Z axis filament runout sensor

I'm sure plenty of you know the trick of taking your old Z axis sensor and repurposing it as you filament runout sensor. I included the wiring diagram that you need to make this work. past that you only thing you will need is a 4.5mm BB from a BB gun.

Just place the sensor in the enclosure, then add the 4.5mm BB and finally add the cover on top. There are direction arrows to help.

This is designed to be free floating on the filament. Victor Bared suggested it on his channel and I thought it was a good idea. Check out his channel, he has some good content. I just wished he put some of his projects on Thingiverse.