This is an M12 size inductive probe mount that fits in combination with @Elias_1320404 's Dual 4020 Satsana remix hot-end cooler for the Ender3 and Ender3Pro.
Also fits when using @Senkii_375738 ‘s Ender3 Direct Drive mod and clears @PraetorianCZ ’s QR Code Cover
Version 1:
Version 2:
Fits the popular inductive proximity sensors from the LJ12A3 series and other M12 sized probes.
I'm using the LJ12A3-4-Z/BX-5V NPN NO which runs on 5volts and should be far easier to connect than the 6-36v versions. (non -5V modelnumbers)
Warning: 5Volt probe requires a spring steel printbed!
Also tested with a sheet of aluminium kitchen foil under a regular flexi magnetic bed. It seems to work for me, but your mileage may vary
To connect an 5volt LJ12A3 probe:
I've connected positive of the probe (brown wire) to the 5V/VCC pin of the ICSP header on the v1.1.4 (Melzi 8bit) board for power, ground (blue wire) to the left pin of the Z-endstop and signal (black wire) to the right pin of the Z-endstop header.
For this, I've used a single strand of a dupont flatcable for the positive and a 2pin JST-PH connector for signal and ground.
V1 Custom Probe offset in TH3D UF2 when using a stock Mk8 hot-end:
#define NOZZLE_TO_PROBE_OFFSET { -49, -9, 0 }
V2 Custom Probe offset in TH3D UF2 when using a stock Mk8 hot-end:
#define NOZZLE_TO_PROBE_OFFSET { -43, -7, 0 }
And since this is a NPN NO sensor, the switching logic should be inverted with this addition to the configuration.h of UF2:
#define INVERT_EZABL_LOGIC
The author marked this model as their own original creation.