void setup() {
  Serial.begin(115200);
  pinMode(2, OUTPUT); // prepare pin 5 as an output

}

void loop() {
  digitalWrite(5, HIGH); // turn LED ON
  delay(1000);           // wait 1 second
  digitalWrite(5, LOW);  // turn LED OFF
  delay(1000);           // wait 1 second

  // put your main code here, to run repeatedly:
  
}