Project 16 · Sensor Catalog (Vol III)

Flame Sensor

Build a fire-detection circuit that "sees" heat using infrared light.

Easy 30 min 5 components
Flame Sensor wiring diagram

What you'll learn

  • Understand how infrared phototransistors detect heat and flames.
  • Compare Analog vs. Digital signals for threshold monitoring.
  • Calibrate a sensor trigger point using an onboard potentiometer.
  • Implement a basic early-warning serial monitoring system.

What's in the kit

  • Arduino UNO
  • Flame Sensor Module (4-pin)
  • Breadboard
  • Jumper Wires (Male-to-Male)×4
  • USB Cable (A to B)

Protocol: analog