Second iteration of my ArduRoller balance bot with an all new wooden chassis. Specs: - Chassis: laser cut 2.7mm bamboo ply (Ponoko); various M2.5 machine screws from Amazon; Instamorph low-melt-point thermoplastic to fill in the gaps. - Brains: 1 x Arduino Uno - Motor driver: 1 x Sparkfun Ardumoto - Motors: Sparkfun 2 x 24:1 gearmotor - Wheels: 1 set Sparkfun 70mm -- repaired with Instamorph after they cracked around the axle - Gyro: 1 x ADXRS613 (Sparkfun breakout) mounted at the axis of rotation - Accelerometer: 1 x ADXL203CE (Sparkfun breakout) mounted at the axis of rotation - Batteries: 2 x 3.7V Li-poly 850MAh (Sparkfun) I've shared the code and assets at github.com/fasaxc/ArduRoller. Video is at www.flickr.com/photos/fasaxc/5944650602/