Kno2Bot was developed for the Roboking 2007 competition at the TU Chemnitz. The goal of the competition was to somehow move ping-pong balls from the own side of a playground to the enemy side of the playground. The two sides were connected by two tunnels only. Kno.2Bot had a localization system based on its odometry and was able to correct its position from distance measurements to the walls of the known playground. A solenoid powered kicker enabled it to shoot ping-pong balls.
I also wrote my term paper for high school about this robot: Bau und Programmierung eines Wettbewerbroboters (development of a robot for competitions).
The content is also available in German under http://www.j-robotics.de/index.php?site=kno2bot.