void setup() {
  Serial.begin(9600);
  pinMode(13, OUTPUT);
  pinMode(2, OUTPUT);
  digitalWrite(13,OUTPUT);
  digitalWrite(2, LOW);
  delay(1000);
}

void loop() {
  Serial.println("led:no");
  digitalWrite(2, HIGH);
  digitalWrite(13, LOW);
  delay(1000);
  Serial.println("led: OFF");
  digitalWrite(2, LOW);
  digitalWrite(13, HIGH);
  delay(1000);
  }