| --- Day changed Thu Apr 29 2010 | ||
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| bkero | MIT OpenCourseware | 02:21 |
|---|---|---|
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| kanzure | bkero: ocw.mit.edu doesn't have any neuroscience classes in audio format that are relevant except like this weird "neuroscience of behavior" class. | 05:55 |
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| kanzure | fenn: anselm has posted to diybio in a thread with the subject "Fast-acting transcriptionalregulation by light responsive elements" | 07:02 |
| kanzure | i don't remember if you told asked him to build you a writozyme or not | 07:02 |
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| fenn | yeah i explained the concept to him in a few different contexts | 08:11 |
| fenn | you broke that thread :( | 08:13 |
| fenn | oh, there's something weird with the headers | 08:14 |
| fenn | so i've been lying here not sleeping and thinking about VR rigs.. kinematic/haptic body frames and how to control massive numbers of micro-bladders | 08:23 |
| fenn | i think you would need some kind of fractal bladder structure to get enough travel and also detail | 08:24 |
| fenn | thinking about using lab on chip valve techniques to control them.. flexible layer over a channel with a piezo pushing on it. still requires a lot of piezo actuators though | 08:24 |
| fenn | but at least they can be made in "comb" modules of a hundred or so in a single piece; simplifies wiring by a couple orders of magnitude | 08:25 |
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| fenn | the bladder kinematics is a nightmare | 08:29 |
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| kristianpaul | any news about skdb? | 08:47 |
| kristianpaul | features or something | 08:47 |
| fenn | nobody's done anything with skdb in months | 08:51 |
| fenn | hmm.. "thermo-responsive hydrogel valves" | 08:56 |
| fenn | phase change waxes might be more practical | 09:00 |
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| JayDugger | Gasp! Has skdb died? | 09:05 |
| JayDugger | Time to write a panic tweet, follow it up with half a dozen exquisitely reasoned blog posts for analysis, and post irresistible flame-bait everywhere I can! | 09:08 |
| fenn | thanks for your show of support | 09:09 |
| JayDugger | Just doing my part. :) | 09:10 |
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| fenn | the microactuator array consists of individual phase-change based actuators addressed by localized heating through focused light patterns (address bus), which can be provided by a modified projector or high power laser pointer. A common pressure manifold (data bus) for the entire array is used to generate large deflections of the phase change actuators in the molten phase | 09:23 |
| fenn | or cheapie LCD screen presumably | 09:24 |
| fenn | power input is proportional to actuator size | 09:24 |
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| fenn | iron man 2 eh | 16:15 |
| QuantumG | yeah.. guess I should go see it | 16:16 |
| fenn | "in which our hero iron man actually fights some bad guys" | 16:17 |
| fenn | so i'm thinking about a flexible suit made entirely of hexagonal bubbles which can be inflated with fluid to cause that surface to contract and put force on a limb | 16:20 |
| fenn | it's godawful complex to control though, would have to do some kind of learning algorithm i think | 16:20 |
| fenn | not really for exoskeleton stuff because you're still loading the human bones, more for VR | 16:21 |
| fenn | s/exoskeleton/jumping over buildings/ | 16:21 |
| fenn | inspiration is the eldar armor in wh40k (not like anybody knows wtf i'm talking about) | 16:21 |
| QuantumG | a force feedback suit? | 16:21 |
| fenn | right | 16:25 |
| QuantumG | intending to move you under computer control right? | 16:26 |
| fenn | i made a little diagram showing how the bubble would contract: http://fennetic.net/irc/hex_bubble.svg | 16:26 |
| QuantumG | so is this pneumatic? | 16:27 |
| fenn | i've long thought the focus on position control in robotics was self defeating | 16:28 |
| fenn | for most applications force is what you're after, and as a bonus it's easier to control anyway | 16:28 |
| fenn | probably hydraulic because it has less springinessD[D[D[D[D[D[D[D[D[D[D[D[D[D[D[D[D[D[D[D[D | 16:29 |
| QuantumG | right, but you expect feed lines running from each hexagonal bubble to a pump system somewhere.. | 16:29 |
| fenn | yeah | 16:30 |
| fenn | hence all the rambling about light gated microfluidics | 16:30 |
| kanzure | wtf it's fenn! http://photos3.meetupstatic.com/photos/event/3/c/6/7/highres_14655463.jpeg | 16:30 |
| fenn | stalker | 16:31 |
| kanzure | no i just happen to like kite boarding | 16:31 |
| fenn | uh huh | 16:31 |
| kanzure | some of the austin hackerspace people are going to a rave | 16:32 |
| kanzure | should i tag along? i've never been to a rave | 16:33 |
| kanzure | screw this.. there's a *fee*?? | 16:33 |
| bkero | lol | 16:34 |
