2012-12-07 03:11 yes of course. and that's just about the special case of fpgas, I also think there is a market for nice chips right on digikey and elsewhere that are designed and manufactured in an entirely open way 2012-12-07 03:12 open design, open tools, open cell libraries, etc. so that there can be an ecosystem of chips where it's easy to customize or optimize towards use cases. 2012-12-07 03:12 sure. also i find it neccessary to be able to do full CI 2012-12-07 03:12 general-purpose fpgas of course also being an option, why not 2012-12-07 03:12 compiling, testing every revision... 2012-12-07 03:13 at least those are made and readily available in latest-gen processes 2012-12-07 03:13 (if only from altera and xilinx nowadays) 2012-12-07 03:13 i want to build a test rig for openwrt stuff soon.. we'll see if we can make it work for some series of soc... test every build 2012-12-07 03:37 panda|x201 has joined #qi-hardware 2012-12-07 03:42 guanucoluis has joined #qi-hardware 2012-12-07 04:04 DocScrutinizer05 has quit [Disconnected by services] 2012-12-07 04:04 DocScrutinizer05 has joined #qi-hardware 2012-12-07 04:31 guanucoluis has quit [Ping timeout: 240 seconds] 2012-12-07 05:05 grmbl. i hate metal fatigue combined with fragile cables. one separated neatly without any damage visible from the outside. 2012-12-07 05:13 pcercuei has quit [Quit: dodo] 2012-12-07 05:41 jekhor has joined #qi-hardware 2012-12-07 05:42 panda|x201 has quit [Remote host closed the connection] 2012-12-07 06:51 jekhor has quit [Ping timeout: 260 seconds] 2012-12-07 07:36 wolfspraul has quit [Quit: leaving] 2012-12-07 07:36 wolfspraul has joined #qi-hardware 2012-12-07 07:39 LunaVorax has joined #qi-hardware 2012-12-07 08:04 LunaVorax has quit [Ping timeout: 264 seconds] 2012-12-07 09:49 jekhor has joined #qi-hardware 2012-12-07 09:57 woakas has joined #qi-hardware 2012-12-07 10:11 wej has quit [Ping timeout: 264 seconds] 2012-12-07 10:15 wej has joined #qi-hardware 2012-12-07 10:30 DocScrutinizer05 is now known as jOERG_rw 2012-12-07 10:30 jOERG_rw is now known as jOERG_zzZZzz 2012-12-07 10:31 jOERG_zzZZzz is now known as joerg_42 2012-12-07 10:31 joerg_42 is now known as DocScrutinizer05 2012-12-07 10:41 (tantalum mark) use a decent DVM and see what residual charge you find in the component ;-) 2012-12-07 10:41 odds are that this is the correct polarization 2012-12-07 10:43 (I found residual charge in the magnitude of several volts in 'normal' electrolytic capacitors, after they ripe for literally years in a box and bever were used) 2012-12-07 10:44 never* 2012-12-07 10:45 and even after shortcircuit that charge builds up again during minutes 2012-12-07 10:45 so in a certain sense electrolytic capacitors are quite similar to batteries 2012-12-07 10:47 also: after several years of non-usage a usual electrolytic capacitor can de-format and you need to format it again, which is a process identical to charging a battery 2012-12-07 10:48 formatting building up AlOx dielectric membrane again, which seems to slowly deteriorate over the years when capacitor never is charged 2012-12-07 10:51 sorry if last statement maybe is not entirely precise, it's knowledge I acquired 1969, I still recall my dad explaining it to me. Never checked back 2012-12-07 10:56 it's just funny as for 99.999% of my factoids I don't recall the source they came from 2012-12-07 10:59 jekhor has quit [Ping timeout: 248 seconds] 