#robotics Logs
Aug 04 2014
#robotics Calendar
00:06 rue_shop2 why is it that even when scaled down 8:1, a blurry photo still seems blurry?
00:21 MrCurious got marlin configured to drive my 3 delta steppers
00:27 MrCurious GuShH: you around
00:29 GuShH no
00:29 GuShH MrCurious: you around
00:29 MrCurious you seeing any effects from the default?
00:29 GuShH actually going to bed in 2 minutes.
00:29 GuShH MrCurious: yes I feel more urges to have her shot.
00:29 GuShH just wait a couple months and I'll be whining a lot more.
00:30 MrCurious better invest in cans of soup
00:30 GuShH we are going to devaluate even more.
00:30 GuShH more like bullets.
00:30 MrCurious they retain their value really well, and you can eat them, or live in them if you have enough to buid a fort
00:36 GuShH MrCurious: yeah, not funny.
00:36 MrCurious was meant as earnest advice
00:37 GuShH you may not see it, but there's a middle finger pointed at your general direction :)
00:37 GuShH this would not be my first default.
00:38 MrCurious yeah, hbo guy said argentina had some practice with defaulting and mentioned some number like seven
00:38 GuShH as if the US wasn't in heavier debt than us.
00:38 MrCurious seems its all because a hedge fund billionaire would not negotiate pay back
00:38 GuShH quit playing world police!
00:39 GuShH it's all nonsense.
00:39 MrCurious yeah, i am all for a little isolationism
00:40 GuShH anyway, buying some new machinery this week
00:40 MrCurious oh what ya gettin
00:41 MrCurious offered my old 12" miter saw to a friend for free. then he counter offered a full height drill press for free
00:42 GuShH MrCurious: it's an old industrial drillpress actually, mostly a mill-drill nearly 1.4HP 3 phase motor, gearhead, etc. will do until I find the mill I'm looking for
00:42 MrCurious very cool
00:42 GuShH it's got a big vise and XY table, just not exactly what I wanted
00:43 GuShH is your drillpress an old american made one?
00:43 MrCurious hopefully no runout on the quill of th drill press
00:43 GuShH some of those were amazingly rigid
00:43 GuShH MrCurious: they had a split-collar type of deal
00:43 GuShH which allowed you to take out slop on the quill
00:43 GuShH just by adjusting one or two screws, it would press onto the quill.
00:43 MrCurious cool
00:43 GuShH it just has surface rust
00:44 GuShH I don't understand why the used china mills hold their value so well
00:44 GuShH at least around here
00:44 GuShH not that anyone is buying them at those high prices...
00:47 GuShH MrCurious: anyway this is from when we had an industry... 70s I think http://images01.olx-st.com/ui/22/51/77/1406867485_686314477_1.jpg terrible for milling, but it'll do for now. I wish these guys would clean up their place once in a while, all the pictures look like they were taken inside hitler's bunker.
00:48 GuShH I don't see the point in buying new import now that the prices are going to fluctuate wildly as people speculate...
00:50 GuShH But there's no way that thing is worse than the new round columns
00:50 GuShH other than the smaller table.
00:50 MrCurious does hitler know your bying his milling machine
00:50 GuShH he offered a free moustache
00:51 GuShH did you see the ancient power hacksaw I got? heh
00:51 GuShH still restoring it
00:51 GuShH cute tiny thing. and just yesterday got offered a british made hydraulic one.... doh.
00:52 GuShH but, that one costs twice as much. I wonder if it's worth a shot though, I can always sell one or the other.
00:52 GuShH there's a very nice bridgeport clone with DRO and a few nice sets of tooling, but the seller never replied my messages... for all I know he's dead.
00:53 MrCurious GuShH's tool restoration servicec
00:53 GuShH not really
00:53 GuShH I just said I wouldn't buy new china shit anymore and that's it.
00:53 GuShH you should do the same, everyone in the US should.
00:53 GuShH have China be your bitch, not you their's.
00:55 GuShH MrCurious: all of these places look kinda terrible to me http://mla-s2-p.mlstatic.com/fresadora-combinada-con-control-electrico-16769-MLA20125468083_072014-F.jpg
00:55 MrCurious interesting http://hackaday.com/2014/08/03/brushless-dc-motor-used-for-high-speed-cnc-spindle/
00:55 GuShH and just why won't people oil their machines it's beyond me
00:55 GuShH I ... no words.
00:55 MrCurious my jointer got rained on and rusted
00:55 GuShH MrCurious: yeah seen one with water jacket and all
00:56 GuShH oh an old machinist would argue it's not rust, it's a patina
00:56 GuShH then he would get hit with a wrench.
00:56 GuShH ER16 is on the tiny side, but what's the total cost?
00:57 GuShH can't you get a water cooled spindle for 90 bucks, yeah I know from china, but so is that brushless.
00:57 GuShH hey you'll need a lathe to make one of those!
00:57 GuShH perfect excuse
00:58 GuShH god damn china. that machine has plastic handles... a 4k machine with plastic handles.
00:58 GuShH well more like 5k here
00:58 GuShH I can't even comprehend this.
00:59 GuShH yes let's cast all this iron, make these steel parts... handles? PLASTIC. worth 20 jewpoints, that's about half a bag of rice ding ding ding.
