#robotics Logs

Nov 14 2011

00:25 rue_house I BELIEVE I like the MCP4728 as a DAC
01:04 rue_bed and I swear its still cheaper for me to make a usb audio converter than to buy one
01:04 rue_bed wtf's with that?
01:04 rue_bed the $30 one I bought is junk
13:23 -adams.freenode.net:#robotics- [freenode-info] please register your nickname...don't forget to auto-identify! http://freenode.net/faq.shtml#nicksetup
15:16 coppermine can someone show me a url of a DC motor that can pull 100lbs of payload?
15:16 coppermine 12vdc
15:16 coppermine google searches doesnt really show any
15:16 coppermine or maybe they dont exist
17:13 dunz0r coppermine: A wheelchair engine or so might work.
17:13 dunz0r Or something that you put on battle "robots"
17:14 coppermine NPC-41250 Motor
17:14 coppermine i like these
17:14 dunz0r Dewalt make som nice ones
17:14 coppermine trying to find an appropriate motor controller for it though
17:14 dunz0r http://www.robotmarketplace.com/products/dewalt_motors.html
17:14 coppermine 220lbs with 4 of those
17:14 dunz0r For something taht big, you're probably better of building an H-bridge on your own.
17:14 coppermine i prefer something pre-built
17:14 coppermine with usb interface
17:15 dunz0r Since it will probably mighty pricey to get a controller that can handle that amount of current
17:15 dunz0r http://www.robotmarketplace.com/products/dewalt_motors.html
17:15 coppermine big capacitor?
17:15 dunz0r No, big transistors.
17:15 coppermine i dont like dewalt motors they have no output shafts
17:15 coppermine and i dont know enough about it to add one
17:16 dunz0r You probably want to gear it in some way anyway.
17:16 dunz0r The NPC-41250 do seem nice
17:17 coppermine dunz0r: yes
17:17 coppermine ill find some appropriate controllers for them
17:17 coppermine i need serial and/or usb
17:17 dunz0r Something like this: http://www.robotmarketplace.com/products/0-SCORP-XL.html with an arduino maybe?
17:18 dunz0r Or some other microcontroller.
17:18 coppermine 45A peak
17:19 coppermine maybe i should go witha 100lbs bot
17:19 coppermine instead of 220
17:19 coppermine might be easier
17:19 dunz0r Hauling a hundred kilos around is quite difficult
17:19 coppermine i would think
17:19 coppermine no room for errors either
17:19 dunz0r If that thing goes haywire...
17:20 coppermine hit the kill switch button
17:21 coppermine which reminds me, i need to order a remote control relay
17:21 coppermine for my current 10lbs robot
17:21 coppermine so i can disable it from remote in case its about to crash
17:21 nz0r is currently planning for a 3kg/ 6.6 lbs
17:22 coppermine dunz0r: want to see a pic of mine?
17:22 coppermine i built it over the weekend
17:22 dunz0r coppermine: Sure! :D
17:22 dunz0r No picture of mine yet. It's nothing more than two motors, motor mounts, and an H-bridge. No base yet even.
17:23 coppermine http://www.solarlinux.org/robot.jpg
17:24 coppermine you didnt hit my apache server yet
17:25 coppermine oh well
17:25 coppermine time limit is up
17:25 coppermine you cant see it anymore
17:29 dunz0r Bastard.
17:29 coppermine good luck
17:29 dunz0r I had to go to the toilet :(
18:56 dunz0r I was about to say there should be a 100kg sumoclass, then I realised that 100kg of autonomous robot is a very bad idea.
19:04 coppermine land vehicles arent as fun as UAV or mini submarine
19:04 coppermine UAV quad rotor sounds fnu
19:04 coppermine fun
19:16 Tom_itx z
19:16 zhanx in baltimore
19:17 Tom_itx shipped
19:17 zhanx cool
19:54 rue_house were having power outages every day now
19:54 rue_house ARG
19:54 rue_house what time did I go down?
19:54 Tom_itx hahaha
19:54 Tom_itx i told z that you would ask
19:54 Tom_itx i better add the joins and parts back to my log
19:56 Tom_itx <rue_bed> the $30 one I bought is junk
19:57 Tom_itx last thing said in channel before hand
19:57 rue_house !thislog
19:57 rue_house !thislog
19:57 tobbor This one: http://rueshouse.dyndns.org:82/~ircjunk/irclogs/html/%23robotics-2011-11-15.html
19:57 rue_house drat
19:57 rue_house lost all my browser windows
19:58 rue_house ah no, iceweasel is smart