void setup() {
  // put your setup code here, to run once:
  pinMode(8,OUTPUT);
  delay(1000);
  Serial.begin(9600);

}

void loop() {
  // put your main code here, to run repeatedly:
  while(true)
  {
    digitalWrite(8,HIGH);

    Serial.println("YES");
    delay(1000);
    digitalWrite(8,LOW);
    delay(1000);
  }

}