[TimMiller]

have you tried mouser and digikey for motorized faders? What you may want to look into is getting the entec USB to DMX converter to run ChamSys. The BCF2000 actually has USB control, it works like an external fader wing. I'm sure you can make it work with the ChamSys. So you have a motorized fader wing and DMX output. Now if you would like to go for a more DIY, you have to build your own USB to DMX converter, then you will have to draw out your schematic of how you are going to build your fader wing and control the faders. I hope you are familiar with writing and burning EPROMS (if you do not have one an EPROM burner will run you around 100) and it will not be cheap if you have to get someone to write the code for you (around 700). You will have to do some searching and learn how to program the software so that x resistance is x dmx value. Plus be able to patch to different outputs. The processor would then recall the dmx value and based on the resistance of the fader, will move the fader to the appropriate place, unless you have faders using encoders which are commonly used, and then the console counts to that particular tick mark, so inside of the console, you will have to intigrate stepper motor control. Good luck.