const int buzzer_pin = 12;
const int button1_pin = 14;
unsigned long time_db = 0UL;
bool debounce = false;
bool buzz = false;

void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  pinMode(button1_pin, INPUT_PULLUP);
  pinMode(buzzer_pin,OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
  if (millis() - time_db > 200){
    time_db = millis();
    debounce = true;
  }

  if (digitalRead(button1_pin) == LOW && debounce == true){
    debounce = false;
    buzz = !buzz;
  }

  if (buzz) {
    digitalWrite(buzzer_pin, HIGH);
    Serial.println("On");
  }
  else {
    digitalWrite(buzzer_pin, LOW);
    Serial.println("Off");
  }
}