A rotary encoder can be mapped to the mouse wheel for scrolling documents, reducing the need to move the hand to the mouse to perform that. As an aside, if tha

A rotary encoder can be mapped to the mouse wheel for scrolling documents, reducing the need to move the hand to the mouse to perform that. As an aside, if that sounds interesting, you can do this with some of the cheap USB volume knobs available from Amazon, etc. that have a configuration menu, e.g. https://hackaday.com/2022/01/20/setup-menu-uses-text-editor-hack/ https://hackaday.com/2022/01/20/setup-menu-uses-text-editor-...