#robotics Logs

Jan 22 2018

12:21 AM rue_: it was easy so far
12:24 AM rue_: just a new thing
12:30 AM rue_: huh, premixed coolaid sucks
12:30 AM rue_: go figure
12:31 AM rue_: ok, I need supper, and the premixed coolaid aint gonna cut it
12:31 AM rue_: maybe some icecream
09:17 AM mrdata_ is now known as mrdata
09:56 AM Casper: Hi there, question for you guys... I need to make a bracket for some akro bins... it have a hook thing on the back... initial plan was to have a 1/8" flatbar and weld a 1/16" flat bar on it to make an edge where the hook can grab... 1/16 is unavailable... anyone else have an idea?
01:52 PM Tom_L: Casper paste a sketch somewhere
02:43 PM mumptai: Hey, what is the last nasty electronics problem you people encountered?
02:48 PM Tom_L: nothing too nasty but i put this together: http://tom-itx.no-ip.biz:81/~webpage/rue/Control2.jpg
02:50 PM mumptai: nice, mesa controller card :)
02:50 PM Tom_L: only the best
02:51 PM mumptai: never used them, but had a look at ther FPGA stuff, looked pretty fine
02:51 PM mumptai: but that is a lot of wire criss cross
02:53 PM mumptai: actually why star-point grounding is a good idea, but doesn't scale infinitly
02:54 PM mumptai: but it looks like it will for sure work and earn its cause for being ;)
02:58 PM robotustra: Tom_L, did you finish wiring?
04:44 PM Casper: Tom_L: https://i.imgur.com/hBf1vrw.png <=== bin is black, blue and red are what I tought of doing, but... need a new plan...
04:45 PM Casper: they don't sell 1/16" in flat bar, will be in sheets, and cutting to size is kinda expensive, so... meh
05:08 PM Tom_L: yeah i got a 'board' made for them for mine
05:08 PM Tom_L: looks like loovers sticking out of a sheet of metal for them to hook on
05:09 PM Tom_L: https://www.uline.com/Product/Detail/H-1492/Bin-Organizers/Wall-Mount-Panel-Rack-36-x-19?pricode=WA9197&gadtype=pla&id=H-1492&gclid=EAIaIQobChMInfWFkNjs2AIVkfhkCh05eg4aEAQYASABEgJn1PD_BwE&gclsrc=aw.ds
05:14 PM Tom_L: 2 strips of metal like you show might work
05:15 PM Tom_L: have the tin shop bend you some Z strips then cut them to length
05:15 PM Casper: the problem is that the 1/16" is sheet metal only, which they charge way too much to cut it
05:15 PM Tom_L: maybe some sort of flashing for roofing etc may already be bent that way
05:16 PM Tom_L: but that tin may not be heavy enough
05:19 PM Casper: will mostly have to call/visit some place monday... if I have a car...
05:20 PM Casper: mine will be going in for a massive surgery
05:20 PM Casper: an engine replacement, under warranty !
05:23 PM ferdna: https://forum.sparkfun.com/viewtopic.php?f=14&t=42397
05:23 PM ferdna: anyone yet?
06:58 PM rue_: power outage from 7:25am to 1:22pm
06:58 PM rue_: WTF
06:58 PM rue_: we *just* made it out of a 100km/hr storm with *no* power outages
07:23 PM Tom_L: rue_
07:35 PM rue_: yea
07:37 PM Tom_itx: https://youtu.be/jRN00-0enYw
07:39 PM Tom_L: i still gotta move some things around
07:41 PM mrdata-: what did that even accomplish?
07:42 PM rue_: well it saved him about $100000
07:42 PM Tom_L: mrdata i built that from scratch
07:42 PM mrdata-: oh
07:42 PM mrdata-: good work, then
07:42 PM Tom_L: materials from a scrap yard
07:43 PM mrdata-: so did you use it to mill that piece of aluminum?
07:43 PM mrdata-: or was that just a test
07:43 PM Tom_L: i used my sherline to drill most of the holes for this on e
07:43 PM Tom_L: that program being run is the plate holding the x axis to the y axis
07:44 PM Tom_L: just grabbed a program i had to test the mill
07:45 PM rue_: youtube must have removed more of their codecs
07:48 PM rue_: heh, if you need to work on that box, your gonna hate having it up there
07:48 PM Tom_L: i haven't dialed the current up on the drivers yet either, i think they're running at 2.5A and th steppers are good for 5A
07:48 PM Tom_L: rue_ it won't be any worse than climbing on top of the sherline
07:49 PM rue_: the Y spacer isn't in?
07:49 PM Tom_L: huh?
