People have been putting Blackberry trackballs on QMK builds for quite a while.
I'm odd - what I want is a stupidly big trackball, like 4 inches across or so. And it should be able to detect rotation about the vertical axis. It infuriates me how optical tracking systems are designed to provide just translation and no rotation when there's a whole other DoF in play.
I'm odd - what I want is a stupidly big trackball, like 4 inches across or so. And it should be able to detect rotation about the vertical axis. It infuriates me how optical tracking systems are designed to provide just translation and no rotation when there's a whole other DoF in play.