#define ledMerah 12
#define ledBiru 11
#define potentiometer A1
#define buzzer 8
int sensorNilai = 0;

void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);
  pinMode(ledMerah, OUTPUT);
  pinMode(buzzer, OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
  sensorNilai = analogRead( potentiometer) ;
  if(sensorNilai >= 400){
    digitalWrite(ledMerah , LOW);
    digitalWrite(ledBiru, LOW);
    tone(buzzer, 12000);
  }else{
    digitalWrite(ledMerah, HIGH);
    digitalWrite(ledBiru, HIGH);
    noTone(buzzer);
  }
  delay(sensorNilai);
  
  if(sensorNilai >= 400){
    Serial.println("bahaya");
  }else{
    Serial.println("normal");
  }
   
}