Sumo robots are used to engage in a type of sport wherein two robots try to push each other out of a circle. Anyone can build a Sumo robot by gathering and assembling a few key parts. A power train is very important since a machine of this type requires good gear motors. The body must be tough because it will take a beating, so it is a good idea to give it a wedge-shaped structure. A reliable source of power is a must, along with sensors that can help the robot to detect the edge of the ring.
SUMO Robot
Infra-red receivers, transmitter pairs, and mechanical switches are needed to create the sensors. Infrared is also needed so that the other robot can be detected. Finally, the brains of a sumo robot can be simple, but it must have a basic control flow that will let it detect its opponent, move in the appropriate direction, and detect the edge of the ring.