**** BEGIN LOGGING AT Sun Oct 07 02:59:58 2012 Oct 07 03:23:58 hi emeb_mac Oct 07 03:24:08 Hi Oct 07 03:24:21 so how goes the FPGA caping? Oct 07 03:24:51 Sent one of the boards off to ka6sox this morning, ordered remaining parts last night. Oct 07 03:25:19 probably spend some time building it next weekend. Oct 07 03:25:40 Need to get caught up on what the latest thing is for Beaglebone OS. Oct 07 03:26:05 I'm used to using Angstrom, but I haven't followed closely and it looks like there have been a lot of kernel changes lately. Oct 07 03:27:08 So I need to make sure I know how to get all the drivers I need running before I can test out the FPGA. Oct 07 03:27:28 (need spidev & I2C access from userspace) Oct 07 03:27:41 so what is the BOM cost if you don't mind saying Oct 07 03:28:13 That's a 4-layer board. I had it fabbed @ OSHPark and it runs about $24 for the bare PCB. Oct 07 03:28:37 heh Oct 07 03:28:40 The electrical components probably add another $30-40. Oct 07 03:28:55 really needed 4 layers? Oct 07 03:29:09 If someone were to build these in qty they would likely cost about $50 retail. Oct 07 03:29:25 ok not too bad Oct 07 03:29:44 you plan on selling it retail? :) Oct 07 03:29:55 Not personally. Oct 07 03:30:13 I have talked with someone about it, but things are moving slowly on that front. Oct 07 03:30:34 heh i am using 1% on my UPS Oct 07 03:30:58 sorry - what? Oct 07 03:31:58 oh nothing i figured all the ARM boards i have hanging off that would use more power :) Oct 07 03:32:14 re - your earlier question about layers. No, it could fit on 2, but it's a lot cleaner w/ 4. Oct 07 03:32:35 and OSHPark's pricing for 4-layer is not bad at all. Oct 07 03:33:10 Ah - UPS is measuring your power drain. Oct 07 03:33:42 morning Oct 07 03:35:16 the GPMC code I've seen has a lot of NAND ecc junk we don't need Oct 07 03:36:08 Overboard with it! Oct 07 03:37:40 * mranostay stalks ka6sox's mailbox Oct 07 03:38:11 good thing I have a locked mailbox :D Oct 07 03:38:28 yeah about those locks they suck :) Oct 07 03:38:45 yup Oct 07 03:39:41 i've jammed pocketknives in them before Oct 07 03:39:55 well not mailboxs and they have opened Oct 07 03:40:01 yup Oct 07 03:40:24 I think I have the latest BOM and will get parts monday Oct 07 03:40:47 ka6sox: that looks like some detailed soldering to do Oct 07 03:41:02 mranostay, I've done worse Oct 07 03:41:47 pretty sure this is 0.5mm Oct 07 03:42:18 I'm probably going to oven the top side and solder the bottom Oct 07 03:47:23 Yeah - FPGA is 0.5mm. I've done 'em by hand before. Oct 07 03:47:34 the backside caps are easy to do by hand though Oct 07 03:48:13 I have paste...so I'll toothpick it. Oct 07 03:48:52 I've done vqfp64's before...this is 100pin of same... Oct 07 03:52:00 don't use the toothpick afterwards :P Oct 07 03:52:06 har Oct 07 03:52:36 heh Oct 07 03:53:10 what I need it a wooden stick to nail down the fPGA...it will "float" Oct 07 03:53:52 of course i think soldering in poorly vented apartment isn't much better Oct 07 03:54:03 right Oct 07 03:54:56 eh - could be worse. You don't need much solder for these boards. If you generate fumes you're using too much. Oct 07 03:55:07 yup Oct 07 03:55:18 this is much easier than QFN parts Oct 07 03:56:03 ka6sox: the xtal osc on this board is one of those ceramic things with 4-pins. Kind of a low-end QFN. Oct 07 03:56:31 I haven't had any issues soldering those. Oct 07 03:57:16 I did a controller for RepRap and that used QFN and a resonator that had those 4 pins...never an issue Oct 07 03:57:19 but it's got no center pad like most QFN do. That gets tough. Oct 07 03:57:32 that center pad was a nightmare Oct 07 03:57:39 def need to reflow those. Oct 07 03:57:54 thats what I will do with this board too. Oct 07 03:58:01 longer to setup, easier to get right Oct 07 03:58:56 * mranostay attempts to grok c++ Oct 07 03:59:09 * ka6sox gave up and went back to VHDL Oct 07 03:59:58 baroo? two very different application spaces. Oct 07 04:03:01 * emeb_mac ponders getting a hoof tip for his hakko 936 to do the "blob-drag" technique. Oct 07 04:03:15 that tip is "da bomb".... Oct 07 04:03:27 Oh? Oct 07 04:05:35 ok time to switch to my other vice beer Oct 07 04:06:03 