int ledR = 1;

void setup()
{
  Serial.begin(9600);
  pinMode(ledR, OUTPUT);
}

void loop()
{
  Serial.println("Hello, world!"); //send 'Hello, world!' over the serial port
  digitalWrite(ledR, HIGH);   // turn the LED Red on
  delay(200);
  digitalWrite(ledR, LOW);   // turn the LED Red off
  delay(200);
}