Reader Shaun Crampton sent us the specs for the second prototype of his ArduRoller:
- 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)
There’s video here, and code and chassis files on GitHub. [Thanks, Shaun!]
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