| --- Day changed Fri May 28 2010 | ||
| fenn | btw i'd like to point out that you _could_ have a t-rex if you finished the mechmate | 00:00 |
|---|---|---|
| splicer | (an at-st maybe) | 00:00 |
| splicer | 3d is nice... so there is something to be said for goggles with motion sensors, they shouldn't be that far off... and there just has to be a market for them. | 00:01 |
| fenn | you can already buy them | 00:02 |
| fenn | vr920's aren't goggles exactly but it's the right idea | 00:02 |
| splicer | nice | 00:03 |
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| fenn | hmm.. http://www.masturbate-a-thon.com/home.html | 01:25 |
| fenn | SF is funny | 01:26 |
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| fenn | "Not Sure you want to be part of the live event? | 01:29 |
| fenn | You can join us by masturbating from home! Click here to find out how." | 01:29 |
| fenn | how do i shot web :\ | 01:29 |
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| fenn | learn something new every day | 01:54 |
| fenn | " Dermestid beetles can be obtained from biological supply houses, local natural history museums or university zoology departments. Once a colony is set up in a warm place, they require minimal maintenance and are capable of stripping entire skulls in a day or two." | 01:54 |
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| splicer | ...but how do I get rid of the bones? | 04:15 |
| * splicer just remembered that bryan logs everything | 04:19 | |
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| JayDugger | Good morning, everyone. | 06:29 |
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| kanzure | bad infection: http://www.dol.govt.nz/News/Media/2008/adu-bobie-report.asp | 09:12 |
| kanzure | A Long-Term Follow-Up of Autologous Mesenchymal Stem Cell Transplantation in Patients with Ischemic Stroke http://bit.ly/cdyKn7 | 09:26 |
| kanzure | does anyone know of a good source of "animal cams"? for instance, a collection of "where the hell my cat goes" | 09:53 |
| kanzure | or "where my front yard toads go during the day" | 09:53 |
| kanzure | Utopiah: do you have a script that will download an rss feed on a periodic schedule? | 10:02 |
| Utopiah | yes | 10:05 |
| Utopiah | well no actually I download my OPML file describing what RSS feeds I follow daily | 10:05 |
| Utopiah | but anyway an RSS feed you can just use wget for that | 10:06 |
| Utopiah | crontab -e then add your wget line with its option (for renaming mainly) | 10:06 |
| Utopiah | (the daily OMPL allows me to diff) | 10:07 |
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| TCrown | hola! | 10:20 |
| TCrown | so who was it I chatted with about diybio over the weekend at MF? | 10:20 |
| TCrown | this is Eric from Chicago | 10:21 |
| Utopiah | http://fora.tv/2010/05/23/BioCurious_The_Bay_Area_Biology_Collaborative_Lab_Space | 12:08 |
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| fenn | quantified kitty | 13:41 |
| fenn | mostly german stuff but the cat doesn't speak english anyway http://www.mr-lee-catcam.de/pe_cc_u.htm | 13:43 |
| fenn | i'm sure we can do better wrt the hardware | 13:44 |
| fenn | http://www.newscientist.com/article/dn18967-eat-bacteria-to-boost-brain-power.html | 13:54 |
| fenn | next we will be discussing the miraculous properties of snake oil | 13:57 |
| genehacker | Well snake venom derivatives have had some use in developing anticoagulants for heart attacks and what not | 13:59 |
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| jrayhawk | Kanzure: Usually rss2email is the best approach, assuming you have a multiple-folder email client. | 14:49 |
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| kanzure | mission accomplished | 15:15 |
| kanzure | http://designfiles.org/~bryan/photos/2010-05-28_puma500.jpg | 15:15 |
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| kanzure | genehacker: just picked this up: http://designfiles.org/~bryan/photos/2010-05-28_puma500.jpg | 15:15 |
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| kanzure | http://designfiles.org/~bryan/photos/2010-05-28_154006_puma500.jpg | 15:22 |
| dustbin | what are the plans for htat | 15:24 |
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| kanzure | world domination | 15:29 |
| kanzure | nothing yet | 15:29 |
| dustbin | heh ok | 15:30 |
| dustbin | does it have replaceable hand attachments? | 15:30 |
| dustbin | like could we stick a mill end on it and use it as a 4 axis cnc or something? | 15:30 |
