#robotics Logs

Oct 26 2011

00:04 rue_bed ... easy
00:05 rue_bed I think I put the fire out
00:05 rue_bed oops
00:08 rue_bed ah yea, half hour, ok duely noted, no oxygen for a half hour causes fire to go out
09:47 Tom_itx ok zhanx
09:47 Tom_itx got a bit of time inbetween, maybe i can finish these up
12:10 Tom_itx rue_mohr, http://www.nxp.com/news/press-releases/2011/10/nxp-cortex-m0-microcontrollers-in-high-volume-tssop-and-so-packages-target-8-16-bit-applications.html
17:16 coppermine im looking for a 12vdc robot platform
17:16 coppermine any suggestions?
17:16 coppermine with a motor controller kit
17:16 Tom_itx smart car
17:17 Tom_itx i see those and almost thing they are RC
18:16 aggrav8d hmm... reassembled my stewart platform with h bridge drivers. runs faster and smoother but i'm not sure I've got it put together right...
19:12 ckinator ordered one of these last night: http://processors.wiki.ti.com/index.php/EZ430-Chronos
19:12 duckinator was $25, including shipping (yay for tideals.com!)
19:14 rue_mohr gcc cannot list the processors it can compile for
19:15 duckinator gcc's always silly, you should expect things like that by now :)
19:15 rue_mohr ok aside from speed, whats good about it?
19:15 Tom_itx nor can you
19:15 Tom_itx rue_mohr
19:15 rue_mohr waaaaaaaaaaaaaaaaaaaaaait a sec
19:15 Tom_itx did you see those little arms?
19:15 rue_mohr avr gets 1 instruction per cycle typ, an arm is like 12 cycles/instruciton
19:16 Tom_itx really?
19:16 rue_mohr so the fact its 50Mhz means its slower than an avr
19:16 Tom_itx but it's 32bit
19:16 rue_mohr its not even as good as a m32
19:16 rue_mohr Tom_itx, what you gonna do with 32 bits on a microcontroller?
19:17 Tom_itx if i run outta fingers and toes i can use a few of em
19:17 rue_mohr most of your data is characters
19:17 rue_mohr 8 bits
19:17 Tom_itx my get up and go done got up and went
19:17 rue_mohr your numbers are uncommonly 16 bit
19:17 rue_mohr how much floating point you do?
19:18 Tom_itx handy for pid
19:18 rue_mohr I put a cat in the laundry hamper ONCE, now I cant keep them out
19:18 rue_mohr Tom_itx, yes...
19:18 rue_mohr but you know avrs can do pid just fine
19:20 rue_mohr ooo they do claim 50 mips
19:20 rue_mohr hmm
19:20 rue_mohr what speeds are avrs up to?
19:20 Tom_itx i dunno
19:20 Tom_itx 20 at least
19:20 rue_mohr I thought they had 30/40
19:20 Tom_itx dunno
19:21 duckinator rue_mohr: i think i heard of one at 40, as well
21:31 rue_mohr the stupid temperature went off the stupid top of the stupid chart agian
21:33 rue_mohr the servomuscle code will be a mix of "dpwm" (differential pwm) the solinoid driver code, and the current muscle timer code
21:46 zhanx someone said my name
21:46 zhanx oh Tom_itx did
21:46 zhanx Tom_itx pm me the price for that
22:05 Tom_itx ok i think i finished the parts for them
22:05 Tom_itx need to solder up the balls
22:06 Tom_itx tomorrow probably
22:06 Tom_itx too tired tonight
22:06 Tom_itx redid the plastic probe tips cause i wasn't happy with the first ones
22:38 e_mohr pours togethor a concoction of
22:39 Tom_itx http://tom-itx.dyndns.org:81/~webpage/emc/small_probe5.jpg
22:39 Tom_itx http://tom-itx.dyndns.org:81/~webpage/emc/small_probe6.jpg
22:41 Tom_itx zhanx
22:45 zhanx Tom_itx nice
22:45 zhanx i will solder it up
22:46 Tom_itx i need to poke a hole in the side for the wire
22:46 Tom_itx and wire them then i think they're done
22:46 Tom_itx i got some real good aircraft wire surplus i was gonna use
22:47 Tom_itx teflon jacket or some such plastic
22:47 Tom_itx 2 cond shielded
22:47 zhanx that awesome stuff
22:47 Tom_itx nice wire for sure
22:48 Tom_itx http://tom-itx.dyndns.org:81/~webpage/emc/probe_wiring2.jpg
22:48 Tom_itx that's teflon too i think
22:49 Tom_itx really hard to strip
22:49 zhanx running 10 miles for my plt tomorrow
22:49 Tom_itx i'll take pics of the inside tomorrow and maybe solder em up
22:49 Tom_itx long next couple days
22:50 Tom_itx i'm gonna get some shorter grub screws for mine
22:50 zhanx my plt is gonna hate me
22:50 Tom_itx prolly 1/8"
22:50 Tom_itx on the side
22:50 Tom_itx 4-40
22:50 zhanx i got 1/8 4-40
22:50 Tom_itx notice yours doesn't have any :)
22:51 Tom_itx laters
22:57 rue_mohr staging this code is gonna be a challange and a half
23:02 rue_mohr ooo I need completely new pwm code for this...
