p45-liquid-level-arduino.ino

/*
 * AJ Alves ([email protected])
*/
#define SENSOR_PIN 2 // Arduino pin that will read the sensor state

void setup() {
  Serial.begin(9600); // Setup Serial Port
  pinMode(SENSOR_PIN, INPUT); // Set pin as INPUT
}

void loop() {
  int state = digitalRead(SENSOR_PIN);
  if (state == HIGH) {
    Serial.println("The barrel is FULL");
  } else {
    Serial.println("No signal from sensor! It is emptying!");
  }
  delay(1000); // Wait 1 second
}