void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
pinMode(18, OUTPUT);
pinMode(27, OUTPUT);
}

void loop() 
  {
  digitalWrite(18,HIGH);
  delay(10);
  digitalWrite(18, LOW);
  delay(10);
  digitalWrite(27,HIGH);
  delay(10);
  digitalWrite(27,LOW);
  delay(10);
  // put your main code here, to run repeatedly:
 // this speeds up the simulation
}