#robotics Logs

Sep 03 2013

02:40 rue_house http://eds.dyndns.org/~ircjunk/images/catnmice.jpg
02:41 rue_house I think a good clip would be "I found your stash."
03:09 rue_house http://www.youtube.com/watch?v=i3vFjNGE5wg
03:37 rue_house ok next step on the cnc is to install a linear encoder
03:37 rue_house I have the powersupply and motor driver
03:56 Tom_itx how big is the supply?
03:56 rue_house not sure what to do about the way the flyback protection on the motor driver causes one supply to shunt power directly to the other power supply during pwm cycles
03:57 rue_house its a 1500W frame with 2x 24V 32A modules in it
03:57 rue_house I swapped some modules around to make it
03:57 rue_house in reality, I only need about, maybe 5A on the 24V
03:57 rue_house +-24V
03:58 rue_house I was thinking about modifying a pc supply
03:58 rue_house last time I tried that I smoked it
03:59 rue_house oh wait, that was the charger, I smoked it cause I hooked a battery up backwards
04:00 rue_house the power supplies fan makes a really ominous MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM (its just the fan)
04:00 Faek You mean ohmnious right?
04:01 rue_house what did I type? I'm falling asleep
04:01 Tom_itx you workin today?
04:01 rue_house nope
04:01 Faek (you typed ominous which is right. I typed OHMnious
04:01 rue_house took 2 days off, last friday and this tuesday
04:01 Tom_itx o
04:01 rue_house oh heh
04:02 rue_house the next step for the cnc machine is to put the linear encoder on and a limit switch
04:02 rue_house set up an avr to do servo control of the dc motors
04:03 rue_house learn enough about BDC to interface it
04:03 rue_house BDI?
04:03 rue_house linux cnc
04:04 rue_house I suppose if I give it a step/dir interface I'm good
04:11 rue_bed <rue_shop2> TM1809
04:11 rue_bed <rue_shop2> TLC5940
04:30 Jak_o_Android TLC5940 is a pwm chip?
09:36 rue_bed yea, one verry available on ebay
10:44 GuShH rue_bed: nice cat
10:44 GuShH but a box full of mice tells me you may have a hoarding issue!
10:50 GuShH what happens when VW annoys me dscn3993f.jpg
10:50 GuShH err http://gushh.net/tmp/dscn3993f.jpg
10:50 GuShH silly script.
10:52 GuShH http://gushh.net/tmp/dscn3987f.jpg bonded captive nut on the left... which is the one that fell off from the inside of the subframe, genius engineering in vw indeed. let's glue shit on top of paint and expect it to just work.
11:51 MrCurious watching news now is like open a schrodinger box of attacking syria in slow motion
14:54 MrCurious GargantuaSauce_: you around
14:54 GargantuaSauce_ for like 10 more mins yes
14:54 MrCurious got the 4 servoes
14:55 MrCurious as expected ,with brackets, no screw
14:55 MrCurious need to source a bunch of screws
14:55 GargantuaSauce_ do you have enough to mount one bracket
14:55 MrCurious i have 1 from ebay (same model number/sticker)
14:56 MrCurious mounted and working
14:56 MrCurious servo controler driving it from -90, 0, 90 accurately
14:56 MrCurious and i have to take care aas it has demonstrated an abillity to punch the Fudge out of fingers
14:56 GargantuaSauce_ -90 to 90 is accurate to 1-2ms?
14:56 MrCurious no ideaa
14:57 MrCurious i just set up te servo controler teaching it -90 and 90 settings
14:57 GargantuaSauce_ ah
14:57 MrCurious and 0 was reasonably strait
14:57 GargantuaSauce_ does the bracket fit nicely, is it tight or is there a significant amount of slop
14:57 MrCurious screws aside, metal horns, brackets sure make this easy for $11
14:58 MrCurious brackets to very very tight tolerances
14:58 MrCurious they cling fine without screws
14:58 MrCurious no slop in the servo output .... so far
14:58 GargantuaSauce_ welllp guess i'm dropping some more cash then
14:58 MrCurious sorry :)
14:59 MrCurious i will pull the trigger again if the price drops some more
14:59 MrCurious they came pretty fast too. signature requiredd though
15:00 MrCurious i think the price is tied to the us//cn exchange rate
15:06 GargantuaSauce_ http://www.aliexpress.com/item/F04039-5-HDKJ-S3315D-60G-Torque-15kg-cm-Metal-gear-Digital-servo-For-Robbot-Truck/706327601.html
15:07 GargantuaSauce_ oh no brackets hurr
15:08 MrCurious yeah, the brackets hold much of the "magic"
15:08 MrCurious that and the little plastic nub on t\e bottom opposite the sharf
15:09 MrCurious shaft
15:09 MrCurious F04039-A S3315D 60G
15:09 MrCurious they came packaged in a styrofoam box. really nice secure minimal packaging
15:10 MrCurious and also shelacked in tape as is tradition for china
15:14 GargantuaSauce_ man the canadian dollar is crap righ tnow
15:15 jumijoze because it's bills are made of plastic?
