2011-10-13 02:47 [commit] Xiangfu Liu: new package: gtypist a universal typing tutor (master) http://qi-hw.com/p/openwrt-packages/d7402ee 2011-10-13 03:06 I am using openwrt in the console.Â Â relative newbie to linux.Â Â How do I tell which keymap is being used?Â Â I am trying to get a backquote into the keymap. 2011-10-13 03:11 qwebirc53148, by default it QWERT as the keyboard shows. 2011-10-13 03:12 qwebirc53148, you can use 'dumpkeys' and 'setkeycodes' to change some keys. 2011-10-13 03:12 qwebirc53148, or 'loadkeys' maybe. 2011-10-13 03:16 qwebirc53148, you can install 'kbd-console-maps' for get more keymaps 2011-10-13 03:18 thanks 2011-10-13 03:26 [commit] Xiangfu Liu: config.full_system: include kbd-console-maps (master) http://qi-hw.com/p/openwrt-packages/ca0b3b5 2011-10-13 03:50 A week ago the login page gave me an option to pick a nickname.Â Â Now I am just assigned one (qwebirc53148???).Â Â Is it possible to get back to choosing one myself?Â Â Sorry for off topic.Â Â Thanks for any hints./ 2011-10-13 04:04 qwebirc53148, /nick NAME (http://freenode.net/faq.shtml#nicksetup) 2011-10-13 04:20 xiangfu, thanks again 2011-10-13 06:07 after over 2 years, NanoNote support has arrived in u-boot upstream! 2011-10-13 06:07 http://lists.denx.de/pipermail/u-boot/2011-October/105044.html 2011-10-13 06:08 congrats xiangfu! 2011-10-13 06:08 I think 2 drivers are still missing (lcm + mmc), but the first big step is made and the diff and maintenance overhead for upleveling u-boot will go down a lot 2011-10-13 06:09 that's 'just' the bootloader, but any diff we get upstream makes me worry a little less about our ability to make cool new devices 2011-10-13 09:10 [commit] Xiangfu Liu: frotz: remove license problem games (master) http://qi-hw.com/p/openwrt-packages/b013154 2011-10-13 13:22 [commit] Xiangfu Liu: some BROKEN packages, maybe somebody can continue work on those package (master) http://qi-hw.com/p/openwrt-packages/3e5e716 2011-10-13 14:09 [commit] Werner Almesberger: m1rc3/norruption/2/collda: corrected $n to be the number of standby failures (master) http://qi-hw.com/p/wernermisc/86e86dc 2011-10-13 14:09 [commit] Werner Almesberger: m1rc3/norruption/2/plot-cdf: start empirical distribution at (0, 0) (master) http://qi-hw.com/p/wernermisc/9b2f2d1 2011-10-13 14:09 [commit] Werner Almesberger: m1rc3/norruption/2/aloop: lock the NOR again after restoring standby (master) http://qi-hw.com/p/wernermisc/88bf6b7 2011-10-13 14:54 [commit] Xiangfu Liu: new package: SDL-widgets: a GUI toolkit on top of the SDL libraries (master) http://qi-hw.com/p/openwrt-packages/1b3135c 2011-10-13 14:57 whee ! now let the widgetry begin ! ;-) 2011-10-13 15:10 ncie ! 2011-10-13 15:51 yay! my components for lvds-board have arrived 2011-10-13 15:51 I'm about to coin a new term, "yo dawg syndrome". 2011-10-13 15:53 DigiKey have sent me a polyethyelene packet, inside there is a polyether antistatic/moisture package (which is absolutely unopenable), inside is a polyethylene package, inside is a polyethylene package, have I said that inside is a polyethylene package? And inside is a chunk of tape, and finally there is an IC. 2011-10-13 15:54 and they've sent each IC in its own polyether package 2011-10-13 15:54 for some reason only known to them 2011-10-13 15:54 a package fetish maybe. 2011-10-13 22:15 oh. trying to solder some TSSOPs and WSONs revealed a fun fact: I suck at soldering :/ 2011-10-13 22:15 (also: there is never enough flux) 2011-10-13 22:39 actually: no, I don't. also: I will pray for the inventor of Flux-Off for the rest of my life. 2011-10-13 22:39 if there are still some remaining small sticky solder spheres, you've not used enough of it. 2011-10-13 23:00 what type of flux do you use ? 2011-10-13 23:01 why doesn't your ultrasound cleaner get rid of it nicely enough ? 2011-10-13 23:06 wpwrak: RMA 2011-10-13 23:07 I've understood several important things, namely: 2011-10-13 23:07 flux, flux-off, pre-heating and ultrasonic cleaning are like violence. if they don't solve some of your problems, you are not using them enough 2011-10-13 23:08 ;-)) 2011-10-13 23:08 finally, I've got some sense out of this f***king board 2011-10-13 23:08 it was not SO bad 2011-10-13 23:08 that was just a whole lot of solder paste remains 2011-10-13 23:09 they looked awful 2011-10-13 23:09 i would go easy on the pre-heating, though. i've had some bad experiences with having too much heat around. 