void setup() {
  // put your setup code here, to run once:
  pinMode(10, OUTPUT); //rojo
  pinMode(9, OUTPUT); //amarillo
  pinMode(8, OUTPUT); //verde
}

void loop() {
  // put your main code here, to run repeatedly:
  //verde
  digitalWrite(8, HIGH);
  delay(2500);
  digitalWrite(8, LOW);

  //amarillo
  digitalWrite(9, HIGH);
  delay(1500);
  digitalWrite(9, LOW);

  //rojo
  digitalWrite(10, HIGH);
  delay(3000);
  digitalWrite(10, LOW);

}