Step and f3d File Included! if you have Fusion 360 Use the f3d File.

Important: the half closed holes where the switches have to be are intentional, like that it won't have these weird artifacts on the walls that you normally have when printing holes.

--UPDATE 24.03.22--
-Added STEP and F3D files for easy Editing!
-Added New/Better Slider Style
-Added New Photos from my current setup
-Small Edit on both box and lid
I recommend using the F3D file if you can, the Step file is a mess because it doesn't save the sub folders and names of the different bodies
----

this is my own version of a volume mixer powered by Deej, i didn't liked the other designs so as usual i made my own.

to create one you basically just need parts worth 15€ or less
you should use the same buttons as i used because its designed just for them (maybe you find some buttons that also work, if so please make a comment with the link)

more information about deej can be found at https://github.com/omriharel/deej

(Print main box and "white Print" in 0.16 layer height)
i made two versions of my volume mixer one "normal" sized and one small
its a two color print that means you first have to print the "White Print Small/White Print Normal" and on top you need to print the main box (its already in the correct orientation) make sure to enable z hop while printing the main box on top of the "White Print" i have used a modified version of cura for that because in normal cura you cannot enable z hop and disable combing only for the first layer modified version can be found here https://github.com/smartavionics/Cura/releases
to get a really nice first layer effect you can make it so the first layer is just made out of walls.

i include a "silicon mold" that is basically just a rectangle.
i have glued it on a glass plate with some double sided tape and covered it with a thin film of dish soap (you can also use mold release if you have something like that) squeeze silicon in it and stroke it flat (also cover the Piece you stroke it flat with dish soap so it wont stick on it)

parts needed:

1x Arduino nano, what i used https://www.amazon.de/gp/product/B0725CFKWK/
5x Potentiometer, what i used: https://www.amazon.de/gp/product/B082HQZCQ4/
5x on/off Buttons, Designed for these Buttons: https://www.amazon.de/gp/product/B07XK1LRXY
6x 3x12 wood screws example https://www.amazon.de/dp/B01DC8TOXA
4x 3x16 or 3x20 wood screws (same style as above)
silicon to make silicon feet (15x30x3mm)
1x mini USB

Donate if you want, need more Filament for other Projects/Prototypes ;)