01:00 GuShH but yeah knee with DRO is a good way to go
01:00 GuShH assuming the rulers work
01:03 MrCurious i hate super heavy machines
01:03 MrCurious PITA to move
01:03 GuShH http://mla-s2-p.mlstatic.com/fresadora-combinada-con-control-electrico-16757-MLA20125468770_072014-F.jpg
01:04 GuShH that's an asian clone
01:04 GuShH taiwan probably
01:04 GuShH they're easy to take apart by comparison to the real deal
01:04 GuShH but sure, still a pain to move.
01:04 MrCurious motorized axis's
01:04 GuShH that mill-drill weighs quite a bit though, but easy to move.
01:04 GuShH MrCurious: yes power feed and dro
01:04 GuShH geared head
01:04 GuShH tapping mode
01:05 GuShH and it's a universal
01:05 GuShH you can tilt the turret and do horizontal milling.
01:05 GuShH ie. turn it 180°
01:05 GuShH it's an OK-ish combo if it's from taiwan (better than china)
01:06 GuShH http://mla-s2-p.mlstatic.com/fresadora-combinada-con-control-electrico-16757-MLA20125468770_072014-F.jpg what a mess
01:06 GuShH oil. just oil.
01:06 GuShH that's all it takes.
01:07 GuShH I've never had any issues with rusting, of anything...
01:07 MrCurious nice
01:07 MrCurious and you have aquired this?
01:07 GuShH I didn't say that, I said I enquired and the guy never answered
01:07 GuShH I'm interested.
01:08 GuShH a bridgeport (actual) would cost 40% more
01:09 GuShH I technically have the space, it's just needs to be cleared.
01:09 GuShH and 3 phase is already available here.
01:10 GuShH come new year this type of machine will most likely become too expensive for anyone to buy, realistically speaking.
01:10 GuShH I know what's going to happen here..
01:10 ShH goes to sleep
01:11 MrCurious sleep well
01:11 GuShH MrCurious: you didn't say if the drillpress you got required any work done, what type it was...
01:12 MrCurious floor standing one
01:12 GuShH could be anything
01:12 MrCurious he said the belt is lose and slips
01:12 GuShH I'll take that as an import
01:13 MrCurious no idea
01:13 MrCurious free is free
01:13 GuShH true
01:13 GuShH just adjust the motor, should be on a hinge...
01:13 MrCurious and i would love to have the capability to end drill a 4' aluminium board
01:13 GuShH usually spring loaded
01:13 MrCurious yeah
01:13 GuShH mine is like that
01:13 GuShH but it's a bench one
01:13 MrCurious i have a bench one
01:14 MrCurious want a BIG ASSED one
01:14 GuShH I replaced the bearings, added a preload nut, just pimped it out now it works fine
01:14 GuShH MrCurious: an axial one? :)
01:14 GuShH those are neat
01:14 MrCurious i have no information on it :)
01:14 MrCurious i have to wait a week or two
01:15 GuShH aww
01:18 GuShH MrCurious: one of the first cuts of the saw http://gushh.net/tmp/dscn5888f.jpg
01:18 GuShH 1"
01:18 GuShH with 2" it was clear I need to add a coolant pump
01:18 MrCurious my new miter saw is most pleasing
01:18 MrCurious the metal cutting band saw is in dire need of a real blade
01:19 GuShH blade quality is a big part of it
01:19 MrCurious yup will need a carbide one for it
01:19 GuShH MrCurious: I like the vise on this thing, clamps very well
01:19 GuShH bi-metal is fine but easier to damage
01:20 MrCurious yeah, used it to trim some steel rods
01:20 ShH needs to give her a paint
01:22 GuShH and "tramming" since it's about 0.04mm off
01:41 rue_mohr2 image update for arm8
01:41 rue_mohr2 please stand by
01:41 rue_mohr2 or, have a seat, here is a chair...
01:41 rue_mohr2 side piece sketch (to scale) http://ruemohr.org/~ircjunk/robots/arm8/p1060459.jpg
01:42 rue_mohr2 official drafting http://ruemohr.org/~ircjunk/robots/arm8/p1060460.jpg
01:42 rue_mohr2 printed templatehttp://ruemohr.org/~ircjunk/robots/arm8/p1060461.jpg
01:42 rue_mohr2 printed template http://ruemohr.org/~ircjunk/robots/arm8/p1060461.jpg
01:42 rue_mohr2 matched to orig drawing well (dimentions are rounded to logical values) http://ruemohr.org/~ircjunk/robots/arm8/p1060463.jpg
01:43 MrCurious what will it be when it grows up
01:43 rue_mohr2 make more PVC sheets http://ruemohr.org/~ircjunk/robots/arm8/p1060465.jpg
