A how-to on making a simple USB media knob using rotary encoder and Neopixel ring:
I like minimal solutions to problems. I was playing with a CircuitPython-enabled QT Py on a breadboard with and a rotary encoder and I ended up making a USB knob, like many others have done before. But I realized: waitaminute, I can literally just plug the encoder directly onto the QT Py…
More details on todbot blog. All design files are available in the qtpy-knob github repo.
Check out the video after the break.