UBRobotics competition

Sumobot

Build a robot with your team and compete in the sumo ring.

Sumobot 2026

Team registration and the parts shop require an eligible society account.

Competition rules

Core Rules

  • The sumobot must fit within a 200x200mm square
  • The maximum weight for the sumobot is 750g
  • Only actuators and batteries obtained through UBRobotics may be used
  • Members are free to use their own non-restricted components, radio systems, structural material, LEDs, etc.
  • UBRobotics reserves the right to exclude any sumobot deemed dangerous

Base Parts Provided

  • 2x TT Motors
  • 1x SG90 Servo
  • 1x MX1508 Motor Driver
  • 1x Breadboard
  • 1x UBRobotics Brand ESP32 Microcontroller
  • 5x NiMH AA Batteries
  • 10x Battery Tabs
  • Additional wires, bolts, and acrylic sheeting are also provided

During the Competition

  • Sumobots will fight 1v1 on an elevated plywood and acrylic platform acting as the arena (900 x 900 mm)
  • The sumobot team to leave the arena loses
  • A sumobot incapable of motion will be counted out within 10 seconds unless you can display control
  • Matches are limited to 2 minutes maximum. In the event that neither sumobot is eliminated within the time limit, the winner will be determined by judicial decision
  • If your sumobot is not operational or you are not ready in time for your scheduled match, you will have been considered to have forfeited the match

Teams

  • Teams will have 3-6 members
  • Late joiners or members without a team may be assigned to smaller, already established teams

Workshop lessons

Enlarged photograph