2011-10-13 23:09 hmm, if you solder manually, you should need solder paste over in very few situations. e.g., for crystals. 2011-10-13 23:09 hm 2011-10-13 23:09 do I? 2011-10-13 23:10 I've just poured it on every shining area and plucked the components on it 2011-10-13 23:10 also, flux 2011-10-13 23:10 also, for the flux, RMA is good but also very dirty. you may find "water soluble" more convenient. 2011-10-13 23:10 solder paste should already include enough flux. 2011-10-13 23:10 (rma) flux-off gets rid of it COMPLETELY. the board is not sticky at all and it is clear like a mirror 2011-10-13 23:11 (solder paste) I use a Russian product. 2011-10-13 23:11 it does not. 2011-10-13 23:11 (rma) yes, but it's sticky while you're working on it :) 2011-10-13 23:11 (rma) I don't care much about that. I can always use more flux-off :D 2011-10-13 23:11 are you sure your solder paste is for electronics ? ;-) 2011-10-13 23:11 yep 2011-10-13 23:11 that's written on it 2011-10-13 23:11 maybe they confused the label :) 2011-10-13 23:12 solder paste without flux doesn't make sense :) 2011-10-13 23:12 nope. it's just done in a very Soviet way 2011-10-13 23:12 it has _some_ flux 2011-10-13 23:12 aha ! 2011-10-13 23:12 and I guess not the best kind of it 2011-10-13 23:12 maybe, worst 2011-10-13 23:12 and it tends to split itself into layers 2011-10-13 23:13 maybe they thought the formula they used to fix ships will do for chips, too ... 2011-10-13 23:13 you're not very far from the truth 2011-10-13 23:13 (solder paste) what's your way of soldering things like tssop48 or 0603 caps? 2011-10-13 23:14 or resistors 2011-10-13 23:14 i think you may be better off with just flux and regular solder (preferably 63/37) 2011-10-13 23:14 the paste is 63/37, btw 2011-10-13 23:15 I guess it's done from the same materials that regular solder with rosin core is 2011-10-13 23:15 it's not very good either 2011-10-13 23:15 promises he will never be too greedy and save on solder. NEVER. 2011-10-13 23:15 0402 and bigger: pre-tin the pads (options, but it helps. i do this one the whole board, before soldering any components). apply "water soluble" flux to the pads. place the component. hold it down with angled tweezers. touch a tiny drop of solder on one end. then on the other. 2011-10-13 23:16 s/options/optional/ 2011-10-13 23:16 I've tried that method 2011-10-13 23:17 the results are not that different. some things are better, some are worse 2011-10-13 23:17 i haven't done tssop yet. ssop yes. there, i pre-tin (again, optional), apply a generous amount of flux on all the pads, place the component, hold it down, solder one or two pins (okay if they're bridged) 2011-10-13 23:17 ssop is easy as a pie 2011-10-13 23:17 ok :) 2011-10-13 23:17 tssop is not very hard too, as it turns out -- just get something to remove the remaining balls 2011-10-13 23:18 but I have a hirose connector on the board 2011-10-13 23:18 yup. flux and heat. repeat. if it's still messy, flux and solder. 2011-10-13 23:18 that connector will melt immediately if heated from the component side 2011-10-13 23:18 lovely ;-) 2011-10-13 23:18 so I've sit there for 15 minutes and heated the board from underneath it 2011-10-13 23:18 boring as hell, but it works 2011-10-13 23:18 ... I hope 2011-10-13 23:19 at least it has kinda the same shape 2011-10-13 23:19 maybe not exactly :D 2011-10-13 23:19 that's what I've called "pre-heating" 2011-10-13 23:20 I only have a SMD rework hot air gun, and no other smd-rework-related tools. so it's the only option to heat the whole board 2011-10-13 23:20 it's thick. and I forgot the thermal relief pads, as I've said 2011-10-13 23:21 maybe pick a through-hole connector the next time, if possible 2011-10-13 23:21 that hirose stuff is a pain. it is rare, it cannot be identified when on board, and prior to this day, I've never managed to (de)solder it successfully 2011-10-13 23:21 that's not possible 2011-10-13 23:22 mmh. then it's messy. did you pre-tin the pads/traces around the connector ? 