#robotics Logs
Jul 13 2012
#robotics Calendar
00:29 rue_shop Triffid_Hunter, the trimmer line I have, seems to have fiber mixed in with the plastic
00:29 rue_shop huh
00:54 rue_shop chopping up some "ABS 700" to try out
00:59 tsmeow-afk is so out of en
01:01 rue_shop pvc didn't work
01:01 rue_shop the abs blobificated tho
01:02 katsmeow-afk what went wrong with the pvc?
01:02 rue_shop didn't melt, it just got soft
01:02 katsmeow-afk warm it more
01:02 rue_shop the pvc takes a lot of force
01:02 rue_shop that would be beyond warm
01:02 rue_shop it was already 260c
01:03 rue_shop I think I have a small hydraulic cylinder I can use
01:03 rue_shop and a 12V hyd pump
01:03 rue_shop hmmm
01:04 rue_shop hehe
01:04 rue_shop my small cylinder is 12" long
01:04 e_shop will make an injection molder
01:05 katsmeow-afk remember lil cassettes tapes?
01:06 rue_shop yes
01:06 katsmeow-afk the molds for those were held closed during injection by 4 stainless steel bolts 4 inches diameter, which occasionally broke
01:06 rue_shop :S
01:06 rue_shop the plug I just pulled out of the melting pipe is great
01:07 katsmeow-afk "great" ?
01:08 rue_shop cross section is almost solid
01:08 rue_shop I put in a bunch of peices
01:08 rue_shop if I set up the leverage right...
01:09 rue_shop I was just pushing by hand
01:16 katsmeow-afk records are not injecton molded tho
01:17 rue_shop stamped?
01:17 rue_shop (hot stamp?)
01:17 katsmeow-afk the olde 12" LP grooved music things? a hockey puck of melted plastic is put down int he center of the mold for one side, then the other side is brought down onto it, stamping it flat
01:18 katsmeow-afk as it's cooled by chilled water run under the molds, the squish-out and the hole are trimmed/cut
01:20 katsmeow-afk and yeas, the mold is preheated
01:21 katsmeow-afk i saw some movie of some fancy Japanese sword making where the mold was preheated along with the melt steel in the same furnace, why,,, i dunno, because that molding wasn't the final working of the steel
01:37 rue_shop pn2222 has too much voltage drop to use as a motor driver for a 3V supply
01:46 GuShH rue_shop: 2n7002
01:47 GuShH oh 3v
01:47 GuShH you are in a tight spot
01:47 rue_mohr mmm
01:48 rue_mohr at 4.5V 75mA 1.8 ohms
01:49 rue_mohr huh
01:49 rue_mohr how do i make a really cheap driver for 3V
01:49 GuShH is your input signal 3v also?
01:49 rue_mohr no
01:49 GuShH 5v?
01:50 GuShH that makes it easier
01:50 rue_mohr split supply, motor is grounded
01:50 rue_mohr +- 3V, the control signal swings from +3 to -3
01:50 ShH s
01:50 rue_mohr half bridge
01:52 rue_mohr under 6V the 2n7000 looks pretty useless
01:52 rue_mohr wonder what the continious current rating of a lm386 is
01:55 rue_mohr I suppose they never thought anyone would use it as a servo driver, no continious current rating
01:58 GuShH hmm what could cause the alarm to go pop-pop (the horn) it seems random
01:58 GuShH should monitor the battery but that can't be it
01:58 GuShH maybe a lose connection
01:59 e_mohr agr
02:01 rue_mohr a 555?
02:01 rue_mohr as a motor driver?
02:05 rue_mohr maybe
02:06 rue_mohr it looks like its rated 200mA with down to .1V dropout
02:06 katsmeow-afk why am i awake? i am exhausted
02:06 rue_mohr to tell me if a 555 can be used as a motor driver
02:06 katsmeow-afk i dunno it's saturation curves
02:08 rue_mohr http://talkingelectronics.com/projects/SpotMistakes/images/EFYMotorDriver.gif
02:08 rue_mohr aha
02:08 katsmeow-afk C-E saturation on a MPSA42 is .75v@50ma
02:09 katsmeow-afk C-E saturation on a MPSA92 is .20v@50ma
02:09 rue_mohr what do you have for pn2222?
02:10 katsmeow-afk arg, i don't
02:10 katsmeow-afk 2n4401 is .3v@500ma
02:11 rue_mohr ah, its pointed out the high side of the 555 has a 2V drop
02:11 rue_mohr on the bench the pn2222 is giving me 1.2V drop
02:11 katsmeow-afk 2n4403 is .5v@500ma
02:12 katsmeow-afk you see what i said for 2N4401?
02:13 katsmeow-afk 2N3906 is .3v@200ma, but it blows up at 201 ma
02:15 rue_mohr the 3906 I was using was worse tho
02:15 katsmeow-afk it's a signal transisitor, not power
02:15 rue_mohr I went with a pn2222 2n3906 pair (3906 is pnp yes?)
02:16 katsmeow-afk and fets are good only if you can get 5v gate voltage on them
02:16 katsmeow-afk 3906 is a weak transistor, you going to keep motor current under 200ma?
02:16 rue_mohr its a 3V motor
02:16 rue_mohr so...
02:16 katsmeow-afk yeas, 3906 os pnp
02:17 katsmeow-afk i doesn't care what it's voltage is, if i put 3v on a car starer it's gonna pull over 200ma
02:27 katsmeow-afk C-E vsat on MJ21195 and MJ211196 goes below .1v at 1amp
02:29 katsmeow-afk MJD122 is .4v@300ma
02:29 katsmeow-afk 1.5v@6amps
02:30 katsmeow-afk MJE13002 is .3v@1.5amps , but it's gain is so bad, that's at 1amp base too
02:31 katsmeow-afk at 100ma base, it will do .2v@500ma
02:38 katsmeow-afk 100 PCS P/N MJD127T4 TRANSISTOR DARL PNP 100V 8A DPAK
02:38 katsmeow-afk Location: Florida,United States Store: AG COMPONENTS INCSeller User Id: kfiros17Feedback: 1,317 | 99.5%Returns: Accepted within 14 days Buy It Now
02:38 katsmeow-afk or Best Offer $19.99
02:38 katsmeow-afk +$3.95 shipping Time left:
10:40 rrywolf stretches out next to katsmeow-
10:41 furrywolf grrrr. I want the weather to get nicer!
