hoodie-blink.ino

/* Arduino Example 01 - Blinking LED
 * Modified for an 8-LED hoodie
 * 
 * More info at http://johnkeefe.net/making-a-heartbeat-hoodie
 * (This is Part I, without the heartbeat detector)
 * 
 * John Keefe
 * john@johnkeefe.net
 */

// LEDs use pins A3 A4 A5 5 6 9 10 A2

// set up an array for all of the LED pins
int light[] = {A3, A4, A5, 5, 6, 9, 10, A2};

// this code runs once
void setup() {

  for (int x = 0; x < 9; x++) {
    pinMode(light[x], OUTPUT); // Set each pin as output
  }

}

// this loop repeats forever
void loop() {

  // turn each LED on in sequence
  // from bottom to top
  for (int y = 0; y < 8; y++) {
    digitalWrite(light[y], HIGH); // turns LED on
    delay(100);             // waits for 1/10 second
  }
  
   // turn each LED off in reverse order 
   for (int z = 0; z < 8; z++) {
    digitalWrite(light[7-z], LOW); // turns LED on
    delay(100);             // waits for 1 second
  }

}