07:49 PM Tom_L: it should be
07:49 PM rue_: didn't notice the big spacer behind the spindle was it there
07:49 PM rue_: chomium is so horridly slow that the video didn't play well
07:50 PM Tom_L: what spacer? the steel standoff or the aluminum mount i made for it?
07:50 PM rue_: the steel standoff
07:50 PM Tom_L: it's there
07:50 PM Tom_L: 6:
07:50 PM Tom_L: 6"
07:51 PM Tom_L: i should have shot that further back
07:52 PM Tom_L: but i wanted to be close to the kill switch
08:11 PM codepython777: rue_: I think rpi can do i2c/spi without arduino
08:12 PM codepython777: rue_: it does have sda/scl - why arduino?
08:14 PM orlock: codepython777: easier to get something resembling real-time to work on an arduino than a linux system
08:15 PM codepython777: orlock: short term - yes indeed.
08:45 PM durrf: can someone share plans on how to make this robot?? http://i.imgur.com/Z7vkdq3.gifv
09:12 PM Tom_itx is now known as Tom_L
09:31 PM ferdna: Tom_L, what brand is that mill?
09:31 PM Tom_L: Tom_L brand
09:31 PM Tom_L: i made it from scrap
09:32 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/cnc/Column_Mill_VMC.jpg
09:32 PM ferdna: Tom_L, no freaking way... it looks too good
09:32 PM Tom_L: started with a plan
09:32 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/cnc/Mill_Steel/
09:32 PM Tom_L: proof
09:32 PM ferdna: Tom_L, how much did you invest in it?
09:33 PM Tom_L: the ballscrews and rails were the biggest expense
09:33 PM Tom_L: the metal all came from the scrap yard
09:33 PM Tom_L: by the pound
09:33 PM Tom_L: and i got some bigger steppers than i had on my sherline
09:33 PM Tom_L: 570 in/oz
09:34 PM ferdna: ohh
09:34 PM ferdna: do you have an approximate?
09:34 PM Tom_L: 6-700
09:35 PM ferdna: ohh wow...
09:35 PM ferdna: i was planning to get a grizzly
09:35 PM AchiestDragon: Tom_L: mill looks kool :)
09:35 PM Tom_L: https://www.ebay.com/itm/3pcs-NEMA23-570OZ-IN-5A-3-8-DUAL-SHAFT-STEPPER-MOTOR/253223632606?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m1438.l2649
09:36 PM Tom_L: https://www.ebay.com/itm/US-Square-Linear-Rail-Guide-Set-Ballscrew-1605-400-700-1000-Nut-BK-BF-12-HGH20/273036235047?hash=item3f923a5127:g:PDYAAOSwrk5ZeFd3
09:37 PM Tom_L: most of the rest of it i made
09:37 PM Tom_L: bought a couple boxes of screws
09:37 PM ferdna: what software?
09:37 PM Tom_L: and a quart of paint :D
09:37 PM Tom_L: linuxcnc
09:38 PM Tom_L: oh i made the control too but that doesn't count because i took it off my sherline
09:39 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/rue/Control2.jpg
09:39 PM ferdna: ohhh hehehe
09:39 PM ferdna: super cool
09:39 PM ferdna: i need those cad files
09:40 PM Tom_L: i made it from stuff i could get at the scrap yard
09:40 PM Tom_L: i changed the model a couple times to acomodate that
10:04 PM Tom_L: ferdna if you have the ability and resources, make your own
10:04 PM ferdna: Tom_L, =|
10:04 PM Tom_L: i think the grizzly is smaller but i'm not sure
10:04 PM Tom_L: the travel on mine is about 7" z, 13" y and 18" x
10:05 PM ferdna: Tom_L, let me check
10:09 PM BitEvil is now known as SpeedEvil
10:12 PM Tom_L: looks like it depends which one you're looking at
10:12 PM Tom_L: the larger ones have a table of 8 x 30
10:13 PM Tom_L: but i'm not sure how much travel they are
10:14 PM Tom_L: 7 3/4 by 18
10:14 PM Tom_L: and 3.5" spindle travel
10:14 PM Tom_L: knee goes up and down 17 3/4
10:15 PM Tom_L: similar
10:15 PM Tom_L: but i like having more Y travel
10:16 PM ferdna: Tom_L, not true
10:16 PM Tom_L: what's not true?
10:17 PM ferdna: the specs you just disclosed
10:17 PM Tom_L: http://www.grizzly.com/products/8-x-30-Vertical-Mill-with-Power-Feed/G0731
10:17 PM Tom_L: which one are you looking at?
10:17 PM ferdna: modified one
10:18 PM Tom_L: link?
10:27 PM ferdna: dont have it at hand