Midi controller making plans.Need help!

Hi I am new to coding. But I want to make a 25 switch, 2 rotator encoder, 2 potentiometer and 2 or 1 fader usb midi controller .for switch and other I want to use an multiplexer.so I want a code and a diagram of wireing.

Like this but with more parts. Help me.
Oh! Also I am using arduino pro micro

What have You done so far? Forum will not make code and schematics for You.

post sketch.
and pls edit first post for placing the diagram in good big resolution, but not smartphone screenshot.

So far I have only made the switch work

how? without microcontroller?

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