01:43 rue_mohr2 mmm nice sheets http://ruemohr.org/~ircjunk/robots/arm8/p1060466.jpg
01:43 rue_mohr2 glue on template http://ruemohr.org/~ircjunk/robots/arm8/p1060469.jpg
01:43 rue_mohr2 http://ruemohr.org/~ircjunk/robots/arm8/p1060470.jpg
01:44 rue_mohr2 cut it out http://ruemohr.org/~ircjunk/robots/arm8/p1060471.jpg
01:44 rue_mohr2 http://ruemohr.org/~ircjunk/robots/arm8/p1060472.jpg
01:44 rue_mohr2 http://ruemohr.org/~ircjunk/robots/arm8/p1060473.jpg
01:44 rue_mohr2 http://ruemohr.org/~ircjunk/robots/arm8/p1060474.jpg
01:44 rue_mohr2 http://ruemohr.org/~ircjunk/robots/arm8/p1060475.jpg
01:44 rue_mohr2 duplicate it http://ruemohr.org/~ircjunk/robots/arm8/p1060476.jpg
01:44 rue_mohr2 http://ruemohr.org/~ircjunk/robots/arm8/p1060477.jpg
01:45 rue_mohr2 http://ruemohr.org/~ircjunk/robots/arm8/p1060478.jpg
01:45 rue_mohr2 http://ruemohr.org/~ircjunk/robots/arm8/p1060479.jpg
01:45 rue_mohr2 http://ruemohr.org/~ircjunk/robots/arm8/p1060480.jpg
01:45 rue_mohr2 http://ruemohr.org/~ircjunk/robots/arm8/p1060481.jpg
01:45 MrCurious but what IS it
01:45 rue_mohr2 plan out the gear location http://ruemohr.org/~ircjunk/robots/arm8/p1060486.jpg
01:46 rue_mohr2 locate servo holes http://ruemohr.org/~ircjunk/robots/arm8/p1060487.jpg
01:46 rue_mohr2 and other holes http://ruemohr.org/~ircjunk/robots/arm8/p1060488.jpg
01:46 rue_mohr2 use the first few holes to hold everything in place for simotanious shaping http://ruemohr.org/~ircjunk/robots/arm8/p1060491.jpg
01:47 rue_mohr2 drill all holes http://ruemohr.org/~ircjunk/robots/arm8/p1060492.jpg
01:47 rue_mohr2 do finish shaping on outter perimiter http://ruemohr.org/~ircjunk/robots/arm8/p1060493.jpg
01:47 rue_mohr2 MrCurious, hold on..
01:47 rue_mohr2 all shaped, seperate http://ruemohr.org/~ircjunk/robots/arm8/p1060494.jpg
01:48 rue_mohr2 no wait, one last holehttp://ruemohr.org/~ircjunk/robots/arm8/p1060496.jpg
01:48 rue_mohr2 http://ruemohr.org/~ircjunk/robots/arm8/p1060498.jpg
01:48 rue_mohr2 mesh check, pass (barely) http://ruemohr.org/~ircjunk/robots/arm8/p1060499.jpg
01:48 rue_mohr2 http://ruemohr.org/~ircjunk/robots/arm8/p1060500.jpg
01:49 rue_mohr2 strip off template ... wtf, wont come, off, WD40 works... http://ruemohr.org/~ircjunk/robots/arm8/p1060501.jpg
01:49 rue_mohr2 http://ruemohr.org/~ircjunk/robots/arm8/p1060502.jpg
01:49 rue_mohr2 http://ruemohr.org/~ircjunk/robots/arm8/p1060503.jpg
01:49 rue_mohr2 http://ruemohr.org/~ircjunk/robots/arm8/p1060504.jpg
01:49 rue_mohr2 http://ruemohr.org/~ircjunk/robots/arm8/p1060505.jpg
01:49 rue_mohr2 arm sides mounted to bracket... http://ruemohr.org/~ircjunk/robots/arm8/p1060506.jpg
01:50 rue_mohr2 test fitting http://ruemohr.org/~ircjunk/robots/arm8/p1060510.jpg
01:50 rue_mohr2 set up linkage from shaft to gear http://ruemohr.org/~ircjunk/robots/arm8/p1060511.jpg
01:50 rue_mohr2 good ole coathanger pins http://ruemohr.org/~ircjunk/robots/arm8/p1060512.jpg
01:51 rue_mohr2 http://ruemohr.org/~ircjunk/robots/arm8/p1060513.jpg
01:51 rue_mohr2 http://ruemohr.org/~ircjunk/robots/arm8/p1060515.jpg
01:51 rue_mohr2 http://ruemohr.org/~ircjunk/robots/arm8/p1060516.jpg
01:51 rue_mohr2 http://ruemohr.org/~ircjunk/robots/arm8/p1060517.jpg
01:51 rue_mohr2 http://ruemohr.org/~ircjunk/robots/arm8/p1060521.jpg
01:51 rue_mohr2 retaining clips to hold it in http://ruemohr.org/~ircjunk/robots/arm8/p1060524.jpg
01:52 rue_mohr2 drive sandwhich http://ruemohr.org/~ircjunk/robots/arm8/p1060525.jpg
01:52 rue_mohr2 http://ruemohr.org/~ircjunk/robots/arm8/p1060526.jpg
01:52 rue_mohr2 all drives ok
01:52 rue_mohr2 god damn this is a lot of images
01:52 rue_mohr2 nowonder I never do this
01:53 rue_mohr2 bar for operating forearm http://ruemohr.org/~ircjunk/robots/arm8/p1060528.jpg
01:53 rue_mohr2 http://ruemohr.org/~ircjunk/robots/arm8/p1060530.jpg
01:53 rue_mohr2 http://ruemohr.org/~ircjunk/robots/arm8/p1060531.jpg
01:53 rue_mohr2 upper arm mounting plates http://ruemohr.org/~ircjunk/robots/arm8/p1060532.jpg
01:53 rue_mohr2 I blew the angle a bit http://ruemohr.org/~ircjunk/robots/arm8/p1060535.jpg
01:54 MrCurious i would have packaged them into a web page...
