This modification of G2E for the Stealthburner has an additional filament detection sensor after the extruder. I have designed this, as other designed didn't seem to be as reliable with my setup. The additional PTFE stickout from my Rapido hotend is around 16mm. Make sure that your PTFE tube sits well between the extruder and hotend.
Additional hardware:
Mind the correct orientation of the switch. Print this with the recommended Voron settings.
The author remixed this model.
Additional filament sensor after extruder for ERCF/MMU