#robotics Logs

Apr 26 2014

00:12 GargantuaSauce demand
00:12 GargantuaSauce there are more cell phones than people in a number of countries
00:13 rue_house duh, one for work, one personal, and one for special callers
00:13 rue_house it wouldn't be if they would just make it so you could put multiple accounts on one phone
00:14 rue_house 8G usb drive, average price, $8
00:15 rue_house 8G usb smurf drive, average price, $5.50
00:15 rue_house "sorry, we made it look like a smurf"
00:16 rue_house I think smurf meets scaple for -2.50
00:17 GargantuaSauce ya -2.5 for some plastic you have to rip off is a pretty decent deal
00:18 blockh34d which smurf though
00:19 blockh34d if its brainy smurf you can just leave him on there
00:22 rue_house funny, I dont remember binary smurf or 802.11n smurf
00:24 rue_house ok, I have bid on quite a multitude of stupid looking usb drives
00:24 rue_house why?
00:24 rue_house I dont know why
00:25 rue_house but I'm not gonna win the pretty-freaking-awesome-specs projector
00:25 rue_house however
00:25 rue_house I have two outdoor bullet cameras
00:25 rue_house led lights for the hosue
00:26 rue_house led lights for the truck headlights
00:26 rue_house a temp guage for the fridge (WHY?!)\
00:26 rue_house a solar controller
00:26 rue_house a funky unfolding (willprobably break) usb wireless mouse
00:27 rue_house by morning I may ahve some silly usb drives
00:27 rue_house end of tommorow I may have more cameras
00:28 rue_house and maybe a set of centre drills for hte lathe
09:57 blockh34d why use goofy usb drives rue_house ?
09:58 blockh34d are they cheaper than getting non-smurf etc drives? or theres something special about those you need?
10:03 GargantuaSauce you know how semiconductor binning works right?
10:04 GargantuaSauce smurf-shaped drives use the cream of the crop
10:25 blockh34d i still think it depends on which smurf we're talking about
10:25 blockh34d brainy smurf ftw
10:26 blockh34d there should be a maker smurf
10:26 blockh34d maybe a cousin of handy smurf etc
10:27 blockh34d but maker smurf's got a 3d printer
10:41 rue_bed smurf drives are up to 50% cheaper
10:55 blockh34d how many drives are you getting?
10:56 rue_bed I won 2 or 3
10:56 blockh34d seems like the effort of seperating the drive from the smurf, and the lack of another case, could be a bigger drawback than the cost savings offset
10:57 rue_house its up to 50% off the lowest prices
10:57 blockh34d oh cool
10:57 rue_house basically, you dont see usb drives for less than $1/G
10:57 blockh34d well hey w2g
10:57 blockh34d i do, in america
10:57 rue_house unless its shaped like a smurf
10:57 blockh34d its common
10:58 blockh34d i get 8gb usb drives for less than 5 bucks
10:58 blockh34d i think more like 3-4
10:58 blockh34d at microcenter
10:58 rue_house here they are charging must more
10:58 rue_house much
10:58 blockh34d wherer is here?
10:58 rue_house canada
10:58 blockh34d maybe you can mail order from microcenter
10:58 blockh34d got any friends in usa?
10:59 rue_house I see prices about $8 for a 1G drive
10:59 blockh34d you could have them sent here, buy me a postage envelope and i'll send them to you
10:59 rue_house I think the lowest locally is $5/G
10:59 blockh34d wow that blows my mind
10:59 blockh34d so expensive
10:59 rue_house yea
11:00 rue_house and I just want small ones
11:00 blockh34d did you know old xbox memory units are flash drives?
11:00 blockh34d the first xbox's that is
11:00 rue_house hmm
11:01 blockh34d yah microcenter here has 8gb usb2.0 drives for 4.99 usd
11:01 blockh34d 32gb for 15 bcks
11:02 blockh34d http://www.microcenter.com/product/280099/8GB_USB_20_Flash_Drive
11:02 rue_house http://www.atic.ca/index.php?page=Products&cat=82
11:03 rue_house even the deals from the cheap place dont hit that
11:03 blockh34d microcenter is just down the road here
11:03 rue_house hmm $2/G average
11:04 rue_house http://search.ncix.com/search/?qcatid=0&q=flash+drive
11:04 rue_house they have 8G for $5
11:04 blockh34d USD or CAD?
11:04 rue_house thats cad
11:05 blockh34d they're pretty close anymore right?
11:05 blockh34d well that sounds like a great deal then
11:05 rue_house + shipping...
11:05 rue_house or ~$50 to go over there
11:05 blockh34d ohhh thats how they get you
11:06 blockh34d maybe you can buy the caseless chips from alibabba
11:06 rue_house if someone had 1G drives for $1 I'd buy a bunch
11:06 blockh34d just usb drives that havent been branded yet etc
11:06 blockh34d i think that might be old xbox save drives
11:06 blockh34d but i dunno if they were 1gb
11:06 blockh34d more like 256mb or maybe 512
11:06 rue_house I think they are using 32 or 16G dialable chips, and dialing the defective ones down
11:07 blockh34d ah yah
11:07 blockh34d wouldnt surprise me
11:07 blockh34d are you making a robot army?