| kanzure | i don't have any extra end effectors yet | 15:32 |
| kanzure | but yeah it's replaceable | 15:32 |
| kanzure | it's 6DOF btw | 15:32 |
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| genehacker | nifty | 15:41 |
| genehacker | we could make a mr.stabby like NYC resistor did | 15:41 |
| genehacker | or we could do something more useful with it | 15:42 |
| genehacker | where'd you get it? | 15:42 |
| genehacker | and will you be there on sunday? | 15:42 |
| genehacker | I might be able to visit on sunday | 15:42 |
| genehacker | and the most important question of all, can we control it? | 15:44 |
| fenn | everything's bigger in texas, even the boat anchors | 15:56 |
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| genehacker | well there are no real lakes in texas so we have to use a special type of anchor... | 16:08 |
| kanzure | genehacker: i can pick you up on sunday if necessary | 16:08 |
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| genehacker | that may not be necessary | 16:08 |
| genehacker | I might have a car by then | 16:08 |
| kanzure | hey, at the very least i just got myself a fucking awesome lamp | 16:08 |
| genehacker | so can you control it? | 16:08 |
| kanzure | nah not yet | 16:08 |
| kanzure | it has individual pinouts for each servo | 16:09 |
| genehacker | and it has encoders on the joints? | 16:09 |
| kanzure | didn't check | 16:09 |
| genehacker | the robotics trailer has a HUGE 4 axis stepper/servo driver that will drive servos however you want them if you can hook up encoders too | 16:10 |
| genehacker | also it's possible to control the stepper driver directly from parallel port | 16:11 |
| genehacker | got any specs on the servos it uses? | 16:11 |
| genehacker | from parallel port with EMC2 | 16:11 |
| kanzure | not yet.. the model is Unimate PUMA500 Robot Arm JR3 67M25A-U560 | 16:11 |
| kanzure | yeah i was planning on forcing fenn to fennticate his knowledge of emc2 (or, i guess i'll just read the emc2 manual) | 16:11 |
| genehacker | http://www.listown.com/sporting/ast/200911/121198.htm | 16:12 |
| genehacker | SPORTING GOODS? | 16:12 |
| genehacker | WTF | 16:12 |
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| kanzure | what sporting goods? | 16:12 |
| genehacker | who in the right mind puts a robot in SPORTING GOODS | 16:12 |
| genehacker | I found your robot it's been for sale | 16:13 |
| kanzure | yep | 16:13 |
| kanzure | it's been all over ebay and craigslist | 16:13 |
| kanzure | http://cgi.ebay.com/Unimate-PUMA500-Robot-Arm-JR3-67M25A-U560-hand-/290373583741?cmd=ViewItem&pt=LH_DefaultDomain_0&hash=item439b9d437d | 16:13 |
| genehacker | it was classified in sporting goods | 16:13 |
| genehacker | I wonder if it was used to test out golf clubs... | 16:13 |
| kanzure | heh repeatedly bashing golf clubs against a car? | 16:14 |
| kanzure | "yep" | 16:14 |
| kanzure | reminds me of: http://www.joeydevilla.com/wordpress/wp-content/uploads/2007/11/pug_factory.jpg | 16:15 |
| genehacker | heh | 16:15 |
| genehacker | you don't have the arm trainer do you? | 16:15 |
| kanzure | trainer? what? | 16:15 |
| kanzure | so anyway, the guys i bought this from have a ridiculously large inventory of biotech equipment | 16:16 |
| kanzure | one of them used to be a molecular biology student at utexas.edu | 16:16 |
| genehacker | a trainer is a little handheld keypad thing you use to "program" the arm | 16:16 |
| kanzure | sounds stupid | 16:17 |
| genehacker | this is a primitive robot, it performs repetitive tasks with no feedback | 16:18 |
| genehacker | or very little at the least | 16:18 |
| kanzure | it's not really a "robot" | 16:18 |
| genehacker | http://www.retrothing.com/2008/10/unimate-puma-50.html | 16:19 |
| kanzure | these are the guys i bought it from: http://www.assetrenew.com/ | 16:19 |
| kanzure | all of their prices are negotiable | 16:19 |
| genehacker | will they buy stuff? | 16:19 |
| kanzure | expensive shaker: http://www.assetrenew.com/comments.php?y=10&m=05&entry=entry100528-171030 | 16:20 |
| kanzure | dunno.. they seem to just hang out at liquidation auctions | 16:20 |
| kanzure | local delivery available ha ha | 16:20 |
| kanzure | so i was thinking i'd just have them forward thermocyclers that they get | 16:20 |
| kanzure | and i'd throw on an arduino or some avr | 16:20 |
| genehacker | http://www.prsrobots.com/puma500.html | 16:21 |
| genehacker | WOOO SPEC SHEETS! | 16:21 |
| kanzure | 5lbs max load btw | 16:21 |
