bool y = 0;



void setup() {
  pinMode(10, INPUT_PULLUP);
  pinMode(LED_BUILTIN, OUTPUT);
  Serial.begin(115200);
  Serial.println("HEllo world");
  
}

void loop() {
  
  y = digitalRead(10);
  Serial.println(y);
  if (y == 0){

    digitalWrite(LED_BUILTIN, HIGH);
  }
  else {
      digitalWrite(LED_BUILTIN, LOW);

  }


}