Sebastian Tomczak on the Little Scale blog discusses making a pyramid-shaped 9DOF controller for adjusting parameters in electronic music.

My pyramid controller is almost identical to my sphere controller. The difference in shape means that each side feels a little like a preset, and it’s easier to have an intuition about rotation and orientation compared to a sphere.

The code is slightly different as it doesn’t adjust brightness; this looks better in my opinion. The code and model files can be found here: https://github.com/little-scale/Music-Sphere-Controller alongside a Max patch that makes it easy to get the data from the pyramid.

The board will transmit x y and z data streams for acceleration, gyroscope and magnetometer. The acceleration values determine the colour of the onboard LED. Printing in white or clear PLA makes the colour shine through nicely.

You can read more on the blog and see it in action on Instagram.