| genehacker | disregard that, these spec sheets suck | 16:22 |
| kanzure | "For a hard copy of this page, click the print button on your web browser" | 16:23 |
| genehacker | oh found a better spec sheet | 16:25 |
| genehacker | apparently you don't have the controller | 16:25 |
| genehacker | but that's probably OK | 16:25 |
| genehacker | this robot is really old | 16:25 |
| genehacker | 1980s ish | 16:25 |
| genehacker | www.antenen.com/htdocs/downloads/files/download.php?id=6 | 16:26 |
| genehacker | so by using a better ADC you might be able to make it more accurate than it's supposed to be | 16:27 |
| kanzure | hm overhead mounting | 16:28 |
| genehacker | yeah | 16:29 |
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| genehacker | as in we could make it into a robotic gantry crane | 16:29 |
| genehacker | http://www.computer.org/portal/web/csdl/doi/10.1109/MMVIP.1997.625229 | 16:31 |
| genehacker | http://www.springerlink.com/content/d16j47613110g73j/ | 16:32 |
| genehacker | much more recent | 16:32 |
| genehacker | we don't need a 1980s controller to control it | 16:32 |
| kanzure | http://designfiles.org/papers/Implementation%20of%20a%20new%20PC%20based%20controller%20for%20a%20PUMA%20robot.pdf | 16:36 |
| genehacker | excellent | 16:36 |
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| genehacker | 100% complete protection from ebola using RNAi: http://www.npr.org/templates/story/story.php?storyId=127226355 | 16:37 |
| genehacker | in n=4 samples | 16:37 |
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| kanzure | maybe i should make the arm high-five me | 16:47 |
| fenn | i would suggest not getting anywhere near the thing while turned on | 16:48 |
| kanzure | right | 16:48 |
| kanzure | yeah i think standard procedure is to have a perimeter outlined on the ground | 16:48 |
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| genehacker | I'd suggest a robot cage | 16:49 |
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| fenn | wtf, "unimate jr3" only gets results for this particular arm in austin | 16:49 |
| genehacker | that's a serial number I think | 16:50 |
| kanzure | i bet a lot of this equipment is pre-internet to the point that the original manufacturers went out of business and never put stuff up online | 16:51 |
| genehacker | http://www.cs.cmu.edu/~deadslug/puma.html | 16:53 |
| fenn | yeah supposedly there are manuals online that people have scanned in, it's all bitrotted links though | 16:53 |
| fenn | oh there you go | 16:53 |
| genehacker | "This page contains useful information (manuals, diagrams, and other links) for people interested in retrofitting Unimation PUMA robots or writing low-level software." | 16:54 |
| genehacker | odd there's no word of what happened to unimation, the first industrial robot manufacturing company | 16:54 |
| fenn | so now "all you have to do" is reverse engineer all that stuff | 16:54 |
| fenn | SMOEDBP | 16:55 |
| kanzure | oh boy oh boy | 16:55 |
| fenn | simple matter of engineering designing building and programming | 16:55 |
| kanzure | so in other words.. just starting from scratch | 16:55 |
| genehacker | well not really from scratch | 16:55 |
| kanzure | sometimes it's better to throw away shit that other people fucked up | 16:55 |
| fenn | what is tha actual model number? is it a 560? | 16:56 |
| kanzure | 500 | 16:56 |
| fenn | you sure about that? not "500 series"? | 16:57 |
| kanzure | i'm not presently near it to double check of course | 16:57 |
| fenn | pics or it didnt happen' | 16:57 |
| kanzure | ebay auction says 560 | 16:57 |
| kanzure | http://cgi.ebay.com/Unimate-PUMA500-Robot-Arm-JR3-67M25A-U560-hand-/290373583741?cmd=ViewItem&pt=LH_DefaultDomain_0&hash=item439b9d437d | 16:57 |
| fenn | never trust ebay | 16:57 |
| kanzure | pics: http://designfiles.org/~bryan/photos/2010-05-28_puma500.jpg | 16:57 |
| kanzure | http://designfiles.org/~bryan/photos/2010-05-28_154006_puma500.jpg | 16:57 |
| genehacker | I'd say it's a simple matter of figuring out which connectors on it go to which motors and how to drive em | 16:57 |
| genehacker | oh and the pots too | 16:57 |
| kanzure | here's the craigslist posting | 16:58 |
| kanzure | http://austin.craigslist.org/sys/1737794799.html | 16:58 |
| kanzure | it says both U560 and PUMA500 | 16:58 |
| genehacker | ok then there's a retrofit guide available | 16:58 |
| fenn | jr3 is the gripper model number | 16:58 |
| kanzure | aren't the end effectors supposed to be interchangeable? | 16:59 |
