Some notes on an Evil Robot
The platform utilized a small video transmitter (cost $200) and a tricycle system with two powered wheels. The third wheel was a free castor. Each wheel was powered by a servo that was modified to spin freely (disconnect the feedback potentiometer).
The main problems encountered were:
* Poor video quality * Poor video transmission range * Unable to right itself after being pushed over by feline foe.
The main advantages of the robot:
* Small size * Maneuverability -- fine, precise control * Stability * Multiple terrain capability. This robot could handle soil, deep carpet, and linoleum very well. * Modular and easy to repair. Most components were attached with nylon cable ties. This made field repairs quick and easy. * Cheap
A slow robot using low geared motors is much better than a high speed robot. A "burst speed" mode for long straight runs would be a good improvement.
Video -- Video of a test run of the robot in action. This is an 8MB AVI file.
Photos of the platform without the video camera. I call this construction technique "field expedient". Some call it "crappy".