int buttonPin = 3;
int ledPin = 2;
int buttonState = 0; // variabel status switch

int lastButtonState = 0;
int buttonPushCounter = 0;

void setup() {
  pinMode(buttonPin, INPUT);
  pinMode(ledPin, OUTPUT);

}

void loop() {
  buttonState = digitalRead(buttonPin);  // membaca nilai tombol tekan 
 
  // if(buttonState == 1){
  //   digitalWrite(ledPin, LOW);
  // } else {
  //   digitalWrite(ledPin, HIGH);}

  if(buttonState != lastButtonState){    // jika nilai sekarang tidak sama dengan niai terakhir
    if(buttonState == 1){
      buttonPushCounter++;
    }} 
  lastButtonState = buttonState;
  if(buttonPushCounter % 2 == 0){
    digitalWrite(ledPin, 1);
  }else{
    digitalWrite(ledPin, 0);
  }
}