Drukknop

const int buttonPin = 2;

void setup() {
  pinMode(buttonPin, INPUT_PULLUP);
  Serial.begin(9600);
  while (!Serial) {
    ;
  }
  Serial.println("Drukknop example started. Press the button to connect the input to GND.");
}

void loop() {
  int buttonState = digitalRead(buttonPin);

  if (buttonState == LOW) {
    Serial.println("Button pressed");
  } else {
    Serial.println("Button released");
  }

  delay(200);
}