deej VS EarTrumpet

You have some alternatives. For one you may look into the Deej sources, it uses python to manipulate the volume level of different apps/devices so maybe it's a good starting point.

It's a wonderful little project called Deej. I couldn't live without it at this point: https://github.com/omriharel/deej

The code and schematic for the electrical components is from a project called Deej https://github.com/omriharel/deej

Deej is fucking amazing.

I allready build a controller for different applications. Try usind deej. The one that build is also have a discord with many frindly people that helpt me a lot. https://github.com/omriharel/deej/releases

As the title says i've been trying to change volume of audio endpoints based on a serial connection via an arduino (sorta like https://github.com/omriharel/deej, but there are also buttons involved for macros and a ui via tauri). I've been experimenting with the windows-rs package to get it to work myself but i can't. can somebody link an example for this sort of functionality or a already made project with this sort of functionality?

The macropad is based off of Deej. There are a ton of remakes of it, so I made one for myself. The knobs are for volume on different programs.

good job! reminds me of a 4 slide potentiometer 'mixer' I build a while ago, based on https://github.com/omriharel/deej

No, I don't mind. Here's where it is in github. The heavy lifting there is done by a very helpful IconExtractor library I found, all credit there to TsudaKageyu. I had issues getting that to do system apps so I just used the standard IconHelper.LoadIconResource.