int ledMerahPin = 2;
int ledKuningPin = 4;
int ledHijauPin = 5;
int potensioPin = 34;
int buzzerPin = 15; // Pin buzzer
int val = 0;

void setup() {
  Serial.begin(9600);
  pinMode(ledMerahPin, OUTPUT);
  pinMode(ledKuningPin, OUTPUT);
  pinMode(ledHijauPin, OUTPUT);
  pinMode(buzzerPin, OUTPUT); // Inisialisasi pin buzzer sebagai output
}

void loop(){
  val = analogRead(potensioPin);
  Serial.println(val);
  
  if (val >= 0 && val <= 128) {
    digitalWrite(ledMerahPin, HIGH);
    digitalWrite(ledKuningPin, LOW);
    digitalWrite(ledHijauPin, LOW);
    digitalWrite(buzzerPin, LOW); // Matikan buzzer
  } else if (val > 128 && val <= 191) {
    digitalWrite(ledMerahPin, LOW);
    digitalWrite(ledKuningPin, HIGH);
    digitalWrite(ledHijauPin, LOW);
    digitalWrite(buzzerPin, LOW); // Matikan buzzer
  } else if (val > 191 && val <= 200) {
    digitalWrite(ledMerahPin, LOW);
    digitalWrite(ledKuningPin, LOW);
    digitalWrite(ledHijauPin, HIGH);
    digitalWrite(buzzerPin, LOW); // Matikan buzzer
  } else if (val > 200) {
    digitalWrite(ledMerahPin, HIGH);
    digitalWrite(ledKuningPin, LOW);
    digitalWrite(ledHijauPin, LOW);
    tone(buzzerPin, 400); // Aktifkan buzzer dengan frekuensi 400Hz
  }
}

//Kamis/21/Maret/2023
//Nama  : Anindya Tara Danendra Alamsyah
//Nim   : 202123021