I'm planning to create my very won CYM Color mixer. Right now the plan is to use a Northlight 8 Channel DMX Servo Controller (available here: DMX512 to RC servo controller.) to control two servers hooked up to gearboxes, which are in turn attached to rotating drums which will hold the gel strings. The level of the dimmer that the Northlight chip is adressed to controls where the servo is positioned, two dimmer levels will control the position of both gel strings. So the idea is that for each 90 or 180 degree turn of the servo, the gearboxes will rotate the drums around 25 times, scrolling through each entire gel string, all based on the level of the dimmer. This is my summer project and I hope to get started on it early May. I might order the Northlight chip now. Ideas, tips, suggestions?