This is a DIY project, to balance a ball on a plate, characterized by innovative solutions.
The project is fully opens source, and well documented.
The project has been featured by:
Makerprojectlab [https://www.makerprojectlab.com/patterns-in-the-pixels-maker-update/].
Hackster [https://www.hackster.io/news/this-balance-bot-uses-a-mirror-to-see-the-big-picture-c26c68e3fdbe].