int led= 3;


void setup() {
  // put your setup code here, to run once:
  pinMode(LED_BUILTIN,OUTPUT);
  pinMode(led, OUTPUT);

}

void loop() {
  // put your main code here, to run repeatedly:
  digitalWrite(LED_BUILTIN, HIGH);
  delay(400);
  digitalWrite(LED_BUILTIN, LOW);
  delay(300);
  digitalWrite(led, HIGH);

}