#qi-hardware IRC log for Tuesday, 2012-10-30

rohwpwrak: heh02:17
rohits nice when weird things suddenly make sense?02:17
roheh. s/?/.02:18
wpwrakoh yes. i was getting worried about the health of my scope. of course, all the things still looked reasonable when working on something that's somehow grounded. only battery-powered devices made no sense.02:42
wpwrakand of course, with the ground wires of _both_ probes broken, all the "swap probe/channel", "connect more ground", etc. tests didn't yield anything either. pretty nasty.02:44
panda|zxiangfu: good afternoon04:45
Action: xiangfu First PCB etching: http://downloads.openmobilefree.net/tmp/pcb-etching.jpg06:22
xiangfuit have problem on the ftg256 pad. 06:23
xiangfubbl06:24
whitequarkwpwrak: I guess it was looking like a capacitive coupling? you'd only see AC, probably in a quite distorted form?07:08
qi-botThe build was successful: http://fidelio.qi-hardware.com/~xiangfu/build-nanonote/openwrt-xburst.full_system-20121029-0000 07:12
wpwrakxiangfu: not to bad. a few more tries and you'll be able to make non-BGA boards with that process. the main problem seem to be temperature variations. are you using an iron for the toner transfer process ? or a laminator ?11:18
wpwrakwhitequark: mainly lots and lots of noise. plus, yes, DC just vanished. that is, if the circuit wasn't grounded via some other means, e.g., by USB->PC->mains ground->scope. that "only" messed up the signal a bit.11:24
whitequarklekernel__: ping21:15
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