#robotics | Logs for 2016-06-16

Back
[03:43:58] <pokmo> hi
[03:44:15] <pokmo> i have a motor with mounting holes 16MM apart. does anyone know where i could get something like a cheese plate for mounting it?
[03:44:29] <pokmo> basically any plate with holes 16MM apart
[03:45:14] <deshipu> laser-cut one?
[03:45:20] <deshipu> or 3d-print
[03:45:30] <deshipu> or get a solid plate and drill holes?
[03:46:27] <pokmo> unfortunately i haven't got tools here
[03:46:35] <pokmo> i wonder if there's something like that off the shelf
[03:46:48] <deshipu> meccano sets?
[03:46:54] <deshipu> no idea what their hole spacing is
[03:47:16] <deshipu> for a plastic plate you don't really need much tools, just a hot nail
[03:47:47] <pokmo> hmm i guess i'll get a nylon board then
[03:47:56] <pokmo> and drill holes
[03:48:05] <pokmo> or melt holes
[04:17:43] <deshipu> suspiciously cheap servo: http://www.aliexpress.com/item/High-quality-metal-digital-robot-servo-RDS3115-15Kg-for-Futaba-JR-rc-Car-helicopter-airplane-robot/692954479.html
[04:33:01] <deshipu> veverak: http://hackaday.com/2016/06/16/beautiful-cardboard-robot-build/
[05:40:50] <veverak> deshipu: cool
[07:32:58] <rue_bed> remember that standard pwm is technically digital, so they can call a standard servo 'digital'
[07:33:37] <rue_bed> the servo itself prolly runs about $3, so with the brackets that seems about right
[07:33:38] <SpeedEvil> Digital servos were available _long_ before micros fell into range where servos would actually incorporate them
[07:34:00] <SpeedEvil> It generally as I understand it does not mean any sort of fancy digital control.
[07:34:04] <rue_bed> they do call normal servos digital
[07:34:08] <SpeedEvil> But that it has an engineered deadband.
[07:34:23] <SpeedEvil> So that it doesn't drain power on tiny half-degree oscilations
[07:34:46] <SpeedEvil> As very simple servo circuits can do.
[07:57:44] <deshipu> I'm not saying that 'digital' is so good about it, but 15kg*cm
[07:57:58] <deshipu> if *that* is true, that price is still great
[07:58:31] <deshipu> of course I would expect very poor quality -- they had to get down to that price somehow
[07:58:43] <SpeedEvil> yes
[12:50:11] <rue_house> I'm stoked to work on the air muscles today
[12:50:21] <rue_house> I want to get the pressure sensors goijg
[13:12:31] <Tom_itx> 2500 psi
[13:18:25] <anonnumberanon> do it punk
[13:44:22] <blib> rue_house: are you around?
[17:30:40] <rue_house> kinda square
[21:24:04] <rue_shop3> theBear, I need help, msg me your last name again!
[21:24:15] <rue_shop3> your gonna temporarily own a boat in canada
[21:24:18] <rue_shop3> a few years ago
[21:41:32] <ace4016> lmao
[21:47:29] <jhylands> Custom ROV a friend and I are building: https://www.youtube.com/watch?v=rwp4moIg7Zg
[22:06:42] <ace4016> cool. how does it rise/fall?
[22:21:14] <rue_shop3> not by a constant current winch, I can assure you of that
[22:22:18] <rue_shop3> why use an optic sensor on the end of a track to know if a ball is there when you can employ a camera and a top of the line computer running realtime computer vision software to know its in the same place.
[22:34:53] <codepython777> jhylands: nice work
[23:36:00] <rue_house> jhylands, your flyer is swimming...?