10:46 rue_mohr oh there is the transistor you spoke of
10:48 rue_mohr kat, the idea is to drive it with logic level currents
10:55 rue_mohr it looks like dip relays are ~ $4
10:57 rue_mohr http://www.ebay.ca/itm/2PCS-RELAY-RY5W-K-TAKAMISAWA-DIP-8-/260964801437?pt=LH_DefaultDomain_0&hash=item3cc2b6db9d
10:57 rue_mohr ah 1.50
10:58 furrywolf grrrr, I wanted to get more outside, but the rain just came back!
10:59 furrywolf it's not hard rain, just drizzle... the kind that soaks you completely.
11:01 rue_mohr katsmeow-afk, I have 0.95 for making two motor drivers
11:01 rue_mohr I hve 6V, +-3 if one likes
11:01 rue_mohr dosn't HAVE to be bi-directional, but would be nice
11:02 rue_mohr 3-6V motor
11:07 rue_mohr ok I found some room, there is 1.45 for a motor driver
11:15 rue_mohr hmm
11:16 rue_mohr wonder if I should shave the cost by having them make their own relays
11:16 Tom_itx hamlin relay
11:16 Tom_itx he101
11:16 furrywolf ?
11:16 Tom_itx look it up
11:16 rue_mohr 1 screw, bit of steel flashing, and a hell of a lot of fine wire
11:16 m_itx glares at rue_
11:16 furrywolf who is them, and how do you propose to make a decent relay by hand?
11:16 rue_mohr $10 in new parts is even hard for me
11:16 rue_mohr http://boingboing.net/2012/07/10/10-robot-challenge.html
11:17 rue_mohr the controller is $4
11:17 rue_mohr the motors are $2
11:17 Tom_itx making a DIY reprap now?
11:17 rue_mohr I'm left with about $1 for driving the mtoors
11:18 rue_mohr I think its possable to make a relay for about 5c or less
11:18 theBear steel flashing ? that doesn't sound like how you make a relay
11:18 Tom_itx theBear apparently you haven't met rue_mohr
11:18 Tom_itx :)
11:18 theBear you wanna find some spring steel for longevity... maybe the coil from an old thermostat or clock ?
11:18 furrywolf it's unlikely you'll get acceptable life expectancy from a homemade relay.
11:18 furrywolf surely you can pick up a couple to220 h-bridge chips for $1?
11:19 theBear heh, i've had the guy work my breadboard and sleep on my couch :) just sometimes, he seems to forget the obvious <grin>
11:19 Tom_itx i know
11:19 rue_mohr furrywolf, heh
11:19 rue_mohr furrywolf, we have a 3-6V motor, with 6V of batteries
11:20 rue_mohr you have to understand most motor drivers drop 1V/half bridge
11:20 furrywolf bull. they make ones for low voltages, with low rdson mosfets.
11:21 rue_mohr I have $1 in whcih to drive 2 motors
11:21 rue_mohr go ahead, see if you can solve it
11:21 furrywolf you could probably get eight mosfets for $1. :P
11:21 rue_mohr cmon, you have the internet, probably dosn't cut it
11:22 furrywolf you're the $1 deal expert.
11:22 rue_mohr Tom_itx, I cant find anythng for he101
11:22 rue_mohr furrywolf, there are no drivers I can find for $1
11:23 rue_mohr it cant be smt either
11:23 GuShH anything else?
11:23 GuShH does it have to give you massages also
11:23 rue_mohr I cant do this
11:23 GuShH :(
11:24 rue_mohr I need to write a program that you enter a wire guage, and it tells you ....
11:24 furrywolf how much current do the motors pull?
11:24 rue_mohr there is a peak, for a magnetic coil where adding more turns dosn't give you more magnetic flux
11:25 rue_mohr I would need to make the coil not larger than 1cm^3
11:25 Tom_itx rue_mohr
11:25 Tom_itx you're not playing sparkie today
11:25 rue_mohr but at 20mA it would need to pull the steel strip well
11:25 rue_mohr I took the say out, almost nothing happening at work
11:26 rue_mohr I have a bunch of people getting back to me on monday about things
11:26 Tom_itx so it will hit the fan on monday then
11:26 rue_mohr there is a chemistry analizer at the hospital I'm looking to scoop today
11:27 furrywolf I can't look up driver chips without knowing how much current you need...
11:27 rue_mohr its a tiny 3V motor
11:27 rue_mohr I could measure the stall current for ya
11:28 furrywolf unfortunately, it looks like the no-smt requirement kills it.
11:28 furrywolf all the low voltage, cheap parts are smt.
11:30 Tom_itx yeah it's 2012 get with the program
11:31 rue_mohr no load .25A stall 0.8A
11:31 furrywolf wow, little motors.
11:31 rue_mohr its supposed to be producable by kids
11:31 rue_mohr did you read the article?
11:31 rue_mohr http://boingboing.net/2012/07/10/10-robot-challenge.html
11:32 Tom_itx with what IQ?
11:32 rue_mohr I cant get over them saying servos
11:32 rue_mohr heh
11:33 Tom_itx rue_mohr did you see my plexi cutout?
11:33 rue_mohr doing it all dead bug would save $0.50
11:33 rue_mohr no
11:33 rue_mohr where?
11:33 Tom_itx pretty happy with the results of the circles
11:34 rue_mohr could make 4 relays
11:34 Tom_itx http://tom-itx.dyndns.org:81/~webpage/cnc/cnc_files/millholder1.jpg
11:34 Tom_itx it's gonna hold my cutters
11:34 rue_mohr nice
11:34 Tom_itx http://tom-itx.dyndns.org:81/~webpage/cnc/cnc_files/millholder2.jpg
11:34 rue_mohr do you cool it?
11:35 Tom_itx they mic within .001 being round
11:35 Tom_itx no
11:35 Tom_itx turn and burn
11:35 Tom_itx much better than before all these updates
11:36 rue_mohr feed rate too slow before?
11:36 Tom_itx the spot drills are for odd sizes i haven't decided on yet
11:36 Tom_itx i dunno
11:36 rue_mohr ok 2 relays
11:36 Tom_itx i got new carbide cutters
11:36 rue_mohr one spdt and spst
11:36 Tom_itx i'm sure that helped
11:36 rue_mohr its blowup-proof
11:38 Tom_itx http://tom-itx.dyndns.org:81/~webpage/boards/USBTiny_Mkii/Boxes/milling1.jpg
11:38 Tom_itx you can see the old holder on the left there
11:38 rue_mohr the drawing for hte relay looks good
11:38 Tom_itx stick a flat piece under these holes to keep them from falling thru
11:39 e_mohr looks for head cra
11:39 Tom_itx when do you expect your reprap stuff?
