Filament Runout Sensor

I was Searching thingiverse for a filament runout sensor that uses the basic X,Y,Z end stop boards that most RAMPS kits come with and couldn’t find one that I liked. This one will mount to your 2020,2040,etc. extrusion. It uses M3 nuts and bolts to assemble and connects to your extrusion with M5 bolts and T-Nuts. You can use it with or without PTFE for your bowden and direct drive applications to automatically pause your machine when you run out of filament saving you from a failed print just be