// put your setup code here, to run once:
 void setup() {
  // put your setup code here, to run once:
 pinMode(12, OUTPUT);
}



void loop() {
  // put your main code here, to run repeatedly:
digitalWrite(12, HIGH); // turn the LED on
  delay(500);             // wait for 500 milliseconds
  digitalWrite(12, LOW);  // turn the LED off
  delay(500);             // wait for 500 milliseconds
}