11:39 rue_mohr dunno
11:39 rue_mohr its from the states, so, descent shipping should be here soon
11:39 rue_mohr $30 in shipping
11:40 Tom_itx woah
11:40 Tom_itx that's like 30 items from ebay
11:40 rue_mohr I expect it to arrive on a gold platter
11:40 Tom_itx don't get your hopes up
11:40 rue_mohr you gonna shroud your forward/back axis?
11:40 Tom_itx next thing may be a rotary axis
11:41 Tom_itx i dunno, i probably should
11:41 rue_mohr I bet $15 of that was handling
11:41 Tom_itx there's hardly any room to cover it
11:42 rue_mohr mechanical limit switches, you have to re-zero on every powercycle eh?
11:42 Tom_itx it uses the whole slide
11:42 rue_mohr a hood fixed to the table
11:42 furrywolf http://www.digikey.com/product-detail/en/DMC2400UV-7/DMC2400UV-7DITR-ND/2918383 they're surface mount, but $0.07/half-H
11:42 furrywolf 1A continuous, logic-level gate
11:43 rue_mohr dude, can that even BE dead-bugged?
11:43 Tom_itx i have some neoprene sheet i could use i suppose
11:43 rue_mohr o was... sot
11:43 theBear sif you couldn't dead bug it
11:44 rue_mohr .5mm
11:44 rue_mohr hmm
11:45 Tom_itx http://tom-itx.dyndns.org:81/~webpage/cnc/psu/heatsink.jpg
11:45 furrywolf cheap + DIP seems to be incompatible.
11:45 Tom_itx rue_mohr, that's the new thicker workplate
11:45 theBear remember, just 'cos i could do it doesn't mean any normal person can :)
11:45 Tom_itx 1" iirc
11:45 rue_mohr furrywolf, for 7c, I think I can make a relay
11:45 furrywolf you could put four of those on a little pcb and consider it a module, still only cost 30 cents.
11:45 Tom_itx working on the heatsink there
11:45 furrywolf your relay will still need a switch to drive the coil.
11:45 rue_mohr but the cost of producing a pcb would kill it
11:45 rue_mohr no
11:45 rue_mohr not if I give it enough turns
11:46 rue_mohr 6V, 10mA
11:46 Tom_itx make it ttl driveable
11:46 Tom_itx he101 is
11:46 rue_mohr cubic cm of 80 guage wire?
11:46 rue_mohr I cant find existance of a he101
11:46 Tom_itx pfft
11:46 rue_mohr unless its a bird bath
11:47 furrywolf 80 gauge? no kid is going to wind that by hand without breaking it. and wire isn't cheap.
11:47 Tom_itx http://www.digikey.com/product-search/en/relays/signal-up-to-2-amps/1049448?k=HE101
11:47 rue_mohr no, but if you have a drill you can do it
11:47 Tom_itx how hard was that?
11:47 rue_mohr dude 1 costs $3
11:47 rue_mohr and dosn't g down much
11:47 Tom_itx it's $1 i f you get 5000
11:48 Tom_itx put the rest on ebay
11:48 rue_mohr I only have $1 to drive 2 motors!
11:48 Tom_itx oh hell rue_mohr!!
11:48 Tom_itx i got some you can have
11:48 Tom_itx they're hamlin but bigger
11:48 rue_mohr nono
11:48 Tom_itx someone sent them to me
11:48 rue_mohr this is for http://boingboing.net/2012/07/10/10-robot-challenge.html
11:49 rue_mohr so everything needs to be continiously sourcable
11:49 rue_mohr if I could scounge parts, I could prolly do this for $3
11:49 furrywolf I found parts that'll do what you want. even with pcb costs, it'll be under $1.
11:49 rue_mohr (the whole robot)
11:49 rue_mohr furrywolf, I think your underestimating pcb costs
11:50 rue_mohr furrywolf, dont get me wrong, I REALLY like those
11:50 furrywolf those chips I pasted above are a whole 7 cents. you'd need four of them for two motors. that's 28 cents. a pcb a half inch square shouldn't cost more than 72 cents...
11:50 furrywolf dead bug construction is a bad idea anyway... make the whole thing on a pcb. :P
11:51 rue_mohr 14c cause it can be set up as a totempole driver
11:51 furrywolf yes, and you need four totempole drivers to make two h-bridges.
11:51 rue_mohr I can split the supply, I dont need any h bridges
11:52 rue_mohr +-3V
11:52 furrywolf oh, that makes life even easier.
11:52 rue_mohr yes
11:52 furrywolf actually, no, that'll make driving the gates a pain.
11:52 rue_mohr no
11:52 rue_mohr cause the gates go from -3 to +3
11:52 rue_mohr cause the logic is across the 6
11:53 rue_mohr 2 bit 'DAC'
11:53 rue_mohr where 00 is 0
11:53 rue_mohr 01 and 10 are 3V and 11 is 6V
11:53 rue_mohr fwd/stop/stop/rev
11:53 furrywolf http://www.digikey.com/product-detail/en/AOP610/785-1143-5-ND/1855915 cheapest suitable DIP part I can find... 78 cents each, which will be too much.
11:54 rue_mohr by just a bit
11:54 furrywolf if you order 10000 then they're only 25 cents each! P
11:54 furrywolf :P
11:54 rue_mohr I got some of those, but thier obsolete
11:54 furrywolf the dip requirement eliminates most parts.
11:54 rue_mohr a 50 thou pitch would be ok
11:55 rue_mohr that could be dead bugged
11:55 rue_mohr hmmm
11:55 rue_mohr furrywolf, I think, what I'm gonna do
11:55 furrywolf how can I buy an entire mp3 player, with lcd display, for $8 including shipping, but we can't drive a motor for less than $1? :)
11:55 rue_mohr is use homebrew relays, but make a footnote with what you said
11:55 rue_mohr crazy isn't it?
11:56 furrywolf the mp3 player has a cpu, battery, amplifier, display, memory, etc, etc, etc....
11:56 furrywolf buttons, lights, jacks...
11:56 rue_mohr cause, I DO believe you that using those, a small card could be made for sub $1 to drive the mtoros
11:56 rue_mohr part of the problem is I cant prototype it that way
11:56 furrywolf home-made relays are going to be time-consuming and unreliable.
11:56 rue_mohr yup
11:57 rue_mohr but will fit the budget
11:57 furrywolf and will make people think your product is crap when it doesn't work.
11:57 rue_mohr I took leeway on the term 'programmable' too
11:57 rue_mohr well lets see!
11:57 rue_mohr my controller is $4
11:57 rue_mohr can you find a microcontroller for sub $4?
11:58 furrywolf just the chip, or an entire dev board?
