DIY Wheel with Simhub & Nextion Display


I was planning my projekt for my new Racing Wheel and I stumbled over the following sentence on SimHub Wiki:

"Arduino Pro Micro : The arduino will emulate a TTL and allow RGB LEDs or buttons to be added"

Now, I plan to add rgb leds AND buttons and I am wondering, if every free pin is free to use.
Will this wiring plan I have in mind work out?
Screenshot 2021-01-19 105114.png

Thanks everyone for your help!
So Im building a wheel with a Vocore display. At the moment, I am using a joystick controller for the buttons, and a second USB cable for the display. I'm wanting to go wireless. Can one board handle both the switches and then the display as well?
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I made one with a screen - used a vocore and an LED strip.
Fun project, but I never got round to finishing it. It needs the handles to be wrapped in alcantara or something, and the front re-printed without the printing pattern.


Everything works, encoders, pushes, switches etc.
Hey friend do u have a tutorial for that?
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