| fenn | i doubt you'll find the right wiring connectors , will have to chop them off and wire to terminal blocks probably | 16:59 |
| kanzure | on the ebay auction page there's a close-up of the connector | 16:59 |
| fenn | yeah | 16:59 |
| kanzure | it looks a raw pin-out to the servos | 16:59 |
| fenn | connectors usually cost more than what you pay for the machine | 16:59 |
| kanzure | so, we've confirmed 2.5DOF so far | 17:00 |
| kanzure | but i can't get the first arm link to move at all | 17:00 |
| kanzure | or for the base to rotate | 17:01 |
| genehacker | by forcing it to turn? | 17:01 |
| genehacker | I wouldn't do that.... | 17:01 |
| kanzure | i think there's a locking mechanism that goes away when the pneumatic hookup is in place? | 17:01 |
| genehacker | maybe | 17:01 |
| genehacker | I doubt it | 17:01 |
| genehacker | don't push the arm | 17:01 |
| genehacker | you might mess up the gearing | 17:02 |
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| fenn | usually the brake is electric | 17:03 |
| genehacker | so it has a brake then? | 17:03 |
| fenn | photos of puma brake: http://theatronics.com/Servo_Repair_Photos.php | 17:04 |
| genehacker | so if it's a puma 560 there's a lot of documentation available | 17:04 |
| fenn | don't wrap coils in teflon, use kapton | 17:05 |
| fenn | teflon degrades to fluorine gas | 17:05 |
| fenn | or HF gas or something | 17:05 |
| genehacker | http://juve.ro/blog/puma | 17:06 |
| genehacker | I don't think we have to worry about HF gas fenn | 17:06 |
| genehacker | or do we? | 17:06 |
| fenn | i know that guy.. he's on freenode as alex_joni | 17:07 |
| kanzure | juve.ro? | 17:08 |
| fenn | yeah | 17:08 |
| genehacker | really? | 17:08 |
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| genehacker | then it's time to ask him about our puma | 17:08 |
| fenn | he does welding robot servicing and installation for his dad's company | 17:09 |
| fenn | looks like he went to bed 4 hours ago | 17:09 |
| kanzure | such is irc | 17:10 |
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| kanzure | hi lepton_ | 17:10 |
| fenn | you could just start blabbering in emc and somebody will probably blabber back | 17:10 |
| kanzure | lepton_: i bought myself a fancy lamp stand today: http://designfiles.org/~bryan/photos/2010-05-28_puma500.jpg | 17:11 |
| kanzure | other pics: http://designfiles.org/~bryan/photos/puma560/ | 17:17 |
| lepton_ | ha! hello | 17:17 |
| lepton_ | fenn: Yeah, if you were to blabber about EMC that would probably incite a response from me | 17:18 |
| lepton_ | Plans for the arms? | 17:18 |
| lepton_ | nevermind, reading the logs now | 17:18 |
| kanzure | heh someone in #startups thought i paid $200k for it | 17:19 |
| genehacker | so if we mount it from the ceiling we might be able to make it into a waldo | 17:20 |
| lepton_ | Damn, I look away for 3 mineuts and the CNC finishing the toolpath I wanted to watch | 17:20 |
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| lepton_ | looks like it went well, at least | 17:21 |
| lepton_ | genehacker: Did you just reference Waldo, as in the old piece of fiction? | 17:21 |
| genehacker | yeah sort of | 17:21 |
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| lepton_ | awesome | 17:22 |
| genehacker | any robot you control with a strap in arm set up I consider a waldo | 17:22 |
| lepton_ | sure! I'm just not used to people being aware of that story/term | 17:22 |
| genehacker | I might be able to obtain a waldo suit that can be used to control the robot if we get it working and mounted upside down | 17:23 |
| genehacker | there was a robot arm knot tying competition here a while back and some one made one | 17:23 |
| lepton_ | Honestly, sounds like a pretty do-able project just with an Arduino and a CNC | 17:24 |
| lepton_ | or maybe a LeafLabs Maple, since I just got that and I'm excited to do Arduino things on an STM32 | 17:24 |
| fenn | i think eric hunting is the real life version of waldo | 17:24 |
| kanzure | "where is eric hunting" just doesn't have the same ring to it | 17:24 |
| kanzure | because the answer is always "in the fucking desert" | 17:24 |
| fenn | just wait until the movie comes out | 17:24 |
| genehacker | I wouldn't say just an arduino, we need some PWM controllers and ADCs | 17:25 |
| lepton_ | kanzure: any interest in talking me into coming down to Austin for the June conference? | 17:25 |
| kanzure | sure! | 17:25 |
| kanzure | uhh uhh | 17:25 |