11:58 m_itx outsources his to china and has it done for $
11:58 furrywolf some of the msp430 series are a few cents and need minimal external parts...
11:58 rue_mohr Tom_itx, with that 50c I coudl switch to the dip driver chips
11:58 furrywolf LeelooMinai is the expert on them, though - I've never used one.
11:59 rue_mohr haha actually, I can do way better than $4 with an attiny
11:59 Tom_itx attiny10
12:00 furrywolf I'd give serious thought to putting the whole thing on a small pcb rather than dead-bug.
12:00 furrywolf dead-bug sucks.
12:00 furrywolf badly.
12:00 Tom_itx we're on a budget here
12:00 Modeuse hello
12:00 m_itx removes rue_mohr's shop door and puts it on
12:00 furrywolf it'll turn into a nightmare blob with a 50% chance of working and that no kid will be able to troubleshoot.
12:00 rue_mohr even an atmega48 from dk is just $2
12:00 rue_mohr huh
12:01 Modeuse hello rue_mohr
12:01 eBear bids $1 for said
12:01 rue_mohr I'm upgrading
12:01 rue_mohr hello
12:01 e_mohr bid
12:01 theBear doh !
12:01 Tom_itx furrywolf it won't work and he won't be able to debug it but he'll sure be proud of it
12:02 furrywolf before or after smashing it out of frustration?
12:02 Tom_itx take your pick
12:02 rue_mohr wow, not I got almost $4 left
12:03 furrywolf yeah, that's not how to get kids interested in ever doing anything with electronics again. :P
12:03 m_itx takes rue_mohr's shop window out and puts it on
12:03 e_mohr bid
12:03 m_itx counts the money he's getting from rue_mohr to buy parts from c
12:03 rue_mohr furrywolf, :( find me a dip comp fet thats still in production
12:04 Tom_itx 754410
12:04 Tom_itx not good enough?
12:04 rue_mohr I think its too much voltage drop
12:04 Tom_itx that would blow your budget
12:04 Tom_itx 2n2222 x 4
12:04 rue_mohr no
12:05 rue_mohr they dont work, tried it
12:05 Tom_itx fun to watch em pop though
12:05 rue_mohr toooooooooooooooooo much voltage drop
12:05 furrywolf I found very little in dip.
12:06 rue_mohr http://www.digikey.com/product-detail/en/DMC2020USD-13/DMC2020USD-13DICT-ND/2639348
12:06 rue_mohr deadbug!
12:07 rue_mohr and I have $3 left!
12:07 Tom_itx FDN337N
12:07 Tom_itx STC5NF30V
12:07 Tom_itx PMV30UN T/R
12:08 Tom_itx 568-2353-1-ND
12:08 Tom_itx 497-4327-1-ND
12:08 Tom_itx FDN337NCT-ND
12:08 Tom_itx in reverse order
12:08 furrywolf deadbug _sucks_. you're not going to make a successful product using it.
12:08 rue_mohr ok hold on, there is suddenly enough room to doubel the size of this robot
12:09 rue_mohr furrywolf, call it prototype
12:09 rrywolf gives up and wanders
12:10 rue_mohr your doing good, but going from a 27256 based controller to a atmega48 free'd up $2
12:10 Tom_itx you forgot about the $30 shipping
12:10 rue_mohr which is good I need room for the flashing to make the wheels
12:11 rue_mohr I'll leave 1c in for shipping and say it has to be distributed across the production set :)
12:11 rue_mohr I still cant source new coathangers
12:11 rue_mohr I'll use nails for axles
12:12 Tom_itx http://www.google.com/imgres?imgurl=http://herb-magic.com/nails-square-large.jpg&imgrefurl=http://herb-magic.com/nails-square-cut.html&h=684&w=900&sz=405&tbnid=39H0UecH6JMlFM:&tbnh=102&tbnw=134&zoom=1&usg=__kIxVx1FvfDLoSSjNIzrz37Cprfc=&docid=dGl4zgyrYrNjvM&sa=X&ei=Y1QAUOb8MImi2gXU6b2RBA&ved=0CHAQ9QEwAg&dur=1324
12:12 Tom_itx those?
12:16 rue_mohr :) those look like good axles, lots of damping
12:17 Tom_itx did you see the mythbusters one that had square wheels on their pickup?
12:25 rue_mohr no
12:25 rue_mohr did it decrease engine efficiency at all?
12:25 rue_mohr (I dont know if thats possable with an internal combustion engine)
12:53 katsmeow-afk [10:44] <rue_mohr> it looks like dip relays are ~ $4 <<== seriously??? i been buying them for under 50 cents!
12:54 katsmeow-afk just got 60 12vdc 20amp relays for $14
12:55 katsmeow-afk 100 P&B 12vdc 2amp spdt for $15
13:37 furrywolf blah, out of potting soil again, and fertilizer too.
13:39 katsmeow-afk plants getting potted, eh?
13:40 furrywolf yep
13:40 furrywolf after realizing one of the brands of soil I used fucking sucked, I'm re-potting everything I had in it.
13:41 furrywolf plants in Black Gold Organic Seedling Mix are about 1/4 the size and yellow, while the plants in Gardner and Bloome Organic Potting Soil are about four times larger and dark green...
13:41 katsmeow-afk <ambiguity parse error>
13:41 MrBIOS- hey folks
13:42 furrywolf as an experiment, after realizing there was a problem, I added fertilizer to some of them, and they quickly perked up... so it seems the black gold soil is lacking in nutrients.
13:42 furrywolf I don't know if I got a bad bag (poorly mixed) or the soil is just crap, but nothing I put in it is doing well.
13:42 MrBIOS- if anything, that soil is probably *lacking* in crap :)
13:43 furrywolf yep.
13:43 furrywolf it appears to be about 95% peat, 5% perlite, and 0% anything nutritious.
13:43 MrBIOS- hehe
13:44 MrBIOS- Anybody here in or around the SF bay area/Silicon Valley?
13:44 furrywolf I'm 7 hours north, does that count? :P
13:44 MrBIOS- heh, Ashland?
13:44 MrBIOS- it depends, I'm trying to find someone who could use a large collection of servos and motors
13:45 furrywolf I could use a large collection of servos and motors... and I've heard of this wonderful place called FedEx... :P
13:45 furrywolf well, what kind of servos and motors? industrial control?
13:45 MrBIOS- thing is, they need to br stripped :)
13:46 MrBIOS- the kind that live inside broadcast-grade Video Tape Machines
13:46 MrBIOS- I have a bunch of units in storage, and I refuse to just toss them out, because their antiquated, but at the same time, I recognize that they have more value to people today as constituent parts than as units
13:47 furrywolf hrmm, probably a bit small for making anything I'd build.
