JWS - Filament Runout Sensor

YouTube - JWSmythe - https://youtu.be/xJ65YS31Mug

This is a filament runout sensor. It is remixed from 3djpco's "Filament Runout Sensor w/ Creality Limit Switch. He deserves most of the credit for this. I made some important changes, which you may desire.

Go read his instructions for using it. Then read my changes below.

https://www.thingiverse.com/thing:4547442

I made it for my Ender 3, but it should work on almost anything with a port available. Since it uses the old Z limit switch, you probably already have most of the parts for it.

The original version was fine, if your machine is slow. After I made some upgrades, and could do 150mm/s, the filament would get yanked by the extruder, and trip a false runout. For the last year, I've just left it on the top of my machine, because it was also an easy way to hold onto the filament without it being in the extruder. Like, so the filament roll didn't get tangled. His original instructions were to glue in s