Abstract
In this paper, we propose a modular robot system generating actions based on photo-detection. We particularly propose the chain action generation by propagating light. Many of the modules consist of non-identical modules, easily replaced and connected. We make up autonomous decentralized control system by generating motivations of the modules to transform local structure with LED and photo transistor. In the first, by communicating light between the electrically-independent modules, the modular robot acts meandering motion without microcomputer. Herewith, the modular robot is downsized, power saving, low-cost, excellent environment adaptability and under simple control. In the future, the modular robot will snake narrow and winding road by proximity sensor.