| kanzure | hm | 17:25 |
| lepton_ | ^I do PWM servo control on Arduinos | 17:25 |
| kanzure | how about, i'm paying? | 17:25 |
| lepton_ | But yeah, better hardware is always good | 17:25 |
| lepton_ | ahhh | 17:25 |
| lepton_ | yeah? | 17:25 |
| kanzure | it's possible | 17:26 |
| genehacker | as in beefier PWM servo controllers | 17:26 |
| genehacker | this thing's pretty big | 17:26 |
| fenn | i dont think you should use an arduino to control this | 17:26 |
| * kanzure agrees | 17:26 | |
| fenn | plan on spending ~500 for control electronics | 17:26 |
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| fenn | get a mesa m5i20 and whatever amps they sell | 17:26 |
| kanzure | dave (or davyn or whatever?) suggested a few thousand | 17:26 |
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| fenn | oh right, six axis so at least $1k | 17:27 |
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| * kanzure tries to get davyn in here | 17:27 | |
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| kanzure | hey klafka | 17:27 |
| kanzure | see pm | 17:28 |
| genehacker | lepton are you in austin | 17:28 |
| lepton_ | Boulder, Colorado | 17:29 |
| genehacker | ok | 17:29 |
| lepton_ | Sounds like I might be in Austin in June, though | 17:29 |
| genehacker | I'll be in a place called Thermofluid systems then | 17:30 |
| lepton_ | Looks like I'll have more time available that week than I had anticipated (though my girlfriend will not be pleased if I skip town that weekend) | 17:30 |
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| kanzure | yay hi quantumkat | 17:31 |
| kanzure | but i was trying to get dave in here | 17:31 |
| quantumkat | Heya | 17:31 |
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| kanzure | right, so, adopt a lab rat needs a logo | 17:33 |
| kanzure | hi elevenarms | 17:33 |
| elevenarms | hello all | 17:33 |
| kanzure | fenn: did you and dave talk yet about hextatic stuff and parts | 17:33 |
| genehacker | adopt a lab rat? | 17:33 |
| kanzure | genehacker: yeah, they deserve our loving too | 17:33 |
| fenn | kanzure no | 17:33 |
| fenn | i forgot | 17:33 |
| * fenn adds to todo lol | 17:33 | |
| elevenarms | re: the puma 500 | 17:34 |
| elevenarms | https://docs.google.com/fileview?id=0B1ZODSrj5_bmN2YyNzVlMDgtYWIzOS00M2M4LWE3NWQtZDBhMjQ4MDlmMGYy&hl=en | 17:34 |
| elevenarms | is an article of interest | 17:34 |
| fenn | oh hi dave | 17:34 |
| elevenarms | hi fenn | 17:34 |
| genehacker | yeah found that earlier | 17:34 |
| elevenarms | not the approach i would have taken... but a good starting point | 17:35 |
| fenn | i'm always skeptical of academic papers explaining how to do some project | 17:35 |
| genehacker | chinese paper go figure | 17:35 |
| fenn | total cost $4k | 17:36 |
| kanzure | Lab Rat Adoption Taskforce (LRAT) | 17:36 |
| fenn | seriously just use a mesa card | 17:36 |
| fenn | and emc | 17:36 |
| kanzure | btw do you mean mesa like mesa gl? | 17:37 |
| elevenarms | which mesa fenn? | 17:37 |
| fenn | no | 17:37 |
| elevenarms | is there an 8 channel one? | 17:37 |
| fenn | 5i20 on here http://www.mesanet.com/fpgacardinfo.html | 17:38 |
| fenn | 5i22 has slightly more io | 17:38 |
| fenn | both are supported with emc | 17:39 |
| fenn | there are also plug-in amp boards | 17:39 |
| elevenarms | the 3C20 | 17:39 |
| elevenarms | ? | 17:39 |
| fenn | http://www.mesanet.com/motioncardinfo.html | 17:40 |
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| fenn | not sure how big this robot is.. but 7i30 or 8i20 are probably what you want | 17:41 |
| fenn | the 50 pin ribbon cable just plugs in | 17:41 |
| fenn | anything on that page with a 50 pin IDC | 17:42 |
| elevenarms | the puma spec sheet lists the power req @ 1500w total | 17:43 |
| fenn | is the puma brushed or brushless? | 17:43 |
| elevenarms | brushed | 17:43 |
| fenn | ok good | 17:43 |
| fenn | so one 7i30 and one 7i40 would probably do what you want | 17:44 |
| fenn | HostMot is their emc driver | 17:45 |
| elevenarms | noted | 17:45 |
| fenn | should also get a 7i37 for misc crap like the gripper and fans and stuff | 17:47 |
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| fenn | 7i37T | 17:47 |
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| fenn | so what are we up to now... 5i20 - $199, 7i30-4 - $89, 7i40 - $150, 7i37T - $79 = $517 for control cards | 17:50 |
| kanzure | that doesn't sound terrible | 17:50 |
| elevenarms | nb indeed i guessed 1-2k | 17:51 |
