As of July 21st 2009, Kyohritsu has launched a new way to control their Wonder Kit called the Remocon (shorthand for remote control) Chaser 2. The kit costs $30 USD and can be configured using identical parts for wheels and legs to those of the standard Wonder Kit.
The robot tracks the IR signal emitted from your tv/dvd remotes using a light sensitive photo transistor for good ol’ fashioned robot insect fun. The robot is controlled by a PIC microcontroller and powered by four AA batteries and joins Wonder Kit’s line of accessories that include obstacle avoidance and line tracking, and the Puchi Robo series.
[source: Impress Robot Watch]