23:11 rue_mohr so the goal seems to create a function that will variably operate the solinoids
23:14 rue_mohr this function is normally setSpeed
23:14 rue_mohr but in this case I guess its adjustVolume
23:16 rue_mohr I'd like a short function name
23:16 rue_mohr er
23:16 rue_mohr its 23.5c in here, and I'm still not warm
23:20 rue_mohr ah, I'll call it ModForce
23:21 rue_mohr hmmm
23:22 rue_mohr I should do this open loop first
23:25 zhanx rue talks to himself
23:25 rue_mohr I do not!
23:25 rue_mohr you do
23:25 rue_mohr no no I dont
23:26 zhanx yyyessss
23:26 rue_mohr who you talking to then?
23:26 rue_mohr you
23:26 rue_mohr mhm
23:26 zhanx :P
23:26 rue_mohr what? thats your point!?
23:26 rue_mohr oh, nothing, nevermind
23:26 zhanx yes
23:26 zhanx :P
23:26 rue_mohr cmon, your trying to tell me something aren't you
23:26 zhanx back n the gym
23:26 rue_mohr no, nevermind, its prolly for the best
23:26 zhanx yes but you know what it is
23:26 rue_mohr I'll get you!!!! later...
23:26 rue_mohr what what is?
23:27 rue_mohr whats z talking about?
23:27 rue_mohr I dont know
23:27 rue_mohr want some icecream?
23:27 rue_mohr no, I'm cold
23:27 zhanx no
23:27 rue_mohr its 24c in here
23:27 zhanx warm
23:27 rue_mohr yes, but its just heated cold air, I'm still cold
23:27 rue_mohr I'm gonna get some icecream
23:27 zhanx pwm does what for what that is the question
23:28 rue_mohr your a sugarjunkie
23:28 rue_mohr pwm gets rid of linear power loss
23:28 zhanx for?
23:28 rue_mohr no it minimizes it
23:28 rue_mohr for your power control components
23:29 rue_mohr you were wrong, its not 24c in here
23:29 rue_mohr oh
23:29 rue_mohr its 24.5c
23:29 rue_mohr <---- cold!
23:29 zhanx not
23:29 rue_mohr no, its just in your head
23:29 rue_mohr no I'm cold
23:29 rue_mohr you cant be, seriously
23:30 rue_mohr I am, its cold in here
23:30 rue_mohr your crazy
23:30 rue_mohr IIIIII'm CRAZY!!!!!!!!!!!!!!????????????
23:30 rue_mohr your crazy
23:30 rue_mohr pff, I'm gettin icecream
23:33 rue_mohr DAMN THE HOUSE IS COLD
23:34 rue_mohr technically its 20c in the rest of the hosue
23:34 rue_mohr SEEEEE??? COLLLLLD
23:34 rue_mohr this concerns me
23:34 rue_mohr how so
23:34 rue_mohr when the toilet water freezes, thats cold
23:34 rue_mohr pff
23:34 zhanx whatever
23:34 zhanx cold is bad
23:35 zhanx :P
23:35 rue_mohr zhanx, dont side with him on this!