| bkero | Go to rave. | 16:34 |
| bkero | Meet a hoochie. | 16:34 |
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| fenn | kanzure: do you like to dance? (yes/no) | 16:35 |
| bkero | kanzure: do you like to dance? ([yes]/no) | 16:36 |
| fenn | why is yes the default choice? | 16:36 |
| bkero | Because if he doesn't respond we assume yes. | 16:37 |
| fenn | kanzure: anyway, i'd suggest going to a rave if only to acquire some subjective experience in MDMA | 16:37 |
| fenn | er, if your friends are into that sort of thing | 16:38 |
| fenn | or you could stay home and listen to tranceport 4, which is on tub *cough internet down cough* | 16:41 |
| fenn | you'd think hacker dojo would have a less sucky internet connection, considering all these people do is software | 16:42 |
| kanzure | software in a vacuum probably just means they are microsoft drones? | 16:43 |
| bkero | Maybe they're torrenting | 16:43 |
| fenn | rate limited to 60KB/s burst 120Kb/s | 16:43 |
| bkero | Or microsoft drones, I like that explanation better. | 16:43 |
| bkero | Why the hell would you rate limit like that? | 16:43 |
| bkero | Can they not figure out how QoS works? | 16:43 |
| fenn | well that's what it seems.. there's no documentation anywhere | 16:44 |
| kanzure | i spent the day at dave rauchwerk's machine shop | 16:44 |
| kanzure | it's across the street from endesign / austin hackerspace | 16:44 |
| kanzure | literally.. | 16:44 |
| kanzure | he has a nice bridgeport | 16:44 |
| kanzure | he wants to start doing diybio kits | 16:45 |
| kanzure | so i had him and dr. treadwell planning things out while i napped (just woke up) | 16:46 |
| fenn | has he got the mill working yet? | 16:47 |
| kanzure | i didn't see it working but yeah i think so | 16:47 |
| fenn | did you know treadwell has the 7th makerbot ever built? | 16:48 |
| kanzure | yes | 16:48 |
| kanzure | :) | 16:48 |
| kanzure | he painted over the number too | 16:49 |
| kanzure | painted or did something else equally silly like that | 16:49 |
| fenn | oh well | 16:49 |
| fenn | in 50 years it'll be junk | 16:49 |
| kanzure | 50? why so many | 16:49 |
| fenn | it already is junk :x | 16:50 |
| fenn | but somewhere in between now and 50 years from now it'll be a "collector's item" | 16:50 |
| fenn | scary huh | 16:50 |
| fenn | math notation suxxors | 16:52 |
| kanzure | notation eh | 16:52 |
| fenn | this crap would be 90% easier in lisp | 16:52 |
| kanzure | are you using latex? | 16:52 |
| fenn | i'm just trying to read it and understand what's going on | 16:53 |
| fenn | there should be some rule like "you have to repeat every equation in prose" or something like that | 16:53 |
| kanzure | or else socrates rises from the grave to beat the fuck out of you | 16:54 |
| fenn | yeah, socrates. the original badass | 16:54 |
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| fenn | bkero: oi you have lots of servers right? can i get shell access to do various small compute-intensive tasks like computing toolpaths? | 17:26 |
| fenn | it's more of a latency thing "crap now i have to wait five minutes to compile" than massive quantities of crunching | 17:27 |
| bkero | fenn: Yea sure | 17:36 |
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| fenn | bkero: ok lemme know the details whenever | 18:15 |
| * kanzure needs to integrate google checkout into a django module | 18:15 | |
| kanzure | any hints? | 18:15 |
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| kanzure | i'd rather not have to reinvent the wheel | 18:16 |
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| fenn | kanzure: satchmo is supposed to do that by default | 18:18 |
| kanzure | yes but i'm doing an auction site | 18:20 |
| kanzure | so the satchmo shopping cart model doesn't really work well (?) | 18:20 |
| fenn | oh, well, i'd read more about it anyway | 18:20 |
| kanzure | i'm surprised there's no django auction app thing | 18:20 |
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| fenn | there's not that many auction sites | 18:21 |
| kanzure | ebay *bought* paypal | 18:21 |
| fenn | yeah they're huge and certainly a monopoly by any reasonable definition | 18:21 |
| kanzure | btw why doesn't anyone ever notice that ebay sucks from a web presence point of view? | 18:21 |
| kanzure | like, their website is all blahblahblah.dll and click here click here | 18:21 |
| fenn | yeah it's horrible | 18:22 |
| kanzure | i guess a bunch of perl cobbled together in 1995 is bound to be terrible | 18:22 |
| * kanzure ducks hoping jrayhawk isn't around | 18:22 | |
| fenn | and it'll never ever get fixed because so much crap software relies on the awful | 18:22 |
| kanzure | (jrayhawk is 90% perl) | 18:22 |
| fenn | perl sucks | 18:22 |
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| fenn | perl reminds me of digging in the scrapyard for pretty baubles | 18:23 |
| kanzure | so uh, i'm venture funded now | 18:23 |
| fenn | gratz, wat for? | 18:24 |
