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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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[v2.0 BLTouch] (Homing doesn't work) #259

Closed hadukennl closed 4 years ago

hadukennl commented 4 years ago

Just received a 2.0 e3 mini and installed the firmware.

Many options missing compared to 1.2 firmware, but most importantly BL Touch as Z homing doesn't work.

Tried connecting to z-stop pin and using dedicated probe pins

polgaro commented 4 years ago

Maybe i can help you...... there are a couple of things i had to do on top of what they said.

in platform.ini, you have to change line 32 to this: Adafruit_MAX31865=https://github.com/adafruit/Adafruit_MAX31865/archive/1.1.0.zip

In configuration.h you have to enable safe Z homing, for me is in line 1349:

define Z_SAFE_HOMING

I assume you already did the following as it's in the guide:

define Z_MIN_PROBE_USES_Z_MIN_ENDSTOP_PIN

The way it's configured, I had to disable MESH_BED_LEVELING and enable BILINEAR:

define AUTO_BED_LEVELING_BILINEAR

//#define AUTO_BED_LEVELING_UBL //#define MESH_BED_LEVELING ==> this was enabled

Now, you have a BLTouch 2.0... some advanced configurations for the BLTouch are in the configuration_adv.h

you can switch to BLTOUCH_FORCE_SW_MODE and try

hadukennl commented 4 years ago

Thank you, I'm trying to use the firmware.bin bltouch already compiled. It keeps trying to use the zsensor instead of the bltouch for z homing

hadukennl commented 4 years ago

New firmware "z homing" uploaded, this appears to be resolved