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bigtreetech / BIGTREETECH-SKR-mini-E3

BIGTREETECH SKR-mini-E3 motherboard is a ultra-quiet, low-power, high-quality 3D printing machine control board. It is launched by the 3D printing team of Shenzhen BIGTREE technology co., LTD. This board is specially tailored for Ender 3 printer, perfectly replacing the original Ender3 printer motherboard.
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[BUG] BLTouch Pin Config for SKR 3.0 is incorrect #767

Open WizardOfYendor1 opened 6 months ago

WizardOfYendor1 commented 6 months ago

I upgraded my fully functional ender 3 creality board 4.2.7 to a SKR mini 3.0 (NOT 3.0.1) that was using a BLTouch.

I verified my config with issuing the klipper debug commands BLTOUCH_DEBUG COMMAND=pin_down and BLTOUCH_DEBUG COMMAND=pin_up. Both worked successfully. I also verified continuity in the wiring to ensure all the pins were connected to the board properly.

Despite that, I was getting an error when homing the z-axis with Klipper reporting "BLTouch failed to verify sensor state".

After some digging around I changed the BLTouch pin configuration as referenced here: https://github.com/bigtreetech/BIGTREETECH-SKR-mini-E3/blob/master/firmware/V3.0/Klipper/SKR-mini-E3-V3.0-klipper.cfg

I changed this line to include the caret (^) in front of the pin PC14 like this: sensor_pin: ^PC14

After I did that single change, everything worked. I was able to home my z axis. I suggest this should be changed in the sample config referenced above.

halrapinyo commented 5 months ago

Any difference for Marlin?

define Z_MIN_PROBE_PIN ^PC14

tried this but not really works do you have any clue?