ArduinoLED.ino

int sPin = 2;   // The base pin ID
int nLEDs = 10; // The number of LEDs
int delayMS = 100;

void setup()
{
  for (int i = sPin; i < sPin + nLEDs; i++) 
  {
    pinMode(i, OUTPUT);   
  }
}

void loop()
{
  for(int i = sPin; i < sPin + nLEDs; i++) 
  {
    digitalWrite(i, LOW);
    delay(delayMS);
  }

  for(int i = sPin; i < sPin + nLEDs; i++) 
  {
    digitalWrite(i, HIGH);
    delay(delayMS);
  }

}