I’m also wondering about implementing multiple nanos. My assumption is that as long as a common ground is provided linking the nanos together should not be a problem. Also looking at creating a small DSP processor using a Teensy 3.2 and audio board with some encoders ans switches for control (also CV inputs as well). I’ll update as I move along. I’m trying to come up with a very small portable full function pluggable synth package outside of the Eurorack standard, which seems to be all about the packaging. I completely understand the drive for standards, but things are getting a bit crazy price wise in that space. Too expensive for true experimentation. To my knowledge there’s nothing that can be done using Eurorack voltage standards that can’t be done using +5V, other than the whole 1V/oct limited range thing. Thoughts?