13:47 katsmeow-afk go for it, furry
13:48 katsmeow-afk what size cassettes?
13:48 furrywolf and I can't drive 14 hours for parts I don't really need. :)
13:48 MrBIOS- it's S-VHS
13:48 katsmeow-afk 14 hours, ouch
13:48 katsmeow-afk oh, lil ones
13:48 katsmeow-afk i have 3 U-Matics i need to strip
13:48 MrBIOS- I'd be willing to part one deck out on my own
13:49 katsmeow-afk it would be 3 days for me to drive there, so that's out
13:49 MrBIOS- yeah I sold the U-matics a while back, I also have two Betacam DT decks which are physically a lot larger than the 4U S-VHS Panasonic decks
13:50 furrywolf I want servos that have a horsepower rating on the side.
13:50 MrBIOS- hehe
13:50 katsmeow-afk do you know if they have full frame tbc's in them?
13:50 MrBIOS- katsmeow-afk, most of them do, yes, they came from a broadcast UHF station that was once operated by my father, long ago
13:51 katsmeow-afk ah, ok, furry, they have 20Mhz adc and dac chips in them, and lots of static ram
13:51 katsmeow-afk 8bit
13:51 furrywolf gas cost > ebay cost
13:51 katsmeow-afk oh
13:51 MrBIOS- furrywolf, where exactly are you?
13:51 furrywolf MrBIOS-: eureka area
13:51 MrBIOS- we could always meet halfway
13:51 furrywolf and I don't have any use for them. heh.
13:51 MrBIOS- furrywolf, ah okay, I'm originally from Sonoma County
13:52 MrBIOS- no worries
13:52 furrywolf if you had some servos big enough to build a large cnc table, those I could use...
14:02 katsmeow-afk well, they also have psu in them, sensors, lots of high speed analog and digital video processing chips
14:04 katsmeow-afk i dunno what vintage these vcr are, but a late 1970's broadcast TBC was a 2U rackmount and crammed full of chips, i know, i did prototype engineering on some back then
14:05 katsmeow-afk i go afk, bbl
14:15 furrywolf bbl, buying more soil.
14:37 Modeuse hello superkuh
14:37 superkuh Hello.
14:37 Modeuse how are you?
14:37 superkuh Fine.
14:38 Modeuse nice to hear
15:31 MrBIOS- katsmeow-afk, they're from the mid-90s
16:02 e_mohr can be heard in the distance, grunting and stai
16:07 e_mohr seems to be getting closer with the no
16:10 e_mohr smashes through the wall into the channel behind a verry large machine hes got a firm grip on, trying with all his might to bring it to a stop before it goes thru the other wall and back out the cha
16:10 rue_mohr http://eds.dyndns.org/~ircjunk/images/p1040234.jpg
16:11 rue_mohr http://eds.dyndns.org/~ircjunk/images/p1040235.jpg
16:11 rue_mohr http://eds.dyndns.org/~ircjunk/images/p1040236.jpg
16:11 rue_mohr http://eds.dyndns.org/~ircjunk/images/p1040237.jpg
16:11 rue_mohr http://eds.dyndns.org/~ircjunk/images/p1040238.jpg
16:11 rue_mohr http://eds.dyndns.org/~ircjunk/images/p1040239.jpg
16:11 rue_mohr http://eds.dyndns.org/~ircjunk/images/p1040240.jpg
16:11 rue_mohr http://eds.dyndns.org/~ircjunk/images/p1040241.jpg
16:11 rue_mohr http://eds.dyndns.org/~ircjunk/images/p1040242.jpg
16:12 e_mohr takes a bit of a rest after bringing it to a
16:12 rue_mohr ok who can tell me what it is?
16:13 rue_mohr 'dimension xpand plus' isn't a valid answer
16:13 rue_mohr http://www.medical.siemens.com/webapp/wcs/stores/servlet/ProductDisplay~q_catalogId~e_-111~a_catTree~e_100001,1023065,1015816~a_langId~e_-111~a_productId~e_181944~a_storeId~e_10001.htm
16:14 rue_mohr its an integrated chemistry system
16:14 rue_mohr whats that?
16:15 rue_mohr 800lbs, thats about right
16:18 Modeuse 0o
16:22 furrywolf I can't load the images now, but if it's what I'm thinking it is, parts for it are _expensive_.
16:22 anannie PCR machine?
16:22 rue_mohr were you the one making the test tube thing
16:22 rue_mohr ?
16:22 furrywolf they have them at the hospitals here, and are more than happy to pay us several hundred bucks to deliver parts asap...
16:23 rue_mohr I'll see if I have the energy to start breaking it down today
16:23 rue_mohr looks like there is a HUGE isolation transformer in it
16:23 anannie rue_mohr: What is it? I'm going with PCR machine for now
16:24 rue_mohr its a Integrated Chemistry System
16:24 rue_mohr (???)
16:24 anannie so spectrometer?
16:24 anannie COOOL
16:24 Modeuse seems to be
16:24 rue_mohr I dont know
16:24 rue_mohr it would be cool if its got a spectrum a in it
16:24 anannie Let's vaporise a sample and see what it can tell us xD
16:25 furrywolf yep, it is what I think it is.
16:25 furrywolf part it out on ebay.
16:25 rue_mohr haha
16:25 rue_mohr its been pretty stripped already
16:25 Modeuse how do you get it?
16:25 rue_mohr furrywolf, your the expert, take a look at the images later and you tell me
16:25 rue_mohr the hospital paid us to dispose of it for them
16:25 rue_mohr :)
16:26 furrywolf I got to drive the power supply from one of those 300 miles at 3am about five months ago...
16:26 lostcauz It's a machine that tests thc content of cannabis.
16:26 rue_mohr done deal!
16:26 rue_mohr I have the power supply
16:26 rue_mohr whats that worth?
16:26 rue_mohr :)
16:26 anannie rue_mohr: Can I please, please, please have this? I promise to forfeit all rights to presents from santa
16:26 rue_mohr 24V 35A
16:26 rue_mohr hah
16:26 rue_mohr anannie, did you look at the images?
16:27 anannie rue_mohr: and see how my poor baby has been ripped apart?
16:27 anannie rue_mohr: yeah
16:27 rue_mohr furrywolf, I think the io cards are gone, and a pile of steppers
16:27 furrywolf it's not for analyzing random chemicals. it's a blood chemistry analyzer.
