const int buttonPin = 2;
const int LEDPin = 26;

int Ledstate = LOW;
int lastButtonState; 
int currentButtonstate;


void setup() {
  Serial.begin(9600);
  pinMode( buttonPin, INPUT_PULLUP);
  pinMode(LEDPin, OUTPUT);
  currentButtonstate = digitalRead(buttonPin);
}

void loop() {
  lastButtonState = currentButtonstate; 
  currentButtonstate = digitalRead(buttonPin);

  if(lastButtonState == HIGH && currentButtonstate == LOW) {
    Serial.println("Tombol ditekan");
    Ledstate =!Ledstate;
    digitalWrite(LEDPin,Ledstate);
  }
  delay(100); // this speeds up the simulation
}