VU Meter Project 2014

int led[12] = { 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13};
int leftChannel = 0;
int left;
int i;


void setup()

{
for (i = 0; i < 12; i++)
  {
  pinMode(led[i], OUTPUT);
  }
}


void loop()
{
left = analogRead(leftChannel);


left = left / 40;


  if (left == 0)
 {
   for(i = 0; i < 12; i++)
     {
     digitalWrite(led[i], LOW);
     }
  }


  else

  {
   for (i = 0; i < left; i++)
    {
     digitalWrite(led[i], HIGH);
    }

    for(i = i; i < 12; i++)
     {
      digitalWrite(led[i], LOW);
     }
  }
}