On the electronics and interfacing side of things, [John] utilises the Arduino pro micro for its copious analog inputs and USB functionality. A nice feature of this board is that it’s based on ...

Rotary encoder with push-button and LED bargraph display Capacitive touch sensing on all unused jacks Optoisolated TRS-A MIDI input External PLL (SI5351A) for dynamic display resolution switching and ...

A split ortholinear keyboard based on Sofle V2 that uses RP2040 Pico MCU, 128x64 OLEDs, RGB lighting, and rotary encoders.