11:07 blockh34d minions
11:07 rue_house just cause their being impossble to find
11:08 rue_house you cant just stick little bits of storage on a project
11:08 blockh34d what are you using for brains?
11:08 blockh34d i kinda think BBB's have a couple gigs on board
11:09 blockh34d not super sure about that though
11:26 rue_house this is for brainless, the brains plug in
11:28 rue_house http://www.ebay.ca/itm/3M-Textool-Zip-Strip-Socket-20-Pin-SIP-ZIF-Zero-Insertion-Force-220-2600-00-0602-/141252926673
11:28 rue_house ^^ sip zif!!
11:28 rue_house hahaha
16:07 MrCurious http://digg.com/video/this-is-how-you-turn-a-concerto-into-a-battle
18:47 MrCurious anyone working on anything cool today?
19:21 Tom_itx sure
19:22 Tom_itx playing with my S4
19:22 Tom_itx rewriting some code so i can import some sql files to it
19:22 Tom_itx nearly done
19:23 MrCurious http://projectnaptha.com/
19:24 MrCurious nice how it does language translation
19:25 Tom_itx yours?
19:25 MrCurious nope
19:25 MrCurious just darn cool
19:25 MrCurious i am setting up apache allure in a vm on my openstack laptop
19:26 MrCurious looked useful http://allura.apache.org/
21:25 MrCurious anyone have a opinion on usb mimicroscope/magnifiers... considering this one so i can see that i am soldering with my od guy eyes http://www.ebay.com/itm/2MP-USB-Digital-Pen-Microscope-Video-webcam-Magnifier-Camera-Stand-Andonstar-Cam-/121292898829?pt=LH_DefaultDomain_0&hash=item1c3d9ec20d
21:28 MrCurious Tom_itx: do you have a soldering microscope?
21:31 GuShH_ any ideas on stripping the yellow chromate off bolts?
21:32 MrCurious GuShH_: you could do it with a lathe
21:32 GuShH_ chemically or electrochemically speaking
21:32 MrCurious acid, electricity something like that
21:32 GuShH_ mechanically you could do it with many tools.
21:32 GuShH_ MrCurious: sounds very scientific!
21:33 MrCurious are they expensive, can you afford to test various methods without going broke
21:33 GuShH_ even a wire brush will remove it, but I want something simpelr
21:33 GuShH_ regular high grade bolts are all chromate coated here...
21:33 GuShH_ you know, the yellow-ish looking hardware.
21:33 GuShH_ that's zinc chromate
21:33 GuShH_ just a thin passivation layer
21:34 GuShH_ trying to blue the steel, turns gray instead... can't seem to remove the layer easily
21:34 MrCurious i googled it for you
21:34 MrCurious http://www.wikihow.com/Remove-Chrome-Plating
21:34 MrCurious :P
21:34 GuShH_ is it the same as chrome?
21:34 GuShH_ I think hydrogen bubbles will pull chrome off
21:34 GuShH_ ie. same process as derusting
21:34 GuShH_ maybe I should try that
21:35 MrCurious http://en.wikipedia.org/wiki/Chromate_and_dichromate
21:35 GuShH_ I should be playing with stainless steel bolts (and giving them a nice satin finish with FeCL) but I couldn't source any
21:35 GuShH_ I find these articles very.. uninspiring
21:36 MrCurious you wanted inspiring.... i can give that... http://www.venganza.org/
21:36 GuShH_ some tool on a forum said to use acetone, lol
21:36 GuShH_ if acetone strips the plating, I'm the pope.
21:37 GuShH_ maybe I should ask for unplated bolts, see if they got some
21:37 GuShH_ seems they only carry the good stuff at this place
21:38 GuShH_ or the "better" stuff
21:38 GuShH_ hahahaha look at the keyboard, is that cigarette ash? http://weldingweb.com/attachment.php?attachmentid=34283&stc=1&d=1244513107
21:38 GuShH_ oh god
21:39 GuShH_ (just one of the google results http://weldingweb.com/showthread.php?31198-Are-Grade-8-bolts-a-respiratory-hazard-to-weld not highly relevant in stripping the coating)
21:40 GuShH_ http://429mustangcougarinfo.50megs.com/new_page_26.htm
21:40 GuShH_ nice
21:40 GuShH_ ok it was dichromate, not chromate
21:41 GuShH_ then again I wasn't very interested in chemistry back in the day.
21:41 MrCurious why do you want it gone? it seems a good thing to have
21:42 GuShH_ I'm blueing the part
21:42 GuShH_ which is why I need bare steel
21:42 GuShH_ it's a whim.
21:42 GuShH_ any passivation coating is GOOD
21:42 MrCurious you sure it isnt gold admium?
