Elegoo Neptune 2 - M12 Inductive Probe Mount
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Mount an M12 Probe to the stock Elegoo Neptune gantry.
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Simple print to mount an M12 inductive sensor probe to the stock gantry BLTouch mount.
The sensor I use is a PNP - NO - LJ12A3-4-Z/BY. Bought a pack of five on eBay for $15. They work with 5V and so far have been very reliable. Easily wired into the BLTouch pins on the Neptune's mainboard. I use Klipper firmware, so the configuration was very easy.
You can print on either flat side without supports. 2 walls, >30% infill.
Uses two M3 bolts to mount. I can't remember the size exactly, but I think it was 10mm? I don't want to take mine off to check because I have a perfect z-offset right now LOL
If your sensor is smaller, it should be pretty easy to modify to get a fit for yours.
UPDATE 12-24-2021: Merry Christmas~
I installed the Mini Satsana fan duct and the mount interfered with it, so I've added a new one that moves the probe to the right by 15mm.