#robotics Logs

Dec 04 2012

00:33 zhanx i am gonna cut this one
00:43 rue_mohr zhanx, !
00:45 KimLaroux If there was a way to sticky quotes to users, that would be one
00:45 KimLaroux <zhanx> just oven reflowed my desktop motherboard and it works again
00:46 KimLaroux Sounds like something from the title of an xkcd comic
00:55 zhanx rue_mohr: !
00:58 zhanx rue_mohr: i am in the zone if i can get my cnc up
00:59 rue_mohr up?
00:59 rue_mohr your not standing on it are you?
00:59 rue_mohr hows things, your alive, this is good
00:59 zhanx winding my own motors
00:59 rue_mohr hahah
00:59 zhanx by thinking some
00:59 rue_mohr did that once, decided never again
01:00 zhanx lateral movement
01:00 TELunus I'm thinking I might wind my own motor when I get around to building an electric car.
01:01 zhanx rue_mohr: i am building something that will fail
01:01 rue_mohr TELunus, what would it take to make a good electrostatic motor?
01:01 zhanx batteries suck
01:02 zhanx unless i am going aluminum ions
01:02 rue_mohr volumetric charge accumulators, but I cant tell you about them cause your in the military
01:02 zhanx and i said what
01:04 rue_mohr I'm gradually picking away at the overload boards for buddy
01:04 rue_mohr I'm glad to hear I'm not out of the hexapod race yet
01:04 zhanx i got about 150 motors to make
01:04 rue_mohr why are you winding your own?
01:04 zhanx easy
01:05 zhanx size
01:05 zhanx pancake style
01:05 rue_mohr ah
01:05 rue_mohr for elf?
01:06 zhanx rotation on xyz for the 4 foot elf has started with jumping
01:06 rue_mohr ah
01:06 zhanx i need 9 dof per leg
01:06 rue_mohr 9!?
01:06 TELunus looks like making a good electrostatic motor would be tricky.
01:07 zhanx yes
01:07 zhanx to account for landing
01:07 rue_mohr TELunus, what if you flood it with something other than air
01:07 rue_mohr nitrogen?
01:07 zhanx i can jump it but... landing is proving to be a problem
01:08 rue_mohr have an accelerometer?
01:08 zhanx i will get it, its 190 pounds right now
01:08 TELunus Why does that help? Also, what's your exact mechanism for the electrostiatic motor.
01:08 rue_mohr elf is 190 lbs?
01:08 zhanx right now yes
01:08 zhanx batteries sucl
01:08 zhanx suck
01:09 rue_mohr TELunus, I wonder if you can get the same force as an elctromagnetic without having breakdown issues (arcing)
01:09 rue_mohr elf got bigger
01:09 rue_mohr was servo motors last I saw
01:09 zhanx rue, i have a large spider that can almost jump now
01:10 zhanx 8 feet as of now
01:10 rue_mohr oh dear
01:10 zhanx cant land worth a crap
01:10 rue_mohr http://www.ebay.ca/itm/320912058619
01:10 rue_mohr I mixed those and
01:10 rue_mohr http://www.ebay.ca/itm/330737532282
01:10 rue_mohr to make the 3 wire control cables I use for all my stuffs
01:11 rue_mohr http://www.ebay.ca/itm/320573347678
01:11 rue_mohr that is a REAL meter that acutally works
01:12 rue_mohr zhanx, do we get to see?
01:12 zhanx not yet but soon
01:12 rue_mohr I'm passed bedtime
01:12 zhanx i want 10 meters before i post iy
01:12 zhanx it
01:13 rue_mohr clearing up the shop, I got a lathe
01:13 zhanx fyi that is the darpa thing
01:14 rue_mohr http://www.kmstools.com/king-canada-10-x-22-metal-lathe-2587
01:14 rue_mohr ah
01:14 rue_mohr I understand then
01:14 rue_mohr funny, I didn't hear about that challange
01:14 rue_mohr I have to phone them up and ask when its gonna arrive
01:14 zhanx mine will be the biggest i think
01:14 rue_mohr :)
01:15 TELunus I'm thinking you could use two parallel plate capacitors connected to a common voltage, one in side the other, with the inside one rotating and connected to the voltage source by brushes.