15:19 MrCurious dont think plastic, think... laundry and ice age safe
15:19 MrCurious those bills will survive long after they have lost any intrinsic value beyond the art or BTU's they are made of
15:20 MrCurious so i suppose the future will judge us by what we leave... platic money, and plastic sex-costumes.
15:41 rue_house they dont, ask any australlian
15:42 MrCurious now if a country really hated another country, they could mint plastic money mocking said other country. and it would last forever until it was defacto truth
15:43 rue_house ultimitly they destroy the old bills during circulation and repalce them with new ones that have new securrity features
15:43 jumijoze at wich heat those bills start to deform?
15:43 rue_house I gave the cat a bath, man did she hate me for that
15:44 rue_house as she was going in she gave me kinda a "hey!, uhhh, I think that looks wet!"
15:49 MrCurious in revenge she is plotting to eat your eyeballs when you die
15:50 MrCurious anyone want to bet that syria's asad is gluedd to CNN to watch the senate hearings
15:52 MrCurious its almost like they are asking him..... How deep is your basement...
15:55 GuShH MrCurious: just go buy some screws you lazy bastard!
15:55 GuShH get a whole box!
15:55 MrCurious i think they are too smal for home depot. pondering where to source them
15:56 MrCurious once i work out size, i will order bulk off of the great ebay
15:58 GuShH MrCurious: of course you don't have a thread gage
15:58 GuShH where do you live at, argentina?
15:58 ShH chuc
15:58 MrCurious i have one at the store
16:00 GuShH MrCurious: use your caliper
16:00 GuShH are tjeu
16:00 GuShH they metric
16:06 GuShH what can I do about it, VW won't even care to answer an email if I sent one
16:07 GuShH anyway MrCurious the pitch (it's not really called pitch in metric, but roll with it) is probably .5mm
16:07 GuShH on that type of screw
16:07 GuShH although I could get the gages and double check, I haven't slept in two days...
16:08 GuShH ...this nightmare included a cross-threaded bolt (not my fault), a fallen not-welded-at-all nut on the subframe (not my fault) and some other issues with internal rust (not my fault)... all thanks to the brilliant engineers of VW
16:09 GuShH ok so if they're fine thread it's not going to be .5, it's going to be less... where are you going to be using them, with nuts or on brackets that are already tapped?
16:09 MrCurious i think i can get em at home depot. will eliminate them before i hit online
16:10 MrCurious pre-tapped
16:12 GuShH MrCurious: the kit and the cat (!) http://gushh.net/tmp/dscn3999f.jpg
16:12 GuShH it's rather useless. I used most of my old tools
16:13 MrCurious i have several of those cats
16:13 MrCurious 9
16:13 MrCurious one looks just like that one. it goes into the shop tomorrow for an oral tuneup
16:16 MrCurious GuShH: what is argentina saying about the syria chemical attacks?
16:16 MrCurious you guys have a side?
16:39 GuShH MrCurious: nobody talks about it
16:39 GuShH also 9 cats is 7 or so too many
16:39 MrCurious not on your news??