16:27 rue_mohr ah
16:27 anannie furrywolf: Which is way cooler... xD
16:27 rue_mohr it was linked to the computer with a 4 port rs232 cards
16:27 furrywolf you put in a blood sample, and it measures a whole bunch of things at once.
16:27 rue_mohr card
16:28 rue_mohr anannie, see anything you want to pay for shipping for?
16:28 furrywolf yeah, looking at the pics, it's pretty stripped... I guess they already determined which bits were the most valuable, and parted it out themselves.
16:28 rue_mohr no
16:28 furrywolf every non-trivial part in it is over a thousand bucks.
16:28 rue_mohr a hobbyist got at it :)
16:29 furrywolf ah, that could do it too.
16:29 anannie rue_mohr: I'm guessing the valuable spectrograph, the vaporiser and all of that have been rippedo ut
16:29 rue_mohr I saw enough of interest to take it
16:29 rue_mohr i dunno
16:29 anannie BTW, wouldn't it be amazing to reduce all of that into something that can attach at the end of a say iPhone?
16:29 furrywolf they don't use spectrographs, as far as I know.
16:30 furrywolf it's mostly automated reagent testing
16:30 anannie furrywolf: Ah I see
16:30 rue_mohr furrywolf, your company deal with this stuff alot?
16:30 furrywolf http://www.medical.siemens.com/webapp/wcs/stores/servlet/ProductDisplay~q_catalogId~e_-111~a_catTree~e_100001,1023065,1015816~a_langId~e_-111~a_productId~e_181944~a_storeId~e_10001~a_view~e_130.htm there's the list of things it can measure when working.
16:30 anannie furrywolf: So basically this does tests for specific enzymes, proteins and all of that good stuff?
16:31 furrywolf rue_mohr: they have one at the hospital I deliver to every day, and several of the other local hospitals. we also deliver parts for them. they're the main workhorse at a small hospital, and when it's down, staff workload increases dramatically, and many tests can't be ran.
16:31 anannie furrywolf: This is amazing
16:32 rue_mohr ah
16:32 Modeuse rue_mohr why have you destroyed it ^^
16:32 rue_mohr cause I'z gonna say if you want to select parts to buy 'as scrap' I'd be into that, I'd want like $40 min in parts tho :)
16:32 rue_mohr Modeuse, I didn't
16:33 rue_mohr so far I'v only taken off a few side panels
16:33 furrywolf selling parts is hard, as most hospitals just have a contract with siemens, and they service it.
16:33 anannie furrywolf: With all of those advances in micro-fluidics happening do you think it's possible to minitiarise this? Maybe you don't even need reagents and if you could use specifically sized pores, move the fluid through them and then use electrical, physical properties of particular compounds you could do teh assay within a device that can go into someone's pocket
16:33 furrywolf and they don't buy used parts.
16:33 rue_mohr yep
16:33 anannie furrywolf: Is that possible?
16:33 furrywolf anannie: dunno. I'm not a chemist.
16:34 anannie furrywolf: Oh
16:34 rue_mohr so I'll just tear it down and turn it into menial projects
16:34 rue_mohr meanial
16:34 rue_mohr ...
16:34 furrywolf or ebay. I've seen parts sell on ebay... probably to 3rd world countries. heh.
16:34 rue_mohr who has a good idea what I can make outa that
16:35 rue_mohr oh
16:35 rue_mohr cant charge much, dont know what works and what dosn't
16:35 anannie rue_mohr: What parts do you have?
16:35 furrywolf anannie: I work as a courier driver. I see the machine because I'm in the lab doing deliveries/pickups, not working on the equipment. :)
16:35 rue_mohr as seen in the pics
16:35 anannie I would use this to start a company
16:35 anannie furrywolf: Oh
16:35 rue_mohr guess I'll go strip off the covers
16:36 annie doesn't work for the NSA doing image analysis and can't tell what else is t
16:36 rue_mohr want to see where all the serial lines go
16:36 rue_mohr I can blow up some of the images if youwant
16:36 rue_mohr I dont want to post them all full size
16:37 rue_mohr hackman127 donates the space and I dont want to abuse it
16:37 anannie rue_mohr: Oh... So maybe what you could do is start a company? xS
16:37 furrywolf if it's been less than a few months since it was taken out of service, observe basic biohazard precautions.
16:37 rue_mohr I have a dayjob, I'm good
16:37 furrywolf don't touch anything that's still liquid, and wash your hands afterwards.
16:38 rue_mohr furrywolf, they already decontaminated it
16:38 Modeuse rue_mohr i have write laste year that some chemist work at home and are looking for equipment ^^
16:38 rue_mohr but I'm carefull
16:38 rue_mohr its 800lbs, not worth shipping
16:38 anannie rue_mohr: I'm not kidding, you could always try to refurbish this and design a basic in home lab and then do bio-hacking on this... See if you can make glowing fishies :D
16:39 rue_mohr er, no, thats not on my todo list
16:39 furrywolf anannie: 1) it's missing too many parts. 2) it doesn't do that.
16:39 rue_mohr besides, they already destroyed the computers hard drive and I'msure that costs $10000 min
16:39 furrywolf all it does is measure various chemicals in blood and urine.
16:40 Modeuse do you mean the PLC?
16:40 rue_mohr its just a pc with a quad port serial card
16:40 anannie furrywolf: It can be repurposed to do that... That PSU can run a whole bunch of things! He could even make a centrifuge, a PCR out of a simple lightbulb and s oon
16:40 anannie * so on
16:40 anannie That would be oh so awesome
16:40 rue_mohr I think the centrefuge is still in tact
16:40 anannie :)
16:40 rue_mohr I'm thinking of using the pc for an upgraded jukebox in the shop
16:41 rue_mohr they took the bracket for the hard drive tho :(
16:41 rue_mohr but today I have a $10 robot design I want to work on
16:41 rue_mohr its a nice distraction
16:42 rue_mohr where are my snippers, I'm gonna go pick at it..
16:42 Modeuse rue_mohr don't sell the PC
16:45 furrywolf bbl, work
16:46 Modeuse have fun furrywolf
17:07 katsmeow-afk isn't it great to have an overhead lift?
17:08 anannie katsmeow-afk: ?
17:09 katsmeow-afk hey, you have a baby fridge inside there somewhere
17:09 katsmeow-afk rue lifted the machine off his truck witht he overhead lift he made after i made my bridge crane
17:10 katsmeow-afk careful with the isolation transformer, if it says Sola, look for the capacitor, make sure it isn't leaking, keep it with the transformer
17:14 katsmeow-afk http://eds.dyndns.org/~ircjunk/projects/gantry/
17:15 katsmeow-afk http://designerthinking.com/gantry.html
18:37 Tom_itx rue_mohr you're a sparkie. would you please give these guys a hand?