01:15 rue_mohr recycling the motion control code?
01:15 zhanx but i think it will make the roof of a 2 story building
01:15 zhanx rue nope all new now
01:15 rue_mohr TELunus, might be something fun to play with
01:15 TELunus But you will need high voltages for a decent amount of charge to build up at a distance.
01:16 rue_mohr TELunus, you could ground the stator and switch the plates between + and - HV
01:16 rue_mohr strange laguage, "you"
01:16 TELunus sure.
01:16 rue_mohr hmm
01:16 rue_mohr I got good toys in the mail today
01:18 TELunus not sure how the voltages needed will compare to the breakdown voltage at these distances.
01:18 rue_mohr SLEEEEEEEEEEEEEEEEEEEEEEEEEEEP!
01:19 TELunus You just reminded me, I want to make an arc lamp.
01:19 rue_mohr start with a good UV shield
01:20 rue_mohr TELunus, welding shops have something called 'gouging rods' their copper coated carbon
01:21 rue_mohr from 1/4 to 3/8" or so thick
01:21 TELunus For electrodes you mean?
01:21 rue_mohr yea
01:24 rue_mohr http://www.lascentrum.com/en/gouging+electrodes/
01:25 rue_mohr ! they make flat
01:25 TELunus Oh, looking things up I'm remembering that I was actually thinking of using a different type of discharge then arcing.
01:25 TELunus Possibly corona discharge.
01:26 rue_mohr :) gnight
01:27 TELunus 'night.
01:29 rue_bed ahh
01:29 rue_bed now I just lay here and wait to fall asleep
01:29 rue_bed TELunus, did you see the wave video via hackaday?
01:30 TELunus Don't think so.
01:31 rue_bed http://www.youtube.com/watch?v=DovunOxlY1k
01:31 rue_bed is that it?
01:31 rue_bed skip the first few min intro
01:36 TELunus Oh, you did send that video before. I havn't finished watching it yet.
01:36 rue_bed it gets better as it goes on
01:36 rue_bed good while-eating-breakfast video
08:33 gregtom6 hy all
08:33 gregtom6 http://answers.yahoo.com/question/index?qid=20121204053959AAsO6Q7
08:34 theBear wtf is a valiant turtle you crazy person ?
08:35 gregtom6 why am I crazy?
08:35 gregtom6 http://gallery.nen.gov.uk/assets/0802/0000/0121/ict_equipment21_mid.jpg
08:35 gregtom6 here you are
08:38 theBear wow.. there were turtle projects when i was a kid, but i never seen anything like that
08:38 theBear and i follow these things
08:38 gregtom6 and where are you from?
08:38 theBear .au
08:39 theBear and i been in this channel probably 6 or 7 years now
08:39 gregtom6 and I could show you new things :D
08:39 theBear maybe, i'm not looking for new things
08:40 theBear sure as hell not looking for 20 y.old turtles
08:55 rue_mohr extreme obsolescence?
08:56 rue_mohr maybe someone was gonna come up with something newer
08:57 rue_mohr also part of the 'technology isn't part of the school curriculum' we seem to be seeing more and more these days
09:03 theBear i used to have to stay after school to use lego/logo
09:04 theBear by choice !
09:05 rue_mohr I think I recall them kicking me out of the computer lab during lunch/recess for a while
09:06 rue_mohr theBear, http://eds.dyndns.org/~ircjunk/tutorials/prog/python/learn_py.html
09:06 theBear hehe yeah, i got kicked out of some places for trying too hard to learn
09:07 rue_mohr it took a while to catch on that "that question is beyond the scope of this course" meant, "I dont know"
09:09 theBear hehe
09:10 theBear python has a turtle ?!?!?!
09:10 rue_mohr yea
09:10 rue_mohr that page is a conversion of the old appleIIe book
09:10 theBear is that a standard module ? maybe you should mention what modules you NEED out of * for this approach
09:10 rue_mohr alot of it
09:11 theBear and yeah, the turtle part feels very familiar from the 80's
09:11 rue_mohr it was a good book
09:17 theBear yeah, i bet most current/modern languages never had 'kids' books like that
09:19 rue_mohr no, its unfortunate
09:19 rue_mohr I have a few old books I'm keeping to convert