const int LED_PIN = 7;

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

void loop() {
  // put your main code here, to run repeatedly:
  digitalWrite(LED_BUILTIN, HIGH);
  delay(1000); // this speeds up the simulation
  digitalWrite(LED_PIN, HIGH);
  delay(1000); // this speeds up the simulation
  digitalWrite(LED_PIN, LOW);
  delay(1000); // this speeds up the simulation
}