@shapr
Fun backstory- it's because of projects like my keyboard that I got my first job in a full-IT company and my career actually started moving forward. I learned a lot by simply putting together my first keyboard and would highly recommend anyone to do so if they want to learn more as well.

Some skills honed::
-soldering/resoldering
-firmware flashing
-continuity and general component testing with voltmeter

Other skills can be exampled through it but those were the biggest takeaways in my interview. Though again, there are setups that allow a new user to not have to learn such in order to get started.