LED Project

This LED project makes the lights light up to the end and then reverse when the button is pushed.


int ledPins[] = {2,3,4,5,6,7,8,9};
const int button1Pin = 10;

void setup()
{
  pinMode(button1Pin, INPUT);
 
  int index;

  for(index = 0; index <= 7; index++)
  {
    pinMode(ledPins[index],OUTPUT);
  }
}

void loop()
{
  int button1State = digitalRead(button1Pin);
 
   if (button1State == HIGH)
   {
     oneAfterAnotherLoop();  // Light up all the LEDs in turn
   }
   else
   {
     turnOff();
   }
}

void oneAfterAnotherLoop()
{
  int index;
  int delayTime = 100; // milliseconds to pause between LEDs
 
  for(index = 0; index <= 7; index++)
  {
    digitalWrite(ledPins[index], HIGH);
    delay(delayTime);              
  }                                

  for(index = 7; index >= 0; index--)
  {
    digitalWrite(ledPins[index], LOW);
    delay(delayTime);
  }              
}

void turnOff()
{
  digitalWrite(ledPins[7], LOW);   //Turn off LED #7
  digitalWrite(ledPins[6], LOW);   //Turn off LED #6
  digitalWrite(ledPins[5], LOW);   //Turn off LED #5
  digitalWrite(ledPins[4], LOW);   //Turn off LED #4
  digitalWrite(ledPins[3], LOW);   //Turn off LED #3
  digitalWrite(ledPins[2], LOW);   //Turn off LED #2
  digitalWrite(ledPins[1], LOW);   //Turn off LED #1
  digitalWrite(ledPins[0], LOW);   //Turn off LED #0
}

Useful Sites - Part 1

http://arduino.cc/en/Guide/Environment

http://processing.org/reference/environment/

http://fritzing.org/developer/fritzing-part-format/

http://2013embedded.blogspot.co.nz/

http://gcc.gnu.org/