Massive Knob

Control audio devices using physical knobs.

Inspired by an article on Prusa's blog, this project has a slightly different set of goals:

Must have

1. Control multiple audio devices, one set of physical controls per device
2. Volume is set to an absolute value (potentiometer instead of a rotary encoder)

Because of the second requirement, a simple media keys HID device does not suffice and extra software is required on the desktop.

Nice to have

1. Physical buttons to switch the active device a. by changing the Windows default output device b. by running a VoiceMeeter macro
2. Corresponding LEDs to indicate the currently active device

Developing

The hardware side uses an Arduino sketch to communicate the hardware state over the serial port.

The Windows software is written in C# using .NET Framework 4.7.2 and Visual Studio 2019.