#robotics Logs
Jul 15 2017
#robotics Calendar
01:13 AM rue_shop3: i must be getting lazy
01:16 AM rue_shop3: I'm printing sifting screens for first pass capacitor sorting
01:34 AM rue_shop3: ok, I think I worked out how to 3d print shaker bowly
01:34 AM rue_shop3: ok, I think I worked out how to 3d print shaker bowls
01:48 AM anonnumberanon: component sorting machine?
01:49 AM rue_shop3: yea
01:49 AM rue_shop3: the bins are stacking up
01:52 AM rue_shop3: anonnumberanon, any experience with vibrators?
01:52 AM rue_shop3: bowl feeders...
01:52 AM anonnumberanon: lol
01:53 AM anonnumberanon: no man
01:53 AM anonnumberanon: I'd do a computer vision thing and learn the components and stuff. That would keep a man busy for years..
01:53 AM rue_shop3: drat, it looks like quite a thing
01:54 AM rue_shop3: I dont know how to do the ramps tho
01:54 AM anonnumberanon: with a claw that grabs and places
01:54 AM rue_shop3: openscad will have to work something out
01:56 AM anonnumberanon: what happens if there is a diode for instance, with both leads spread apart, getting stuck
02:06 AM rue_shop3: nono, its all presorted
02:06 AM rue_shop3: I have caps in this case
02:06 AM rue_shop3: It didnt' work too bad
02:07 AM rue_shop3: I filtered out at 12mm
02:07 AM rue_shop3: bigger and smaller caps
02:07 AM rue_shop3: I need some kinda slot thing for ceramic caps
02:07 AM rue_shop3: but good news
02:08 AM rue_shop3: filtering thru the bin found one of my missing scope probe tips!
02:08 AM ferdna_winblows: does anyone uses inventory software to keep track of your parts?
02:10 AM rue_shop3: tom does
02:11 AM ferdna_winblows: what software does he use? do you know?
02:11 AM rue_shop3: dos
02:12 AM ferdna_winblows: ?
02:12 AM rue_shop3: it might be a newer version
02:14 AM anonnumberanon: hah nice
02:21 AM rue_shop3: how do I make a filter that pics out ceramic caps?
02:21 AM anonnumberanon: with a narrow slit?
02:21 AM rue_shop3: maybe slots with sides or something
02:21 AM rue_shop3: | |
02:21 AM rue_shop3: / \
02:21 AM rue_shop3: oops, upside down
02:43 AM rue_house: get it to try and flip them sideways
02:44 AM rue_house: \ /\ /\ /\ /\ /\ /\ /\ /
02:44 AM rue_house: hmmm
02:44 AM rue_house: the electrolites shoudl just slide down
02:44 AM rue_house: hmmm
02:44 AM rue_house: use an end-extrusion
02:46 AM rue_house: hmmm, how wide is a caramic cap
02:46 AM rue_house: 3-4mm
02:47 AM anonnumberanon: they get to 15mm or so I've seen
02:47 AM rue_house: thick!?
02:47 AM anonnumberanon: no diameter
02:47 AM anonnumberanon: thick, yeah max 3 mm
02:47 AM rue_house: no, I'm talking thick
02:47 AM anonnumberanon: maybe 4-5 grand max
02:53 AM rue_house: bed is "20cm" so if I go 18cm...
03:07 AM rue_shop3: on my next printer, I'm gonna use belts and gearmotors to lift the Z so there are no threads
03:10 AM rue_shop3: huh
03:10 AM rue_shop3: I want to work on my wax printer, and I forgot to ask the pharmacy about glass cyringes, but it occurs to me, that I would be better off to use metal anyhow
03:11 AM rue_shop3: so I can just make one
03:21 AM rue_shop3: I'm not sure I understand how they get away with using pneumatics for pushing on cylinders for 3d printing
03:21 AM anonnumberanon: i still want to continue my biped project
03:39 AM rue_shop3: why did you stop?