23:35 rue_mohr side with me anytime you like z
23:36 rue_mohr z did you see the airmuscle videos?
23:36 rue_mohr yes, I showed him yesterday
23:36 rue_mohr but did he see!?
23:36 rue_mohr yes, probably, yes
23:36 rue_mohr oh...
23:36 zhanx yes i did
23:37 rue_mohr were gonna have great fun with those
23:37 rue_mohr who could guess a condom, link panyhose, and loom could have such potential
23:38 rue_mohr silk
23:38 rue_mohr hu?
23:38 rue_mohr you said link
23:38 rue_mohr ph
23:38 rue_mohr you mean oh
23:38 rue_mohr geez, read into it a little aleady
23:38 rue_mohr I can only jump so high ya know
23:39 rue_mohr what are we doing
23:39 rue_mohr 15 mins to bed, were going to sleep
23:39 rue_mohr boiler seems done for the night
23:39 rue_mohr yup
23:40 rue_mohr remember to empty the ash outa the shopvac pls
23:40 rue_mohr right, I'll put a postit on the board
23:40 rue_mohr wasn't it full
23:40 rue_mohr nope, but I had to sweep up the floor today
23:41 rue_mohr oh DEFINITLY REMEMBER dont drive to sechelt tommorow
23:41 rue_mohr right, garden inn, got it
23:41 rue_mohr should we turn a circ pump off?
23:41 rue_mohr sure
23:42 e_mohr looks ar
23:42 rue_mohr gizzard, kinda quiet in here aint it?
23:43 rue_mohr sssh we huntin 'wabbit
23:43 rue_mohr mmm
23:44 lianSavior *B
23:44 e_mohr has a heart attack and drops
23:44 rue_mohr geeet up
23:44 rue_mohr is this heaven?
23:44 rue_mohr no
23:44 rue_mohr EEEEK!
23:45 rue_mohr rue?
23:45 rue_mohr oh, oh right, HylianSavior what you making?
23:45 rue_mohr WELCOME TO ROBOTICS
23:45 rue_mohr and all that
23:46 HylianSavior quadrotor :>
23:46 rue_mohr uh ho, a flyer
23:46 rue_mohr how far along are you?
23:46 HylianSavior http://dl.dropbox.com/u/538662/CIMG6076.JPG
23:46 HylianSavior the board i made is broken
23:46 HylianSavior redesigning using a different uC
23:46 rue_mohr did ya crash?
23:46 HylianSavior no, the board doesn't work :<
23:46 HylianSavior forgot to pull brownout pin low
23:46 rue_mohr what were you using?
23:46 HylianSavior welp
23:47 HylianSavior propeller
23:47 rue_mohr hhaha
23:47 HylianSavior next version will use XMEGA, probably
23:47 HylianSavior XMEGA looks nice
23:47 rue_mohr how much processing power are you using?
23:47 rue_mohr what are the arms made from?
23:47 rue_mohr how much battery time do you get
23:47 HylianSavior Hmm, well all I really need is to run an EKR
23:47 rue_mohr how you controlling it?
23:47 HylianSavior but I entertained notions of a lidar using a camera
23:47 HylianSavior hence, the Propeller
23:48 HylianSavior arms are from carbon fiber
23:48 HylianSavior batter time is ~30 min
23:48 HylianSavior (in plan) control through a CC1101 and chronos, joystick + launchpad, or laptop with dongle
23:52 rue_mohr cool
23:52 HylianSavior indeed
23:52 rue_mohr have you been able to hand fly it yet?
23:52 HylianSavior no
23:52 HylianSavior i have no control board
23:53 HylianSavior i've tested the motors though
23:53 HylianSavior definitely enough thrust
23:58 rue_mohr so I only want ot activate the load or unload valves
23:58 rue_mohr never the twain shall meet
23:58 rue_mohr I hate tristate stuff
23:58 rue_mohr waste of half a bit.
23:59 rue_mohr maybe I should employ some true tristate logic, I can with the avr