Robot-sumo or robo-sumo is a sport in which two
robots attempt to push each other out of a circle.
The engineering challenges are for the robot to find its opponent (usually accomplished with infrared sensors) and to push it out of the flat arena. A robot should also avoid leaving the arena, usually by means of a sensor that detects the edge.
Robot-sumo is divided into classes, fought on progressivly smaller arenas:
- Standard class robots may mass up to 3kg and fit inside a 20cm by 20cm box, any height.
- Mini-sumo. Up to 500g mass, 10cm by 10cm, any height.
- Micro-sumo. Must fit in a 5cm cube.
- Nano-sumo. Must fit in a 2.5cm cube.
- Femto- sumo. Must fit inside a 1cm cube.
Classes are further divided into remote-controlled and autonomous robots.
Sumo robots are built from scratch, from kits or from Lego components, particularly the Lego mindstorms[?] sets.
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