This is the 3rd (well actually the 4th) version of the AX-80 editor,
version 1, Teensy 4.1 pots and buttons
Version 2, Teensy 4.1 encoders and buttons
Version 3, ESP32 encoders and buttons
Version 4, ESP32-S3 encoders and buttons
I went to the S3 because it has the USB midi input and more uarts so I was able to mimic the Teensy 4.1 encoder version at a lower cost. Front panels a bit scruffy now as this has sort of been the test bed panel for all versions.
