#robotics | Logs for 2016-11-02

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[00:53:26] <rue_shop3> Specified folder/zip file does not contain a valid library
[00:56:36] <rue_shop3> DAMNIT
[00:56:46] <rue_shop3> do I have to rewrite grbl!?
[00:57:04] <rue_shop3> its badly out of date and dosn't work with the downloadable arduino suite
[00:59:57] <rue_shop3> 1.6.2 .. ok...
[00:59:59] <rue_shop3> try that...
[07:22:02] <robotustra> rue_shop3: I don't want to use any chips, just LEDs, plastic cable, couple of resistors and may be couple of smd transistors
[07:26:04] <Snert_> I might do an optical bus for my motor board. Since I have access to fiber.
[07:28:04] <Snert_> robotustra: have you considered light pipes?
[07:37:20] <robotustra> I could, but is it available on ebay?
[07:37:53] <robotustra> I'll start with chip chineese optic fiber cable
[07:38:25] <robotustra> cheep*
[07:38:51] <robotustra> cheap*
[07:39:15] <Snert_> I was thinking light pipes from scrapped equipment. But it would be hard to find the right shape I bet.
[07:40:16] <robotustra> one guy already tried such design for short length, and it was working ok
[07:45:57] <SpeedEvil> it's cheap to buy new
[07:47:07] <robotustra> unfortunately I don't have access to the scrapped optic cables.
[08:38:44] <Snert_> the connectors are too big given the scale of things unless it's an LC to LC patch cable.
[08:40:02] <Snert_> I'm gonna bust apart one and try just the bare fiber ferrule.
[08:43:17] <Snert_> http://www.ebay.com/itm/Bunch-of-FIBER-OPTIC-CABLE-PATCH-FIBER-PATCH-CABLE-/112175689505
[09:02:13] <rue_bed> the fiber size of real fiber optic cable is tiny
[09:02:52] <rue_bed> the .2mm is two part, the fiber and a buffer
[09:03:09] <rue_bed> spdif cable is huge in comparison
[09:07:15] <Snert_> I'm gonna strip off the sheath/kevlar leaving just the fibber and the ferrule.
[09:30:00] <rue_house> you know the core is maybe 62.5 microns dia?
[09:30:36] <rue_house> the buffer around it is 125 microns dia
[09:31:25] <SpeedEvil> It depends on the fibre type.
[09:31:35] <SpeedEvil> monomode fibre can be very narrow
[09:31:38] <rue_house> yea, it might be SMALLER
[09:31:41] <SpeedEvil> plastic fibre for lighting can be very wide
[09:31:57] <SpeedEvil> https://www.thorlabs.de/newgrouppage9.cfm?objectgroup_id=6845
[09:31:59] <rue_house> yea, thats what I suggest he use
[09:32:50] <rue_house> http://www.ebay.ca/itm/1m-3ft-Digital-Fiber-Optic-Audio-Cable-Optical-SPDIF-TosLink-for-TV-DVD-AMP-New-/152294575584
[09:32:58] <rue_house> $1 1m good deal, buy now
[09:33:31] <rue_house> that little metal bar across the connector is a staple, push it out and you have the end off
[09:34:06] <rue_house> http://www.ebay.ca/itm/6Ft-1-8m-Digital-Audio-Cables-Optical-Fiber-Toslink-Interconnects-DVD-CD-Sturdy/232118914761
[09:34:13] <rue_house> 1.8m $1 good deal buy now
[09:36:16] <rue_house> https://www.aliexpress.com/item/Free-Shipping-High-Quality-2016-New-3M-9FT-Digital-Fiber-Optical-Optic-Audio-SPDIF-MD-DVD/32674429233.html
[09:36:26] <rue_house> 3M $1.15, good deal, buy now
[09:37:26] <rue_house> robotustra, ok!?!?!
[09:40:28] <rue_house> https://www.aliexpress.com/item/one-bag-0-75mm-ps-plastic-fiber-optic-cable-with-2meters-length-for-lighting-decors-4/1105809793.html
[09:40:45] <rue_house> 100m $6.50 good deal, buy now
[11:52:26] <anniepoo> dollar store sometimes has fiber optic decorations, you can take them apart
[12:37:45] <robotustra> I'd got already 50m of 0.75mm raw fiber cable
[21:07:10] <rue_shop3> ok
[21:07:13] <rue_shop3> grbl is installed
[21:07:23] <rue_shop3> see if I can make a machine move
[21:11:05] <rue_shop3> Tom_L, whats feed rate usualy in , mm/min or mm/sec?
[21:15:25] <rue_shop3> Tom_L, which way is up?
[21:15:27] <rue_shop3> + or -
[21:15:29] <rue_shop3> armyofevilrobots, ?
