[HOW TO] Set up your Auto-Levelling Bed

[Gort]

btw anyone know how to solve my problem?

[bolsoncerrado]

:O

80mm/s!!!

Woah!

U need to set us up a stepbystep tutorial!

I wanna try it!!

[Gort]

:O

80mm/s!!!

Woah!

U need to set us up a stepbystep tutorial!

I wanna try it!!

I simple followed the post here on the forum about E3D-V6 installation and added this: https://www.thingiverse.com/thing:1089085

[Joao]

Gort,
I don't know which version of the firmware that you have, but mine (Marlin 1.1.0-RC6) has many alternatives for what you are trying to achieve.
On the bed levelling configuration you can specify not only the location of the sensor compared to the head, but only the area limits and region for the bed levelling mesh.

[Gort]

Gort,
I don't know which version of the firmware that you have, but mine (Marlin 1.1.0-RC6) has many alternatives for what you are trying to achieve.
On the bed levelling configuration you can specify not only the location of the sensor compared to the head, but only the area limits and region for the bed levelling mesh.

yes i'm using 1.1.0-RC6 bugfix too. but what you're sayin its for autobedlevelling command: "G29", my problem it's at "G28" stage when X,Y,Z axes goes to zero, my Z axes its outside the bed A nice fix can be for example tell the printer to perform "G28" at the center of the bed, but how?

[Joao]

yes i'm using 1.1.0-RC6 bugfix too. but what you're sayin its for autobedlevelling command: "G29", my problem it's at "G28" stage when X,Y,Z axes goes to zero, my Z axes its outside the bed A nice fix can be for example tell the printer to perform "G28" at the center of the bed, but how?

I don't understand, sorry.
What has the Z axes to do with homing? Isn't the Z coordinate on your printer the vertical distance of the bed to the nozzle?
Anyway, you can choose the X,Y,Z when homing in the firmware.

What do you wan't to achieve when you position the nozzle on the 0,0 (home) coordinates?

The sensor is only used for auto-bed-levelling. If the sensor is not hover the bed while printing it's not a problem at all.

[Gort]

I've found the trick:

#define Z_SAFE_HOMING


#if ENABLED(Z_SAFE_HOMING)
  #define Z_SAFE_HOMING_X_POINT ((X_MIN_POS + X_MAX_POS) / 2)    // X point for Z homing when homing all axis (G28).
  #define Z_SAFE_HOMING_Y_POINT ((Y_MIN_POS + Y_MAX_POS) / 2)    // Y point for Z homing when homing all axis (G28).
#endif

Now it probes Zhoming at the center of the bed

[Gort]

btw to set "#define Z_PROBE_OFFSET_FROM_EXTRUDER 0" you cant fake position with new marlin firmware u must use "M851" Gcode to set the offset of the probe and fine tuning the nozzle position, "G92Z xx" doesnt work

[Gort]

here my first print test:

[jeffrey]

The sensor is only used for auto-bed-levelling. If the sensor is not hover the bed while printing it's not a problem at all.