I’ve been interested in using the Pi Zero for single purpose applications, like embedding a basic engine in a keyboard controller. But the variable computing requirements for Mod pedalboards may choke a zero.
I saw the whlen 2018 post on the Zero and this 2020 post and I had been waiting for an image build that would run on a Zero without a lot of tinkering. (The Zero size Audio injector with ADC/DAC is selling on Amazon for $16.90)