Filament Motion Detector for 6mm Encoder

I made this with cheap 3 pin rotary encoders in mind. I had a couple lying around and the thing I remixed from was the first one that worked off the bat.

It's a great design and very robust and, so far i haven't had any false notifications from it.

I remixed this from https://www.thingiverse.com/thing:6114701.

There are two variants one for mounting on a wall or an extrusion and another for mounting on my direct drive hot end.

The different versions are different mounting options and currently V3 of both is what i am using.

There are two different wheels for the different size springs that you have available.