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Hard⏱ time3.5 hr$ cost28

Fire-Detecting Robot

A flame sensor steers a robot toward a small flame and triggers a fan or pump to put it out.

Start building ↓
fig — working model Result first

The build

Step 01

Add flame sensors

Mount sensors that detect a candle's IR.

Step 02

Wire the drive

Standard motor driver and wheels.

Step 03

Add a snuffer

Fit a fan or water pump at the front.

Step 04

Hunt & douse

It drives toward the flame and blows it out.

Working Principle

Flame sensors detect the infrared from fire; the robot turns toward the strongest reading, approaches, then triggers its extinguisher.

The science behind it

A closer look

It's seek-and-act behaviour using directional sensing, a simplified model of real fire-fighting robots. Always supervise the flame.

Take it further

Variables to test

  • 1 Add more sensors — better aim at the flame?
  • 2 Compare a fan vs water for snuffing speed.

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