Project 18 · Sensor Catalog (Vol III)

Water Level Sensor

Build a liquid depth monitor that uses the conductivity of water to measure fill levels in real-time.

Starter 20 min 5 components
Water Level Sensor wiring diagram

What you'll learn

  • Understand how resistance changes when water bridges an open circuit.
  • Be able to convert environmental depth into a 10-bit digital value using an Analog-to-Digital Converter (ADC).
  • Differentiate between digital (on/off) and analog (variable) sensing in fluid dynamics.

What's in the kit

  • Arduino UNO R3/Compatible
  • Water Level Sensor Module
  • Jumper Wires (Male-to-Female)×3
  • USB Cable (Type A to B)
  • A small container of water (for testing)

Protocol: analog