#robotics | Logs for 2016-09-10

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[02:30:08] <Jak_o_Shadows> I should get more servo motors
[05:59:13] * z64555 snips off unnecessary wires
[06:06:23] <z64555> next up, self test, power down, and the HP filter reset...
[06:08:27] <z64555> I wonder what exactly that does
[06:08:57] <z64555> the HP filter reset, perhaps it forces the output to hi, or maybe low, to charge/discharge the HP filter's capacitor
[06:11:55] <z64555> oh, it sets the output to low, to discharge the HP cap, so it doesn't saturate
[06:12:05] <z64555> that's needed.
[06:17:45] <z64555> hm, nothing in the datasheet about the stabilization time when recovering from power-down
[06:19:07] <z64555> shame.
[06:19:15] * z64555 snips off the PD wire
[06:22:06] <Jak_o_Shadows> what are you working on?
[06:51:43] <z64555> quadrotor. IMU board.
[06:52:10] <z64555> I've only got 8 pins available to me on the i/o breakout board, which sits on top of the stellaris uC
[06:52:41] <z64555> the IMU is an older analog type, which doesn't have an integrated I2C bus
[06:58:41] <Jak_o_Shadows> ah, righto
[06:59:02] <Jak_o_Shadows> What are the stellaris like ?
[07:00:01] <z64555> LM4F120's from Texas Instruments. they're an ARM architecture
[07:00:25] <Jak_o_Shadows> They seem to have less peripherals than the stm32 that I'm using
[07:00:25] <z64555> I honestly don't have much experiance with it yet, because I need to learn how to use the IDE, which is similar to Eclipse
[07:00:36] <Jak_o_Shadows> On the other hand, the i2c module probably isn't borked
[07:01:08] <z64555> yeah, but the price was right when I got the dev board. $5
[07:01:13] <z64555> :3
[07:03:07] <z64555> I can code a driver for the IMU, no sweat. but man, that IDE...
[07:03:20] <z64555> significantly different than visual studio. lol
[07:06:52] <Jak_o_Shadows> $5 is nice :D
[07:07:20] <Jak_o_Shadows> Like the old msp430 launchpad board
[07:28:28] <z64555> Yeah, stellaris is pin-compatible with MSP430 launchpads
[12:08:11] <rue_house> that stm32 stuff is darn cheap
[12:08:36] <rue_house> I'm gonna stop at 7 boards till I work out projects to use them on
[12:32:55] <mrdata> good
[12:33:03] <veverak> :D
[14:09:27] <deshipu> working on the pony bot, need to program it
[14:09:36] <deshipu> so far I have updated micropython on it
[14:10:25] <deshipu> by the power of the greyskull castle, motivation, come!
[14:49:34] <z64555> I don't think it works like that
[14:58:17] <deshipu> and the esp8266 just died on me
[14:59:23] <z64555> rip
[15:03:11] <deshipu> flash corrupted
[15:03:28] <deshipu> now I have to solder the gpio0 cable, erase flash and flash it all anew
[15:03:47] <z64555> lovely
[15:04:38] <z64555> at least you can save it, yeah?
[15:04:49] <deshipu> yeah, if I had the motivation
[15:04:59] * deshipu lies on the chair an looks at the board
[15:05:16] * deshipu looks at the soldering iron
[15:05:27] * deshipu twiddles his thumbs
[15:10:06] <z64555> common now, it's not something to warrant questioning your life choices
[15:10:11] <z64555> :3
[15:15:09] * z64555 practices crimping dupont connectors without a crimp tool
[15:21:59] <deshipu> I always just solder them
[15:25:59] <deshipu> this thing is completely broken
[15:26:08] <z64555> :(
[15:26:44] <deshipu> I think I need to design a proper pcb
[15:27:56] <z64555> what did you try doing?
[15:33:47] <deshipu> well, I made this pcb where I mixed up some of the pins, so then I soldered the module on it using short piexes of wire, to put the right pins in the right places
[15:34:20] <deshipu> it worked for a time
[15:35:14] <deshipu> also, http://www.pighixxx.com/ is down
[15:37:48] <z64555> hm, sounds like a short
[15:40:28] <z64555> blah, I'll just use tape for the IMU
[15:48:04] <z64555> ok! IMU is plugged in
[15:52:41] * z64555 double checks the pinout
[15:52:43] * z64555 frownse
[15:53:01] <z64555> Well that's unfortunate. with this IMU, I can't use an XBEE
[16:16:43] <z64555> mkay, powerup test looks good. LED on the boar is blinking, dunno if that's the default program or if something got borked
[16:16:49] <z64555> *board
[19:26:41] <z64555> double-sided tape is a strangely good mounting fastener
[19:30:10] <deshipu> it's the best thing ever
[19:31:29] <Tom_itx> if it fails, use automotive trim tape
[19:32:05] <rue_house> sewing machine will not loop the freaking thread in the bottom
[19:32:15] <rue_house> if I have anything in it to be sewn, it wont catch
[19:32:22] <Tom_itx> throw sticks at it
[19:32:37] <Tom_itx> maybe you threaded it wrong
[19:32:43] <z64555> any idea why it don't?
[19:32:56] <rue_house> I'm just trying to do a simple test, I'm not even trying to do the mecha tendon yet
[19:33:07] <rue_house> http://www.singerco.com/uploads/download/448_5_6_8_10_slide.pdf
[19:33:14] <rue_house> its an official manual and its horrid
[19:33:35] <rue_house> who decided 20dpi was a good rez for imageS?
[19:33:41] <Tom_itx> looks just like the brothers we have
[19:33:48] <Tom_itx> as far as thread path
[19:33:54] <z64555> "As the owner of a new Singer sewing machine, you are about to begin an exciting adventure in creativity"
[19:33:58] * z64555 cringes
[19:34:50] <rue_house> I cant be 100% on the thread path at the needle, cause of the 20dpi iamges
[19:35:26] <rue_house> you would think singer would have the best docs in existance by now
[19:35:33] <rue_house> they been doing it for what, 300 years?
[19:36:18] <z64555> aparently they thought they could skimp out because of that.
[19:38:24] <deshipu> isn't singer an usa company?
[19:39:01] <Tom_itx> we have for the most part sold our souls to china
[19:39:21] <deshipu> 300 years would be like 10x more than the oldest things they have in the museums there
[19:39:43] <deshipu> the house I live in is older than the whole country
[19:40:24] <rue_house> maybe they used newprint to insulate the walls and you have a fortune waiting for you that you just dont know about
[19:40:37] <rue_house> newsprint
[21:09:29] <Jak_o_Shadows> https://cdn.hackaday.io/images/9754291472923566463.png is a very similar leg design to what my quadrapod may have
[21:09:37] <Jak_o_Shadows> (https://hackaday.io/project/8843-mr-runner)
[21:42:21] <rue_house> something seems wrong about that design
[23:33:35] <z64555> looks like cheetah legs
[23:34:11] <Jak_o_Shadows1> Yeah.
[23:34:46] <Jak_o_Shadows1> FOUND IT! My main inspiration for the toroso: https://www.youtube.com/watch?v=hMn99bd-G-E
[23:35:02] <z64555> something that has a pair of missile banks on it?
[23:35:41] <Jak_o_Shadows1> Huh?
[23:41:35] <Jak_o_Shadows1> The head being another stewart platform is cute, hadn't thought of that
[23:53:00] <Jak_o_Shadows1> which is silly, considering a stewart platform neck is the first time i've ever heard of a stewart platform