int button = 13;
int nilaitombol;
int led = 12;

void setup() {
  
  pinMode(button, INPUT);
  pinMode(led, OUTPUT);
  }

  void loop() {
    // put your main code here, to run repeatedly:
    nilaitombol = digitalRead(button);

    if (nilaitombol == HIGH) { 
      digitalWrite(led, HIGH);
      delay(200);
      digitalWrite(led, LOW);
      delay(200);
      }else{
        digitalWrite(led, LOW);
    }
    }