| fenn | add a big honkin PSU and lots of wires and buttons and connectors and a pc and a box | 17:51 |
| fenn | i'd suggest a couple antec toroid transformers from ebay | 17:51 |
| kanzure | elevenarms: what about the mechanical work that you guestimated? | 17:51 |
| kanzure | i was meaning to sit down and write it all down | 17:51 |
| elevenarms | i'm worried about the servo brake | 17:52 |
| elevenarms | the rebuild walkthrough you posted should give us some idea of what's involved | 17:52 |
| fenn | for psu something like this: http://cgi.ebay.com/35-35V-600VA-Toroidal-Transformer-CNC-Controller-HiFi-/370294124931?cmd=ViewItem&pt=LH_DefaultDomain_0&hash=item56373ff183 | 17:53 |
| fenn | except twice as big, maybe two in parallel or series would work | 17:53 |
| fenn | and you will probably want a soft-start circuit so it doesnt blow the breaker every time you turn it on | 17:53 |
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| kanzure | oh no | 17:54 |
| fenn | servo brake is just 6 io lines | 17:54 |
| elevenarms | i'm hoping the arm doesn't need a complete rebuild | 17:55 |
| fenn | oh nice http://cgi.ebay.com/78V-600W-CNC-Mill-Router-Power-Supply-Servo-Motor-6N78F-/370388214549?cmd=ViewItem&pt=LH_DefaultDomain_0&hash=item563cdba315 | 17:55 |
| fenn | yeah this is assuming it works at all | 17:55 |
| kanzure | fenn: btw, this is his bridgeport http://designfiles.org/~bryan/photos/puma560/2010-05-28%2015.57.43_Austin_Texas_US.jpg | 17:55 |
| kanzure | sorry for the bad quality | 17:55 |
| fenn | did you ever get your camera working? | 17:55 |
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| kanzure | i like the random bike parts all over the place | 17:55 |
| kanzure | no, this is a "smart" phone | 17:55 |
| elevenarms | if were ordering all this mesa hardware... it might be time for me to do a retrofit on the bport | 17:56 |
| fenn | i forget, is that steppers or servos? | 17:57 |
| elevenarms | dc servos | 17:57 |
| fenn | if samco is around in #emc, i think he did a puma retrofit with emc a couple years ago | 17:57 |
| elevenarms | I got it working with the centroid control... but promptly crashed the z axis | 17:58 |
| elevenarms | (bad encoders) | 17:59 |
| fenn | 2008 "Ours is a puma mark II 500 series" | 17:59 |
| fenn | oops | 17:59 |
| fenn | hope you were running it at low voltage | 17:59 |
| elevenarms | eh... full power | 18:00 |
| fenn | bad wiring? | 18:00 |
| fenn | i hate the whole control box concept | 18:00 |
| fenn | sending high speed fragile signals down a long wire near huge whirring magnetic fields is just a bad idea | 18:01 |
| elevenarms | indeed | 18:01 |
| fenn | should have a little chip sitting right on the encoder counting, then talk to it with a robust communications protocol | 18:01 |
| fenn | checksums etc | 18:02 |
| elevenarms | i forget who makes them... but that exists - "smartmotors" they call them | 18:02 |
| fenn | you could even use ethernet.. etherCAT is sort of designed like that | 18:02 |
| fenn | there's a lot of proprietary crap out there | 18:02 |
| fenn | ethercat is just barely open enough that i'd consider using it | 18:02 |
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| elevenarms | fyi - http://www.animatics.com/ | 18:02 |
| fenn | meh | 18:03 |
| fenn | any fool can make a smart motor module, even i did it: http://fennetic.net/machines/iskewb | 18:03 |
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| fenn | http://fennetic.net/machines/motherchip | 18:04 |
| elevenarms | seen it... i think i have your boards for those | 18:04 |
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| fenn | i didnt make any boards yet, i think just a partial schematic and components | 18:04 |
| elevenarms | there are some diy-etch boards in the box not sure what they are | 18:05 |
| fenn | kicad files: http://fennetic.net/irc/iskewb.tgz | 18:05 |
| elevenarms | awesome. | 18:06 |
| fenn | it's just the h-bridge i think | 18:07 |
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| elevenarms | fenn: i gotta run... i'll catch up via email... | 18:10 |
| fenn | were these the boards? http://fennetic.net/irc/usbspi_v1.1f.jpg | 18:10 |
| fenn | those are avr programmers | 18:10 |
| fenn | ciao | 18:10 |
| elevenarms | adios | 18:10 |
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| kanzure | cool | 18:11 |
| kanzure | who is eric michaud? | 18:13 |
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| fenn | president of pumping station one | 18:23 |
