Before going into detail of coding or wiring, I will publish here the links to the existing project resources (videos and code repositories).
Sorry about the video language, but I prefer writing in Spanish in places like youtube where automatic translation is good enough.
Youtube channel:
https://www.youtube.com/channel/UCR5-nrKV7iJBCj24QehHoNA
Github repositories:
https://github.com/pangodream/Claudio
Inside Hardware folder, you may find some hardware pictures and a wiring diagram (though this one will have its own post) and inside Box folder are the .obj files to 3d Print the box.
https://github.com/pangodream/ClaudioRemote