[21:16:32] <rue_shop3> which code says the current location is 0,0,0?
[21:23:47] <armyofevilrobots> That was a lot of questions.
[21:24:14] <armyofevilrobots> -Z is down. -X is moving the table to the right, -Y is moving the table away from you.
[21:24:15] <rue_shop3> :)
[21:24:56] <armyofevilrobots> zero is G92 x0y0z0
[21:25:07] <rue_shop3> rue x is backwards
[21:25:34] <armyofevilrobots> negative X moves the table to the right, so left relative to the work piece.
[21:25:48] <armyofevilrobots> Yeah, probalby you need to invert the X direction pin.
[21:26:55] <rue_shop3> would it screw anything up for you if I flip the motor wiring?
[21:27:12] <armyofevilrobots> No, I can fix my config in mach3 in like 30 seconds.
[21:27:16] <rue_shop3> k
[21:27:35] <rue_shop3> the polarity of the other two axies is fine
[21:28:16] <rue_shop3> G1 X..
[21:28:44] <rue_shop3> (wrong window)
[21:35:16] <rue_shop3> G1 fixed
[21:48:58] <rue_shop3> ok, just need a gcode generator
[21:51:39] <Tom_L> rue_shop3, + is up in Z
[21:52:01] <Tom_L> right hand rule
[21:52:38] <orlock> https://www.youtube.com/watch?v=RrxePKps87k
[21:54:20] <Tom_L> feed is in ipm or mmpm i think
[21:54:23] <Tom_L> ipm for sure
[21:55:09] <orlock> It's set in the marlin config, or M92
[21:56:21] <Tom_L> M92 isn't a valid linuxcnc M code btw
[21:56:34] <Tom_L> in case you ever switch
[21:58:51] <Tom_L> G20 or G21 set the units
[21:59:10] <rue_shop3> I'm playing with finding a CAM program now
[21:59:32] <Tom_L> fusion 360 is free
[21:59:50] <Tom_L> i can't help you find one for linux
[21:59:51] <rue_shop3> stl only or will it take dxf and let me do things?
[22:00:00] <rue_shop3> we have a windows machine
[22:00:05] <Tom_L> dxf import
[22:00:10] <Tom_L> it's a full blown package
[22:00:24] <rue_shop3> hmm free trial?
[22:00:29] <Tom_L> free for hobbyists or under 100k business'
[22:00:32] <Tom_L> no it's free
[22:00:37] <rue_shop3> ok
[22:00:48] <Tom_L> autocad puts it out iirc
[22:01:09] <rue_shop3> autodesk, yea
[22:01:19] <Tom_L> http://www.autodesk.com/products/fusion-360/students-teachers-educators
[22:01:31] <Tom_L> it's cloud based
[22:02:09] <Tom_L> i don't know system requirements
[22:02:24] <Tom_L> may need 64bit os
[22:03:10] <Tom_L> i've heard it has a linuxcnc post too
[22:03:46] <rue_shop3> Tom_L, not supported for windows
[22:03:50] <rue_shop3> if its not 64 bit
[22:04:08] <Tom_L> you can't run 64bit?
[22:04:11] <rue_shop3> :( back to writing one
[22:04:14] <Tom_L> what os is it?
[22:04:21] <Tom_L> you could use mine if you want
[22:04:36] <rue_shop3> XP 32 bit
[22:04:39] <Tom_L> it's old but it works good
[22:04:45] <rue_shop3> whats it?
[22:04:49] <Tom_L> smartcam
[22:04:59] <rue_shop3> I'm game for anything
[22:05:59] <Tom_L> who's pc?
[22:10:13] <Tom_L> fusion 360 would be easier to use
[22:10:28] <Tom_L> cad cam has come a long ways since i bought mine
[22:10:30] <rue_shop3> not without an expensive computer to run it
[22:10:52] <rue_shop3> I'm writing one for reading dxf files and doing things with the stuff in them
[22:11:38] <Tom_L> if you had a cad cam why would you need dxf?
[22:11:48] <rue_shop3> dxf goes in
[22:11:57] <rue_shop3> and nc comes out
[22:11:58] <Tom_L> or you draw it
[22:12:03] <Tom_L> in the cad cam
[22:12:09] <rue_shop3> and between them a human says what lines are what
[22:12:30] <rue_shop3> pocket, profile, etc
[22:12:38] <Tom_L> i'm not sure if the 3d package will take in a dxf honestly... i know the 2d will for sure
[22:13:01] <Tom_L> 3d will import wire frames etc
[22:13:12] <rue_shop3> I have a shape I want to cut out
[22:13:20] <rue_shop3> not of a block, of a peice of plate
[22:13:33] <rue_shop3> this shouldn't be hard! :)
[22:13:40] <Tom_L> what is it?
