The Sno (pronounced like “snow”) board is a tiny footprint Arduino board that you can ... decoding for dealing with things like shaft encoders. There are a few others you can find on their ...

Now suppose your latest self-quarantine project needs a rotary shaft encoder. Not having one ... Of course, an Arduino reads the pulses. We love using things for unintended purposes.

The MAE4 is a kit-style encoder designed to mount directly to existing shafts, while the MA4 is a shafted version.