#robotics Logs

Jul 14 2017

01:26 AM rue_shop3: this M3 thing is getting insane, I have a whole handfull just from power supply heatsinks
01:38 AM rue_house: anniepoo,
01:39 AM rue_house: http://ruemohr.org/~ircjunk/images/p1090122.jpg want to come to my place and have a good time?
01:40 AM rue_house: TV, resistors, mosfets...
01:40 AM rue_house: ...tant caps...
01:40 AM rue_house: if you look hard enough, there are even some bicolour leds...
01:51 AM * rue_shop3 pulls out a handfull of TL431
01:53 AM rue_shop3: ECHO
02:22 AM rue_shop3: hmm, I need to make some smaller bins too
02:29 AM synja: you need a robotic ai to help you organize all your shit
02:40 AM rue_shop3: its interesting, from the volume of parts comming out of the power supply stripdown project, I dont spend lots of time stripping boards
02:40 AM rue_shop3: its doubling most of the bins I have of particular parts
02:40 AM rue_shop3: well, just screws, which there aren't technically many of, there are a lot of
02:44 AM rue_shop3: I could only get opto isolators off about 1/3 of the boards that had them
02:44 AM rue_shop3: and maybe only 1/3 of the boards had them
02:44 AM rue_shop3: there is a handfull of them
03:00 AM rue_shop3: if you ever need a 2sc945, your odds of finding one in a computer power supply are HIGH
03:01 AM rue_shop3: lOts of them
03:01 AM rue_shop3: npn
03:01 AM rue_shop3: 50V
03:01 AM rue_shop3: gain of 70+
03:02 AM rue_shop3: 150mA
03:06 AM synja: rue_shop3, have you ever had to insert the disk from one HDD into another to get your data back?
03:25 AM rue_shop3: I dont think you can
03:25 AM rue_shop3: things dont line up
03:25 AM rue_shop3: A733 is equally useless, a pnp version of the c945
03:27 AM Anniepoo_: you need clean room to open it
03:33 AM synja: well, i'm going to try
03:33 AM synja: if i can ever find the right screwdriver to fit the job...
03:34 AM synja: platter*
03:34 AM synja: that's what it's called
03:37 AM rue_shop3: open it?
03:38 AM synja: yeah to replace the platter into another enclosure
03:38 AM synja: i doubt it will work, but i'm going to try it
03:38 AM synja: i don't have those torx drivers
03:38 AM rue_shop3: they got a filter
03:38 AM synja: what do you mean
03:39 AM rue_shop3: bigger problems are handling the heads and making sure things line up
03:39 AM synja: lol yeah i figured
03:39 AM synja: that's going to be tricky
03:39 AM rue_shop3: my understanding is that their formatted in the drive to the alignment is right
03:39 AM synja: ...
03:39 AM synja: heh shit
03:39 AM synja: i figured it's a 1/1000 shot anyways
03:40 AM Anniepoo_: you can do it-the data recovery services do it
03:40 AM synja: well without the right tools i most likely will fuck it up
03:40 AM synja: so i'm going to try on another first
03:40 AM synja: to get the technique down
03:40 AM rue_shop3: anniepoo, almost have that pile sorted
03:40 AM Anniepoo_: nice
03:41 AM synja: i can't even find my smallest flathead though to try it
03:41 AM synja: i think i used it to scrape my pipe at some point..
03:41 AM rue_shop3: bah, all these are 150mA transistors
03:44 AM rue_shop3: VN88AF
03:44 AM rue_shop3: almost, 1A, 50V fet
03:44 AM rue_shop3: 4 ohms
03:45 AM rue_shop3: I have 5 of them
03:51 AM synja: maybe needlenose
04:03 AM synja: yeah fuck it. i don't have the tools to do this right
04:04 AM synja: 99.8% of the data was backed up anyways
04:30 AM rue_house: http://ruemohr.org/~ircjunk/images/p1090122.jpg
04:30 AM rue_house: I got that lot component-type sorted anyhow
04:31 AM rue_house: sorted out the 2sc945 2sa733 1015 and 1815 and TL431's
04:56 AM synja:
04:56 AM synja: nevermind - found the tools!
05:52 AM synja: lol looking around for an extra GOOD hdd that could fit the platter, i find none. a stack of 12 broken hdds sits in front, mocking me with every glance
08:53 AM Snert: save the magnets.
