int led_pin = 5;
void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  pinMode(led_pin,OUTPUT);
  Serial.println("Inicinado..");
}

void loop() {
  delay(10); 
  digitalWrite(led_pin, HIGH);
  delay(1000);
  digitalWrite(led_pin, LOW);
}