My robot car is very simple. It has two wheels, each connected to its own motor. The two motors are driven at different speeds to steer the car. The back wheel is mounted on a really cool caster that I built with Eric (one of the instructor dudes).

my robot

the car

the car's rear side

infrared transmitter	An infrared signal is broadcasted from a transmitter hooked up to a handyboard (one of those circuity things which is a minicomputer).
infrared receiver	The signal is detected by the tower, which consists of three directional infrared receiver dohickeys, oriented in three quadrants.

Click "code" to see the ic code i wrote to make the robot flee or chase the signal. To change from flee to chase you simply reverse the polarity of the motors.

Lastly, here is a picture of me being returned from my latest alien abduction. Aliens are really quite friendly, so watch X-files with a grain of salt. In fact, during my most recent body probing session, they were kind enough to detach my head and bring it to the other room so that I could join in their game of poker.