2012-12-07 11:17 nerd has quit [Ping timeout: 265 seconds] 2012-12-07 11:19 nerd has joined #qi-hardware 2012-12-07 11:21 Mistah_Darcy has joined #qi-hardware 2012-12-07 11:24 MistahDarcy has quit [Ping timeout: 248 seconds] 2012-12-07 11:49 urandom__ has joined #qi-hardware 2012-12-07 11:57 DocScrutinizer05: must have been a memorable factoid :) 2012-12-07 11:57 yeah 2012-12-07 11:58 caps degenerating in such a way after long disuse could explain some equipment failures 2012-12-07 11:58 I asked him why he's keeping his "Metz mecablitz" electron flasher plugged in to mains and active for whole night 2012-12-07 11:59 dang, that been a monster 2012-12-07 11:59 like 5kg suicase with shoulder strap 2012-12-07 12:00 with electromechanical step-up circuit 2012-12-07 12:00 "wagnerscher hammer" 2012-12-07 12:00 basically a small relay buzzing all the time 2012-12-07 12:01 and alead acid battery 2012-12-07 12:02 wow. did its brightness correspond to the effort that went into making it ? 2012-12-07 12:11 yep 2012-12-07 12:12 seems impossible to find a photo of that thing nowadays 2012-12-07 12:13 anyway it had a dish reflector made of alu, with a ring shaped electron flash tube 2012-12-07 12:13 diameter of the dish some 20+ cm 2012-12-07 12:17 I loved to do all kinds of weird experiments with that flash, that's why I was very interested in what my dad was doing with it when he 'reformatted the capacitors' 2012-12-07 12:25 wpwrak: I guess I already told you about the "Balsen Keksdosen Effekt"? 2012-12-07 12:26 you can hear the photons bouncing off a thin tin lid, like found on cookie tin boxes 2012-12-07 12:27 (flash) fun :) single-use bulbs ? 2012-12-07 12:27 nah, no way 2012-12-07 12:28 (balsen) photons ? why do i sense a sudden pull on my leg ? :) 2012-12-07 12:29 >>...with a ring shaped electron flash tube 2012-12-07 12:30 I'd guess some 150Ws, on hindsight 2012-12-07 12:30 pretty powerful 2012-12-07 12:37 what's with your leg? 2012-12-07 12:38 do you know the expression "pulling someone's leg" ? 2012-12-07 12:38 nope 2012-12-07 12:38 ah :) i means that you're trying to fool someone. 2012-12-07 12:38 hah! 2012-12-07 12:39 rz2k has joined #qi-hardware 2012-12-07 12:39 do your math! a 1m^2 mirror 'feels' ~1pond force from sunlight's photons bouncing off 2012-12-07 12:40 iirc 2012-12-07 12:40 also energy on 1m^2 is ~1000W 2012-12-07 12:42 a 150Ws electron flash has an effective power of 150/10^-3 .. 150/10^-6 roughly 2012-12-07 12:44 ah, you mean the whole output of the flash. i see. yeah, that should work 2012-12-07 12:48 1pond? 2012-12-07 12:48 aka 1g 2012-12-07 12:48 though gram is not a proper force unit 2012-12-07 12:49 lekernel: a unit old people use :) 2012-12-07 12:51 btw, if you have a directional light source like a LED, does it serve as a (very weak) propulsor? 2012-12-07 12:52 LunaVorax has joined #qi-hardware 2012-12-07 12:55 why not ? anything else your little spaceship radiates could be made such that it doesn't counteract the led. 2012-12-07 12:59 photon propulsion is a long considered interstellar drive principle 2012-12-07 13:00 lekernel: maybe you can hack this one up for EHSM: http://en.wikipedia.org/wiki/Nuclear_photonic_rocket 2012-12-07 13:00 http://www.daviddarling.info/encyclopedia/P/photon_propulsion.html 2012-12-07 13:00 DocScrutinizer05: e.g., stationary lasers pushing an "unpowered" craft, as in the novel "accelerando" 2012-12-07 13:01 yeah 2012-12-07 13:03 of course, as long as our incapable scientists still fail to solve something as basic as FTL, interstellar travel will still suck ... 