This little number is an interface board for any BS2-compatible or Stamp Stack II controller, it is intended for use with products that were designed to accept Solarbotics add-on brainboards such as the Sumovore and ScoutWalker III.
The Solarbotics Sumovore Kit is a strong, modular design with over 500 man-hours of development and 21 prototypes behind it. It has more power, speed, and is less expensive than the Junun Mark III, Parallax Mini-Sumo, and Tab SumoBot.
Looking for the smallest Atmel microcontroller with built-on motor drivers? The BittyBot MEGABitty microcontroller features an Atmel ATMega8L, motor drivers, and voltage regulation in tidy 0.9" x 0.9" package!