01:54 rue_mohr2 make straddle for the operating lever http://ruemohr.org/~ircjunk/robots/arm8/p1060537.jpg
01:54 rue_mohr2 people refuse to just use the links in the page dir
01:54 rue_mohr2 http://ruemohr.org/~ircjunk/robots/arm8/
01:54 rue_mohr2 first of 3 wrong bracketshttp://ruemohr.org/~ircjunk/robots/arm8/p1060540.jpg
01:54 rue_mohr2 first of 3 wrong brackets http://ruemohr.org/~ircjunk/robots/arm8/p1060540.jpg
01:55 rue_mohr2 jist of the hinged joint http://ruemohr.org/~ircjunk/robots/arm8/p1060542.jpg
01:55 rue_mohr2 4th time is the charm http://ruemohr.org/~ircjunk/robots/arm8/p1060544.jpg
01:55 rue_mohr2 lots of work to make the clearance right http://ruemohr.org/~ircjunk/robots/arm8/p1060545.jpg
01:56 rue_mohr2 had to flush down the centre on the gears http://ruemohr.org/~ircjunk/robots/arm8/p1060546.jpg
01:56 rue_mohr2 used lathe, easy http://ruemohr.org/~ircjunk/robots/arm8/p1060547.jpg
01:56 rue_mohr2 clears now http://ruemohr.org/~ircjunk/robots/arm8/p1060548.jpg
01:56 rue_mohr2 http://ruemohr.org/~ircjunk/robots/arm8/p1060549.jpg
01:56 rue_mohr2 BUT where is my past image
01:57 rue_mohr2 er last image
01:58 rue_mohr2 MrCurious, you might also notice the dir its in, is called arm 8
01:58 rue_mohr2 aka robot arm number 8
01:58 rue_mohr2 :)
02:02 rue_shop2 arm 8 is a variation of 7, which is a varriant of 4
02:02 rue_shop2 which is a model of an ABB IRB 1400
02:03 rue_shop2 http://ruemohr.org/~ircjunk/robots/arm4/p1050046.jpg
02:04 rue_shop2 I like 4, buts its slow as all hell on account of the steppers
02:15 MrCurious continous rotation servo's?
02:20 rue_mohr2 no
02:20 rue_mohr2 I get 180 out of the servos, I gear it to what I want
02:20 rue_mohr2 which is mostly less than 180 on an arm
02:21 rue_mohr2 (arm 4 is just geared stepper motors)
02:27 rue_mohr2 1:1 template of the side of the arm http://ruemohr.org/~ircjunk/robots/arm8/arm8side.pdf
02:28 rue_mohr2 now you too can make one! ;)
02:28 MrCurious why not go with a worm gear instead
02:28 rue_mohr2 on which axis?
02:28 MrCurious all
02:29 rue_mohr2 with the servo or with dc motor?
02:29 rue_mohr2 one of my goals with these was that they be back-drivable
02:30 MrCurious then sensors to drive the the motors when it senses force feedback
02:31 rue_mohr2 using servos was also about a quick-and-dirty robot arm
02:31 rue_mohr2 it let me focus more on things like control software
02:32 rue_mohr2 I plan on a dc motor based servo robot
02:32 rue_mohr2 http://ruemohr.org/~ircjunk/robots/arm6/p1050022.jpg
02:32 rue_mohr2 arm6 is meant to be such of nature
02:32 rue_mohr2 :)
02:33 rue_mohr2 but I'm having problems with gear trains stripping
02:33 rue_mohr2 trouble gathering gearboxes of the right size
02:43 iveevue rue_mohr2, What are you making?
02:56 rue_mohr2 its a robot arm
02:56 rue_mohr2 you gonna ask why I'm making it?
02:58 rue_mohr2 maybe I should get the bot going again, and make an irc interface to creating project pages
02:59 rue_mohr2 yea I need to take more overall photos as I go
03:03 rue_mohr2 overall photos, I'm done for the night http://ruemohr.org/~ircjunk/robots/arm8/p1060552.jpg
03:03 rue_mohr2 http://ruemohr.org/~ircjunk/robots/arm8/p1060553.jpg
03:16 rue_bed I'm not sure what to do with the wrist yet
03:18 rue_bed I found a set of synchro pullies, but what I did last time takes a few sets
03:20 rue_bed space bar is acting up, thats annoying
03:21 rue_bed I'm playing with the idea of reversing the last two axies
03:22 rue_bed make it pitch on the rotation instead of rotating on the pitch
03:24 rue_bed I have a few bevel gears left...
03:24 rue_bed I wonder if I can do concentric shafts
03:27 rue_bed hmm
03:27 rue_bed too bad I cant get 3/8 pvc pipe
03:27 rue_bed maybe if the upper arm were upgraded to 3/4
03:29 rue_bed then 1/2 could be used as in inner shaft, with 6mm inside that
03:29 rue_bed bearings would be a problem
11:22 rue_mohr2 NO comments since last night?
11:28 deshipu got it to walk and turn controlled by a joystick \o/
11:30 Hyratel1 woot
11:30 rue_mohr2 sweet
11:30 rue_mohr2 whats the control code written in?
11:31 deshipu arduino and python
11:31 deshipu arduino is mostly just a dumb servo controller
11:31 rue_mohr2 tyea, its the python
11:31 rue_mohr2 pygame?