08:58 AM durrfaroo: save all the magnets
08:59 AM durrfaroo: lately most of what i have been using magnets for is when someone asks me if i have magnets
08:59 AM Obi_Code_konobi: what do u use the magnets for
09:00 AM durrfaroo: hard drive magnets are useful to screw onto the wall then hold shit
09:00 AM Obi_Code_konobi: durrfaroo, lol yeah they are hard bastard magents i have heaps of them. I just scrapped 14 hdd
09:00 AM Obi_Code_konobi: durrfaroo, i currently use the hdd magnets for my car oil sump lol
09:05 AM Snert: I have lots and lots of hdd magnets.
09:06 AM Snert: I wanna make a wind generator from them.
09:06 AM Snert: but the key is having like.... 24 of them that are exactly the same.
09:07 AM Snert: or some number of them that works out to make a n alternator out of.
09:08 AM Snert: the old seagate scsi 9gig drives have hellaciously powerful magnets in them.
09:08 AM durrfaroo: i have taken apart so many harddrives in my time
09:09 AM Snert: getcher finger twixt 2 of them and you're in for a trip to the hospital for a stitch.
09:12 AM Obi_Code_konobi: Snert, i am also interested in making a wind generator
09:12 AM Obi_Code_konobi: im also looking into a water mill
09:13 AM Snert: I figure I'll have to drive the wind generator with an electric motor on my bench for the test scenario.
09:13 AM Snert: but.....
09:14 AM Snert: a brake disc from a car with magnets on the rotor.
09:15 AM Snert: wish I had a creek to do a waterwheel.
09:15 AM Obi_Code_konobi: snert i strip cars periodically
09:15 AM Obi_Code_konobi: Snert, im looking at making the water wheel without a river with continious water loop
09:16 AM Snert: I'm trying to visualize that.
09:16 AM Snert: do you have a stretch of downhill available or something?
09:16 AM Snert: or how big is the water loop?
09:19 AM Obi_Code_konobi: i havent built it yet
09:19 AM Obi_Code_konobi: but
09:19 AM Obi_Code_konobi: but i feel i need 2 tanks
09:19 AM Obi_Code_konobi: one below and one above
09:20 AM Obi_Code_konobi: continiously fill it with enough water flow should keep it running ongoing
09:20 AM Obi_Code_konobi: the above tank should have an over fill pipe leading to lower tank
09:20 AM Obi_Code_konobi: i have three spare car alternators
09:20 AM Obi_Code_konobi: as well
09:36 AM Snert: the waterwheel sounds fun.
09:37 AM Obi_Code_konobi: Snert yeah ive been thinking about it for a couple of months. i think ill save some money up and do it soon
09:54 AM Tom_L: http://www.thebackshed.com/Windmill/fp2a.asp
09:56 AM Obi_Code_konobi: interesting
10:14 AM Snert: I've seen several designs using a brake disc rotor with magnets glued on the brake rotor.
10:14 AM Obi_Code_konobi: Snert, sounds interesting
10:15 AM Snert: but they key is in having 24 magnets of all the same kind/shape/thickness.
10:15 AM Obi_Code_konobi: im just going to use multipule car alternators on the water mill, with like a adjustable pressur for the alternator onto the wheel
10:15 AM Snert: which means at least 24 hdd of the same kind.
10:15 AM Obi_Code_konobi: ohh
10:16 AM Tom_L: F & P makes a good generator
10:16 AM Snert: Tom_L: bookmarked for further study :)
10:16 AM Snert: I might be able to pull that one off.
10:17 AM Snert: but I don't have a welder.
10:17 AM Snert: I'm rather limited. Drill press and a chop saw if it can't happen with that it don't happen.
10:17 AM Snert: though I'd actually buy a welder if it looks doable.
10:36 AM rue_house: think brake disc rotor with alternating magnet polarities
10:37 AM Snert: yea, maybe 2 rows of magnets on each side.
10:37 AM Snert: all depends on zactly how many magnets of the same kind I can collect.
10:39 AM Snert: they're wonderful...but each drive has a different thickness of magnet...differing strengths too.
11:31 AM rue_shop3: ~ slaps his hand for reaching for cookies "Moderation!", the answer comes back "I was using modulation!" ~
06:45 PM whatifs: hello
08:11 PM rue_bed: xkcd?
10:28 PM rue_house: ok
10:28 PM rue_house: gee things stay busy around here
10:44 PM Anniepoo_: hey
11:33 PM rue_shop3: ?
11:33 PM rue_shop3: one more box for transformers... special