Adafruit has made an I2C interface for four rotary encoders. It comes in the form of a PCB with four footprints that accept one of the most common rotary encoder forms (Bournes PEC11 horizontal style) ...
tom's Hardware on MSN
Playing music on the Adafruit Macropad RP2040
We programmed the Adafruit RP2040 to play music when you hit the keys. It changes octaves when you rotate the rotary encoder.
A while back, [Rupert] wrote a blog post on using V-USB with the very small, 8-pin ATtiny85. Since then, the space of dev boards for 8-pin micros with USB has exploded, the most recent being ...
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