[22:13:57] <Tom_L> between all the cad cam i have here i've never had a file i couldn't import
[22:14:11] <rue_shop3> all sorts of things, everything I want to do these days with a cnc is either an array of holes, or cutouts
[22:14:46] <rue_shop3> pocketing has been usefull in the past, but isn't part of anything I'm playing with now
[22:15:07] <Tom_L> i generally did pockets manually but it will do them
[22:15:14] <Tom_L> just found it easier
[22:15:17] <rue_shop3> armyofevilrobots, turns out, one of the other fellows i know has an EMCO mill sitting in his basement under about 300lbs of parts and dust!
[22:15:31] <armyofevilrobots> Ooooh.
[22:15:33] <armyofevilrobots> Is he selling?
[22:15:49] <rue_shop3> yea, my jaw hit the floor, cause I thought they had to give it back to BCIT
[22:16:04] <rue_shop3> I THOUGHT it was borrowed, but it seems its offloaded
[22:16:07] <armyofevilrobots> Which one does he have?
[22:16:17] <rue_shop3> its got a tape drive.
[22:16:27] <rue_shop3> microcasette, verry modern
[22:16:30] <rue_shop3> :)
[22:16:34] <armyofevilrobots> https://cdn.instructables.com/FPI/1AR6/H994VNSJ/FPI1AR6H994VNSJ.MEDIUM.jpg
[22:16:34] <rue_shop3> not sure on the model
[22:16:35] <armyofevilrobots> ?
[22:16:47] <rue_shop3> no, mill
[22:17:00] <Tom_L> hah, this sc won't run on 64bit i remember
[22:17:10] <armyofevilrobots> http://www.cncmaker.com/imagesinventory/categorymetal/category_metalsub_mill/AM07013_emcoF1.jpg
[22:17:11] <Tom_L> it's on my 32bit ssd
[22:17:25] <rue_shop3> http://www.lathes.co.uk/emcomiller/img20.jpg
[22:18:15] <rue_shop3> http://www.cncmaker.com/imagesinventory/categorymetal/category_metalsub_mill/AM07013_emcoF1.jpg
[22:18:52] <armyofevilrobots> Gotcha. That’s about the same as the sherline for work envelope. Maybe a bit more Z axis space.
[22:19:16] <rue_shop3> yea, its not larger
[22:20:13] <rue_shop3> anyhow, he also had a router table thats taking up space in a walkway
[22:20:16] <rue_shop3> and I just built one
[22:20:42] <Tom_L> you gonna need a bigger shop
[22:20:52] <rue_shop3> about 1200 square feet?
[22:21:11] * rue_shop3 looks to the plans for the new house on the wall
[22:21:12] <Tom_L> x 3
[22:31:24] <rue_shop3> see how far I can get with cambam
[22:32:29] <Tom_L> it sucks
[22:32:37] <Tom_L> i loaded it to help a guy once
[22:32:39] <Tom_L> i hated it
[22:32:48] <Tom_L> feel free...
[22:33:00] <Tom_L> how soon do you need something?
[22:34:34] <Tom_L> https://www.bullerjan.com/en/products/free-flow/
[22:34:40] <Tom_L> rue_shop3, ever see one of those?
[22:40:11] <rue_shop3> its behaving so far
[22:40:34] <rue_shop3> not seen one
[22:40:39] <Tom_L> lemme know and i'll get an iso
[22:40:51] <rue_shop3> you have to be carefull not to overcool the fire or you get carbon buildup
[22:44:11] <Tom_L> you want 2.5d or 3d?
[22:44:30] <Tom_L> i never use the 2.5d package anymore
[22:45:18] <rue_shop3> 2.5
[22:45:22] <rue_shop3> personally
[22:45:36] <Tom_L> the 3d will do both
[22:46:38] <Tom_L> and i've already got a post for lcnc i modded
[22:50:25] <rue_shop3> ooo, grbl didn't like the cambam output
[22:51:53] <rue_shop3> dosnt' like any of the arcs
[22:54:23] <rue_shop3> iirc the emco didn't like arcs either
[22:55:59] <rue_shop3> oh, that time it worked
[22:56:55] <Tom_L> you can output arcs as arcs or short line segments
[22:57:37] <Tom_L> some machines you need to define them differently in the machine setup and post
[22:57:53] <rue_shop3> it ran ok the second time?
[22:58:59] <Tom_L> what was different?
[22:59:43] <rue_shop3> dunno
[23:00:37] <rue_house> I'm calling it a night tho
[23:01:06] <rue_house> my goal was to get grbl working, it does
[23:04:13] <Tom_L> later