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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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skr mini e3 v2 BLtouch 2.0 ender 3 cant find z offset---5 pin connector/keeping zstop plugged in #600

Open sethboy123456 opened 2 years ago

sethboy123456 commented 2 years ago

so I just wired up the skr mini e3 2.0 and flashed the firmware-bltouch.bin from the github page. The Bl-touch is plugged into the five pin dedicated port on the SKR. Everything functions as it should, and the probe will complete its 25 point operation and stop. The issue im having is that when i go to print the nozzle is still way to high. The stock offset is -1.85 and im using a stock extruder/the bracket that came with the BL touch. How do I find my true z-offset when I'm not using the bltouch as the z-stop? it wont let me move my z value below 0 and there is no function for the probe to find home in the center of the bed like i see in other videos. I would set it up and use it as the z-stop but my bltouch came with a one piece 5 pin connect. Please help -Seth

beshur commented 2 years ago

Same here with SKR Mini v3

sethboy123456 commented 2 years ago

Okay so I fixed the issue. I cut the five pin connector off, soldered a 3 pin and 2 pin connector on. Flashed the bltouchzstop firmware. Then set my zoffset to -5 which let me find the real zoffset. Just move z down until you are left with a number, then subtract that from the 5 and you got your z offset.

Seelenkind commented 2 years ago

I've read about the problem before. If you have connected the 2 wires from the BL Touch to the Z endstop then the firmware must contain the following:

define Z_MIN_PROBE_USES_Z_MIN_ENDSTOP_PIN

//#define USE_PROBE_FOR_Z_HOMING If you have connected all 5 wires to the probe pin, it must be the other way around: //#define Z_MIN_PROBE_USES_Z_MIN_ENDSTOP_PIN

define USE_PROBE_FOR_Z_HOMING

beshur commented 2 years ago

My problem was fixed by adding spacers to the BlTouch mount, so the deployed BlTouch pin was below the nozzle.

On Tue, 1 Feb 2022, 01:40 Hilmi Sönmez, @.***> wrote:

I've read about the problem before. If you have connected the 2 wires from the BL Touch to the Z endstop then the firmware must contain the following:

define Z_MIN_PROBE_USES_Z_MIN_ENDSTOP_PIN

//#define USE_PROBE_FOR_Z_HOMING If you have connected all 5 wires to the probe pin, it must be the other way around: //#define Z_MIN_PROBE_USES_Z_MIN_ENDSTOP_PIN

define USE_PROBE_FOR_Z_HOMING

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