#robotics Logs

Sep 26 2017

04:16 PM mumptai: hi
06:03 PM SpeedEvil: https://imgur.com/gallery/mUKde
06:48 PM veverak: https://www.youtube.com/watch?v=CtcmdWOtQw4 <3
07:32 PM rue_house: oh I have lots of time, its just all in the wrong place.
07:37 PM orlock: sumo bot isnt controllable yet
07:37 PM orlock: looks like most of the other competitors in the same boat
08:02 PM rue_shop3: uh
08:02 PM rue_shop3: why no control?
08:02 PM rue_shop3: what kinda motors?
08:02 PM rue_shop3: what kind controller
08:02 PM rue_shop3: (hid)
08:13 PM orlock: rue_shop3: It hould work, just not "tested" - i was up soldering and mounting microcontrollers at 3am
09:45 PM rue_shop3: he
09:50 PM rue_shop3: ok I put the new kitchen lights in
09:50 PM rue_shop3: it'll take some adjusting to
09:50 PM rue_shop3: I'll have to install a sunglasses-holder by the hall to the kitchen
09:53 PM rue_shop3: ok I was working on the cnc controller
09:53 PM rue_shop3: so when I wake up, I can work on that
09:55 PM rue_shop3: Tom_L, why do cnc folk make such a big deal about drilling a hole, none of the software I'v seen will use anything other than a canned cycle for it,
09:55 PM rue_shop3: just do the stuff...
09:55 PM Tom_L: don't understand, who's making a big deal about it?
09:55 PM Tom_L: there are 2 or 3 cycles for it at least
09:55 PM rue_shop3: been using bamcam, cant just get it to drill a hole
09:56 PM Tom_L: 2 types of retract
09:56 PM Tom_L: full out
09:56 PM Tom_L: or just peck
09:56 PM Tom_L: depending on the hole
09:56 PM Tom_L: or are you just spot drilling for a larger drill...
09:56 PM Tom_L: drill with dwell
09:56 PM Tom_L: many different purposes
09:56 PM rue_shop3: yea, the nc program is insisting on not doing the drill moves manually
09:57 PM Tom_L: what nc program?
09:57 PM rue_shop3: bamcam
09:57 PM Tom_L: i loaded that and unloaded it just as quick
09:57 PM rue_shop3: its the best I'v found so far
09:58 PM rue_shop3: jester didn't finish installing yours but said it was stupid and out of date and complianed that he couldn't get it uninstalled....
09:58 PM Tom_L: G81..83 are drill
09:58 PM Tom_L: G73 is drill
09:58 PM rue_shop3: I suggested he should have finished trying it first
09:58 PM Tom_L: it is out of date
09:58 PM rue_shop3: yea, but grbl dosn't support that
09:58 PM Tom_L: but it works rather well
09:58 PM Tom_L: support what?
09:58 PM rue_shop3: and my wallet dosn't support the emc hardware interfaces
09:59 PM Tom_L: get a real interpreter :)
09:59 PM rue_shop3: g81 and g73
09:59 PM rue_shop3: and my wallet dosn't support the emc hardware interfaces
09:59 PM Tom_L: it could
09:59 PM Tom_L: you just don't want to direct funds that direction
09:59 PM rue_shop3: not that much
10:00 PM Tom_L: consider your cnc part of the backbone of your shop
10:00 PM Tom_L: as you do the lathe
10:00 PM rue_shop3: the emc package dosn't have a g-code generator does it?
10:00 PM Tom_L: you bought a brand new lathe
10:00 PM Tom_L: the cost of the boards would be much less than that
10:00 PM Tom_L: it has some simple built in functions yes
10:01 PM Tom_L: and jt wrote some that do holes, pockets etc
10:01 PM Tom_L: nothing fancy like full 3d
10:01 PM Tom_L: but no hobbyist needs that
10:01 PM rue_shop3: I just want 2d->3d call it 2.5D if you like
10:01 PM Tom_L: you could do it with a parallel port but it would be slow
10:01 PM rue_shop3: import dxf, tell it what to do with the shapes
10:01 PM Tom_L: 2.5d is it's common name yes
10:02 PM Tom_L: lcnc also has a dxf to gcode i believe
10:02 PM Tom_L: i don't use that stuff so i'm not as familiar with it
10:02 PM rue_shop3: the only 3d I'v done is with my PNG reader, uses the pixel greyscale for height and profiles a rectangle
10:03 PM Tom_L: i've even got a spare set of boards
10:03 PM Tom_L: and a few odd ones
10:03 PM rue_shop3: I'm getting momentum up to write one
10:04 PM rue_shop3: looking at the clipper library again
10:04 PM Tom_L: you'll spend your days preparing for something and when it arrives you may not be there
10:04 PM Tom_L: clipper?
10:04 PM Tom_L: what was that?
