const int ledPin = 2;

void setup() {
 
  pinMode(ledPin, OUTPUT);
}

void loop() {

  for (int i = 0; i < 10; i++) {
    
    digitalWrite(ledPin, HIGH);
    //Serial.println("led is on");
    delay(500); 
    
    digitalWrite(ledPin, LOW);
    //Serial.println("led is off");
    delay(500); 
  }

  
  while (true) {
   
  }
}