Project 25 · Sensor Catalog (Vol III)

Hall vs IR — comparison lab

Discover the battle between magnetism and light by comparing two of the most popular 'non-contact' digital sensors.

Starter 20 min 6 components
Hall vs IR — comparison lab wiring diagram

What you'll learn

  • Identify the difference between magnetic and optical sensing methods.
  • Understand why Hall sensors are immune to dust and light interference compared to IR.
  • Implement a universal digital sensor test circuit using Arduino.

What's in the kit

  • Arduino Uno
  • Digital Hall Effect Sensor (KY-003 or similar)
  • IR Proximity Sensor (TCRT5000 or similar)
  • Strong Neodymium Magnet
  • Breadboard
  • Jumper Wires (M-to-M)×5

Protocol: digital