Filament runout sensor case for endstop switch

With this remix you can use your Ender 2030 endstop switch as a filament runout sensor.

I added the possibility to use two pneumatic fittings to have a stable connection. 

Put two M6 nuts inside the fitting holes and screw in the M6 fittings.

May fit 1830 switch.

I use it with a BTT Octopus Motherboard and therefore made a new cable with 3 strands (Voltage, Ground, Signal) instead of 2.