GreenFinder is a robot to cut the grass on a small area. It is not very efficient but it is funny! It uses 2 modified servo motors to move and an Atmel AT90S4433. If you try to do the same, use 4 motored wheels and improve the system to cut the grass.
GreenFinder doing its job in my garden (1.3 Mo)
The robot roll over (700 Ko)
Full source code in C (avr GCC) with an At90s4433: greenfinder.zip