#robotics Logs

Oct 12 2014

01:14 rue_shop2 base almost finished
01:15 rue_shop2 drat, I used the 4 jaw to cut the next hole, I dont want to switch chucks now
02:07 rue_shop2 I avoided the problem by working on another peice, which I' now done
02:09 rue_shop2 ok i need a way to cut 42mm holes
02:09 rue_shop2 in theroy, I could make a hole saw ith my lathe
02:13 rue_shop2 designing holesaw...
02:13 rue_shop2 -
02:13 rue_shop2 \
02:13 rue_shop2 \
02:13 rue_shop2 |
02:13 rue_shop2 /
02:13 rue_shop2 -
02:13 rue_shop2 \
02:13 rue_shop2 |
02:13 rue_shop2 /
02:13 rue_shop2 -
02:15 rue_shop2 \|/-
02:39 mrdata did you drop something?
02:55 rue_shop2 I made a punch, but it shattered the pvc
02:56 rue_shop2 I'm considering using the cnc
02:56 rue_shop2 which will take another hour of programming
02:56 rue_shop2 OR, screw it, I'll hand cut it
02:56 rue_shop2 router...
02:58 e_shop2 wakes the cat up every 10 mi
02:58 rue_shop2 HAHA PAYBACK
04:10 rue_shop2 the base is finished
04:10 rue_shop2 but its 2am, this is not tracking out well
04:10 rue_shop2 between 11:00 and 1:45 kinda vaporized
04:12 rue_shop2 its a bit sleeker than the other one, this is good
04:12 rue_shop2 I think this was supposed to be cable driven tho...
04:15 rue_shop2 about 44 pieces so far
04:15 rue_shop2 inc bolts and nuts
04:31 rue_shop2 I dont want to use the jigsaw anymore cause its noisy and its gonna wake me up
04:33 password2 whatcha making?
04:33 shipu reads on Kalman fil
04:35 rue_shop2 robot arm 9
04:37 password2 ooh
04:49 rue_shop2 2:30 I think time is accelerating
04:49 rue_shop2 yea, I'm gonna give in and sleep
04:50 rue_shop2 thanks to giving, I can stay up till 2am tommorow
04:51 password2 noooo
13:20 rue_bed-aok can anyone do 11-4 for me?
13:20 deshipu 7
13:20 rue_bed-aok oh
13:21 deshipu np
13:21 rue_bed-aok I'd like the answer to be 8, is there anything we can change?
13:21 deshipu hmm, you would need a very large value of 11
13:21 rue_bed-aok wait, was I up till 4 or 4:30?
13:21 deshipu and a very small 4
13:21 rue_bed-aok is 11:02 close enough?
13:22 rue_bed-aok I think it was 4:00
13:22 rue_bed-aok so I'm not doing well here
13:23 e_bed-aok tries to go back unconcious for an
13:23 rue_bed-aok aok = asleep on keyboard
13:24 deshipu you need to rant on irc more about how underslept you are, no time for sleep ;)
13:25 rue_bed-aok could someone turn down the large hybrid nuclear reactor?
13:25 rue_bed-aok oh the hell with it, if I cant be asleep, I'll be not asleep
13:25 rue_bed-aok I still have tea left, I can be a zombie for a while
13:26 rue_bed-aok store blankly at my computer trying to figure something pointless out
13:27 rue_bed-aok I wonder how mych solar dust the earth collects every year
13:28 rue_bed-aok I wonder if the landfull is open today
13:28 rue_bed-aok I should go to work and get the wire I need for hte stpetc system
13:28 e_bed-aok segfa
13:29 rue_bed-aok I need a mini strapon piperack for the truck
13:30 m_itx tosses a bucket of ice water on rue
13:30 rue_bed-aok damn, my reactors fuel cache is out
13:32 rue_bed-aok maybe today I should work out interavr spi
13:33 rue_bed-aok I need an spi adc datasheet
13:33 rue_bed-aok or an i2c library for the t26
13:47 rue_house why do I not have a floor cleaning robot running around the house yet
13:51 ace4016 because you're too broke to buy a roomba?
13:52 rue_house why would I buy a roomba!?
13:53 rue_house you know how much hacking I'd have to do to it, might as well just build one from scratch
13:59 rue_house 1nF is '103'?
13:59 mrdata no
13:59 rue_house m u n p
13:59 mrdata 10nF is 103
13:59 rue_house 102 then, k
13:59 mrdata yep
14:00 rue_house cause 104 is .1uF which is 100nf...
14:00 mrdata yes
14:00 rue_house I'm gonna go get a shower
14:01 rue_house http://mirror.zaleski.org/public/BatteryCharger-12vSLA/BatteryCharger-12vSLA.html
14:01 rue_house think that schematic works?
14:18 mrdata probably
14:19 mrdata the discussion around it indicates the circuit has been tweaked to deal with problems of simpler designs
14:20 mrdata so i reckon this has really been built
14:30 rue_house 9 ohms is the sum total of the current limiting mechanism? hmmm
14:30 rue_house 0.9
14:30 rue_house apparently my alu isn't 1000% yet
14:31 rue_house 0.9ohms, 0.5A
14:32 rue_house ohm -r 0.9 -i 0.5
14:32 rue_house Wattage is: 0.225000
14:32 rue_house Current is: 0.500000
14:32 rue_house Voltage is: 0.450000
14:32 rue_house Resistance is : 0.900000
14:32 rue_house so the power setting on the resistors is quite gracefull
14:40 rue_house Xc=2Pif/c...
