STM32 MIDI Controller Part 5: Multiplexed Rotary Encoders
I really like rotary encoders as user input devices, they’re free of analog noise shenanigans, have no fixed positions, can be augmented with velocity control… Just a really nice way for the user to navigate around in menus or adjust parameters. That said, they do take up at least one extra pin per encoder compared to potentiometers, and of course, they require either polling or pin change interrupts to react to changes in the states of their pins....