I have given some thought to a lighthouse project. What I had in mind to do was to have the lighthouse have 4 curved faces. Each face would have 3 leds in a row. The first led being a warm white led ramping up to full power followed by the middle, high intensity led flashing then the third, warm white led ramping down. The next face's 'first' warm white led would start it's ramp up while the previous face's 'third' warm white led is ramping down. All this done via a TLC5940 and a 328P micro controller.
Would look cool on top of this, eh?
- Scotty