Project status: In development
Waiting for PCBs.
2020-05-18: Received components, still waiting for the PCBs.
2020-05-06: Prototype shipped.
2020-05-05: Prototype arrived from fab.
2020-04-23: Prototype ordered from OSHPark.
Design
Super simple. 4 inputs, one switch, one potentiometer, and one output. Completely passive, small and compact.