const int BUTTON = 14;
const int LED = 13;
int lastState = HIGH;

void setup() {
  Serial.begin(115200);
  pinMode(BUTTON, INPUT_PULLUP);
  pinMode(LED, OUTPUT);
  digitalWrite(LED, LOW);
}

void loop() {
  int currentState = digitalRead(BUTTON);
  if (currentState != lastState) {
    lastState = currentState;
    if (currentState == LOW) {
      Serial.println("нажата");
      digitalWrite(LED, HIGH);
    } else {
      Serial.println("отпущена");
      digitalWrite(LED, LOW);
    }
  }
  delay(50);
}