#robotics Logs

Feb 26 2013

00:25 rue_bed !time
00:25 tobbor My watch says its 10:12PM Mon Feb 25 2013
00:25 rue_bed !thislog
00:25 tobbor This one: http://rueshouse.dyndns.org:82/~ircjunk/irclogs/html/%23robotics-2013-02-26.html
00:25 e_bed sh
00:26 home THIs?
00:26 rue_bed as opposed to yesterdays or tommorows
00:26 rue_bed it breaks them into days, gmt days
00:27 Rif !tomorrowslog
00:27 rue_bed incase your wondering I dont make tommorws logs readable
00:27 rue_bed :P
00:27 Rif might save me hanging in the channel all day
00:29 Rif have got the main platform in gripper down for 7grams to just 1 now :)
00:29 Rif whole thing should be under 14 grams with 2 servos
00:30 Rif last one was near 50g so should let arm work alot better
00:30 rue_bed hah, lighter than the servos
00:30 rue_bed want to see images!
00:30 Rif nope :P
00:30 rue_bed where do we buy kits!
00:30 Rif using 3g servos rue
00:30 rue_bed ah
00:30 Rif will make some when done
00:31 Rif well there are no others so may as well buy meself a sheet and make a few
00:32 Rif new gripper arms down to 0.8g for a pair, and new gripper surface that grips, even last nights were 1.6
00:33 home I need servos
00:33 Rif home they are cheap these day for the mini ones
00:34 Rif sure they break easy when stressed so not the best for prototyping
00:35 Rif rue, 9 plexi parts to make gripper, total weight 4.3g
00:37 home meh
00:37 home I have no money
00:37 home even though I am 18 XD
00:37 Rif can you code?
00:38 home shitty coder, but yes
00:38 home I have a long way to go...but I have done stuff
00:39 home sigh
00:39 home should sleep
00:43 Rif no worries
00:43 home yeah good night
00:54 Rif rue_bed still there?
00:56 Rif http://imagebin.org/248164
01:46 MrCurious rif: what is that
01:46 MrCurious oh gripper
01:50 Rif MrCurious yeah trying to assemble at moment
01:52 MrCurious you might try doing a layer of carbon fiber or fiberglass + epoxy resin over it
01:52 MrCurious like cardboard between 2 sheets of aluminum
01:52 MrCurious to make it more ridgid
01:56 Rif yeah have similar stuff at work, plastic between 2 layers of ali, is widely used
01:57 Rif the lighest is 3mm thick with a 0.1mm skin of aluminium on each side, pretty light but the plexi seemed much more rigid
01:57 Rif the composite stuff bends and stays bent, to easy
01:58 Rif got half gripper together, this servo tester is proveing so useful
01:58 Rif gears mesh nice
02:02 MrCurious i think you can epoxy on a layer of paper
02:02 Rif yep sounds plausible
02:02 MrCurious and that should provide a tensioned skin that will resist breaking at a very low weight/material cost
02:03 Rif this plexi one is looking pretty nice though, and very light, and will lift 50g easy i reckon
02:04 Rif weithout flexing, but i have not tested yet, gone so lightweight that hopefully some part will break, then i know the weak spot
02:05 Rif it will flex at 50grams actually, this one is good for 10 grams
02:05 Rif just rested the other gripper on it for a quick test, its 50+ g
02:06 Rif but the flex is at the wrist servo, so can easy make it a bigger servo again, mainly wanna test a 3g servo gripping objects
02:57 Rif the bits fit http://imagebin.org/248170
02:58 Rif just need m2 mylocks, normal m2 nuts and bolts suck unless tight on order
02:58 Rif nylocks*
03:01 Rif just under 20g but should be better with correct length screws
03:15 Jak_o_Shadows I can just imagine Rif with dozens of tiny robotic arms surrounding him on his desk
03:32 Rif Jak_o_Shadows its honestly true at this time :) , dozens of parts anyway
03:33 Rif this one is so cute though, really need nylocks to make it work for more than a minute though
04:28 theBear it does look cute :)
04:36 Rif theBear thanks, got a couple of 2.5g servos on the way, so 1 more level of cuteness to go, these work fine as a gripper
04:38 Rif will make the 2.5g gripper just big enough to grab a 2x2 lego block, so still usefull
04:40 theBear what does the 2.5 mean ?
04:40 Rif 2.5 gram servo weight
04:40 theBear like, the whole thing or ?
04:40 Rif yep
04:40 theBear good to know
04:41 Rif the whole arm including 2 servos and 12 partds and 8 screws will be about 13 grams
04:41 Rif er gripper
04:41 Tom_itx Rif goes from making big bots to tiny ones
04:41 Rif the sg90 blue servos i first used are 9 gram
04:42 Rif yes and then back again tom
04:42 Rif is gonna help me make the big one lots lighter
04:43 Rif and its all about weight when making arms it seems
09:00 rue_house no its balance, but nobody knows that
09:00 rue_house nice gripper Rif
09:02 rue_house is the cnc machine laser or a bit?
