Hexagonal keyboard controllers open up new possibilities for playing in diatonic or microtonal scales, but there are very few available, and the only models with traditional moving keys like the Lumatone or the Microzone cost thousands of dollars. The Midihex is intended to make an affordable design with open-source software more widely available to performers and experimenters. It’s essentially a reboot of the rare/discontinued C-Thru Axis-49 with Hall-effect keys for continuous sensing and expanded possibilities for configuration and musical expression.