Hope you all are safe and healthy. Recently, I been working with some projects on microtonal music. Projects like PreenFM2 & H-Pi TBX2b inspired me to a great extent, it would be fascinating in case we could replicate or create a DIY project similar to those with the bare-bones minimum using Arduino or teensy. In my scenario, scala files will be stored in an external MicroSD card as cent values, then it will be read and pre-processed in poly mode from 1-16 MIDI channels separately into arduino. Obviously, the deal here is to convert cents to pitchbend values and perhaps maybe we might also need to create a separate library for that purpose. By random on Google search, I came across a thread with the title "polyphonic microtonal converter using arduino" but that thread is no more active now. Someone, should you are familiar with this topic can shed some light.