This web content discusses the construction and design of a balancing cube called the “Cubli.” The cube, inspired by researchers at ETH Zürich and improved upon by others, uses clever controls and reaction wheels to balance on a corner and rotate around its axis. The author shares their experience and process of reverse-engineering and building their own version of the Cubli, with the goal of making the design open source. They emphasize that while the cube may have no practical value, it serves as a great learning experience and research project. The author also plans to add mechanical brakes to enable the cube to jump up and reach its balancing position on its own. Overall, the content provides detailed insights into the mechanical and electromechanical designs, as well as the control system and tuning.
https://willempennings.nl/balancing-cube/