A home built 6 DOF CAD mouse. Based on Shinsaku Hiura's 'Space Mushroom', mentioned in this Hackaday article. I made some modifications.

The 3D printed body is mostly the same, but I had to modify the internals.

I only had a couple of Micro Pro Atmega32u4's at home. Which does not have enough analog pins. So I decided to daisy chain together two of them. Calling them HEAD and TAIL.

To make it easier and, in my opinion, better. I decided to only support Blender. Thus making it depend on a Blender add-on. Source code for Blender add-on

The curcuit looks something like this:

          Joystick1
              |
Computer <-> HEAD <-> TAIL <-> Joystick3
              |
          Joystick2