Let's talk about the elephant in the room

Before getting into my next video, which will be an Apache TEDAC build, I wanted to give you some details on how are we going to be able to connect all the buttons and switches, numbering over 80 digital and 4 analog inputs, to the Arduino Pro Micro, which only has 18 pins.
Apache TEDAC build site: srsosio.wixsit...
Follow me on Twitch: / sr_sosio
My thingiverse designs: www.thingivers...