Blip Tool?

Apologies if it’s been discussed. I searched to no avail. I noticed a new PCB in the files on github. What is that for?

This is a board for processing the oscillators’ audio signal by a digital filter running on another AVR. Not tested, not sure yet if I’m really going to do it. I’d rather finish the trove of filters based on the SSM2164 I have done lately (currently running fine as Spice models), even if I learned today that this chip is going to be discontinued.