// Basic program to turn on / off LEDs
// Written by Phil Gunnewiek - www.gunnewiek.com

int ledPin = 12;

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

void loop()
{
  turnOnLED(ledPin);
  delay(1000); // Don't do anything for 1 second
  turnOffLED(ledPin);
  delay(1000); // Don't do anything for 1 second
}

void turnOnLED(int pinNumber)
{
  digitalWrite(pinNumber, HIGH);
}

void turnOffLED(int pinNumber)
{
  digitalWrite(pinNumber, LOW);
}