int valor=0;
int i=0;
float media=0;

void setup() {
  // put your setup code here, to run once:



  Serial.begin(9600);
  Serial.println("Hola mundo");

}

void loop() {
  // put your main code here, to run repeatedly:

  
  valor = valor + 1;
  if (valor > 20)
  {
    valor = 0;


  }
  

  Serial.print(valor);
  Serial.println(" segundos");
  delay(1000);

}