2011-10-13 23:22 hm 2011-10-13 23:22 second time, yes 2011-10-13 23:25 The build has FAILED, see log here: http://fidelio.qi-hardware.com/~xiangfu/compile-log/openwrt-xburst.full_system-10122011-2220/ 2011-10-13 23:27 I've got some images of the result 2011-10-13 23:28 http://imgur.com/a/iYQMo 2011-10-13 23:29 darn. my hands are trembling :/ 2011-10-13 23:31 hmm, i think the #1 problem with the smt connector may have been the big ground plane and its numerous direct connections to it. 2011-10-13 23:31 anyway, does it work ? :) 2011-10-13 23:31 dunno 2011-10-13 23:31 I don't have a host board 2011-10-13 23:31 ;-)) 2011-10-13 23:32 so you're doing this just for the art. nice ;-) 2011-10-13 23:32 nope 2011-10-13 23:32 my friend, who wants this board, has it 2011-10-13 23:33 this one: http://starterkit.ru/html/index.php?name=shop&op=view&id=49 2011-10-13 23:34 the board itself is an, ahem 2011-10-13 23:34 I don't even know how to call that 2011-10-13 23:34 it consumes something like 2 to 4A by 3.3V 2011-10-13 23:34 and it is supposed to be powered by 5V 2011-10-13 23:34 and what is the role of your thingy ? 2011-10-13 23:34 guess what: they've put an LDO on it. 2011-10-13 23:34 to make 3.3 from 5V 2011-10-13 23:35 aah, level shifters 2011-10-13 23:35 nope 2011-10-13 23:35 it is POWERED through an LDO. 2011-10-13 23:35 it gets to full 125 deg. C while the board is idling 2011-10-13 23:35 it heats even more when it calculates something 2011-10-13 23:35 and pcb under it gets black soon 2011-10-13 23:35 we've mailed the vendor 2011-10-13 23:36 he said: it is normal condition (sic!) 2011-10-13 23:36 lovely ;-) 2011-10-13 23:36 I, well 2011-10-13 23:36 I don't have any words for it. 2011-10-13 23:36 now i know why you need military-grade solder ;-) 2011-10-13 23:36 my board isn't something like that 2011-10-13 23:37 I at least know that buck converters do really exist in this world 2011-10-13 23:37 but they're more expensive ;-) 2011-10-13 23:38 yeah, extra $5 for a step-down on a $150 devboard is something unbearable 2011-10-13 23:38 let's make some ARM toasts instead 2011-10-13 23:39 also: they frequently do not solder some passive components on the board 2011-10-13 23:39 each time some other ones 2011-10-13 23:39 saying: "we don't have enough ones" 2011-10-13 23:40 nice :) russian design is famous for its rugged robustness. i think they make good use of it ;-) 2011-10-13 23:40 there's an Atmel ARM 2011-10-13 23:41 on the other hand, the very same friend once (I don't know if that was an experiment or he has just missed the voltage. I fear that it's the latter) powered an ATmega8 with 12V 2011-10-13 23:41 for like a month, continously 2011-10-13 23:41 it worked. 2011-10-13 23:41 MCUs are tough 2011-10-13 23:41 I guess Atmel has a whole lot of Russian engineers 2011-10-13 23:42 to make their products Russian-proof 2011-10-13 23:42 (my board) it gets TFT video signal on 40 pin side and outputs an LVDS for one particular notebook LCD on the hirose side 2011-10-13 23:42 aah, that's why you need that connector 2011-10-13 23:43 yep 2011-10-13 23:43 maybe try to find a 90 deg version if you need something similar in the future. should be easier to solder. 2011-10-13 23:43 luckily, we found a leaked datasheet on the motherboard 2011-10-13 23:43 it had a partnumber 2011-10-13 23:43 in any other case, I doubt we would be ever able to find the right mating one 2011-10-13 23:44 hirose are professionals of vendor lock-in 2011-10-13 23:44 no, not DigiKey nor Hirose site contain any references to 90deg version 2011-10-13 23:45 I think this particular connector was developed specially for this particular notebook series 2011-10-13 23:45 nice :) 2011-10-13 23:45 *specifically, or maybe not 2011-10-13 23:45 connectors are generally messy. very often, there's poor documentation 2011-10-13 23:46 hirose has nice datasheets, but if you only have a part on your hands, it's impossible to figure out which one it is 2011-10-13 23:47 each notebook vendor has its own variant of that LVDS connector, almost entirely like any other, but not enough to be pluggable 2011-10-13 23:47 and they like to play with the pinout, too 2011-10-13 23:48 and with the order of bits inside of the LVDS stream 2011-10-13 23:48 without any reason (except the lock-in) whatsoever 2011-10-13 23:49 I just realized that I can test the buck 2011-10-13 23:49 let's see if it will explode 2011-10-13 23:50 *the buck converter 2011-10-13 23:55 it did not 2011-10-13 23:55 does not work, either 2011-10-13 23:57 hm. 2011-10-13 23:58 either I am hallucinating, or I have a voltage of 0.4V between different points of ground plane 2011-10-13 23:59 ah, of course it does not work 2011-10-13 23:59 it is not soldered to the board.