| kanzure | on a long phone call with him | 18:28 |
| kanzure | he wants to do an open source sub micron double sided pcb automation setup | 18:28 |
| kanzure | and a $100k prize for this | 18:29 |
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| kanzure | well that was an odd call | 18:36 |
| kanzure | hm he worked at anl.gov | 18:36 |
| genehacker | LANL? | 18:36 |
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| kanzure | yeah | 18:36 |
| genehacker | sub micro pic and place? | 18:37 |
| genehacker | is that for electronics assembly or something more exotic? | 18:38 |
| kanzure | pcb board stuff | 18:38 |
| genehacker | why submicron? | 18:39 |
| kanzure | for some reason i didn't take notes | 18:39 |
| kanzure | usually i type out full transcripts of what the other person is saying | 18:39 |
| kanzure | i guess i'm a little tired today | 18:39 |
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| fenn | sub micron for what? | 19:10 |
| fenn | that's 0.00004 inches | 19:11 |
| fenn | typical pcb services are +-0.004 | 19:13 |
| fenn | sth like that | 19:13 |
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| kanzure | < pfred1> well steppers are like motors made in the land of the backwards | 19:18 |
| kanzure | fenn: so i think i have some liquidator suppliers now | 19:22 |
| kanzure | here in austin.. they hoard random lab equipment and industrial equipment | 19:22 |
| kanzure | so i was thinking of just giving them the fablab inventory list | 19:22 |
| kanzure | they also seem to have a good supply of thermocyclers.. so maybe an avr+http server kit would be doable in tandem with them | 19:23 |
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| fenn | sure, if you have a lot of a common thermocycler model | 19:37 |
| fenn | one-off hacks dont scale well | 19:37 |
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| kanzure | hi elevenarms | 19:47 |
| elevenarms | hola | 19:48 |
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| kanzure | elevenarms: how goes the trail of lights app | 20:00 |
| elevenarms | good... i'm say.io'ing at the moment | 20:01 |
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| kanzure | http://www.robomo.com/member_pages/jerry/PUMA/ | 21:33 |
| kanzure | hah he has the same model | 21:33 |
| kanzure | and got a better deal ($75) | 21:37 |
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| fenn | hay can you launch a cruise missile strike on UFCU for me? kthnx | 21:44 |
| kanzure | is that a credit union? | 21:44 |
| fenn | yeah, in austin | 21:44 |
| kanzure | what's up? | 21:44 |
| fenn | somehow i've racked up $500 of overdraft charges and they didnt find it important to mention anything to me or deny the charge | 21:45 |
| kanzure | lovely | 21:45 |
| fenn | so each caltrain ticket incurred a $40 fee | 21:45 |
| fenn | no email, no phone notification, even though they had my info | 21:45 |
| dustbin | wow fenn never had a problem with them like that | 21:47 |
| dustbin | have you talked to a rep yet? | 21:48 |
| kanzure | it kind of scares me that there's 64,000 rails apps running: http://heroku.com/ | 21:50 |
| kanzure | just on that site | 21:50 |
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| flamt_ | don't say cruise missile | 22:11 |
| flamt_ | remember keith henson. remember cryogenics | 22:11 |
| flamt_ | never forget | 22:11 |
| genehacker | cruise missile | 22:11 |
| genehacker | ? | 22:11 |
| genehacker | oh | 22:11 |
| flamt_ | lol | 22:13 |
| JayDugger | Good morning, everyone. | 22:23 |
| flamt_ | how are you | 22:24 |
| JayDugger | Just now awake. | 22:24 |
| JayDugger | Fenn, I am sorry to hear about your unpleasant surprise. | 22:26 |
| JayDugger | Genehacker, did you go to ISDC? | 22:27 |
| genehacker | isdc? | 22:29 |
| genehacker | no but if I'm lucky I'll go to IGVC | 22:30 |
| JayDugger | Participant or spectator? | 22:34 |
| JayDugger | http://www.igvc.org/ | 22:34 |
| genehacker | participant | 22:35 |
| genehacker | and spectator | 22:36 |
| JayDugger | Good! Go, man, go! | 22:36 |
| genehacker | I have class on the same day | 22:36 |
| flamt_ | jee | 22:37 |
| genehacker | class which might entail a visit to a nuclear reactor | 22:37 |
| JayDugger | Hereabouts? A research reactor, or a power plant? | 22:37 |
| genehacker | research reactor | 22:38 |
| JayDugger | TRIGA? | 22:39 |
| genehacker | no | 22:43 |
| genehacker | http://www.youtube.com/watch?v=mgNwtepP-6M | 22:43 |
| genehacker | this one | 22:43 |
