Ender 5 ZeroG Mercury and Voron filament runout sensor
Description
The filament sensor made by jsjamboree was a great idea but had two main problems when I modded the printer into a ZeroG Mercury. It added a lot of friction to the path due to the filament rubbing on the holes, and there wasn't an easy filament path due to the offsets being different from the Voron's reverse bowden tube holder. This remix reuses the Z-endstop board from the original Ender 5 (Though the Ender 3's might work as well, not sure) as the filament detector. In addition, I added threads for an M10 PC4 pneumatic coupler on the output, so that it can easily attach to the reverse bowden tube, as well as an option to attach an additional reverse bowden on the input if you wish. I didn't design a cover for it as I didn't think it was necessary and it's ever so slightly easier to feed the filament through when you can see the hole :). Though, one could easily be designed if you would like - including the .step file. This design does need supports everywhere enabled (so I recommend *not* printing in PETG, as those can be very hard to remove), and I recommend printing with the threaded side up. Big thanks for jsjamboree for the inspiration and clever use of the Z-endstop board!
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