LED Direction-Guided Help

Hi,

I'm currently working on a research project, and for my study, I basically want to use a number of LED blinking lights in a circle. Based on a hand-crank sort of mechanism, I want a LED light to light up when the hand-crank is pointed towards that direction in the circle. Essentially, it would basically be like someone is turning the hand of a clock, and the LED lights up when the hand is pointed towards a certain number, or LED in this case. If anyone has any advice on how to go about this, it would be much appreciated.

Thanks!

Twelve position rotary switch.

Put a small magnet under the crank and put appropriately spaced Hall effect switches in a circle underneath.

A potentiometer that can turn through 360 degrees (or more) and map the value returned by analogRead() of the pot to the LED to be turned on.