This is a hand wired macro pad designed for cherry style switches and EC11 rotary encoder. To mount the micro controller use hot glue or put the metal poles from a Pro Micro into the 2 slots and same for the rotary encoder if it doesn't screw in.

Things you need: Micro controller 5 cherry style switches 5 keycaps EC11 rotary encoder(or any that has a 6.75mm screw) 32mm knob 1N4148 diodes

Also if you are looking for a higher quality metal version you can check out Pikatea.com