#robotics | Logs for 2016-11-01

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[00:10:11] <rue_shop3> all the limit switches are wired in series, normally closed, if you were trying to home, how would you know what axis is tripped if you didn't just trip one
[00:10:25] <rue_shop3> granted, I see here you dont 'home' the machine per say
[00:10:28] <rue_shop3> but hmm
[03:52:32] <deshipu> the phrase is "per se"
[03:52:43] <deshipu> it has nothing to do with saying anything
[12:39:34] <robotustra> hi
[12:40:48] <robotustra> does anybody make own optical cable?
[13:24:32] <Snert> as in terminate fiber?
[14:09:47] <robotustra> yes
[14:10:02] <robotustra> and may be DIY terminator
[14:11:02] <robotustra> too much complex tools
[14:12:30] <robotustra> https://www.anixter.com/en_ca/about-us/news-and-events/news/how-to-terminate-fiber-optic-cable-step-by-step.html
[14:13:31] <robotustra> I want to make custom rs232 optic isolated connection
[14:13:46] <robotustra> from scratch
[14:19:35] <Snert> might wanna look at leviton for fiber termination gear.
[14:19:48] <Snert> they have a connector filled with optical jelly.
[14:20:05] <Snert> so bye bye sanding/polishing....yadadada
[14:20:41] <Snert> but if you wanna do this with a piece of bailing wire and a hose clamp then I'm fresh outta ideas.
[14:22:08] <robotustra> I want to use something like 3mm IR LED and receiver
[14:22:16] <robotustra> in a shrink tube
[14:22:41] <robotustra> for not very long distance, like 50 cm
[14:22:47] <robotustra> up to 1 m
[14:24:26] <Snert> standard 3feet fiber patch cables pre-made. Or a piece of scrap 6 fibers in a sheath - strip out 1 or 2 pieces of glass and terminate.
[14:25:27] <Snert> I bet it would conduct led light just fine for that short of a distance.
[14:25:36] <Snert> even if only LEDs.
[14:25:40] <robotustra> yep
[14:26:47] <Snert> last I priced, the connectors are about 30.00 to 40.00 each.
[14:26:54] <robotustra> 3f is even too long for me, notmally I'll use aboit 20 cm cables
[14:27:03] <Snert> that's why I say just buy premade.
[14:27:41] <robotustra> I'll try to do chip shit optic coupler
[14:27:57] <robotustra> IR LED -> IR recv
[14:28:44] <Snert> you just might be able to position the fiber correctly and have it never move. I have doubts though.
[14:29:01] <Snert> precise alignment.
[14:29:08] <robotustra> I'll drill the LED
[14:29:16] <robotustra> and glue the fiber in it
[14:29:42] <robotustra> make a small hole, put transparent glue in the hole
[14:29:56] <robotustra> or put optic gel there
[14:30:07] <robotustra> and shrinking tube on top
[14:30:17] <robotustra> to hold all construction
[14:30:34] <robotustra> just to try
[14:30:40] <robotustra> if it will work
[14:35:47] <Snert> if ya have a change, get a chunk of multimade as well as single mode fiber.
[14:35:51] <Snert> chance
[14:36:46] <robotustra> щквукув шт уифн
[14:36:55] <robotustra> ordered on ebay
[14:37:15] <robotustra> 0.75 mm single mode optic fiber
[14:39:59] <robotustra> not sure if it's single mode http://www.ebay.com/itm/232029561861
[14:42:11] <Snert> plastic instead of glass. SO I don't think there's any such designation as single versus multimode.
[14:42:52] <Snert> that stuff is made just for LEDs it looks like. Not regular old telecom fiber such as I was thinking.
[14:43:44] <Snert> looks like a pretty fun and cheap adventure alright.
[14:43:55] <Snert> if it don't work, who cares :)
[14:44:26] <Snert> no big bucks lost I mean.
[14:44:35] <robotustra> нуз
[14:44:37] <robotustra> yep
[14:44:41] <robotustra> chip shit
[14:44:49] <robotustra> just to try if it works
[14:46:20] <Snert> http://www.ebay.com/itm/NetSource-2-Fiber-Optic-Patch-Cable-LC-LC-MultiMode-Duplex-50-125-/141252188432?hash=item20e3495910:g:e2AAAOxycD9TRuUZ
[14:46:27] <Snert> $1.20
[14:47:21] <Snert> but it may require more precise alignment than the plastic fiber stuff.
[14:51:26] <robotustra> yeah, it's ok , but I don't like connectors
[14:51:41] <robotustra> and the lengs is too big
[14:52:01] <robotustra> half of my robot
[19:55:53] <rue_house> who is doing the fiber isolation for the serial?
[19:56:14] <rue_house> why not use spdif transcievers?
[21:23:21] <Enamkcin> /b 6
[22:32:57] <rue_shop3> figures, the most popular thing on the face of the world and there is no debian package for it: ARDUINO
[22:33:14] <rue_shop3> it'd be two years behind if it was... but..
[22:52:13] <Guest75007> Join this discussion forum
[22:52:14] <Guest75007> http://space-technology.freeforums.net/thread/1/welcome-new-forum
[23:04:08] <z64555> how about no
[23:30:59] <rue_shop3> I agree with no
[23:40:24] <vicarion> no it is, then. robots first, then spaceships later
[23:40:53] * rue_shop3 deletes everything grbl and arduino on the system, start ALL over again
[23:45:13] <z64555> :C