I've used it..works nice Oct 07 04:06:40 this look about right? http://www.frys.com/product/250157?site=sr:SEARCH:MAIN_RSLT_PG Oct 07 04:07:13 that is a 1/8" right Oct 07 04:07:17 (looks like it to me) Oct 07 04:08:23 not sure - checking. Oct 07 04:11:13 for $5 I'll swing by and get one tomorrow. Oct 07 04:11:29 looks like about 1/8" Oct 07 04:13:26 need to get some liquid flux too. Video demos I've seen of that use a _lot_ Oct 07 04:22:48 liberally Oct 07 04:23:07 get water soluable though Oct 07 04:23:18 that way its only HOT water to clean up. Oct 07 04:30:57 ka6sox: another chemical that is just great for you :) Oct 07 04:31:57 rosin? Oct 07 04:32:34 yeah Oct 07 04:34:01 I've make it this far....... Oct 07 04:34:59 rosin is natural - comes from pine trees! Oct 07 04:35:14 yup Oct 07 04:35:34 it's natural! Oct 07 04:35:39 famous last words :) Oct 07 04:37:54 black widow spiders and rattlesnakes are natural too. Don't make 'em good for you. Oct 07 04:38:05 but rattlesnakes are yummy. Oct 07 04:39:25 heh Oct 07 04:40:08 tastes like chicken... Oct 07 04:40:52 emeb_mac: where do you live? :) Oct 07 04:41:09 Arizona Oct 07 04:44:20 http://instagram.com/p/KlCM1FpIC7/ <- a few months ago Oct 07 04:47:07 nice camo... Oct 07 04:49:06 * mranostay looks for the nearest superfund site Oct 07 04:57:19 mranostay, dumping a corpse? Oct 07 05:05:05 trelane: need an above average background radation Oct 07 05:10:13 emeb_mac, 6' or so? Oct 07 05:10:52 ka6sox: probably a bit shorter. Hard to tell because I didn't see him uncoil Oct 07 05:11:45 I got cornered by one about that big in a building last winter Oct 07 05:11:58 stepped over him Oct 07 05:12:05 fun times Oct 07 05:12:17 the phone was beyond him Oct 07 05:12:24 and I left my cellphone in the car Oct 07 05:12:52 so I had to send an email on the encoder computer to the client... Oct 07 05:13:08 heh Oct 07 05:13:09 "help! I'm being held captive by a 6' rattlesnake" Oct 07 05:13:19 his Outlook cut it off at: Oct 07 05:13:31 "help! I'm being held captive by a 6' rat Oct 07 05:13:36 hehe Oct 07 05:13:41 * emeb_mac remembers that day Oct 07 05:13:54 that was an "interesting" day... Oct 07 05:15:58 I'll bet folks w/ electric cars in CA are smirking these days Oct 07 05:16:58 4.89 tonight Oct 07 05:17:36 yeah i noticed Oct 07 05:17:39 oil companies: "your wallet looks a little heavy - let me help you with that..." Oct 07 05:17:43 $25 for a half a tank.. Oct 07 05:17:55 i drive a compact even Oct 07 05:18:25 * emeb_mac is used to seeing those prices along I-5 around Dunsmuir, but nowhere else. Oct 07 05:18:39 the real solution is RTG cars :P Oct 07 05:18:58 that would open up a market for your product! Oct 07 05:19:05 heh Oct 07 05:19:22 new meter on the dashboard Oct 07 05:19:46 or a "check core" light Oct 07 05:20:25 need a sample of Geordi Laforge shouting something about a core breach. Oct 07 05:20:32 mranostay, I saw a good RTG in a muesum here Oct 07 05:21:01 hopefully decommissioned Oct 07 05:21:16 barely... Oct 07 05:21:29 it was part of Rocketdyne Oct 07 05:21:34 heh Oct 07 05:22:10 every time i hear of them i think --> http://toxipedia.org/display/toxipedia/Rocketdyne Oct 07 05:22:37 that's it - cars powered by NERVA engines. Oct 07 05:23:03 hazmat team called out for major wrecks? :) Oct 07 05:23:26 yep Oct 07 05:24:02 remember when hybrids first started to show up - fire/rescue crews were worried about HV, battery chemicals, etc. Oct 07 05:50:32 why does every G+ mobile photo uploaded have "edited" on it Oct 07 06:49:48 <_av500_> mranostay: edited by google Oct 07 06:49:53 <_av500_> to remove indecency Oct 07 06:55:19 all of mranostay 's pix are indecent? Oct 07 10:27:40 ka6sox-away: have a look at https://github.com/beagleboard/kernel/tree/beaglebone-3.6 or https://github.com/beagleboard/kernel/tree/3.7 to see a cleaner version of gpmc Oct 07 10:27:50 ka6sox-away: that is going to be the supported bone kernel soon: mainline Oct 07 15:26:18 Hello, I would to know what is the default mode of expansion header P8 and P9 of the BeagleBone, I searched on the Reference Manual but I didn't found it. It seems Mode3 but I'm not sure, Can anyone help me? **** ENDING LOGGING AT Mon Oct 08 02:59:58 2012