Loon is a multi-robot system designed for navigation and exploration tasks.
The smaller robot rides on the back of the larger one until it is time for the two to separate and complete separate tasks. PBMin is a Pole Balancing Mini-robot. It utilizes a 36 node neural net that learns to balance a pole. The pole is attached to a variable resistor to sense pole angle and two infrared sensors to measure cart position. There is a paper on PBMin TBMin stands for Trailer Backing Mini-robot.