| genehacker | err maybe | 22:43 |
| JayDugger | Yeah, I think that's a TRIGA. | 22:44 |
| JayDugger | Cherenkov radiation is well worth seeing live. | 22:44 |
| JayDugger | YMMV. I'd probably go see the UTA reactor in your place. | 22:45 |
| genehacker | exactly what I hope to see | 22:46 |
| genehacker | and it's a major maybe at this point | 22:46 |
| JayDugger | Spoiled for choice by two excellent options. | 22:47 |
| JayDugger | en.wikipedia.org/wiki/TRIGA | 22:49 |
| JayDugger | http://en.wikipedia.org/wiki/Cherenkov_radiation | 22:50 |
| genehacker | yup the blue glow | 22:50 |
| JayDugger | http://en.wikipedia.org/wiki/File:Cerenkov_Effect.jpg | 22:50 |
| JayDugger | Good detail, crummy color, in that image, but I saw that very reactor when I lived in Portland. | 22:51 |
| genehacker | oh wait, that's a yes | 22:52 |
| JayDugger | Why would an undergraduate liberal arts school have a reactor? "'It's just a neat facility,' he [Reed PA Dept.] said." | 22:53 |
| JayDugger | Best reason of all, IMO. | 22:53 |
| genehacker | a liberal arts school with a nuclear reactor | 22:54 |
| JayDugger | Yup. | 22:54 |
| genehacker | nothing suspicious there | 22:54 |
| JayDugger | Every so often, their administration would have a fit of engineering-school-envy. | 22:54 |
| JayDugger | We have a good Arts & Sciences faculty, prestigious alumni (sort of), and why shouldn't we have an "X"? | 22:55 |
| JayDugger | Their reputation in Portland was, odd... | 22:56 |
| genehacker | now I wonder if Sokal said anything about nuclear reactors in his famous affair | 22:56 |
| genehacker | oh oh I know there | 22:56 |
| genehacker | 's plenty of postmodernistic reasons for them to have a nuclear reactor | 22:56 |
| genehacker | oh they actually have an engineering program | 22:57 |
| JayDugger | Really? | 22:58 |
| JayDugger | That's changed in the last <NEVERMINDHOWLONG> years. | 22:59 |
| JayDugger | Well, they've had it since 1968. | 22:59 |
| JayDugger | Oh, those are joint programs with Caltech, Columbia, and Rensselaer. | 23:00 |
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| JayDugger | I give $0.02 to the OT jar. | 23:01 |
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| flamt_ | i've visited a research reactor | 23:15 |
| flamt_ | well. infiltrated one | 23:15 |
| flamt_ | learning reactor. at a university | 23:15 |
| flamt_ | for study | 23:15 |
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| fenn | how the heck do they remove all the control rods in under 50 ms? | 23:50 |
| fenn | and what keeps the fuel rods from shattering from thermal shock | 23:51 |
| JayDugger | I vaguely remember it's triggered by a mechanism called "SCRAM," which supposedly stands for Stand-by Control Rod Ax Man. | 23:51 |
| JayDugger | Or that might be inserting them... | 23:51 |
| JayDugger | Probably the water bath that contains the core. | 23:52 |
| JayDugger | I probably have the manuals...somewhere... | 23:52 |
| JayDugger | I think you could probably get them from the General Atomics website, though. | 23:52 |
| fenn | let me just dig around in my old vault-tec catalogs for a minute | 23:53 |
| JayDugger | Or whoever bought that division from GA. I think they just make UAVs now-a-days. | 23:54 |
| fenn | general atomics no longer makes reactors? for shame! | 23:54 |
| JayDugger | I don't know that--they just get more ink in the trade press about their UAVs. | 23:54 |
| JayDugger | If they don't, I agree about the shamefulness of wasting such a great name. | 23:55 |
| JayDugger | Of course--atom-powered aircraft have a alt-tech, dieselpunk appeal. | 23:55 |
| fenn | you mean a fucking awesome in any context appeal? | 23:56 |
| fenn | i'm so pissed at this weaksauce world | 23:56 |
| JayDugger | Well, yes...but that's not a terribly popular opinion. | 23:56 |
| fenn | where's my atomic jetpack | 23:56 |
| fenn | i have an appointment on mars this weekend! | 23:56 |
| JayDugger | On the Warehouse 23 shelf, next to your gadolinium energy cell GI tract replacement...you know, the one labeled " (cc) Freitas Bionics Ltd." | 23:57 |
| JayDugger | ;) | 23:57 |
| * fenn pouts and stuffs more dumpstered cookies into his face | 23:57 | |
| fenn | (actually i'm eating brussel sprouts but don't tell anybody) | 23:58 |
| JayDugger | Brussels sprouts have zero appeal. | 23:58 |
| JayDugger | One of two vegetables I hate. | 23:58 |
| fenn | that's because everybody cooks them wrong | 23:59 |
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