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[01:52:45] <goppo> hi
[01:54:56] <goppo> i have a laser pointer on a handle grip and i'm trying to keep the laser pointer's yaw direction. so i have the laser pointer on a stepper motor but what's a good way for maintaining its direction?
[01:55:20] <goppo> could i simply turn the shaft according to the yaw readings or is control theory needed?
[02:05:30] <rue_shop2> just 1 axis?
[02:05:47] <rue_shop2> with what kinda resolution?
[02:09:16] <goppo> rue_house: yeah, just 1 axis
[02:09:22] <goppo> rue_shop2: ^
[02:09:27] <rue_shop2> resolution?
[02:09:40] <rue_shop2> within 1.8 degrees?
[02:09:53] <goppo> rue_shop2: my stepper makes 4096 steps per rev
[02:10:13] <goppo> hmm what's a typically acceptable resolution?
[02:10:14] <rue_shop2> ok
[02:10:19] <rue_shop2> dunno
[02:10:24] <rue_shop2> its your project
[02:10:37] <rue_shop2> where am I gonna put the new saw I made/
[02:10:38] <rue_shop2> ?
[02:10:41] <goppo> sure. i guess ~1 deg will be fine
[02:11:05] <rue_shop2> well I know a trick that would work well with an optical encoder
[02:11:14] <rue_shop2> do you have budget for one?
[02:11:19] <goppo> could the shaft just be turned instantaneously according to the gyro's readings
[02:11:42] <goppo> rue_shop2: hmm no, not really
[02:12:09] <rue_shop2> well, you could do a trick with some optical interrupters
[02:12:13] <goppo> i wonder if turning instantaneously would be too jerky
[02:12:15] <rue_shop2> but the angle range would be limited
[02:12:50] <goppo> does something like this need PID though?
[02:13:04] <rue_shop2> probably not
[02:13:48] <goppo> right
[02:16:45] <rue_shop2> what angle range do you need it to work over
[02:16:49] <rue_shop2> 45 degrees?
[03:28:11] <Triffid_Hunter> goppo: just hook it directly, see what it does.. if it tries to move too fast and stalls, you know you need something slightly more complex
[03:28:31] <rue_house> hey
[03:28:52] <rue_house> http://ruemohr.org/~ircjunk/images/scrollsaw.jpg
[03:29:00] <rue_house> built a stand for the 'new' saw I got!
[05:56:34] <pokmo> anyone know of any budget high speed stepper with decent torque?
[05:57:00] <deshipu> haha
[05:57:13] <Triffid_Hunter> pokmo: 17HS8401?
[06:14:33] <pokmo> Triffid_Hunter: i'll check that out. thanks
[06:29:34] <goppo> aren't all brushless motors steppers?
[06:30:35] <deshipu> no
[06:30:43] <deshipu> but all steppers are brushless
[06:31:44] <goppo> but aren't brushless controlled the same way as steppers, i.e. triggering one phase at a time?
[06:37:55] <deshipu> not necessarily one
[06:38:26] <deshipu> the difference is not in the theory of operation, though, but the intended use
[06:39:06] <goppo> deshipu: right. but if the operation is the same, why would the use be different?
[06:40:06] <deshipu> because in practice you have to deal with such small details as reality
[06:41:35] <deshipu> brushless motors are designed for much higher speeds, have fewer "steps", lower precission, etc.
[06:42:23] <goppo> right
[06:45:30] <Jak_o_Shadows> the number of steps is the main thing isn't it?
[06:45:46] <deshipu> and the fact that it's not supposed to stop
[06:45:48] <Jak_o_Shadows> Like, you actuate each in a similar way, but brushless motors have less of the step things inside
[06:45:51] <deshipu> not often
[06:45:51] <Jak_o_Shadows> well, yeah.
[06:45:55] <deshipu> or change directions
[11:17:43] <rue_house> most brushless motors are 3 phase
[11:17:54] <rue_house> most steppers are 2, 4, 5 phase
[11:53:17] <rue_house> gee, would it ever be nice to go out and sit in the sun
[11:53:25] <rue_house> all I need is SUN
[11:55:16] <SpeedEvil> or a 8km high pressurised chair
[12:00:05] <deshipu> where would you get a free sun
[12:00:16] <deshipu> I'm afraid the nearest one is in use
[12:39:16] <goppo> hi
[14:20:00] <rue_house> hahahah I backgrounded less'ing a file again
[17:57:02] <nevodka> I'm looking for a new programmable drone, does anyone have any suggestions
[17:58:39] <nevodka> I don't know if that's too ambitious for a beginner
[17:59:36] <nevodka> I'm just trying to do something with CV
[18:10:22] <i-make-robots> hey rue! good to see you at VMMF.
[18:10:59] <i-make-robots> rue_house rue_shop2 here's some links I mentioned.
[18:11:04] <i-make-robots> http://www.innerbreed.co.uk/
[18:11:10] <i-make-robots> http://www.robotshop.com/forum/control-cables-and-sheaths-t9202
[18:36:25] <rue_shop3> Tom_itx,
[18:36:43] <rue_shop3> in the process of changing a failing hard drive in a computer you notice some of the caps are bad
[18:37:02] <rue_shop3> after changing the harddrive, you confirm that everything still works ok
[18:37:08] <rue_shop3> do you then
[18:37:12] <rue_shop3> a) change the caps
[18:37:30] <rue_shop3> b) leave it the **** alone till it actually starts to act up
[18:38:10] <rue_shop3> I'm leaning towards b
[18:38:27] <anonnumberanon> change the board's traces man, you have no choice it will only help you in the long fun
[18:43:55] <orlock> rue_shop3: b. - these days,k unless theres a specific requirement to be using that specific bit of hardware, a new system is usually more cost effective long-term
[18:44:51] <rue_shop3> anonnumberanon, replace them all with wire-wrap wire?
