With this shield setup,there will be two unused pots.
Arduino has 6 analogue ins. Auduino currently uses five of them. One spare at the moment - Analog 5.
I am interested in what you think would be a cool function to add to the board. I was think 2 second volume envelopes that would each control one oscillator. How hard would this be to implement
Anything is possible. The main constraints you have are:
- Does it sound good? Its important to not go too far down the design route until you know something is worth doing. Synthesisers are tricky to predict. Try things out as you go.
- Timing constraints. The sample calculating algorithm triggers every 32µs, and takes around 16µs to run. Implementing MIDI reception might be a problem, as the Arduino serial routines have a lot of overhead.
- Pin constraints - the first one you'll hit is only having 1 free analogue in.
I may be able to help with small things, but I've got a new project that's taking a lot of my time at the moment. If you want something done swiftly, I'd dive into the code and have a poke around. It's edu-ma-cational!