i Have been trying to set up my Probe on My 3d-printer but it keeps heading straight for my heatbed without stopping. I am reusing the Probe from my Neptune 4 Max here is the datasheet: gx-f_h_e_cata.pdf (3.2 MB)
I have it on a 12V and the correct Jumper is selected
the LED on the probe goes out on a specific point (4mm) despite the Z_offset in the printer.cfg [probe]. but that is ok because there is still ~1mm room between my heatbed and nozzles at that point.
(the probe does detect metal objects but not my finger)
At first i was using the DIAG for the Z-axis but that kept returning “endstop z still triggered after retract” so i moved on to the probe, because that is also what i need for leveling. but now it keeps crashing into my heatbed. (I did build a Z-stop at 0mm nozzle tolerance so that my extruder wil stay intact)
As indicated by @EddyMI3D: The voltage on a typical board MUST NOT exceed 3.3 V or it will damage the MCU (very few are 5 V tolerant)
If you supply an inductive probe with 12 V then you will also have 12 V on its output pin.
Depending on the probe’s type, there are two correct ways to connect them:
PNP: With a diode (fast Schottky recommended, BAT43 or BAT85) on the signal line, blocking from the probe towards the pin on the board
NPN: A voltage divider that is correctly calculated to reduce the supply voltage down to 3.3V
Looks good. Follow Configuration checks - Klipper documentation to verify general functionality.
It needs to report “triggered” when close to some metal object and “open” otherwise.
Checked those before and after adding the jumper i was talking about earlier.
And it reported ‘open’ before and ‘triggerd’ after adding the jumper and homing the Z-axis worked perfectly after that, no errors!
DO NOT FORGET!!
don’t forget to add “homing_retract_dist: 60” to your Y-Axis for homing your printer because your probe need to be above your heatbed (for me 60mm was needed). otherwise it will still crash into the ground.
