/*For Loop Iteration
 Demonstrates the use of a for() loop. 
 Lights multiple LEDs in sequence, then in reverse.
 The circuit:* LEDs from pins 2 through 7 to ground
 created 2006 by David A. Mellis
 modified 30 Aug 2011 by Tom Igoe 
 This example code is in the public domain.
 http://www.arduino.cc/en/Tutorial/ForLoop
 */

int timer = 200;                                                // The higher the number, the slower the timing.

void setup() {
                                                                // use a for loop to initialize each pin as an output:
  for (int thisPin = 2; thisPin < 8; thisPin++)  {
    pinMode(thisPin, OUTPUT);      
  }
}

void loop() {
                                                                // loop from the lowest pin to the highest:
  for (int thisPin = 2; thisPin < 10; thisPin++) { 
    digitalWrite(thisPin, HIGH);                                // turn the pin on:  
    delay(timer);                  
    digitalWrite(thisPin, LOW);                                 // turn the pin off:   
  }
 }