void setup() {
  pinMode(23,INPUT_PULLUP);
  pinMode(22,INPUT_PULLUP);
  pinMode(4,OUTPUT);
  Serial.begin(9600);
  }
  void loop(){
    int p1 = digitalRead(23);
    int p2= digitalRead(22);

    if(p1 == LOW){
      digitalWrite(4,HIGH);
      Serial.println("led encendido");
      delay(200);
    }
    if(p2 ==LOW){
      digitalWrite(4,LOW);
      Serial.println("led apagado");
      delay(200);
    }
  }