Project 10 · Sensor Catalog (Vol III)

IR Obstacle Sensor Module

Build a smart proximity detector that 'sees' objects using invisible infrared light.

Starter 20 min 4 components
IR Obstacle Sensor Module wiring diagram

What you'll learn

  • Understand the difference between IR emission and reflection.
  • Identify 'Active Low' logic used in digital sensor modules.
  • Learn how to calibrate sensor sensitivity using a potentiometer.
  • Build a basic entry-level automated detection system.

What's in the kit

  • Arduino UNO
  • IR Obstacle Sensor Module (FC-51)
  • Jumper Wires (M-to-F or M-to-M)×3
  • USB Cable (Type A to B)

Protocol: digital