Soil Moisture Sensor

/*
 * https://arduspot.blogspot.in/p/soil-moisture-sensor.html
 */
int soil = A3;
int s;

void setup()
{
  pinMode(soil,INPUT);
  Serial.begin(9600);
}

void loop()
{
  s = analogRead(soil);
  Serial.println(s);
  delay(1000);
}