Wonderful Robot Carnival: information Exchange Forum
Wonderful is also a great forum for robot builder to exchange techniques and know-how. For example, some builders that are involved in the robot survival game (similar to Mech Warfare) were chatting about the hit sensor design:
Basically, they're using a light sensor covered with a cube with walls of aluminum foil. As the opponent's pellets tear holes in the foil it allows light to hit the sensor proportional to the damage done by the attacker.
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