11:31 deshipu yes
11:32 rue_mohr2 I was surprised how easy to set up it was
11:36 deshipu well, I've been making games with pygame for several years already, so no surprises there :)
11:49 rue_shop2 can you suggest an interface to control a 6 axis robot arm?
11:53 Hyratel1 "Don the glove of the inquisition!" *snap*
11:53 Hyratel1 rue_shop2, with or without IK?
12:14 rue_mohr2 anyway, I'm pondering the best interface for realtime control of a robot arm
12:14 rue_mohr2 less anything that needs a kinect
12:15 rue_mohr2 http://ruemohr.org/~ircjunk/robots/arm7/p1060364.jpg
12:16 rue_mohr2 I'm wondering if I should make a dummy sensor control arm
12:16 rue_mohr2 I have to say, pots would be way easier to hook up to the axies than motors
12:16 Hyratel1 rue_mohr2, thayt's an industrially-common mode of control
12:17 Hyratel1 heck, i saw it in FIRST robotics once
12:17 rue_mohr2 but two joysticks looks pretty cool
12:17 rue_mohr2 big ones on the sides of a chair
12:17 rue_mohr2 with foot pedals
12:17 rue_mohr2 and long throw levers...
12:17 rue_mohr2 and laser eyes!
12:18 rue_mohr2 and freeway onramps for arms!
12:18 rue_mohr2 wait, that not cute
12:19 rue_mohr2 I suppose I should get out of my pajamas
12:22 rue_shop2 I thinkI need to sit down and make robot hands for a bit
12:22 rue_shop2 I need two now
12:22 rue_shop2 should I make one to sell on ebay?
12:51 rue_shop2 anyone want a template for the baseplate of that gripper?
12:51 rue_shop2 oh I can jom a finger template in here too
12:51 rue_shop2 jam
13:04 robotust1a MrCurious: morning
13:04 robotust1a morning
13:11 rue_shop2 http://ruemohr.org/~ircjunk/robots/arm7/p1050963.jpg
13:11 rue_shop2 I have to make a stock of grippers, think I should make one for ebay?
13:12 rue_shop2 robotust1a, ?
13:14 rue_shop2 maybe the channel needs cleaning out again
13:45 robotust1a rue_shop2: what about repeatability?
13:47 rue_shop2 your right, i should repeatedly clean it out
13:47 robotust1a rue_shop2: you are going to do a small bunch or just one?
13:47 robotust1a :)
13:47 rue_shop2 robotust1a, if you want 1 thou repeatable accuracy on a gripper go pay for it :)
13:47 rue_shop2 I need 2
13:47 rue_shop2 might as well do 3
13:48 robotust1a I can make my own grippers, I have 3d printer now
13:48 robotust1a as many as I need, and sell them on ebay as well :)
13:48 rue_shop2 so why aren't you doing it
13:49 robotust1a rue_shop2: do you want some?
13:49 rue_shop2 I dare you to make one like my design there :)
13:49 rue_shop2 http://ruemohr.org/~ircjunk/robots/arm7/p1050963.jpg
13:49 rue_shop2 did you see?
13:49 robotust1a I want to make 16 DOF prostetic human-like hand
13:50 rue_shop2 yup, I'm gaining experience to get me there
13:50 rue_shop2 maybe later I'll work on the printer
13:50 robotust1a sure, very useful thing
13:50 robotust1a I print almost every day
13:51 robotust1a already printed like 700 meters of filament
13:51 robotust1a in 1 month
13:51 rue_shop2 what have you made?
13:52 robotust1a robot neck, robot torso, robot backbone
13:52 rue_shop2 is it top secret or do you have images posted?
13:52 robotust1a now I'm upgrading printer itself. on progress
13:52 robotust1a no I didn't post yet
13:52 robotust1a I have to print skull
13:53 rue_shop2 well, cmon, nows a good time to take some pics and post em
13:53 robotust1a and assemble
13:53 robotust1a I'm at work
13:53 robotust1a 1)
13:53 robotust1a 2) I don't show unfinished work
13:53 rue_shop2 so, you could have done nothing and we wouldn't know the difference?
13:53 robotust1a if it will move
13:54 robotust1a you'll see the diff after I publish
13:54 rue_shop2 I'm on (conservativly) my 8th arm
13:54 robotust1a you arms are simple 2DOF grippers
13:54 rue_shop2 every robot I make is a great foundation for the next arm
13:54 rue_shop2 that last one, and this one are 6dof
13:55 robotust1a sure, but it has only 2 fingers
13:55 robotust1a what about 5 fingers?
13:55 robotust1a and good dexterity?
13:55 rue_shop2 I'll work on that later
13:56 robotust1a are you going to work on arms only?
13:56 robotust1a where the platform?
13:57 rue_shop2 arms are just fun and easy
13:57 robotust1a ok, what is not for easy?
13:57 rue_shop2 when I get the basic arm design down that I like, all scale it up and have room for the mtoors to do more complex hands
13:58 robotust1a but when?
13:58 robotust1a life is shorter than you plan
13:58 rue_shop2 yea
13:59 rue_shop2 I'll see, I only learn so fast
14:00 rue_shop2 faster I build, the more I learn
14:00 rue_shop2 that last arm took me shy of a week to make
14:01 robotust1a I forget how old are you?
14:01 rue_shop2 I think thats pretty good
14:01 rue_shop2 105
14:01 robotust1a in dogs years?
14:02 rue_shop2 tortise years?
