#define ledMerah 13
#define ledKuning 12
#define ledHijau 11
#define spiker 2

#define pot A0
  
void setup() {
 pinMode(ledMerah, OUTPUT);
  pinMode(ledKuning, OUTPUT);
  pinMode(ledHijau, OUTPUT);
  Serial.begin(9600);
}
 
void loop() { 
  int nilaiPot = analogRead(pot);
  if (nilaiPot <= 200){
    digitalWrite(ledMerah, 1);
    digitalWrite(ledKuning, 0);
    digitalWrite(ledHijau, 0);
    digitalWrite(spiker, HIGH);
  }else if ((nilaiPot > 200) && (nilaiPot <= 400)){
    digitalWrite(ledMerah, 0);
    digitalWrite(ledKuning, 1);
    digitalWrite(ledHijau, 0);
    digitalWrite(spiker, LOW);
  }else{
    digitalWrite(ledMerah, 0);
    digitalWrite(ledKuning, 0);
    digitalWrite(ledHijau, 1);
    digitalWrite(spiker, LOW);
  }
  Serial.println(nilaiPot);
}