Interfacing Soil Moisture sensor with Arduino
Soil Moisture sensor is used to determine the moisture in the soil, this sensor is specially used for agriculture purpose.
The pins are already mentioned on the backside of the module. It contains 4 pins and a potentiometer.
Interface the sensor with any microcontroller using the Analog-to-Digital converter (ADC) Pin or A0, or connect the digital pin (D0) of the sensor to any digital pin of a microcontroller.
The threshold for digital pin can be set by using potentiometer available in the module.
Connections using Analog Pin A0:
| Pins on Soil Moisture Module | Arduino UNO/ Mega |
| VCC | 5V |
| GND | GND |
| D0 | |
| A0 | A1 |
Arduino Code:
void setup() {
Serial.begin(9600);
}
void loop() {
Serial.println(analogRead(A1));
delay(500);
}
Results/ Output:
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