Mecanum robotics platform for the Raspberry pi

thingiverse

I've been working on this mecanum drive platform for the past couple months. Currently I'm using it with my raspberry pi as a remote controllable mecanum platform but that will change once I add some sensors to it. Video of the platform driving around: http://www.youtube.com/watch?v=DRAkcRtQzG0 Code related to the project can be found on my github account: https://github.com/destos/mecanum-drive/https://github.com/destos/Adafruit-PWM-Servo-Driver-helpers Please let me know if you are building one and need any help. Instructions BOM general raspberry pi mini breakout bread board, with pi cobbler http://www.adafruit.com/products/914 http://www.adafruit.com/products/942 may work as well, haven't checked its size. 4x Continuous servos http://www.adafruit.com/products/154 adafruit pwm controller http://www.adafruit.com/products/815 power system Mini DC/DC Step-Down Converter http://www.adafruit.com/products/1065 2x lithium polymer batteries http://www.adafruit.com/products/328 JST female connectors a LiPoly charger mecanum roller and hub hardware 28x R3-2RS bearings http://www.vxb.com/page/bearings/PROD/kit715 http://www.thebigbearingstore.com/servlet/the-996/R3-dsh-2RS-R3-dsh-ZZ-Radial-Ball/Detail 56x 3/16" ID washers 28x Socket cap screws 10-24 Thread, 7/8" Length, McMaster #91251A246 28x Lock nut, Hex Locknut, 10-24 Thread Size, McMaster #90631A011 4x round servo arms, ( mine were laying around and came with other R/C servos, will try to find a source for this ) 1 can on spray on Plasti Dip ( for a higher friction on the rollers ) Instructions print 28 of mecanum_wheel_nut.STL and 28 of mecanum_wheel_bolt.STL, I'll be calling these rollers from here on out. can be printed in ABS or PLA I had to print about 14 at a time, as I had a higher failure rate due to plastic shrinkage when printing many. Print with at least one shell, as the external and internal surfaces should be rigid, especially on the nut version ( to prevent the nut from slipping ) print 2 of mecanum_base_v3_flipped.STL and 2 of mecanum_base_v3.STL, these will be our "hubs". more instructions soon!