I did a first test on the board using the software of another project and it does work :)

Very short demo here: https://twitter.com/DesChips/status/1036333202028331008

Now, what's next with this little thing? There are multiple directions possible:

• Digital synthesizer, with a MIDI interface or some other means of control
• Audio effects, for a guitar pedal or synthesizer (delay, reverb, distortion)
• Audio FX trigger board, playing pre-recorded sounds 
• Audio playback, recording sounds from the input and then playing it back at the push of a button
• USB sound interface

I think I will pick one or two ideas an implement them before the end of the month.