I have unsuccessfully tried to build a modified version of LED roulette wheel. My problem is that I need to have only 18 LEDs on the board (most project kits have either 36 or 8) and be able to either switch that number of LEDs to 14 or have two separate circuits that would accomplish this goal. I know that this is a very simple circuit but I am running out of both time and patience. Someone can make some coin here if they can help me out.