09:05 Tom_itx cnc router
09:06 theBear there's arms and there's arms.... when my body is working the only way to balance my arm is with a leg, for light stuff it can support its own weight... my arms aren't THAT stupid
09:07 theBear and the leg couldn't balance it if it couldn't support more than its own weight without balance
09:23 rue_house robot arms that aren't driven by high density actuators and made from lightweight carbon based materials benifit from being balanced
09:26 theBear :)
09:27 rue_house if I can figure out a force sensor I'm really into making an arm with air muscles
09:29 rue_house kat gave me some interesting ideas last night
09:34 Tom_itx rue_house, how's your reprap coming along?
09:36 theBear how about a piezo element between the bag and a gap
09:36 theBear or load cells on the hard bits
10:38 Hukka Just noticed velo2g
10:38 Hukka Would be perfect. I wonder how hard it is to make a simple clone
10:41 Hukka Based on the one sketch on their video it looks like the inward force is spring loaded, and it opens when the motor is powered
13:04 undercover hi
13:05 undercover /:
13:10 poolsen hi
13:10 poolsen anyone ?
13:11 Rif hello
13:11 poolsen hi
13:11 tobbor Hello poolsen
13:11 poolsen hi how qre you ?
13:11 poolsen i am using telnet and google
13:11 theBear wtf rif ? you get up too early
13:11 theBear oh wait, is it that late ?
13:11 theBear heh
13:11 Rif was 3am yesterday theBear
13:12 Rif need to make stuff before work
13:12 theBear it's 3am now :)
13:12 Rif 6am here
13:12 poolsen someone can tell me what it about here ; robotics ?
13:13 Rif it speaks for itself
13:14 undercover privmsg #robotics : hi
13:14 theBear hangon, why are you both the same person ?
13:14 Rif if you channel was called #r6-rep43b then asking wat is is about would be more valid
13:14 theBear Rif, YOU DON'T KNOW THE REP43B !!!!??!??
13:15 Rif theBear sign of true boredom
13:15 Rif lol
13:15 theBear :)
13:18 undercover i alm using telnet
13:18 undercover and web qpplication
13:19 theBear heh, not anymore you aint
13:19 theBear seriously ? you telnet-ircing ? that's impressive
13:19 undercover thank
13:20 undercover i am a geek
13:20 poolssen hi
13:20 tobbor poolssen! like, totally tell us about the project!
13:21 poolssen it's me from the web application
13:21 theBear hi tobbor :)
13:21 theBear don't mind him, he's a robot
13:21 poolssen who
13:21 theBear lol, i'm tempted to say undercover, but i say tobbor
13:22 poolssen what does tobor mean ?
13:22 Rif look in a mirror
13:22 theBear i dunno, maybe it's canadian for robot
13:22 poolssen ok
13:22 theBear heh, easily pleased, i like the boy
13:22 poolssen i am gonna send a message from telnet
13:22 poolssen hold on
13:23 theBear heh, i didn't think anyone alive this century remembered how to do that... i sure as hell forgot 15+ years ago :)
13:23 undercover
13:23 undercover me no
13:23 Rif secret code?
13:23 poolssen code ?
13:24 Rif the blank message
13:24 poolssen which one
13:24 theBear probly a typo :) it's a lot easier to do that without a client :)
13:24 poolssen i am also a robotics geek
13:24 poolssen i would like to talk about
13:25 undercover privmsg
13:25 theBear lol
13:25 poolssen ?
13:25 poolssen what is lol ?
13:25 theBear laugh out loud, c'mon man, you said you were a geek !
13:26 poolssen i know that
13:26 poolssen why are you lolling
13:26 Rif lmao
13:26 theBear cos you keep slipping out blank lines and broken /msg's
13:26 poolssen cause with telnet
13:26 theBear but don't worry about that now, i laugh a lot
13:26 theBear well, obviously :)
13:27 poolssen iot's not that easy
13:27 theBear talk about robots, that's what we usually do here when we aren't laughing
13:27 poolssen with telnet
13:27 theBear i know, that's why i tried it a few times for geekpoints in the 90s and used clients ever since :)
13:27 poolssen i am a telnet addict
13:27 theBear you should try joining a few more channels on telnet, then it really gets interesting
13:27 poolssen i use it for every thing
13:27 theBear heh, you are a geek
13:27 poolssen i did
13:28 poolssen i aloso use gopher sites
13:28 theBear they still exist ?
13:28 poolssen on the 70
13:28 poolssen yes
13:28 poolssen they are back
13:28 theBear jeez, telnet probly the only way, surely there isn't a gopher client for any os that runs today :)
13:29 poolssen there are on the web using what ever web client
13:29 theBear i aint seen gopher since before the web had pictures !