03:43 AM anonnumberanon: started looking for work and then working
03:48 AM anonnumberanon: but mostly it was lack of discipline
04:17 AM anonnumberanon: man what electric motor do i need
04:18 AM anonnumberanon: for my airplane it's weight is about 4 lbs I'd say
04:59 AM rue_shop3: damn, I just watched the clock go from 2am to 2:30am in like, 3mins
05:01 AM anonnumberanon: see a doctor
05:03 AM rue_shop3: my C doctor keeps asking how I feel about what I say
05:28 AM rue_shop3: see, another half hour just vaporized
05:46 AM anonnumberanon: not to me man I'm being productive AF
06:09 AM malcom2073: rue_shop3: Get off the internet :P
06:09 AM malcom2073: The internet does that
06:10 AM rue_bed: I was designing and printing parts
06:11 AM rue_bed: for a vibration sorter, capacitor sifter, and a silicone printer
06:11 AM rue_bed: (well, paste printer)
06:23 AM anonnumberanon: carry on then
06:23 AM anonnumberanon: malcom2073 is new
06:47 AM malcom2073: True haven't quite been here a year yet
06:49 AM veverak: :)
08:14 AM weyland|yutani: rue_ never sleeps one might think he is some kind of AI pretending to be human ;)
09:47 AM anonnumberanon: yeah malcom2073 it takes at least 10,000 hours to be considered intermediate here
09:47 AM anonnumberanon: :)
09:47 AM malcom2073: You made me calculate the number of hours in a year
09:47 AM malcom2073: good job
09:47 AM malcom2073: :P
09:48 AM anonnumberanon: i just clicked on calculator myself lol
09:48 AM anonnumberanon: for 10 hours a day that's more than 3 years
09:48 AM malcom2073: I'm here 24 hours a day
09:49 AM anonnumberanon: (of active IRC presence)
09:49 AM malcom2073: Well shit, that's like, 5 minutes a day haha
09:50 AM anonnumberanon: the butthole of the internet got me here
09:50 AM anonnumberanon: 4chan
01:34 PM rue_shop3: how did 4chan get you to #robotics?
02:18 PM rue_house: I wonder if sparrow1 should be put in for the hackaday prize
02:47 PM rue_house: you know, all the problems I was having were cause I wanted to implement a different accel and decel rate
02:47 PM rue_house: nobody does that
02:51 PM rue_house: even on a system where they can, they are setting them the same
03:27 PM Anniepoo_: oh, strange
03:28 PM Anniepoo_: I wonder how that messes things up
03:28 PM Anniepoo_: &8cD <-- feel need for more brainiac to figure that one out
03:29 PM Anniepoo_: anyway, I have to go change a flat
04:38 PM youngiif: what kind of fasteners should I be using here to prevent nuts from backing off? http://i.imgur.com/MmF1PZe.jpg
04:38 PM youngiif: would if a jam nut (double nut) be the typical fastener used, or if there's something better
04:39 PM SpeedEvil: Double nut works well
04:39 PM SpeedEvil: also, washer under it to allow slip
04:41 PM youngiif: a washer under the nut only, or would there be benefit to placing them in between plastic too, or even behind the head?
04:43 PM SpeedEvil: probably all
04:45 PM youngiif: ok i'lll try that, thanks SpeedEvil
05:02 PM ace4016: i can't be the only person that sees this: https://www.youtube.com/watch?v=gn4nRCC9TwQ and things of this: https://www.youtube.com/watch?v=3rOcO3HRPcA
06:14 PM rue_shop3: huh
07:06 PM rue_shop3: I think I worked it out
07:06 PM rue_shop3: I dont know the time it'll take to finish the accel and start the decel
07:06 PM rue_shop3: but I know the position for the ideal, which will be the ratio of the accel/decel over the distance
07:07 PM rue_shop3: and from that position, I can work everything else out
08:30 PM rue_shop3: anniepoo, !!!!
08:30 PM rue_shop3: the rail is steel!
08:31 PM rue_shop3: I can use magnets to pull the carriage against the rail, into the wheels...
08:31 PM Anniepoo_: ooh
08:31 PM Anniepoo_: yes - old Lionel tains had magnetic wheels
08:32 PM Anniepoo_: and steel track
08:32 PM Anniepoo_: "magnetraction"
08:38 PM rue_shop3: :)
08:38 PM rue_shop3: 8-o
08:38 PM rue_shop3: this is strange....
08:38 PM rue_shop3: the camera picks up the purple filament I got as blue
08:38 PM rue_shop3: like its CLEARLY blue on the camera
08:38 PM rue_shop3: but its purple
08:39 PM rue_shop3: making more progress on the screw sorter
08:39 PM rue_shop3: the putaway mechanism is a project on its own
08:40 PM rue_shop3: the test print for a vibrator bowl came out good, looks like if I sit down and design it all I'm good
08:40 PM Anniepoo_: nice
08:41 PM Anniepoo_: this is gonna be amazing
08:41 PM rue_shop3: wish I could get some advise on them, I dont know typical slopes or anything
08:41 PM rue_shop3: those feeder shakers are a whole science on their own too
08:42 PM rue_shop3: tho it looks pretty try-and-twiddle
08:42 PM Anniepoo_: make a prototype
08:42 PM rue_shop3: I did a stepped bowl without a ramp
08:42 PM rue_shop3: screwed togthor, it'll work
08:42 PM Anniepoo_: you dont need much, just a board, off ctr weight, and motor
08:42 PM rue_shop3: kinda
08:43 PM rue_shop3: the bowls have a twist-and-hop motion created by the way the springs go
08:43 PM rue_shop3: I went to a lot of work to make one, and then realized that I might want a linear one instead...