10:04 PM rue_shop3: if I'd started back in 2003 when I had the idea, I'd be running the best free nc software out there now
10:04 PM rue_shop3: http://www.angusj.com/delphi/clipper.php
10:04 PM rue_shop3: it can offset polygones
10:05 PM Tom_L: that's not the clipper i know of :)
10:05 PM rue_shop3: right now, I could write something that does engraving and drilling
10:05 PM Tom_L: right now i could _do_ engraving and drilling
10:05 PM rue_shop3: but I'd need that clipper library to do internal/external cutting, and pocketing
10:06 PM rue_shop3: yea, I'm using bamcam
10:06 PM rue_shop3: but the free uses are running out
10:06 PM rue_shop3: and they want about 70cad
10:06 PM Tom_L: http://gnipsel.com/files/mill-g-code/
10:06 PM Tom_L: that's jt's
10:06 PM rue_shop3: which, .... might not be unreasonable
10:06 PM rue_shop3: I think I was looking at it last year
10:06 PM Tom_L: there is also another image->gcode one out there
10:07 PM rue_shop3: dont want image to gcode, want dxf object to gcode
10:07 PM Tom_L: and some add in tabs that will do simple stuff that's a part of lcnc
10:07 PM Tom_L: he was writing a dxf interpreter
10:07 PM Tom_L: dunno how far he got
10:07 PM rue_shop3: I can read dxfs
10:08 PM rue_shop3: and I made a library to store all the objects
10:08 PM rue_shop3: not sure how to handle generating nc commands
10:08 PM Tom_L: http://linuxcnc.org/docs/2.7/html/gui/image-to-gcode.html
10:08 PM rue_shop3: codewise preferences
10:08 PM rue_shop3: thats an intense version of what mine does
10:08 PM Tom_L: http://linuxcnc.org/docs/2.7/html/examples/gcode.html
10:08 PM rue_shop3: but mine directly operates the machines
10:09 PM rue_shop3: yea, I'v got a zillion projects
10:09 PM Tom_L: which puts you in a box by yourself
10:09 PM rue_shop3: and a really limited amount of get-up-and-go
10:09 PM Tom_L: if it did gcode you could use any cad to do it
10:10 PM rue_shop3: dot need any cad, dxf is great
10:10 PM Tom_L: hope i'm still around when you finally decide to give in...
10:10 PM rue_shop3: planning on checking out soon?
10:11 PM Tom_L: one never plans that
10:11 PM Tom_L: i know jt uses simple tools for alot of the stuff he does
10:11 PM Tom_L: like pockets, holes etc
10:12 PM rue_shop3: yep, my origional machines are hand coded
10:12 PM Tom_L: i don't think he has any fancy cad either
10:12 PM rue_shop3: which made them overly burnening to use
10:12 PM Tom_L: i just had it so i may as well use it
10:12 PM rue_shop3: so the machine just sat in the corner
10:12 PM Tom_L: i'm not gonna go buy another one
10:12 PM rue_shop3: it is also terribly slow
10:13 PM Tom_L: so outdated it is, but i can do full 3d
10:13 PM rue_shop3: but the new stepper drivers and grbl mean that I can dxf out something quick, and get it going on a machine in <7mins
10:14 PM rue_shop3: its still a bit more work than 3d printing something
10:14 PM Tom_L: yeah
10:14 PM Tom_L: probably more durable though
10:14 PM rue_shop3: prolly wouldn't be an issue if there was a linux version of bamcam
10:14 PM rue_shop3: yea
10:14 PM rue_shop3: apples - oranges
10:14 PM rue_shop3: taking the bus vs driving a car
10:14 PM rue_shop3: I can bring 2x4's back home in my truck with MUCH LESS fuss
10:15 PM Tom_L: or taking a moped as you seem to like to do
10:15 PM Tom_L: mine has a lathe package as well but i've only used it once
10:15 PM rue_shop3: yea, my old machine has a rotary axis
10:16 PM rue_shop3: the driver is set up to use a relay to switch between Y and A
10:17 PM Tom_itx: http://store.mesanet.com/index.php?route=product/product&product_id=291&search=7i90
10:17 PM Tom_itx: http://store.mesanet.com/index.php?route=product/product&product_id=99&search=7i47s
10:17 PM Tom_L: is all you need
10:17 PM Tom_L: if you have a parallel port
10:18 PM Tom_L: that would also give you spindle control
10:18 PM Tom_L: 0-10v
10:20 PM Tom_L: or you could use ethernet but you'd need a little newer pc
10:20 PM Tom_L: it requires running preempt instead of rtai os
10:20 PM Tom_L: which typically needs a faster machine
10:21 PM Tom_L: for example, my D525 MB won't run it but my asrock would
10:22 PM Tom_L: that would give you 72 IO to play with
10:39 PM rue_shop3: I need to change out one haha 79usd
10:39 PM rue_shop3: hahaha, no
10:40 PM rue_shop3: and grbl can out pace the parallel port
10:40 PM rue_shop3: thats part of the reason I have armyofevilrobots machine, he was using mach3
10:40 PM rue_shop3: and it was too slow for him
10:52 PM Tom_L: parallel port?
10:52 PM Tom_L: that would be the limiting factor
10:53 PM Tom_L: that and mach
10:54 PM Tom_L: rue_shop3, you could actually get by with the $59 board by itself if you were willing to make an isolation board
10:55 PM Tom_L: with optos or such
10:55 PM Tom_L: you could use it directly but it would be tied right to the FPGA pins
10:55 PM Tom_L: thru some buffers i think
10:56 PM Tom_L: that board offers parallel, spi and rs-422 interface
10:57 PM Tom_L: the $79 board is the daughter card that gives you differential io
10:58 PM Tom_L: it just makes it nicer to hook up
10:59 PM Tom_L: i can get ~80 ipm max from mine which isn't bad for that machine
11:15 PM Tom_L: ok, i'll keep trying :)
11:37 PM rue_shop3: grbl is really cheap, and doing an ok job right now
11:38 PM rue_shop3: $2.50 cad
11:38 PM rue_shop3: hmm, I need a power distribution point
11:38 PM rue_shop3: wonder what I should use....