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TB3S---DIY-QMK-Trackball-device. QMK TrackBall with 3 Switches (TB3S)
Trackball-mousekeys-add-on-for-Skeletyl. C
wiggleball. ploopy trackball nano scroll mode by wiggle gesture
pmw3610-pcb. An open source breakout board for PixArt PMW3610DM-SUDU low power optical mouse sensor.
xmk. Use programmable keyboard firmware with any keyboard.
