This soil moisture sensor Arduino compatible can be used to detect the moisture levels of the soil. When the soil is dry, the sensor's output analog value will decrease, while moist soil will result in an increased analog value output. A key application for this sensor is for an automatic watering device. The sensor can sense whether your plant is thirsty or not, preventing over- or under-watering.

The Arduino compatible soil moisture sensor surface is made from metal to extend its life. Insert it into the soil, then read it using an AD converter.

Test Code

/ *
# Example code for the moisture sensor
# Connect the sensor to the A0 (Analog 0) pin on the board

# The sensor value description
# 0 ~ 300 dry soil
# 300 ~ 700 humid soil
# 700 ~ 950 in water
* /

void setup() {
Serial.begin (57600);
}

void loop() {
Serial.print("Moisture Sensor Value:");
Serial.println(analogRead(0));
delay(100);
}