Ender 3 Filament Sensor

Filament run-out sensor for Ender 3, I have it hooked into my PI and runs through octo print. Uses a roller limit switch with ~9mm hole spacing, has lots of adjustment for different switches.

Feel free to tip the designer and help me fund more 3D printing/Designs

Update 1:
Added File with 4mm outlet to install PTFE tube