water_sensor.ino

void setup() {
  Serial.begin(9600);
  pinMode(3, INPUT);
}

void loop() {
  int sensorValue = analogRead(A0);
  Serial.print(sensorValue);
  Serial.print(" ");
  if (sensorValue > 1000) {
    Serial.println("VERY DRY");
    digitalWrite(3, HIGH);
    digitalWrite(4, HIGH);
    digitalWrite(5, HIGH);
  } else if (sensorValue <= 1000 && sensorValue > 800) {
    Serial.println("DRY");
    digitalWrite(3, LOW);
    digitalWrite(4, HIGH);
    digitalWrite(5, HIGH);
  } else if (sensorValue <= 800 && sensorValue > 600) {
    Serial.println("LITTLE BIT DRY");
    digitalWrite(3, LOW);
    digitalWrite(4, LOW);
    digitalWrite(5, HIGH);
  } else {
    Serial.println("OK");
    digitalWrite(3, LOW);
    digitalWrite(4, LOW);
    digitalWrite(5, LOW);
  }
  delay(500);
}