2012-12-07 13:04 * DocScrutinizer05 idly wonders how an externally laser propulsed(?) spaceship will *brake* when it reached its destination :-o 2012-12-07 13:05 hard impact? X-P 2012-12-07 13:06 i think in the novel they did it by ejecting the screen and have it act as a mirror 2012-12-07 13:07 haha, nice one 2012-12-07 13:08 did they consider the doppler effect though? 2012-12-07 13:10 (on detaching the screen/sail) http://en.wikipedia.org/wiki/Solar_sail#Interstellar_flight 2012-12-07 13:10 a considerable amount of the laser's energy will accelerate the mirror even further, while the light bouncing back from mirror to ship is shifted far into the red 2012-12-07 13:10 (doppler) dunno 2012-12-07 13:10 well yes, it'll be pretty inefficient 2012-12-07 13:13 you could also pick destinations with a very high escape velocity.. then slow down just enough to get caught, and gradually bleed off speed over the next few centuries. 2012-12-07 13:19 LunaVorax has quit [Ping timeout: 252 seconds] 2012-12-07 13:31 LunaVorax has joined #qi-hardware 2012-12-07 13:41 xiangfu has quit [Quit: Leaving] 2012-12-07 14:05 Hoolxi has joined #qi-hardware 2012-12-07 14:15 erikkugel has joined #qi-hardware 2012-12-07 14:16 antgreen has joined #qi-hardware 2012-12-07 14:29 arossDOTme has joined #qi-hardware 2012-12-07 14:37 arossDOTme has quit [Read error: Connection reset by peer] 2012-12-07 14:44 LunaVorax has quit [Ping timeout: 240 seconds] 2012-12-07 15:00 pcercuei has joined #qi-hardware 2012-12-07 15:04 pcercuei has quit [Ping timeout: 240 seconds] 2012-12-07 15:05 pcercuei has joined #qi-hardware 2012-12-07 15:12 jurting has quit [Quit: Leaving] 2012-12-07 15:12 jurting_pc3 has quit [Quit: leaving] 2012-12-07 15:33 LunaVorax has joined #qi-hardware 2012-12-07 15:33 Hoolxi has quit [Remote host closed the connection] 2012-12-07 15:42 LunaVorax has quit [Ping timeout: 241 seconds] 2012-12-07 16:44 Mistah_Darcy has quit [Quit: Leaving] 2012-12-07 16:56 guanucoluis has joined #qi-hardware 2012-12-07 18:08 erikkugel has left #qi-hardware [#qi-hardware] 2012-12-07 18:45 kuribas has joined #qi-hardware 2012-12-07 18:45 lekernel has quit [Read error: Connection reset by peer] 2012-12-07 18:46 jekhor has joined #qi-hardware 2012-12-07 18:49 lekernel has joined #qi-hardware 2012-12-07 19:59 pcercuei has quit [Quit: leaving] 2012-12-07 20:05 DocScrutinizer05 has quit [*.net *.split] 2012-12-07 20:05 Ornotermes has quit [*.net *.split] 2012-12-07 20:10 DocScrutinizer05 has joined #qi-hardware 2012-12-07 20:10 Ornotermes has joined #qi-hardware 2012-12-07 20:40 jurting has joined #qi-hardware 2012-12-07 20:47 LunaVorax has joined #qi-hardware 2012-12-07 21:09 LunaVorax has quit [Quit: Quitte] 2012-12-07 21:11 LunaVorax has joined #qi-hardware 2012-12-07 21:17 antgreen has quit [Remote host closed the connection] 2012-12-07 21:48 jekhor has quit [Ping timeout: 264 seconds] 2012-12-07 23:10 guanucoluis has quit [Remote host closed the connection] 2012-12-07 23:17 nerd has quit [Ping timeout: 260 seconds] 2012-12-07 23:27 kuribas has quit [Quit: ERC Version 5.3 (IRC client for Emacs)] 2012-12-07 23:31 nerd has joined #qi-hardware 2012-12-07 23:46 guanucoluis has joined #qi-hardware 2012-12-07 23:59 urandom__ has quit [Quit: Konversation terminated!]