Sumo Robot is a small, autonomous or semi-autonomous robot designed to compete in sumo competitions, where two robots try to push each other out of a circular arena (dohyo). This concept is inspired by traditional Japanese sumo wrestling, where two wrestlers compete with a similar goal.

The idea of the sumo robot first emerged in Japan in the late 1980s as a way to combine robotics technology with cultural elements. Over time, this competition has become a platform to test participants’ skills in mechanical design, electronics, and programming.

Sumo robots are typically equipped with sensors, powerful motors, and advanced algorithms to detect opponents and strategize their moves. The materials used are usually lightweight yet strong, allowing for agility and durability. Today, this competition is popular worldwide, with categories based on the size and weight of the robots, 

The match takes place in a circular arena with a specific diameter, marked with boundary lines. Two robots are placed on opposite sides of the arena. Once the signal is given, both robots are activated and automatically move to detect and push the opponent out of the arena. The robots use motors for movement, sensors (such as infrared or ultrasonic), and algorithms for navigation and attack strategies. The winner is the robot that manages to stay inside the arena while pushing the opponent out.