[18:45:59] <anonnumberanon> rue_shop3, yes, as long as that has less impedance than the traces
[18:46:15] * anonnumberanon expects to see trace impedance measurements
[18:46:23] <nevodka> does this channel have a wiki?
[18:46:56] <rue_shop3> if a wiki is akin to being organized, no
[18:47:19] <rue_shop3> tho I tried to get a page togethor for #avr and nobody co-operated
[18:47:24] <nevodka> oh well
[18:47:41] <rue_shop3> nevodka, I hear by task you with finding a wiki site for #robotics
[18:47:49] <nevodka> :[
[18:47:53] <rue_shop3> you have 3 days, if you fail, you will be terminated.
[18:47:57] <rue_shop3> thankyou.
[18:48:08] <anonnumberanon> couldn't you find him an easier task to start with? he seems soft
[18:48:38] <rue_shop3> the harder you smack the soft ones the faster they scale
[18:49:58] <rue_shop3> nevodka, you have 4315 minutes remaining.
[18:51:00] <orlock> eh apparently my new mount uses Nema17's
[18:51:01] <rue_shop3> nevodka, what kinda things did you want to see? you have 4314 minutes remaining
[18:51:18] <orlock> so no darlington array based driver
[18:51:21] <nevodka> lol
[18:51:22] <anonnumberanon> nevodka, go pick up a hammer and a sheet of aluminum, oh and a microcontroller
[18:51:35] <anonnumberanon> oh, and a motor, don't forget the motor
[18:51:41] <anonnumberanon> there is your wiki
[18:51:57] <rue_shop3> http://ruemohr.org/~ircjunk/robots/robot_family2.jpg
[18:52:28] <rue_shop3> orlock, the new drivers with the current control do a REALLY good job
[18:52:32] <rue_shop3> I may never go back
[18:52:39] <nevodka> im just looking for an rc car of sorts to program
[18:52:44] <orlock> i got my motor mounts for my robot all sized up correctly
[18:52:58] <rue_shop3> if you find a board with an SLA7044 I can help you
[18:53:04] <orlock> rue_shop3: you mean the bipolar printer style ones?
[18:53:15] <orlock> A4988
[18:53:17] <rue_shop3> current control on unipolar too
[18:53:21] <rue_shop3> or those, whatever
[18:53:30] <rue_shop3> nevodka, DID YOU CLICK THE LINK
[18:53:34] <rue_shop3> http://ruemohr.org/~ircjunk/robots/robot_family2.jpg
[18:53:36] <rue_shop3> http://ruemohr.org/~ircjunk/robots/robot_family2.jpg
[18:53:37] <rue_shop3> http://ruemohr.org/~ircjunk/robots/robot_family2.jpg
[18:53:37] <rue_shop3> http://ruemohr.org/~ircjunk/robots/robot_family2.jpg
[18:53:48] <rue_shop3> I forgot to paste it several times, sorry
[18:54:10] <rue_shop3> dear god thats old, I have so many more robots now
[18:54:49] <anonnumberanon> nevodka, this should get you going
[18:54:52] <anonnumberanon> or quitting
[18:54:53] <anonnumberanon> https://www.intorobotics.com/line-following-robot-tutorials-how-to-build-programming-code-and-resources/
[18:56:15] <anonnumberanon> for the RC thing you want, you can get a bluetooth gamepad and there are small kits out there to hook that up to like, any robot
[18:56:24] <anonnumberanon> playstation gamepad, you know
[18:57:01] <nevodka> nice bots rue_shop3
[18:57:03] <orlock> thats not a robot though, thats just a bluetooth remote!
[18:58:38] <anonnumberanon> nah the bluetooth remote makes the robot more fun to make, cause you can play with it fast
[18:58:39] <rue_shop3> odl old pic
[20:29:43] <i-make-robots> I like your robot family. Here's one of mine.
https://www.marginallyclever.com/makelangelos_everywhere.php
[20:29:58] <rue_shop3> hah, new nick!
[20:30:01] <rue_shop3> how was it?
[20:30:06] <i-make-robots> it was ok.
[20:30:10] <i-make-robots> did you get my earlier msg?
[20:30:21] <i-make-robots> http://www.robotshop.com/forum/control-cables-and-sheaths-t9202
[20:30:24] <rue_shop3> I dont think so
[20:30:33] <i-make-robots> http://www.innerbreed.co.uk/
[20:30:43] <i-make-robots> guy knows his pull pulls well
[20:30:54] <rue_shop3> ah!
[20:31:59] <rue_shop3> interesting, I'v seen that pull-pull unit before
[20:31:59] <i-make-robots> DAE hate games that have unrealistic robots for fostering unrealistic expectations?
[20:32:16] <i-make-robots> he has a clever spring guide, I thought it might interest you
[20:32:30] <i-make-robots> for some reason he doesn't sell a kit with cable, tubes, and springs. oh well.
[20:32:46] <rue_shop3> oh I'v seen their bird before
[20:33:16] <i-make-robots> grg
[20:33:17] <i-make-robots> gtg
[20:33:22] <rue_shop3> later!
[20:33:23] <rue_shop3> thanks
[21:39:01] <anonnumberanon> >having to go
[21:39:03] <anonnumberanon> >on IRC
[21:39:08] <anonnumberanon> Stay basic son.
[21:43:36] <rue_shop3> 0000000000000000000000000000000000000000000000000
