We have two circuit diagrams that will help with the CAT5 rule for Japanese Sumo

• You will need to find 4 SPDT relays whose contacts can handle the current needed for each motor. e.g. if your motor draws 1.2amps at free speed and 1.9amps at stall then choose a relay with at least a 3 amp capacity (one and a half times the draw)

• Now if your motor voltage and the coil in the relays are the same voltage then click here .pdf 178 Kb

• If the motor voltage (or the battery voltage) is much higher than the coil voltage then click here .pdf 204 Kb

The heavier lines should use 18ga wires and the thin lines can use 24ga wires

It's Here!
How an autonomous Sumo robot can sense the edges and change direction.

Click here to download the pdf file (69KB) Autonomous Theory and Circuit.
You will need Adobe Acrobat Reader to view this file.

Written by Colin Mantay and endorsed by the Manitoba Robot Games, this well written document explains the electronics behind the Autonomous Sumo Robot and comes with full schematics. A circuit layout and parts kit is being planned and we hope to have them available for sale soon.