14:02 robotust1a I don't like when arms do "z-z-z-z-zzzzzzzzz.. zzzzzzzzzzzz..." sounds
14:02 robotust1a does yours?
14:02 rue_shop2 you like shhhhhhhhhhhhhhhhhhhhh shhhhhhhhhhhhh shhhh
14:02 robotust1a no sound
14:03 rue_shop2 hey I'm just using hobby servos to get some quick results
14:03 rue_shop2 my old arms are stepper
14:03 rue_shop2 I have a few in the works that are dc servo
14:03 rue_shop2 but I keep stripping my gearboxes :)
14:03 robotust1a stepers are also loud
14:03 rue_shop2 yea
14:04 rue_shop2 as soon as I work out how to control complimentrary air muscles I'll get one done with that
14:04 rue_shop2 right now, I can only do servo control of single acting
14:05 rue_shop2 complimentrary is an interesting problem, you can change the position and the loop damping depending on which side you spill/fill
14:05 rue_shop2 I cant wrap my head around how to control it
14:05 rue_shop2 yet
14:05 robotust1a i saw your air muscle, it does "phffffffffff.... phffff."
14:06 rue_shop2 yea sometimes it makes some pretty good fart noises
14:06 robotust1a I don't like the sound
14:06 rue_shop2 so what are you using?
14:06 robotust1a Canadians are so loud I should admit
14:07 robotust1a DC motors
14:07 robotust1a I plan to use
14:07 rue_shop2 custom loop controller or commercial?
14:07 robotust1a yes
14:07 rue_shop2 ?
14:08 rue_shop2 buddy uses vending machine dc gear motors, an atmega32 manages 4 servo loops ea
14:08 rue_shop2 they make noise too
14:09 rue_shop2 18 axies of currently borked overload control :)
14:09 rue_shop2 the pwm pulses set off the overloads
14:10 robotust1a custom
14:10 rue_shop2 so you havn't had the chance to set up and test axies for what you want to use?
14:10 robotust1a I will not use gers
14:10 robotust1a gears*
14:10 rue_shop2 what you gonna use to get your torque
14:10 robotust1a secret
14:11 robotust1a it's evident actually
14:12 robotust1a if I'll succseed I'll tell you
14:12 rue_shop2 sweet, the nibbler I got just solved a problem
14:13 rue_shop2 so you have just the one project tho?
14:13 robotust1a but now I didn't try yet, if it will work - I'll tell
14:13 robotust1a what do you mean?
14:13 rue_shop2 if your robot dosn't work, 100% of your robots will be a failure...
14:14 rue_shop2 I love this 'glue on template and cut out metal' method
14:16 robotust1a nom I just invent other type of actuator
14:16 robotust1a no
14:16 robotust1a that's it
14:16 robotust1a the skeleton and joints are ok
14:17 rue_shop2 good show
14:17 rue_shop2 I'd like to try something new with the 12' mecha
14:18 rue_shop2 construction thru successive upgrade
14:18 rue_shop2 build it out of plastic pipe, and gradually upgrade it into a fully working robot
14:18 robotust1a you know, robots are not growing by itself like humans, so you have to make them exactly the size you want
14:19 rue_shop2 last night I found out that a #32 bit worked its way into the 7/64 slot on the drill set, that screwed me up
14:19 rue_shop2 robotust1a, I'm really good at building things without a plan
14:20 rue_shop2 http://ruemohr.org/~ircjunk/robots/arm7/p1060456.jpg
14:20 rue_shop2 that is
14:20 rue_shop2 http://ruemohr.org/~ircjunk/robots/arm7/p1060364.jpg
14:20 rue_shop2 that
14:20 rue_shop2 pretty good eh?
14:21 robotust1a yes
14:22 robotust1a good for kid to play in school
14:22 robotust1a 10-14 years old
14:22 robotust1a do something seroius! finally
14:23 robotust1a you already have a lot of experience
14:23 robotust1a controllers/pneumo/servos/machine shop
14:23 rue_shop2 pff, this is a hobby
14:23 rue_shop2 I have a day job
14:23 robotust1a I have too, and what?
14:24 robotust1a it's all about your perception of reality
14:24 rue_shop2 ?
14:24 robotust1a more complex things - more pleasure for brain
14:25 robotust1a you don't wanna climb the hill of complexity
14:25 rue_shop2 I'm not interested and wouldn't have fun detailing everty nuance of a project and then joint to put it togethor and find out it dosnt' work
14:25 robotust1a some ppl do rockets to fly to the space
14:26 robotust1a rue_shop2: then take apart and use for other project
14:26 rue_shop2 none of my stuff is ever gonna see production, so completely designing it out and intercopmpatability dont fly far
14:26 robotust1a what's up?
14:26 rue_shop2 sometimes I do
14:26 robotust1a so
14:26 robotust1a doesn't work from 1st time - it's not a tragedy
14:26 robotust1a usually I succeed from 2nd attempt
14:29 rue_shop2 oo this came out nice...
14:30 robotust1a you means you 17th?
14:31 robotust1a sure nice, now you'll spend the rest of the life just watching it?
14:33 flwico elELO
14:33 flwico sDF
14:35 rue_shop2 so, what do you use for designing the parts you print?
