#robotics | Logs for 2016-01-16

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[04:12:54] <rue_house> I suppose if I'v designed my power supply to only drive the fets to 50% duty
[04:13:15] <rue_house> I can use a bootstrapped N channel driver
[04:13:34] <rue_house> no, then the drive signal ends up in the output...
[08:37:23] <robotustra> http://55.media.tumblr.com/993618ac8e6fe213212696eb1f06883d/tumblr_inline_o0rkrhF2O31raprkq_500.gif
[08:45:27] <Snert> that's one freaky cat
[08:46:52] <robotustra> good morning https://www.youtube.com/watch?v=NHxmPtTSx5w
[11:48:12] <rue_house> I wonder what I can get the saturation voltage of a PNP down to
[12:05:48] <rue_shop3> it looks like I should lower the drive votlage for the fet
[15:12:05] <ace4016> if anyone wants to make a fast quadraped, this is decent source material: http://imgur.com/gallery/h0PvocR :P
[15:30:20] <SpeedEvil> https://www.youtube.com/watch?v=fe4fyhzS3UM or
[15:42:41] <ace4016> hehe
[18:59:26] <moon_> hay RUE
[18:59:36] <moon_> IM on a PowerPC
[18:59:39] <moon_> :P
[18:59:45] <DagoRed> nice!
[19:00:17] <DagoRed> moon_: I'm assuming an old mac?
[19:34:30] <moon_> Yup
[19:34:40] <moon_> g4
[19:34:42] <moon_> :P
[19:35:07] <moon_> its got some wierd registers that show up in gdb
[19:49:32] <DagoRed> moon_: fun, those things can be a pain.
[19:53:40] <moon_> Macs really???
[19:53:44] <moon_> (sarcasm)
[20:02:20] <DagoRed> when running a PPC anymore... yeah.
[20:03:20] <moon_> how bout booting a kernel on a motorola 68k ;)
[20:03:42] <DagoRed> that is a different beast all together.
[20:06:30] <moon_> yeah :)
[20:24:07] <rue_house> moon_, hey
[20:24:30] <rue_house> how did you find IRC for a powerpc??
[20:43:18] <robotustra> bmx055 is shit
[20:43:19] <Jak_o_Shadows> Argh. Stewart Platform fk: Using the same approach I did for the slide pot method, but with rotary pots, I am getting ever increasing lengths
[20:43:31] <robotustra> at least the sensor I have
[20:44:02] <robotustra> i2c stuck in 20-40 min
[20:45:03] <robotustra> need to debug it deeply
[20:45:43] <robotustra> it's inpossible to touch SDA with osciloscope because it suspend the reading
[20:45:53] <Jak_o_Shadows> Time to rethink things I think. Or actually, I'm not sure the problem is actually solvable
[20:47:55] <Jak_o_Shadows> Barring physically simulating it with a physics engine perhaps
[22:42:08] <Anniepoo_> I have a rotary encoder. It's got an 8 pin SMT chip on it, can't read the number off it. Beside it on the board it says B83609
[22:43:11] <Anniepoo_> few resistors, and the transmission type optical coupler for the chopper wheel.
[22:43:25] <Anniepoo_> I'm wondering what the chip is.
[22:47:52] <Anniepoo_> got it.
[23:14:39] <Anniepoo_> it's an LM393