Would it work to use a transistor, With say a R/C circuit on the gate? use a Pot to vary the charge time of the capacitor. And the charge voltage of the cap determines the gate signal of the Transistor? maybe a Mosfet instead of transistor? It's been to long since I fooled with electronics. Mostly 600-4160V now I play with
Edit, I found a site with a WHACKLOAD of different schematics
http://ourworld.compuserve.com/homep...epage.htm#menu
I'm looking at the Fading red eyes one right now.
Ohhhh, check out the
Automobile Interior Lights Fader