I have recently finished a new and improved version of the Pixybots. Presenting Pixybots v2.3. The original program has been fine tuned to be more responsive. The robot also has may other features including a upgraded laser cut chassis, deans power connectors, pan/tilt head, and IR cliff detection in the front. If you have not seen the Pixy robots before there is alot of information on the orginal version in the projects page.
Here is a short clip of them in action enjoy!