ThumbsUp! Keyboards

ThumbsUp! Trackball comes in three versions, v3 (the bottom one), v5 (top left) and v4 (top right): https://github.com/ak66666/ThumbsUp-Trackball-v3 https://github.com/ak66666/ThumbsUp-Trackball-v4 https://github.com/ak66666/ThumbsUp-Trackball-v5-Omron Trackball v3 and v5 Versions v3 and v5 have the same layout, six mouse buttons in each, plus configuration buttons and three slider switches. The only difference between them is the switch types they use: Kailh Choc in v3 and regular mouse-type buttons Omron in v5,  These two versions can be used as thumb- or finger-operated with either left or right hand. Two slide switches define device orientation and hand it is used with: In thumb-operating mode index finger presses left button, middle finger - middle button, and ring finger - right button, this configuration is kept in all device positions (configured through switches shown above) : Trackball v4 v4 got two more buttons and it uses Kailh Choc switches. In v4 the orientation switc...