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| kanzure | iphone app http://www.youtube.com/watch?v=RB9wWpD9gj8 | 18:24 |
| fenn | is this what all the lawyering was about? | 18:24 |
| kanzure | sadly no | 18:24 |
| kanzure | i met with the dla piper lawyer re: compensation structure regarding structory, an online 80/20 distributor | 18:25 |
| fenn | i tried to watch that several times but it was too painful :( | 18:25 |
| fenn | isn't renee a "filmmaker"? | 18:25 |
| kanzure | yes | 18:25 |
| kanzure | mtv, yo | 18:25 |
| kanzure | http://rjpinnell.info/ | 18:25 |
| kanzure | anyway, he wants me to work 10 hours day and have at minimum 2 hours devoted to meetings each day during the summer | 18:26 |
| kanzure | this is, of course, bullshit | 18:26 |
| fenn | then why does his promo video suck so much | 18:26 |
| kanzure | it wasn't a promo | 18:26 |
| kanzure | it was for the capital factory peeps | 18:26 |
| kanzure | anyway, i need to show him some local startups or something | 18:27 |
| kanzure | or else i'm off.. no way i'm going to spend my summer in meetings | 18:27 |
| fenn | bacon_factor = 3 | 18:27 |
| kanzure | ? | 18:27 |
| fenn | oh, "tribe level" | 18:27 |
| kanzure | i (don't?) like how they completely cut me from the video | 18:28 |
| kanzure | i filmed and everything | 18:28 |
| fenn | rene reminds me of the boss in office space | 18:29 |
| kanzure | since i'm a founder i should have a say in the matter | 18:29 |
| kanzure | the iphone app works :) | 18:29 |
| fenn | i dont get how you can spend 10 hours a day on an iphone app anyway | 18:29 |
| kanzure | me either | 18:29 |
| kanzure | i guess if your minimum meeting length is 2h | 18:30 |
| kanzure | you might have multiple meetings? | 18:30 |
| fenn | yeah that's absurd | 18:30 |
| fenn | you should have maximum meeting lengths, not minimums! | 18:30 |
| kanzure | 30min once a week and then gtfo of my house | 18:30 |
| fenn | and maximum numbers of scheduled meetings | 18:31 |
| kanzure | fool! we should have multiple simultaneously parallel meeting schedules! | 18:31 |
| kanzure | that way we can get twice the work done!~ | 18:31 |
| fenn | well, parallel meetings are actually better | 18:31 |
| fenn | but there's only 4 people so meh | 18:32 |
| kanzure | yeah, so one of the things i need to be doing is server stress testing | 18:32 |
| kanzure | we're aiming to do stress testing for up to 10k users by the summer's end, with scalable support around that time | 18:32 |
| kanzure | or, rather, that's my aim | 18:32 |
| fenn | give away $100k of stuff if you click a button within the allotted time | 18:33 |
| fenn | hah | 18:34 |
| kanzure | ? | 18:34 |
| fenn | would probably nuke the ISP | 18:34 |
| kanzure | oh it's "in the cloud" | 18:34 |
| fenn | with aftershocks from people in the wrong timezone | 18:34 |
| * fenn continues regressing | 18:36 | |
| kanzure | so uh | 18:36 |
| kanzure | yeah.. sorry about the phone call | 18:36 |
| fenn | ugh | 18:36 |
| kanzure | heh | 18:36 |
| fenn | i should mail you a stinkbomb for that | 18:37 |
| kanzure | what a terrible technology | 18:37 |
| kanzure | actually, mac was thinking of using this for distributed text-message instructions | 18:37 |
| kanzure | for doing various projects in skdb | 18:37 |
| kanzure | but frankly i don't know why anyone would follow the instructions | 18:37 |
| kanzure | "get a pound of flour" | 18:37 |
| kanzure | "get some icing" | 18:37 |
| kanzure | "make a cake" | 18:37 |
| fenn | email is better | 18:38 |
| kanzure | nah the text messages would be sent if you are in the vicinity of, say, a grocery store | 18:38 |
| fenn | if your phone has GPS it can read email | 18:38 |
| kanzure | location-based bullshit | 18:38 |
| kanzure | eh | 18:38 |
| kanzure | yes | 18:38 |
| kanzure | so anyway.. auction site. django stuff. | 18:39 |
| fenn | find the hessian of d(l(theta))/dx = d(sum(y[i]*log(h(x[i]))+(1-y[i])*log(1-h(x[i])), 1, m))/dx | 18:39 |
| kanzure | i don't wanna | 18:40 |
| fenn | i've been doing this problem for 2 weeks :( | 18:40 |
| fenn | :C | 18:40 |
| klafka | oh jesus | 18:46 |
| klafka | that seems like an annoying hessian | 18:47 |
| fenn | it's actually not so bad, the annoying thing is it's all n dimensional which is too much for my poor brain | 19:00 |
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| JayDugger | Good evening, everyone. | 19:07 |
| kanzure | hello | 19:08 |
| JayDugger | Good night, everyone. | 20:14 |
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| kanzure | does anyone know a print-to-fax web service? | 20:34 |
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| fenn | guh.. http://fennetic.net/irc/IMG_0649.JPG | 21:59 |
| fenn | gotta love math problems that pull in definitions you didn't know about | 21:59 |
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| genehacker | what's that math for? | 22:16 |
| genehacker | also found some ballscrews, any recommendations for what I should do with them? | 22:25 |
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