14:36 robotust1a T-flex
14:36 robotust1a + export to STL
14:37 robotust1a and I used Meshlab to fix stl sometimes
14:38 robotust1a you can use any cad
14:38 robotust1a ppl like OpenSCAD
14:38 robotust1a text -> STL
14:39 rue_shop2 yea, i was looking at scad and can see use for it, but can see the limitations,
14:39 rue_shop2 back in the day I used to work with povray
14:40 deshipu look what I found http://forums.trossenrobotics.com/showthread.php?7021-legtool
14:41 rue_shop2 windows only, huh
14:42 rue_shop2 where did I put my project donw?
14:43 robotust1a I use t-flex in virtual machine
14:43 robotust1a under linux now
14:44 robotust1a openscad limits me as well
14:44 rue_shop2 hmm, have to find some more lexan
14:44 robotust1a especially the time of development
14:48 rue_shop2 white, clear, or orange fingers?
14:50 robotust1a do it black
14:50 flwico pUrPLe
14:51 rue_shop2 I dont ahve black
14:52 rue_shop2 oh I have grey
14:54 robotust1a are you makeing arm #8?
14:55 rue_shop2 yea
14:55 rue_shop2 its based on 7
14:55 rue_shop2 which is based on 4
14:55 rue_shop2 which is based on the ABB irb 1400
15:00 rue_shop2 so, what drill is 1 size up from 1/8"
15:00 rue_shop2 3.5mm
15:01 flwico iT dRiLLs 3.5mm jACk iN FoNEs ?
15:01 robotust1a in imperial?
15:02 robotust1a 5/32
15:02 rue_shop2 no, in anything
15:03 rue_shop2 I have a chart I made with imperial, metric, letter, and number sizes
15:03 Tom_itx #30 is .1285
15:03 rue_shop2 by order of size
15:03 Tom_itx 3.5mm is .1378
15:04 robotust1a 1/8 is 3.175
15:04 robotust1a mm
15:04 robotust1a I have all drillbits like 3.2, 3.3, 3.4, 3.5 so the question is irrelevant
15:05 robotust1a and I can mill any hole with 0.05 mm step
15:06 Tom_itx but can you edm any hole in .005mm steps?
15:06 robotust1a I can do in 0.01
15:06 rue_shop2 1/8 0.1250 3.1750
15:06 rue_shop2 0.1378 3.5000
15:07 robotust1a 0.004 is the theoretical resolution of my cnc
15:07 robotust1a oh, no
15:07 robotust1a 1/6000 of inch
15:07 rue_shop2 with 1/2mm metric drill index, its the smallest step up I have from 1/8
15:08 robotust1a it's 0.0004"
15:08 robotust1a and about 0.002 mm
15:08 rue_shop2 mine is (XYZ) 1/14400",1/19200",1/16000"
15:08 robotust1a so I can resolve 0.005mm step, but just theoretically
15:09 robotust1a show me
15:09 rue_shop2 but its so slow its useless
15:09 rue_shop2 400 steps/rev -> 2:1 -> drive rods
15:09 robotust1a I usually mill with 0.05 mm precision
15:10 rue_shop2 20/18/32 tpi
15:10 robotust1a I have 200 steps 1:3 + 10 rev per inch
15:10 robotust1a 3*200*10 = 6000 steps per inch
15:11 rue_shop2 http://ruemohr.org/~ircjunk/projects/cnc/p1030107.jpg
15:11 rue_shop2 it was made in 2000
15:12 robotust1a is it still working
15:12 rue_shop2 5.5"x11.5" (I screwed up the carrige overheads)
15:12 rue_shop2 yes
15:12 rue_shop2 I use it to make cut-n-nut
15:12 rue_shop2 http://ruemohr.org/~ircjunk/cut-n-nut/cut-n-nut.html :)
15:12 robotust1a mine is finished in 2012
15:13 Tom_itx mine steps 40,000 per inch
15:13 rue_shop2 cut-n-nut is great for rapid prototyping
15:13 robotust1a Tom_itx: too fine
15:13 rue_shop2 hah
15:13 Tom_itx 10 microstep
15:13 robotust1a your's is professional and steel
15:14 robotust1a I didn't count mictosteps
15:14 Tom_itx rue_shop2, why aren't you working?
15:14 rue_shop2 mine is made of lightweight, ruggid aluminum
15:14 robotust1a I don't beleive in mictosteps
15:14 rue_shop2 its a holiday
15:14 Tom_itx well you're missing out then
15:14 Tom_itx the drivers also have DSP in them to smooth the power band
15:15 rue_shop2 I should mount a jigsaw upside down to a table for cutting out parts
15:15 Tom_itx or make a band saw
15:15 Tom_itx you'd have to get a band together first though
15:16 Tom_itx we cut Ti with the bandsaw
15:17 robotust1a actually I have 8 microsteps
15:17 robotust1a but 6000 is more than enough
15:18 robotust1a for aluminium portal construction
15:19 rue_shop2 aha! your not an insurance salesman!
15:20 robotust1a ?
15:20 rue_shop2 I have a great bandsaw, but a bunch of the aluminum parts were crap and fell apart, so I'm rebuilding it
15:21 rue_shop2 I'm not gung-ho for making as many hands as I thought I was
15:21 robotust1a I did my mill from scratch I'm sure in aluminium, but the router I did - it has some limitations with presicion itself
15:22 robotust1a I can remake it to make it precise, but there is no need, I'm not milling stainless steel for weapon
15:22 robotust1a firearm
15:23 rue_shop2 arg, I hate it when the stuff wont peel off the lexan
15:24 robotust1a home
15:28 rue_shop2 yay! zero binding
16:00 rue_shop2 hmm if I only have the energy to sit in a chair, I might as well cut out the other 3
17:27 InsideJob I made a cool hat look: http://i.imgur.com/lYRRBMV.jpg
17:35 flwico g0vErNOr oF p0kEr ?
