This is fantastic! Just in time for 303 day too!
Some feedback for future updates:
* The first thing I tried to do was use it with the filter input on my 303 clone but unfortunately the highest midi note it outputs isn't in range for the cart, I wish I had some way to offset the note range...
* It would also be nice if there was a faster way to turn the virtual knobs, maybe by holding down a button while tweaking the D-Pad? (Tho tbh I probably should just be using a midi controller with mappable knobs, so glad to see everything is controllable)
* The DUR/SPD/OFF menu from a UX standpoint- I know there's limited real estate, but the fact that it's in the middle of two knobs and directionally different from the rest of the controls throws me for a loop mid performance. Maybe it could be squeezed in as a horizontal menu between Pan and Portamento?
Thanks for putting this together though I've been dying for it!