13:29 theBear what !?!?! you can't have a gopher page on the web, it's just a webpage then !
13:29 theBear that's cheating
13:29 poolssen ?
13:29 poolssen sorry my english is rusted
13:31 theBear hehe, nice turn of phrase... i mean, gopher is only gopher thru a gopher client or telnet, it's like putting a bbs portal in a webpage just isn't like telnetting or modem-ing to a bbs
13:31 poolssen bbs ?
13:31 poolssen what is that ?
13:31 theBear err, those things we used before dialup internet existed
13:32 poolssen rtc you mean
13:32 poolssen in my country it was called like that
13:32 poolssen rtc
13:33 theBear ok, english countries tend to say Bulletin Board System
13:33 Rif poolssen what is your country?
13:33 undercover Algeria the great
13:33 poolssen works
13:34 Rif cool
13:34 poolssen when it comes to my loved country
13:34 poolssen hi hi
13:34 poolssen you know algeria
13:34 poolssen ?
13:34 undercover someone ?
13:34 Rif i know the name and that its along way away
13:35 Rif probably like you know australia
13:35 poolssen where are you from
13:35 poolssen autralia
13:35 poolssen i know
13:35 Rif yep
13:35 poolssen you are being envided by qatar
13:35 poolssen they are buying
13:35 poolssen lands
13:35 poolssen out there
13:36 undercover ?
13:36 theBear i know as much as rif, maybe less :)
13:36 poolssen i did nt understand ?
13:37 theBear meh, better them than the 'mericans :)
13:37 poolssen my english is rusted a little
13:37 theBear sure you did... we heard of algeria, and we know it is not close to us
13:37 f passes poolssen the oil
13:37 poolssen how
13:37 theBear we share the same country
13:37 poolssen ?
13:37 theBear umm, i dunno, from tv or maps or something
13:38 poolssen Algeria
13:38 poolssen it's my country
13:38 theBear yep, that's where you are
13:38 poolssen it's mine
13:38 poolssen hi hi
13:38 poolssen my ip i guess
13:38 poolssen you looked up
13:38 poolssen nice
13:38 theBear probly, but it was easier 'cos you told us :)
13:38 poolssen yeah
13:38 Rif lol, you really think i am that bored?
13:38 theBear tho you were undercover when you did
13:39 poolssen ha ah
13:39 poolssen nice
13:39 Rif time to get ready for work already :/
13:39 theBear ha ah indeed !
13:39 poolssen i am not anymore
13:39 poolssen i am discovred
13:39 poolssen now
13:39 undercover me too
13:39 theBear heh
13:40 poolssen you know poolsen ?
13:40 poolssen someone ?
13:40 undercover me ?
13:41 undercover i know
13:41 undercover it an hacker
13:41 eBear gig
13:41 poolssen giggles ??
13:41 poolssen what does that word mean ?
13:41 Rif not quite a lol
13:41 theBear orright, i gotta rest my poor crippled back... i'll be back... normally there are more people here, and we do talk about robots, honest
13:42 theBear like when a baby laughs
13:42 poolssen i pass my turn on this one
13:43 undercover i am gonna go too
13:44 theBear a pleasure to meet you
13:44 theBear and you have a nice day mr Rif !
13:44 poolssen for me too
13:44 poolssen thank you
13:44 undercover privmsg #robotics :me too
13:44 theBear hehehe and i go away smiling
13:45 undercover so to ext time
13:45 undercover i meant next time
13:46 poolssen list
13:46 theBear oh don't list, you'll flood yourself off
13:48 poolssen it does'nt work
13:48 poolssen so
13:48 poolssen but on telnet it works
13:48 poolssen i should use my xchat
13:48 poolssen next time
13:48 poolssen or unix
13:49 undercover yeah
13:49 poolssen mobaxterm will do it nice
13:50 undercover so what about robotics
13:51 undercover where can i get some serious documentation
13:51 undercover somone ?
13:51 Rif a book?
13:51 Rif i just make stuff sorry
13:52 theBear and i just learned to make stuff from him :)
13:52 Rif and use the internet when questions arise
13:53 undercover i asked about some serious
13:54 undercover i mean some schems
13:55 undercover i am gonna go
15:10 Hukka Oh, I missed the high point of the day ^^
15:11 Hukka Does that happen a lot in here...?
15:26 Tom_itx yup
18:00 RifRaf got an rgbw sensor in post today, could be interesting
18:02 theBear wow, that COULD be interesting
18:03 RifRaf is so small
18:03 RifRaf will easy fit in a gripper
18:05 RifRaf this thing http://elcodis.com/parts/5506629/TCS3414FN.html
18:05 RifRaf on a mini breakout pcb