18:37 Tom_itx http://j-walkblog.com/images2/vietnamcables.jpg
19:11 rue_mohr sudden rainstorm
19:11 rue_mohr arg
19:11 Skwint https://www.facebook.com/photo.php?fbid=106210890996&set=a.106210240996.104171.631000996&type=3&theater
19:11 Skwint dunno if I can link like that - but that is vietnam cables too - I took that one :
19:11 Skwint :p
19:11 rue_mohr katsmeow-afk, yes, there is a circular plate, I think it has a reversing valve for heating/cooling
19:13 rue_mohr Tom_itx, not as bad as some parts of china
19:14 rue_mohr no package :(
19:26 rue_mohr http://hackaday.com/2012/07/13/3d-printing-with-a-delta-robot-that-seems-to-simplify-the-concept/
19:26 rue_mohr ooo I like that one
19:38 rue_mohr so there isn't much electronic to re-use on it
20:35 rue_mohr kat, there is an idea for the books in this one
20:38 The_jester greets to chan
21:11 katsmeow-afk hmm?
21:34 rue_shop os3y4 bearing, COOL
21:34 rue_shop The_jester, hey
21:34 rue_shop biab
21:38 katsmeow-afk on http://hackaday.com/2012/07/13/3d-printing-with-a-delta-robot-that-seems-to-simplify-the-concept/ , how do you keep the vertical rods frombending inwards, and dropping the carriage into the workpiece?
21:40 katsmeow-afk Since the Z rods need to all remain parallel to each other, and can only be clamped at the top and bottom, at some point the flex in the rod is going to become a problem, and you’ll have to go up to heavier rods and bigger bearings (or maybe switch to a three-rod assembly).
21:40 katsmeow-afk For a bigger system it might be interesting to make the Z rods with MakerSlide instead, so they would be quite rigid to begin with, but could also be braced at the midpoints, as the bearings wouldn’t go all the way around .
21:40 katsmeow-afk Or, better, use openbeam with openrail on it.
21:40 katsmeow-afk whatever that is
21:42 ace4016 kats, if the deltabot is done right, it will always remain parallel
21:47 katsmeow-afk no, i guarantee you if you 1) have the arms 1/2 way up and engage in high acceleration, or B) have the arms 1/2 way up and put a brick on the carriage , all the rods will bend inwards
21:47 katsmeow-afk the forces on the rods by the arms is not str8 up-down
21:48 katsmeow-afk best way t make that is with a split linear bearing (you can get them easy) and a trussed set of rods
21:49 katsmeow-afk but otherwise, i rather like it, assuming the belts don't stretch differentially
21:50 ace4016 didn't they just show they didn't have an issue with their design though printing that owl?
21:52 katsmeow-afk •Chris C. says:
21:52 katsmeow-afk July 13, 2012 at 12:07 pm
21:52 katsmeow-afk I noticed there were some visible glitches in the circular movement during the higher speed portions of the demo; but that’s faster than you’d be able to deposit material anyway. It’s certainly very impressive!
21:52 katsmeow-afk •suidae says:
21:52 katsmeow-afk July 13, 2012 at 11:39 am
21:53 katsmeow-afk Since the Z rods need to all remain parallel to each other, and can only be clamped at the top and bottom, at some point the flex in the rod is going to become a problem, and you’ll have to go up to heavier rods and bigger bearings (or maybe switch to a three-rod assembly).
21:53 katsmeow-afk For a bigger system it might be interesting to make the Z rods with MakerSlide instead, so they would be quite rigid to begin with, but could also be braced at the midpoints, as the bearings wouldn’t go all the way around .
21:53 katsmeow-afk so i am not the only one with enough expereince to have noticed that problem
21:54 katsmeow-afk but for what they built, it is indeed impressive
21:54 katsmeow-afk afk to wash conditioner out of my fur
21:54 ace4016 ah, so it wasn't "delta bots can't do this properly" it was a "delta bots built right can do this without a hitch"
21:55 rrywolf flops on katsmeow-afk, exhausted, but remembers to pet her an
21:56 ace4016 petting wet fur isn't as nice feeling
22:11 katsmeow-afk bak
22:12 ace4016 to the future!
22:12 tsmeow-afk keeps refluffing the fur furry flatt
22:12 katsmeow-afk "it" ?
22:13 katsmeow-afk my comment?
22:13 katsmeow-afk without braces on the rods, i wouldn't build it, but with braces, i am going over my steel inventory in my head
22:14 tsmeow-afk ponders a platform hanging from her bridge crane with a 3hp router, or arc welder o
22:15 ace4016 wonder why they went with that delta robot design rather than the rotational one
22:15 ace4016 i don't know the exact configuration names of them all, but I'll call it the classic design :P
22:16 katsmeow-afk these people are morons at packaging : http://blog.openbeamusa.com/ ,, it's as if they never heard of a pneumatic staple gun, or plywood
22:27 furrywolf katsmeow-afk: you can't both want to be pet and complain it fluffs your fur. :(
22:29 katsmeow-afk please re-read what i said
22:30 furrywolf you were unhappy I flattened your fur, and had to keep refluffing it.
22:30 katsmeow-afk yeas
22:30 furrywolf before you expressed unhappyness no one pets you.
22:30 furrywolf you can't complain no one pets you then complain when people pet you. :(
22:31 katsmeow-afk i wasn't complaining about anything at that time, but i could now if you like
22:31 katsmeow-afk i thought i was being funny stringing words togther that started with 'f'
22:32 tsmeow-afk looks at the floor, realizing how stupid she is a
22:33 furrywolf http://fw.bushytails.net/gvnife/SAM_3991.JPG http://fw.bushytails.net/gvnife/SAM_3992.JPG http://fw.bushytails.net/gvnife/SAM_3993.JPG
22:33 furrywolf should I buy them?
22:33 katsmeow-afk how would i know? :-(
22:48 furrywolf why the fuck didn't the openbeam people make the center round? having the extra slot in it probably costs half the strength of the material.
22:49 furrywolf if the center were round, it would be strong. with the slot going all the way down, that side will bend wide, especially if you try pulling a nut in it.
22:49 katsmeow-afk and it can twist around a lengthwise axis
22:49 ace4016 why didn't they just go with a rectangular box instead? for coolness?
22:50 furrywolf so you can slide bolt heads and nuts into it.
22:50 furrywolf http://www.openbeamusa.com/images/products/229.jpg the center of that should be round.... see how it has a gap in the core, on the bottom side in that image? it should NOT be there! that weakens it hugely....
