If you don't fancy making your own chassis, there are also a number of pre-made rover chassis available. They are as follows:
- 2WD Magician Robot Chassis from https://www.sparkfun.com/
- 4-Motor Smart Car Chassis from http://www.dx.com/
- 2-Wheel Smart Car Model from http://www.dx.com/
A particularly nice robot setup is the TiddlyBot (from http://www.PiBot.org), which combines multiple sensors, continuous servos, an onboard battery pack, and the Raspberry Pi camera. An SD card is set up so the TiddlyBot ...