Dactyl Manu-Ball
thingiverse
This is a adaptation of the Dactyl Manuform that incorporates trackballs under the thumb. The goal is to create a keyboard that enabled you to never move your hands back and forth between the keys and the mouse. The hardware is a Arduino Micro and uses the i2c bus to communicate between the trackballs and the right half Key cap set is over here: https://www.thingiverse.com/thing:4507807
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