New to electronics, tackling a project that involves a switch matrix. Having grasped the concept of regular button matrices and modifier keys, it’s time to move on to explore alternative types of switches, such as rotary and slider switches. However, I came across the following issue:
Why does this happen? At first I wondered if this was some sort of manifestation of the ghosting phenomenon that I read about when learning about regular button matrices, but I’m doubtful: if I think about this wiring, if I had hooked up the first legs of button switches to the same Row1, and their second legs individually to Column1 and Column2 respectively, then I would only be getting one registered key press at a time. What makes this rotary switch wiring different?
(I thought I wouldn't need to wire all 11 positions until I get the principle to work with the bare minimum first.)