int ledrojo =9;
int ledamarillo =8;


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

}

void loop() {
 for (int i = 0; i < 2; i++) {
    digitalWrite(ledrojo, HIGH);
    delay(250); // Encendido 250 ms
    digitalWrite(ledrojo, LOW);
    delay(250); // Apagado 250 ms

  // put your main code here, to run repeatedly:

}
digitalWrite(ledamarillo, HIGH);
  delay(500); // Encendido 500 ms
  digitalWrite(ledamarillo, LOW);
  delay(500); // Apagado 500 ms

}