22:52 katsmeow-afk i agree,, they also don't understand a pile of those extrusions in a cardboard tube is like a real battering ram against whatever they close the mailer tube with
22:52 furrywolf it spreads if you pull on a nut/bolt on that side, it buckles if you load the beam, it twists lengthwise, and they list being able to tap the core as a feature, which will be a pain in the neck and break taps with the slot there, not to mention the utter lack of holding power as the tube will just bend outwards and jump the threads.
22:53 katsmeow-afk i agree
22:53 katsmeow-afk somehow, they made money?
22:54 furrywolf it uses marginally less aluminum, but not enough I expect it to be an issue.
22:54 furrywolf it gives you one side you can put longer bolts into, but a drill as needed would be better.
22:57 furrywolf I bet it's a limitation of the extrusion machine they used
22:57 furrywolf it's extruding through a flat plate, rather than a much more complicated nozzle, and can't make discontinuous voids.
22:58 katsmeow-afk shouldn't be that hard to hang a pin over the center hole to get a sealed void
22:58 furrywolf and yet, I bet that's why it's made like that.
23:10 katsmeow-afk so, someone has gone an invented The Turk, and no one and their terminator was around to stop it this time : http://www.extremetech.com/extreme/132558-a-computer-that-learns-the-rules-of-a-game-by-watching-you-play
23:16 rue_mohr jester fell again
23:16 ace4016 o.0
23:16 rue_mohr I'm gonna go run him a wire for his freaking internet
23:22 katsmeow-afk i read an interesting tidbit today, the sleeping pills containing benadryl or doxywhatever can set up your body to be in slowmo well after thos drugs are out of your system
23:23 katsmeow-afk it got me thinking, perhaps antiinnflamatories do the same thing
23:25 katsmeow-afk the sleeping pills put a damper on anything related to HGH release in the body, and aintiinflamatories try to reduce stress responces, and some HGH and cortisol and such are a stress responces
23:29 rrywolf knows nothing about d
23:30 ace4016 so what you're saying is that people trying to roid up and take benedryl for allergies are wasting their money? :P
23:31 katsmeow-afk yeas, the benedryl is reducng their natural HGH production over the long term, so they'd need to take more roids, which could be a OD problem eventually
23:32 theBear i need them, i don't think i slept... dementia in close family members is disturbing at best
23:32 katsmeow-afk furry, i read a wide variety of the stuff Tiggr pulls in, so i read that tidbit today <shrug>
23:32 furrywolf http://farm8.staticflickr.com/7232/7214507982_0166901e38_b.jpg yep, flat plate.
23:33 katsmeow-afk bear, i am going to try *only* valerian for a week and see what happens
23:33 furrywolf http://farm6.staticflickr.com/5235/7214507048_0894700d21_b.jpg straightness not gauranteed.
23:34 katsmeow-afk i been so dead flat zero wornout for over a year, i haveto do some experimenting
23:34 katsmeow-afk maybe mistletoe too, i can get some elsewhere, and if i had a treeclimber robot i have some on this property too
23:34 rrywolf still thinks a fluffy wolfy on top of someone is the best way to help people s
23:35 katsmeow-afk ya know if they closed that gap on the flat plate and hung a pin over the center hole, they'd have the problem solved real easy
23:36 furrywolf well, the pin needs to be mounted on a rather hefty structure, and the metal has to flow around that structure and re-join around the pin. it takes a thick die, and more work...
23:36 ace4016 food might also be an issue...though that's a bit tougher to pinpoint >_>
23:37 rue_shop ok two digital pressure sensors with displays
23:38 rue_shop ZSE30-T1-25
23:38 katsmeow-afk food to extrude aluminum?
23:39 rue_shop oh god, I think dk stocks them
23:39 rue_shop the price is "CALL" it must be worth a fortune
23:40 ace4016 that's my motto on pricing
23:40 ace4016 if you have to call, it's too expensive :P
23:40 katsmeow-afk or they will never have it in stock
23:40 rue_shop http://media.digikey.com/pdf/Data%20Sheets/SMC%20Corp%20of%20America/ISE30,%20ZSE30.pdf
23:40 e_shop dr
23:40 rue_shop there are two of these :)
23:40 ace4016 or they'll require you buy a batch instead of a small number of units
23:41 ace4016 i found sonar modules for $200, fairly cheap...except you had to buy like 10-20 units...
23:41 ace4016 when you only need 2-3
23:41 ace4016 i'm shocked there aren't many resellers
23:41 katsmeow-afk what if you mandate a minimum of 4096 robots must be built in any one room, and give each one a pixel sensor, and they all form a Connection Machine to see?
23:42 katsmeow-afk 4096 avrs at 20Mhz = 81gigahz
23:42 katsmeow-afk be some kinda smarts in a under-$10 robot
23:42 rue_shop npn output
23:43 rue_shop on/off
23:43 rue_shop power in is 12 to 24V
23:43 rue_shop ok
23:43 rue_shop hha asays right on it
23:44 katsmeow-afk The former director of MIT’s Computer Science and Artificial Intelligence Laboratory ...... was turned down for graduate school at MIT, and turned down again — twice — for faculty positions after earning his doctorate at Stanford University.In 1994, on his third try, Brooks finally did get an MIT faculty appointment
23:45 katsmeow-afk Brooks’ first major contribution to the field came from an insight based on nature: the idea of building swarms of tiny, inexpensive robots with autonomous control systems.
23:45 katsmeow-afk The concept of smaller, simpler robots did ultimately have an impact on NASA, and led to Brooks’ work on the first mobile robotic device ever to land on another planet: a Mars rover called Sojourner.
23:46 rue_shop its out by -0.2kpa
23:46 katsmeow-afk Working with MIT students and postdocs, Brooks developed a variety of robots that could watch people’s facial expressions and gestures and make inferences about their meaning and emotional state ,
23:46 katsmeow-afk but this has prooven to be less than useful on Mars.
23:46 rue_shop set button isn't working
23:47 furrywolf that extrusion machine ( http://farm6.staticflickr.com/5235/7214507048_0894700d21_b.jpg ) just screams "heavy" to me. heh.
23:47 katsmeow-afk http://heartlandrobotics.com/
23:48 furrywolf and old. look how many times people have missed the die bolts with a big sledgehammer. :)
23:56 rue_shop so that was a nice score today
23:57 rue_shop I have it back on the gantry ready to go back in the truck to the scrapper
23:58 katsmeow-afk you aren't going to remove the good bits?!?
23:58 rue_shop done
23:58 katsmeow-afk even the bulk aluminum, you can melt that down yourself now, yanno