21:42 GuShH_ ...
21:43 GuShH_ http://429mustangcougarinfo.50megs.com/Zinc%20Dichromate81.jpg
21:43 MrCurious says zinc dichromate and gold cadmium are indistinguishable
21:43 GuShH_ I tried to hot blue it, turns grey. even if you lightly sand the surface so it shows steel, unless you really get deep.
21:44 MrCurious and cadmium is not a friendly chemical
21:44 GuShH_ I guess after a certain temperature it should all burn off, I don't care about the case hardening in this case
21:44 GuShH_ neither is zinc dichromate
21:44 GuShH_ how dare they call budweiser "beer" it's not beer.
21:48 MrCurious its like making ove in a canoe
21:48 MrCurious love
21:56 MrCurious GuShH_: check your PM
22:15 rue_house Tom_itx, you need new 4-40 taps, where do you get them
22:24 Tom_itx at the local guy
22:24 Tom_itx why?
22:27 Tom_itx MrCurious, yes
22:28 Tom_itx google AMSCOPE and 7 x 45 ZOOM
22:28 Tom_itx you want one with ZOOM
22:30 Tom_itx http://www.amscope.com/sm-4b.html
22:31 Tom_itx very close to mine. mine has a bit different stand
22:31 Tom_itx http://tom-itx.dyndns.org:81/~webpage/scope/scope1.jpg
22:35 GuShH_ cute vise
22:35 ShH_ b
22:36 MrCurious too spensie for me
22:36 Tom_itx it has covered itself
22:37 nanogru any recomendations here for mounting a bicycle wheel to a 1/2" axle
22:37 Tom_itx as have most of my 'tools'
22:37 nanogru was thinking welding
22:37 MrCurious true
22:37 MrCurious you replied 5 minutes after i ordered the ub scope
22:39 Tom_itx it looks ok too
22:39 Tom_itx protect the lens
22:39 Tom_itx i added a clear filter to mine i can take off and clean
22:42 Jak_o_Shadows hell. What do you call the proper name of the servo type connections/sockets?
22:44 nanogru servo horn?
22:45 nanogru no that's the adapter
22:46 nanogru The actual thingy at the end is an output shaft
22:46 nanogru things you attatch to it are horns
22:46 Jak_o_Shadows Nah, the electrical connections
22:46 nanogru oh
22:47 nanogru pwm connector
22:47 nanogru or 3 pin
22:47 nanogru most often pwm
22:47 Tom_itx c-grid
22:52 nanogru c-grid? that's not used on servos
22:52 Tom_itx some of em
22:52 GuShH_ rue_house: https://www.youtube.com/watch?v=7jupUFpMk2M
22:53 nanogru most standard servos are 3 wire pwm
22:53 nanogru 1 power, one ground, one signa
22:53 GuShH_ "what is my purpose?" PASS THE BUTTER
22:53 GuShH_ hahaha
22:54 Jak_o_Shadows I just care about the physical connection. I'm wanting to buy a bunch, and searching for servo plug brings up junk
22:57 Tom_itx inflex got em in bulk from china, ask him...
22:58 nanogru what do you mean you don't care about the connection
22:58 nanogru what is it that you need and what for
22:59 Jak_o_Shadows First use is for connecting stuff to a RAMPS board, second use is for having less dodgy connections on robot.
22:59 Jak_o_Shadows so just general not huge curretn connections
23:01 nanogru yeah go with standard 3 wire connectors
23:02 nanogru they're standard and will work everywhere
23:13 GargantuaSauce Jak_o_Shadows: .1" dupont connectors
23:14 Jak_o_Shadows woo! dupont.
23:14 GargantuaSauce http://www.ebay.com/itm/100pcs-3P-Dupont-Jumper-Wire-Cable-Housing-Female-Pin-Connector-2-54mm-Pitch-New-/170879495413?ssPageName=ADME:L:OU:CA:3160
23:14 nanogru that's the name!
23:14 nanogru thank you gargantuasauce
23:16 GargantuaSauce http://www.ebay.com/itm/100x-Dupont-Jumper-Cable-Wire-Female-Pin-Connector-2-54mm-DIY-Good-Quality-New-/170893664219?ssPageName=ADME:L:OU:CA:3160 almost forgot
23:16 Jak_o_Shadows yep, need the other half.
23:16 GargantuaSauce you'll also need a crimping tool, doing it with pliers is a pain
23:31 Jak_o_Shadows Righto. 100 x3pin, 100 x4pin, 200 xthe other half bits
23:35 Jak_o_Shadows for like 5.70 usd
23:35 GargantuaSauce may as well get enough pins to fill all the holes
23:36 Jak_o_Shadows Didn't think of that.
23:36 GargantuaSauce made the same error
23:36 Jak_o_Shadows Eh. Won't actually need to use them all for some time
23:36 GargantuaSauce there are also male ones that may be useful
23:38 Jak_o_Shadows I will see how I do with the current ones