Detect Rain with Rain Sensor Module

Objective

This experiment uses a rain sensor module to detect the presence of rain.

Required Components

• Rain Sensor Module
• Arduino Board (e.g., Arduino Uno)
• Jumper wires
• Breadboard

Working Principle

The rain sensor detects rain by measuring the change in resistance when water falls on the sensor’s surface.

Circuit Diagram

Arduino Code

/*
 * Detect Rain with Rain Sensor Module
 * This code reads the rain sensor data and prints the result.
 */

const int rainPin = 2;  // Rain sensor connected to digital pin 2
int rainState = 0;

void setup() {
    pinMode(rainPin, INPUT);
    Serial.begin(9600);  // Initialize serial communication
}

void loop() {
    rainState = digitalRead(rainPin);  // Read the sensor value
    if (rainState == HIGH) {
        Serial.println("Rain Detected");
    } else {
        Serial.println("No Rain");
    }
    delay(1000);  // Wait for 1 second before the next reading
}
            

Results

The serial monitor will display either "Rain Detected" or "No Rain" based on the sensor's input.

Applications

• Weather monitoring systems
• Smart irrigation systems
• Rainwater harvesting systems

Conclusion

The rain sensor module provides a simple and effective way to detect rain, making it useful for weather monitoring and smart irrigation systems.