Filament Motion Sensor Encoder v2

UPDATE 26/10/2023:
I have revised the "Spring Case" to make loading filament much easier. Install filament from the face rather than threading. You can also add a drilled out brass heated insert for durability and then with a dremel cut a slot in the side to match the slot in the part.

UPDATE 13/07/2023:
Have been testing for a week now printing for several hours without issue and I can confirm its works well on 3.3v supply. I am no longer going to develop any other of my motion detection designs... this is it. It's compact enough for me, easily accessible loading filament and accurate. I adjusted the detection setting to 7mm and had a few false postive runout pauses, set to 8mm and I have had no more.

Filament Motion Sensor v2

Currently testing on my Voron 2 using Klipper.

For reliability and accuracy, I went with a rotary encoder to detect filament motion or lack thereof and runout.

Tried to keep it as small as possible as usual. With the mounting ring the encoder