16:39 GuShH not much at all
16:39 MrCurious yeah. we accidentally got out nnumbered
16:40 GuShH that cat is preggo though
16:40 MrCurious used up our lifetime kitten allowance
16:40 GuShH don't know what to do... should contact the vet see if they can take them for free, doubt it
16:40 MrCurious guessing you are about to know how we felt
16:40 GuShH I've already went through that
16:40 MrCurious i think you have to birth them
16:40 MrCurious then take cute pictures and put them up on posters
16:40 GuShH she'll have 'em, but I won't keep 'em
16:40 MrCurious and hope they get adopted by non-mosters
16:40 MrCurious if she has em ouotside
16:41 MrCurious most will die
16:41 GuShH she sleeps inside
16:41 MrCurious most die here
16:41 MrCurious if she leeps inside, damn strait she will have em inside
16:41 MrCurious and they will be blind and defenseless
16:41 MrCurious and cute as hell
16:41 MrCurious dont name them
16:41 MrCurious dont play with them
16:41 MrCurious well, play with them so they like people
16:41 MrCurious makes it easier to pick them up to give em away
16:42 MrCurious but once you name it, its yours
16:42 GuShH she kinda adopted herself
16:42 GuShH it wasn't planned
16:42 GuShH like my other two cats
16:42 MrCurious we had a few we kidnapped
16:42 MrCurious and 2 that demanded entry
16:42 GuShH lol
16:42 MrCurious they were persistent
16:42 MrCurious snuck in over and over
16:42 GuShH one of them I found outside, well the dog found her
16:42 MrCurious finally accepted our fate
16:42 GuShH she was a week old or so
16:43 GuShH took her in, gave her formula with a syringe for weeks
16:43 MrCurious has a cat given you a massage on teh sole of your feet yet?
16:43 GuShH bleh I let the black one sleep in the garage, but nowhere else.
16:43 GuShH no?
16:43 MrCurious like how they work a blanket before sleep
16:43 MrCurious ZOMG they have magic fingers
16:43 GuShH the hell
16:43 MrCurious lucky if you can retain consciousness for 60 seconds vs a cat foot rub
16:44 MrCurious i havve had 3 or 4 life time
16:44 GuShH cats have taken over your household!
16:44 MrCurious was laying on my stomach, and they found my feet and started two hand rubbing the soles of my feet
16:45 MrCurious they have
16:45 MrCurious and they suck at moucing
16:45 MrCurious mouseing
16:45 GuShH house cats suck at everything
16:45 MrCurious and the fat one knocks us over when spooked
16:46 MrCurious lookss just llike "hover cat" when running
16:46 GuShH except climbing up ladders http://gushh.net/tmp/dscn4006f.jpg
16:47 MrCurious left a ladder to an open loft
16:47 MrCurious caught the first of them before they all filed up into the attic
16:47 GuShH lol
16:47 MrCurious at 10 years, they need an oral tune up
16:48 GuShH she got to the very top, roamed about a branch then came back down, for no good reason
16:48 MrCurious that you knew of
16:48 MrCurious probably got some great intel on the dog next door
16:48 GuShH lol
16:48 MrCurious friend had an evil cat.... next door had 2 dobermans on chains
16:48 GuShH shes friends with our dog
16:48 MrCurious it would rile them up
16:48 MrCurious then their mom would yell at them to hush
16:49 MrCurious it would go back over wait a few seconds and .... "meow".....
16:49 MrCurious set em off again
16:49 MrCurious worked those poor dumb dogs
16:49 GuShH dumb dogs too
16:49 GuShH heh
16:49 GuShH most agressive dogs seem pretty darn dumb
16:49 MrCurious i got a 1 eyed cat that likes to climb into high closet shelves, atop curtains, and sleeps in my underwear drawer which it is happy to open if we dont
16:54 GuShH MrCurious: what happened to it's other eye?
16:55 MrCurious swole up infected when we found it
16:55 MrCurious it was the runt
16:55 MrCurious we had it removed to prevent compications
16:55 GuShH aw
16:55 MrCurious poor thing was sick with a cold or flue, had a swollen enflamed buggared eye and was tiny
16:55 MrCurious dropped $1k on it and made it ours
17:02 robotustra fcked all day with one bug
17:02 robotustra tomorrow will continue
17:03 MrCurious everything else is a re-run
17:03 MrCurious pretty sure i know how this will end
17:05 robotustra what?
17:36 rue_shop2 damn, I'mout of db9f
17:36 GuShH 16% price increase in plasma cutters
17:37 GuShH bastards
17:37 GuShH there's no reason any price should be going up this month
17:37 GuShH they still increase them.
17:46 rue_shop2 out of *solder pot* db9f
17:52 rue_shop2 I think thats all the boxes
17:52 rue_shop2 how did this happen!
