Project 19 · Sensor Catalog (Vol III)

Contactless Liquid-Level Sensor

Detect liquid levels through solid containers without ever getting the sensor wet!

Starter 20 min 5 components
Contactless Liquid-Level Sensor wiring diagram

What you'll learn

  • Explain how capacitive sensing allows for detection through non-metallic barriers.
  • Differentiate between contact-based and contactless sensing methods.
  • Interface a digital-output sensor with an Arduino microcontroller.
  • Program a basic threshold-based alert system for liquid monitoring.

What's in the kit

  • Arduino Uno R3
  • Contactless Liquid Level Sensor (XKC-Y25)
  • Jumper Wires (M-to-F)×3
  • Breadboard (Small)
  • USB Cable (A-to-B)

Protocol: digital