HOW I BUILT IT
I took the most inspiration from this word clock. It took around a month to finish it, working only in my spare time and weekends.
I designed the parts with FreeCAD. All parts have been printed with an Anycubic Kossel Linear Plus 3D printer. I used an ESP8266 microcontroller (on a NodeMCU board). The code was made in C++.
Everything is open source and can be found on my Github.