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Hard⏱ time4 hr$ cost30

Mini Sumo Robot

Two robots push to shove each other out of a ring — sensors keep them in and aimed at the foe.

Start building ↓
fig — working model Result first

The build

Step 01

Build low & strong

Make a low, heavy pusher with grippy wheels.

Step 02

Add edge sensors

Sense the ring border to avoid falling out.

Step 03

Add seek sensor

Detect the opponent ahead.

Step 04

Program tactics

Search, charge, and back off from the edge.

Working Principle

Edge sensors keep the bot inside the ring while a forward sensor aims it at the opponent, then high-torque motors do the pushing.

The science behind it

A closer look

It combines safety reflexes (edge avoidance) with goal-seeking (find and push), a basic example of layered robot behaviour.

Take it further

Variables to test

  • 1 Lower the centre of gravity — harder to flip?
  • 2 Add a wedge front — better pushing?

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