Some users have reported a potential dead zone in the trackball’s sensor when “interacting with the ball between approximately the 10–1 o’clock positions,” Kensington says in a statement. Inventory ...

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This is an alternative trackball technique using exponential map and parallel transport to preserve distances and angles for inducing coherent and intuitive trackball rotations. For instance, ...

This repository contains design files and code that can be used to make a fully programmable four-button USB trackball that can scroll by rotating the ball around the vertical axis. It achieves that ...