I just modded Nick Montoya’s Mini to have voltage controlled mod wheel colors.
The colors can change with any control voltage provided whether the keyboard, a vco, env or whatever.
It can do blue, red, green, aqua, purple, pink, orange, white, yellow and several others.
Not sure what to hook it up to though because I don’t want to drill it up for controls.
Here’s a video:
Trippy 
Could you use Osc 3 set to PWM? 
Thanks.
After posting this, I decided what to do.
Yeah, I’m going to take osc 3, but I’m going to make its audio switch only control the lights when it’s off.
That way it gets used mostly for at low freq rates, but allows the volume control to still work allowing different colors.
It’s easy to know your vibrato speed when your wheels are flashing the same rate.
Nice one!
I did a somewhat similar Voyager mod for somebody one time, by running the LFO CV to the mod-wheel LED. It was neat to see exactly what the LFO was doing by looking at the mod wheel. Your RGB color mixing takes it over the top.
Thanks Amos.
These types of leds will be pretty common as the price drops.
I can envision keyboards in the near future having software settings for these R,G,B values.
You’d change a preset and the wheels or panel could change to the mood you were in or the right color setting for the song you’re playing on-stage.
I’d prefer “take your retina out” blue leds if I was playing in the sun, but something much softer on the eyes at night.
Cool on doing it with a Voyager, but I can’t drive these directly from the LFO at the brightness I’d prefer.
There’s actually 6 leds total and it takes too much current.
The board I added to Nick’s has it’s own +5 volt regulator and takes the +23 volt pre-regulated voltage from the model D.
This allows it to light up to 6 leds at the same time, but not “bump” the pitch of the synth at all.
Maybe you could make a Voyager change colors with a midi in signal.
If the wheels change, you know it’s receiving.
Kevin, please check your PMs.
thats Brilliant! wish i had a voyager… 
Oh that’s a trip.
Now make the LED under each wheel reverse phase. When one is blue, the other is yellow. Pulsating at LFO rates would be eye candy.
Hmmmm, my Voyager sig is out of warranty…
Don’t you guys just love Kevin’s crazy “Lightner” LED mods…
I sent Kevin my mini a few months back for its “5 year” tune up… Kevin has been inside there before and is obviously the only one I trust in there. He did the original mod for the wheels which was just blue wheels like the Voyager.
After 5 years of my unintended Mini abuse (touring, gigging locally 5 times per month for the past 5 years) I figured it was time to send it in for a general tune up. Funny that the main problem (from what I can tell) was directly attributed to the Volt/Octave scale… Plus tons of other work that needed to be done.
I told Kevin, “do something crazy with the lights” and of course he didn’t disappoint.. He did a similar mod years ago and it was even featured in Keyboard Magazine as “Keyboard of the month” !!!
I am very, very fortunate to be good friends with Kevin! Truly the best synthtech a vintage Mini could ever get !!! Something about his magical dome in woods adds an element of greatness to each project that leaves it’s doors!
Thanks yall..
P.S… We are putting the finishing touches (so to speak) on our third “The Volt per Octaves” album. We are very excited to have worked with two of our favorite musicians of all time, Brian Kehew (on Mellotron and Chamberlin) and Justin Meldal-Johnsen (on Bass guitar and Crazy Bass madness) … It will also feature some RARE Baldwin Synthasound tracks!!! I’ll keep you posted..(this is the first official mention of the record at all)