20:57 rue_shop2 :) I assembled one of my avr boards I found
20:57 rue_shop2 I used good parts :)
21:04 Tom_itx i would hope so
21:04 rue_shop2 tent caps, machined pin socket, blue led, NEW 7805
21:05 rue_shop2 tent/tant
21:05 m_itx checks to be sure this is rue_
21:05 rue_shop2 new 14.7456Mhz crystal
21:05 rue_shop2 NEW 1N4004 diode
21:06 rue_shop2 Blue jumper shunt, one of the good ones, with the little groove around the top
21:06 Tom_itx yeah, i had some of those from my old bitbanged programmers
21:07 rue_shop2 :)
21:07 rue_shop2 well, sleeping till 12 didn't help me get much done today
21:07 rue_shop2 rest is good
21:08 Tom_itx you worked the same amount, just during a different timeframe
21:11 Faeks Sleep is nice
21:13 Tom_itx sleep is overrated
21:13 Tom_itx sleep when you're done living
21:39 GargantuaSauce_ woooo
21:40 GargantuaSauce_ had to spend much of the evening fixing an electrical problem or three caused by my super sloppy perfboard construction
21:40 GargantuaSauce_ but now i got my hexapod turning around with manual control of the joints
21:40 GargantuaSauce_ time to start rewriting the motion control
21:48 GargantuaSauce_ these cheapass servos are proving to be pretty robust...had half of em slam into one end stop or the other a few times due to malformed input pulses
22:15 MrCurious heard a song on radioo. its fresh from past 6 months, and sounds like mix of pink floyd arnold layne and the feel of a engine up-shifting and down shifting
22:15 MrCurious and has the word cadillac in it...
22:16 MrCurious very annoying having a stereo that doesnt show song names...
22:38 MrCurious clearly i am surrounded by new music afficianodos
22:44 GargantuaSauce_ http://www.youtube.com/watch?v=Vgn9QU60jcA
22:47 GargantuaSauce_ a triumph of nonlinear amplification
22:47 MrCurious THAT should come with a warning label
22:47 MrCurious nearly o.d.'d on it
22:49 GargantuaSauce_ that's a sign you didn't have it playing loud enough
22:52 MrCurious sounds like this... but with a pulse thats a engine shifting up and down http://www.youtube.com/watch?v=tA73k88NU-s
22:54 GargantuaSauce_ http://youtu.be/0ihe3f5wmY8
22:55 GargantuaSauce_ figured i should make a video before the thing destroys itself when i start testing gait code
22:56 MrCurious turn the pencils around, let it draw :)
22:56 MrCurious now i want MOAR
22:59 GargantuaSauce_ well you'll have to wait a bi
22:59 GargantuaSauce_ t
23:00 GargantuaSauce_ assuming the floppy shit frame doesnt get in the way too much this thing is going to be pretty damn fast
23:07 MrCurious get bigger servos :)
23:07 MrCurious you know the link
23:07 MrCurious with brackets
23:07 GargantuaSauce_ ffff
23:08 GargantuaSauce_ nah once i start working again maybe i'll set aside a paycheck or two for some fancy-ass robotis ones
23:09 MrCurious how mny you need?
23:09 GargantuaSauce_ uh...18?
23:09 MrCurious and the brckets are $3 ea or less in qty
23:09 MrCurious if you can install a nub on the servo's you have if they are mg90 ish
23:10 MrCurious suppose you would just need to super glue a stud opposite the shaft
23:10 GargantuaSauce_ if i upgrade i want ones i can daisy chain
23:10 MrCurious then maybe $50 for bracket
23:10 MrCurious s
23:10 MrCurious oh nice
23:10 MrCurious i2c ones?
23:10 GargantuaSauce_ the dynamixel ones are rs485 i think
23:11 MrCurious http://www.avrfreaks.net/index.php?name=PNphpBB2&file=printview&t=94426
23:11 MrCurious i would be willing to go in on a few boards with that
23:11 GargantuaSauce_ i have a bunch of atmega8s
23:11 GargantuaSauce_ i have definitely considered using one per leg
23:12 GargantuaSauce_ and that is still an option but i am kind of shit at electronics and i want to focus on software dammit
23:12 MrCurious hmmmm
23:12 GargantuaSauce_ started the hexapod literally a year ago
23:12 MrCurious could make it take indiv commands, and group commands
23:12 rue_shop2 no worries, mine was started almost 10 ago
23:12 MrCurious started mine 2 years ago with
23:12 MrCurious crap servo;s
23:12 MrCurious gave up
23:13 rue_shop2 http://eds.dyndns.org/~ircjunk/robots/buddy_III/p1020058.jpg
23:13 MrCurious what the deuce iss that
23:13 rue_shop2 I'm building current limiter baords, been doing that for about a year now
23:13 rue_shop2 my hexapod
23:14 rue_shop2 http://eds.dyndns.org/~ircjunk/robots/buddy_III/p1020054.jpg
23:15 rue_shop2 http://eds.dyndns.org/~ircjunk/robots/buddy_III/p1020050.jpg <- in storage
23:15 rue_shop2 http://eds.dyndns.org/~ircjunk/robots/buddy_III/p1010980.jpg
23:15 rue_shop2 5 avr loop controllers, and an intel for position control
23:16 rue_shop2 each avr does 4 dc motor servo loops
23:17 MrCurious u need miniturization
23:19 theBear why ?
