int LED=2;
void setup() {
  // put your setup code here, to run once:
pinMode(LED,OUTPUT);
}

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