08:43 PM rue_shop3: meh
08:44 PM rue_shop3: and I still havn't finished trapazoidal code
08:44 PM rue_shop3: I got into a deep sidetrack adding features in my rewrite
08:44 PM rue_shop3: mostly different accel/decel rates
08:44 PM rue_shop3: which I think I have figured out
08:44 PM rue_shop3: have to write code tonight
08:45 PM rue_shop3: {while I'm sleeping?...}
08:56 PM rue_shop3: ugh, oh no
08:56 PM rue_shop3: *just off the top of my head* I know that 1/8 is 3.175mm
08:56 PM rue_shop3: I should have to look that junk up
09:04 PM Anniepoo_: 8cD
09:20 PM rue_house: for the mecha, I need a 2 stroke, 2HP engine
09:20 PM rue_house: or, a mixed fuel 4 stroke
09:20 PM rue_house: or I need to convert a 4 stroke to be 2 stroke, mixed
09:20 PM rue_house: }:]
09:21 PM rue_house: and this is an idea I like
09:21 PM rue_house: so, you move the carb to feed the crank case
09:21 PM rue_house: you double the lobes on the cam
09:21 PM rue_house: they run waste spark, so timing needs no changes
09:22 PM rue_house: you take the intake and plumb it to the crank case
09:22 PM rue_house: zhanx, ?
09:22 PM Anniepoo_: whats that get u?
09:22 PM rue_house: a 2 stroke mixed gas engine
09:23 PM rue_house: I think
09:23 PM Anniepoo_: ah
09:23 PM Anniepoo_: hmm.....
09:23 PM rue_house: the only problem I forsee, is if it backfires into the crank case
09:23 PM rue_house: which might cause the whole engine to explode?
09:23 PM rue_house: Tom_itx, ?
09:28 PM * Anniepoo_ is here, with fingers in ears
09:30 PM rue_house: good thing its irc
09:57 PM rue_house: https://www.thingiverse.com/thing:2437031
09:57 PM rue_house: worked ok
09:58 PM rue_house: large print, could have been a bit more conservative
09:58 PM rue_house: https://www.thingiverse.com/thing:2437032
09:58 PM rue_house: under way to a paste extruder
09:59 PM rue_house: I think for the wax one I'm going to have to get crafty
10:02 PM rue_house: screw sorter:
10:02 PM rue_house: -------------------
10:02 PM rue_house: http://ruemohr.org/~ircjunk/projects/screwsorter/p1090079.jpg
10:02 PM rue_house: http://ruemohr.org/~ircjunk/projects/screwsorter/p1090080.jpg
10:02 PM rue_house: http://ruemohr.org/~ircjunk/projects/screwsorter/p1090109.jpg
10:02 PM rue_house: http://ruemohr.org/~ircjunk/projects/screwsorter/p1090130.jpg
10:03 PM rue_house: http://ruemohr.org/~ircjunk/projects/screwsorter/p1090132.jpg
10:03 PM rue_house: http://ruemohr.org/~ircjunk/projects/screwsorter/p1090134.jpg
10:03 PM rue_house: http://ruemohr.org/~ircjunk/projects/screwsorter/p1090135.jpg
10:03 PM rue_house: ---
10:03 PM rue_house: in those last 3 you can see, in the background, the proto vibrator bowl
10:04 PM rue_house: in some of those images the purple is looking much more purple...
10:04 PM rue_house: anniepoo, ^!? eh?
10:06 PM rue_house: :( I dont have a folder for the supper machien
10:17 PM rue_shop3: the drive belt goes back past the carrige
10:18 PM rue_shop3: if it were an encoder strip, I could double the resoluton by putting the detector on that side on the carrige
10:25 PM rue_shop3: not too sure on how I want to grab the ribbon
10:47 PM Tom_itx: looks good
10:52 PM Tom_itx: what are all the 'tubes' in 109
10:55 PM rue_shop3: those are the storatge bins, the glue on the dollar store velcro SUCKS
10:55 PM rue_shop3: (go figure eh?)
10:59 PM Tom_itx: i recognize that blue thing in 80
10:59 PM rue_shop3: :)
11:00 PM rue_shop3: thats my 6 pin :)
11:00 PM Tom_itx: still works ehh?
11:00 PM rue_shop3: 'fer all those damned 6 pin headers!
11:00 PM rue_shop3: yea
11:00 PM rue_shop3: works good
11:00 PM rue_shop3: I still have the u2 set up as a 10 pin
11:00 PM Tom_itx: i figured
11:00 PM rue_shop3: and I have 2 usbasp kicking around *somewhere*
11:01 PM Tom_itx: they don't download as quick
11:01 PM rue_shop3: I'v had a few avrs locked in strange ways that needed the usbasp to reprogram them
11:01 PM rue_shop3: maybe thats part of why
11:48 PM rue_shop3: mmm my first part with printed springs, I wonder how this will go
11:50 PM Anniepoo_: 8cD