23:19 GargantuaSauce_ also need to figure out pcb etching and buy a tray of stm32f1s or something
23:19 GargantuaSauce_ because fuck avr
23:19 MrCurious wrong word.. i meant weaponization
23:19 MrCurious robot spider invader bots from canada EH
23:19 GargantuaSauce_ well he's got a lawnmower bot or two i think
23:19 GargantuaSauce_ that's pretty close to a weapon
23:22 MrCurious hexapod lawn mower.....
23:22 MrCurious that would be a first
23:22 GargantuaSauce_ make the tibias out of dowels and you can have self-configurable leg length
23:23 MrCurious hexapod beard-trimmer....
23:23 MrCurious trims while you sleep
23:23 MrCurious what could go wrong
23:23 theBear beard trimmers need 8 legs so they spookier
23:24 MrCurious or a snake bot thats a self insereting catheter
23:24 MrCurious that would be troubling
23:25 theBear maybe if that kind of thing troubles you, i suppose
23:26 MrCurious O^O
23:27 GargantuaSauce_ mmmm if i buy those bracketey servos i may as well get enough for 8 legs
23:27 MrCurious i think if they made a movie about that, horror films would be utterly re-defined
23:27 MrCurious it would be like the creepier sexier side of the borg
23:27 GargantuaSauce_ for moar gait variety
23:27 GargantuaSauce_ and AUW limit
23:28 MrCurious inflatable leg segments, so you can easily work with bad leg recovery self training
23:28 GargantuaSauce_ lol
23:28 GargantuaSauce_ applied machine learning is definitely on the horizon for this but theres no fucking way i'm going to even think about it now
23:29 MrCurious all hexapods need a gimic. llilke ant pincers, cnc routers, beard trimmers, lawn mowers
23:30 MrCurious a remote operated turkey baster for cleaning up radioactive water
23:31 rue_house GargantuaSauce_, avr is perfect for that
23:31 rue_house I dont need a freaking cpu, I need an io controller
23:33 GargantuaSauce_ i know it suffices, the low-end stm32s arent really any more expensive and have a sane architecture though
23:34 GargantuaSauce_ and are more powerful and have better peripherals etc
23:34 theBear cept i can't bang them together on a veroboard in under 10 mins and they're ridiculously overkill for just about anything an avr CAN do
23:35 GargantuaSauce_ good thing what you can do has no bearing on this project
23:35 rue_house do you understand that a new microcontroller comes out about every 3 years?
23:35 rue_house you think I have time to get used to a new one every 3 years?
23:35 GargantuaSauce_ i am not saying you should use stm32
23:35 rue_house I picked avr and I'm sticking with it
23:35 GargantuaSauce_ i am saying i should
23:35 rue_house I already ditched pics
23:36 theBear good boy
23:36 rue_house pics pissed me off tho
23:36 theBear not just you :)
23:37 theBear and don't forget the stamp, an outrageously expensive way to cripple your pic with just a tiny tiny bit of code :)
23:38 GargantuaSauce_ you will find no contention from me on the matter of pics being dumb
23:39 GargantuaSauce_ though at least the newer lines are a common architecture so they're actually useful outside the silly pic language
23:39 MrCurious Obama is desperate but not Syria
23:41 MrCurious rue, you are rather prolific on bots. where do you score your parts from?
23:41 MrCurious you got a sugar-mama?
23:44 theBear just glancing at them doesn't tell you ? it'
23:44 theBear it's kinda a well kept secret
23:45 theBear except for the HUGE industry that does it exclusively... some countries call them scrapyards, others salvage, other recyclers...
23:45 theBear you guessed it yet ?
23:49 GargantuaSauce_ bah i need to make a damn wireless transport protocol
23:49 rue_house MrCurious, everywhere