Rain / Moisture Sensor

Detect moisture in soil or rain drops with this Rain / Moisture Sensor. This sensor works by measuring the varying resistance when the rectangular plate is in contact with water such as when embedded in moist soil.

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Features:

Detect the amount of moisture in soil or rain droplets on the sensor plate
Insert the sensor plate into the sand, soil or other material
Arduino & Raspberry Pi compatible

Pinout	Description
VCC	+5 Volts Power Source
GND	Ground or negative power source
DO	Digital Output. Goes low when moisture exceeds set threshold.
A0	Analog Output - Zero to five volts. The lower the voltage, the greater the moisture.
Power LED	Indicates that power is applied
Output LED	Illuminates when moisture has exceeded threshold set by sensitivity adjustment.
Sensitivity Adjustment	Clockwise is more sensitive. Counterclockwise is less sensitive.

Arduino Sample Code:

/*
Connection:

Sensor A0 => Arduino A0

VCC => Arduino 5V

GND => Arduino Ground
*/

int sensorPin = A0; // select the input pin for the moisture sensor
int sensorValue = 0; // variable to store the value coming from the sensor

void setup() {

Serial.begin(9600);
}

void loop() {
// read the value from the sensor:
sensorValue = analogRead(sensorPin);
//Print the sensor value to Serial Monitor
Serial.println(sensorValue);
// wait 5 seconds between readings
delay(5000);
}

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