Overcycler3 firmware done!

I have finished porting the firmware, and I am happy: I had no major modification to do on the prototype for everything to work :)

At a glance, what I added:
- Mono aftertouch (or "channel pressure").
- Automatic filter tuning.
- A bootloader, to allow easy and riskless firmware updates.
- A cleaner MIDI implementation with CC and NRPN.

By the way, I was able to implement the WaveMod called "crossover" in true polyphony, and even allow it on the 2 oscillators, a small demo:

This allows a 4 single cycle sound as "partials", here I modulate it with the oscillators envelope, we can also hear the aftertouch modulating the filter brightness.

Overcycler3 update

The PCB design is finished, and I received the (almost) entirely populated first prototypes from https://jlcpcb.com/ (they didn't have the SSI2144).

Here's a picture of the PCB:

I am now working on porting my firmware on this new version.

By the way, here's what has changed since my earlier post:
- One more envelope, dedicated to oscillators (the filter envelope was used beforehand, but it felt a bit cheap...).
- Instead of a SDCard slot, I now use a soldered flash chip, which will be accessable through USB.
- Shipped with a machined enclosure, the potentiometers, the display, the 16 keys keypad, the knobs, and probably a vinyl for the panel, assemble it yourself (about 250€), or entirely assembled (about 300€).