Sequential Lights Arduino

sequentialLights.ino

/**
  silvio paganini | s2paganini.com
  @silviopaganini
**/

const int pins[] = {11, 10, 9, 6, 5, 3};
int SIZE = 6;

void setup()
{
  Serial.begin(9600);
  setPinMode();
}

void loop()
{
  int p = analogRead(0);
  int a = 1023 / SIZE;

  for(int i = 0; i<SIZE; i++)
  {
    int l = (a * (i + 1)) - p;
    
    if(l < 0) l = 0;
    if(l > 255) l = 255;

    analogWrite(pins[i], l);
  }
}

void setPinMode()
{
  for(int i = 0; i<SIZE; i++)
  {
    pinMode(pins[i], OUTPUT);
  }
}