17:35 InsideJob the COOLEST of KEWL
17:36 flwico HoLDs uR sKuLL ?
17:36 flwico eLSe uR bRAiN bLobs OuT ?
17:38 InsideJob no it holds fans around my head and i got 2 batteries that power them at the back this keeps my head cool in 40 degree heat
17:54 rue_shop2 I want to build lots of robots, but I dont want any of them to be the same
17:55 rue_shop2 :) summer inspired air condidiotner, cute
17:55 InsideJob Thanks rue!
17:55 InsideJob Here's another photo: http://i.imgur.com/O7pAtR9.jpg
17:57 Tom_itx just don't let your hair get too long
17:57 rue_shop2 cnc?
17:57 Tom_itx i need a chunk of HDPE
17:58 e_shop2 hands tom a piece of pipe and a h
17:58 rue_shop2 http://ruemohr.org/~ircjunk/tutorials/mech/p1010110.jpg
17:59 InsideJob workign on it, got some badass trapezoid thread and some heavy duty boxsteel, custom made some rails for it, but paused work because it got too hot and worked on the cool hat just so I could THINK
18:11 InsideJob made it with circular hole cutters and a drill press
20:54 rue_shop2 hmm
20:54 rue_shop2 debating ik chain for this robot arm
20:54 rue_shop2 the last one is
20:55 rue_shop2 base rotate -> shoulder -> elbow ->wrist pitch -> wrist rotate -> gripper
20:55 rue_shop2 I'm pondering
20:55 rue_shop2 base rotate -> shoulder -> elbow -> wrist rotate -> wrist pitch -> gripper
20:57 rue_shop2 it would mean that it couldn't rotate objects in any angle
20:57 rue_shop2 I cant think of any advantages
20:57 ace4016 mechanical limitations?
20:58 rue_shop2 I'm out of matching synchro pullies, I think
20:58 rue_shop2 arm7 used 3 sets of matched pullies
21:18 rue_shop2 I'm not solvibng this probelm
21:18 rue_shop2 I am falling asleep in the chair tho
21:32 robotustra MrCurious: http://i.imgur.com/dC68Px0.png
21:36 rue_mohr2 are the holes in the bottom for magnets?
21:39 robotustra yes and for glue
21:39 robotustra I will put magnets _ JB weld
21:39 robotustra +
21:41 GuShH robotustra: why do you even bother with plastic?
21:42 robotustra ?
21:42 robotustra what do you mean?
22:06 rue_mohr2 hahahaha
22:06 rue_mohr2 I took my credit card sized $1 chinese calculator out of my wallet cause it didn't work
22:06 rue_mohr2 I just accidently ran it thru the wash
22:06 rue_mohr2 it works now
22:06 Tom_itx water powered?
22:07 rue_mohr2 hahaha it was $1
22:07 rue_mohr2 its solar
22:07 rue_mohr2 maybe the connections were loose and it took all the impact of going around int eh dryer to reconnect them
22:07 rue_mohr2 hahahahhaahha
22:10 Tom_itx i've pulled a few mp3 players outta the wash
22:10 Tom_itx managed to recover em
22:14 rue_mohr2 the $3 ones from china?
22:14 rue_mohr2 you just pull the flash card out...
22:15 Tom_itx the lcd was wet too
22:21 GargantuaSauce nice progress deshipu
22:22 GargantuaSauce the micro quad has a somewhat hectic look about it
22:22 GuShH GargantuaSauce: scrollback?
22:23 GargantuaSauce i checked my youtube feed
22:23 GargantuaSauce was off irc all day because of power outage
22:23 GuShH aw
22:23 GargantuaSauce referring to https://www.youtube.com/watch?v=CZxhB_2w_9M
22:25 rue_mohr2 uh
22:25 GargantuaSauce uh?
22:26 rue_mohr2 would you send me some dimentions for your robot and let me maybe write you some control software?
22:26 rue_mohr2 not full mechanical, just interjiont
22:27 GargantuaSauce i am sure he has improvements on the table
22:29 rue_mohr2 I suspect there is no movement rate control?
22:29 rue_mohr2 aka, it moves as fast between the control poits as it can?
22:29 rue_mohr2 can I see the arduino sketch for it?
23:38 MrCurious something tells me that the steps per MM/INCH is encoded in marlin
23:40 rue_mohr2 you know about config.h right?
23:40 rue_mohr2 I think like everything is in there
23:41 MrCurious had to make a new entry in pins.h for my board
23:41 rue_mohr2 logial
23:41 rue_mohr2 ^c
23:41 MrCurious easy there spock
23:44 MrCurious whoops
23:46 MrCurious i think before i set to calibrating distances, the OMG YOU HAVE GONE TOO FAR switches should get wired
23:46 GargantuaSauce sounds like a good idea
23:50 rue_mohr2 I didn't install that switch
23:50 rue_mohr2 just the "yes, yes, your at zero again" switch
23:58 MrCurious mine doesnt differentiate between the OMG_TOO_FAR and _HAPPY_ZERO