hacer un sirena de un patrulla
void sirena_patrulla() { analogWrite(5, 0); analogWrite(6, 0); analogWrite(9, 0); analogWrite(10, 0); analogWrite(11, 0); analogWrite(3, 500); delay(500); analogWrite(5, 0); analogWrite(6, 0); analogWrite(9, 0); analogWrite(10, 0); analogWrite(11, 0); analogWrite(3, 0); delay(500); analogWrite(5, 255); analogWrite(6, 255); analogWrite(9, 0); analogWrite(10, 0); analogWrite(11, 0); delay(500); analogWrite(5, 0); analogWrite(6, 0); analogWrite(9, 0); analogWrite(10, 0); analogWrite(11, 0); delay(500); analogWrite(5, 0); analogWrite(6