14:40 rue_house no...
14:41 rue_house damn brains take a long time to initialize
14:41 rue_house as c goes up, Xc goes down
14:42 rue_house as f goes down, Xc goes up
14:42 rue_house must be Xc=2Pi/fc
14:43 rue_house for f=60
14:43 rue_house pi/30c
14:44 rue_house 1mf = .001F
14:44 rue_house 2200uF is about 48 ohms
14:45 rue_house 5000uF is about 21R
14:45 rue_house AAAAAAAAAAAAAHHHHHHHH
14:45 rue_house I'm out of tea...
14:47 rue_house how am I supposed to get my pants on if I need to stand on the legs i'm inserting into them, ARG
14:55 deshipu the solution is simple yet brilliant
14:55 deshipu spray-on pants!
14:58 Tom_itx rue_house, sleep with em on
14:59 Tom_itx to clean yourself and your jeans just jump in the lake and drip dry
15:02 deshipu also, buy new ones when the old ones peel off
17:25 rue_house ok I took in the garbage from the stripped printers, picked up firewood, two printers, and vitimin pills
17:25 rue_house oh and wire for finishing the septic system
17:36 shipu watches the darpa robotics challenge
21:29 rue_shop2 mother found a toaster oven with an electronic control...
21:29 rue_shop2 think it uses a relay or solid state?
21:32 Tom_itx relay
21:32 Tom_itx http://38.media.tumblr.com/73c07e4662feb6d4174277185d35541a/tumblr_mul0eoy9SR1rl1mb7o1_400.gif
21:33 Tom_itx Golf ball hitting steel at 150mph, recorded at 70 000fps
21:33 rue_shop2 wow
21:33 rue_shop2 I'd think they would break
21:40 Tom_itx gonna work on a toaster oven?
21:43 rue_shop2 I'm using the old one to soften up some pvc
21:45 Tom_itx no reflow oven yet?
21:45 rue_shop2 I have a temp controller for the old one
21:45 rue_shop2 I have a new one I'm working on
21:45 rue_shop2 kinda
21:46 rue_shop2 I'm prolly gonna use your project as a leader soon
21:47 Tom_itx i may have to make a new silkscreen
21:47 Tom_itx or touch up the one i have
21:47 Tom_itx never tried that
21:47 rue_shop2 its gotta be pretty set by now
21:48 Tom_itx i've used / cleaned it quite a few times now
21:49 Tom_itx i should get it and look it over closely
21:57 Tom_itx i wonder what i could use to poke holes in it without tearing the cloth
21:57 Tom_itx needs to be really small
21:57 Tom_itx it actually looks pretty good
21:57 Tom_itx under the scope
22:01 rue_shop2 I know why I dont like glue, waiting for it to set it apain
22:08 Tom_itx ok found some wire
22:09 Tom_itx but it's too big
22:09 Tom_itx and it's .009" diameter...
22:10 Tom_itx wonder what else i could use
22:10 Tom_itx maybe if i sharpen it..
22:12 Tom_itx mmm the pin vise won't even hold it\
22:16 rue_shop2 how many holes you poking out?
22:17 Tom_itx not very many
22:17 Tom_itx a couple of the small letters fall right on the cloth
22:17 Tom_itx other than that it's in good shape
22:19 rue_shop2 wire strand
22:19 rue_shop2 ?
22:19 Tom_itx i have the smallest wire i can find
22:20 Tom_itx tried grinding a point on it
22:20 Tom_itx but it may still be too coarse
22:20 Tom_itx besides i tried on the edge of the mask and it pokes thru but the 'rubber' just moves back to cover it
22:21 Tom_itx need a way to clear it out but that's not possible now
22:21 rue_shop2 no, I mean stranded wire
22:21 Tom_itx i know what you mean
22:21 rue_shop2 like 1 strand of some #22 7+ strand
22:21 Tom_itx i doubt it's any finer than this
22:21 Tom_itx would bend too easy
22:21 Tom_itx this is steel wire
22:22 rue_shop2 the bond wire from an old cpu!
22:22 rue_shop2 :)
22:22 Tom_itx even softer... gold
22:24 orlock I seem to remember popping the case off a smoke alarm some time ago and seeing some 0.1" headers in there
22:24 Tom_itx ok i poked a few holes, we'll see if it improves it next week when the parts get here
22:25 Tom_itx it won't be any worse
22:25 Tom_itx rue_house, look at the 'B' on USB and you'll see what i mean
22:27 rue_shop2 the unjoin of the inside of the little one?
22:28 Tom_itx yeah i think
22:28 Tom_itx that's right where a strand of string is
22:30 rue_shop2 aha
22:30 rue_shop2 I think I found it
22:31 rue_shop2 the holes aren't parallel by about the same amount as the slump on the drillpress table when I dont lock it
22:34 Tom_itx heh, it's like editing in paint at pixel level only with a stick pin
22:35 Tom_itx i think it's better now but only time will tell
23:59 rue_house funny