an SNES controller, a trackball, two USB keyboards and a ton of Bondo. The front of the Keyball features a WASD D-pad, scroll wheel, trackball, tiny keyboard and a few other commonly used buttons.

Instead, [jns] focused on reverse engineering the keyboard and trackball, collectively known as the OID (Operator Input Device) for use via USB. In the video, [jns] goes into more detail about ...