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water-level-sensor-en.md

Splash Detection: The Arduino Water Sensor

The Water Level Sensor is a rugged and useful tool for any maker interested in home automation or ecology. It’s designed to detect everything from a few drops of rain to the depth of a water container.

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How It Works

The sensor has a series of exposed copper traces. When water touches these traces, it acts as a conductor, completing a circuit and changing the resistance between the power and signal pins. The Arduino reads this change as an analog value (0-1023).

  • Dry: Low conductivity, high resistance.
  • Wet: High conductivity, low resistance (higher analog value).

Typical Uses

  • Rain Alarm: Placing the sensor outside to notify you when it starts raining.
  • Leak Detector: Placing it under a kitchen sink or washing machine to alert you to leaks.
  • Auto-Fill Systems: Measuring the level in a pet bowl or a plant reservoir.

Hardware Components

  • Arduino Uno/Nano: To read the analog signals.
  • Water Level Sensor Module: The primary hardware.
  • Piezo Buzzer: For audio alerts.
  • LEDs: For visual status monitoring.

It’s a simple but vital project that helps protect your home from water damage through the power of affordable electronics.

ข้อมูล Frontmatter ดั้งเดิม 

title: "Water Level Sensor Basics"
description: "Detect moisture and leaks instantly! Learn how to use a standard water level sensor with Arduino to monitor rainfall or tank levels."
category: "Sensors & Environment"
difficulty: "Easy"