const int ledPin = 8;
const int buttonPin = 4;
int pressCount = 0;

void setup() {
  pinMode(ledPin, OUTPUT);
  Serial.begin(9600);
  pinMode(buttonPin, INPUT_PULLUP);
}

void loop() {
  static bool buttonPressed = false;
  static unsigned long lastDebounceTime = 0;
  unsigned long debounceDelay = 500;

  int buttonState = digitalRead(buttonPin);

  if (buttonState == LOW && !buttonPressed && (millis() - lastDebounceTime > debounceDelay)) {
    buttonPressed = true;
    lastDebounceTime = millis();
    pressCount++;
    Serial.print("Button is pressed, press count: ");
    Serial.println(pressCount);

    if (pressCount == 3) {
      digitalWrite(ledPin, HIGH);
      Serial.println("LED ON");

      delay(2000);
      digitalWrite(ledPin, LOW);

      pressCount = 0;
    }
  }

  if (buttonState == HIGH && buttonPressed) {
    buttonPressed = false;
  }
}