Question M671 coordinates ?

lui2004

no only 1 stepper for Z

BoA

@lui2004 So no need for M671 as there is no way to level the bed automatically with only 1 stepper motor on Z.

lui2004

ok !

and how i cann level my bed ?

i have only setup G29

if you want i can post my config

BoA

@lui2004 Ender levels the bed using screws below the table. It is manual process.

lui2004

@BoA i know they are leveling screws to level but how i dont know

BoA

@lui2004 https://www.youtube.com/results?search_query=ender5+bed+leveling

BoA

This post is deleted!

BoA

OK, After some reading - there is some support for manual bed leveling. To check the coordinates of bed leveling screws just home the machine, and move the head manually (using paneldue or DWC, not hands ) to get the nozzle over the screw - and current head position is the number You need. But:

For machines without multiple independently-driven Z leadscrews, this command can also be used to define the positions of the bed levelling screws instead. Then bed probing can be used to calculate and display the adjustment required to each screw to level the bed. The thread pitch (P parameter) is used to translate the height adjustment needed to the number of turns of the levelling screws.

This still would require some bed probe installed to measure current bed position.

lui2004

i use the bltouch

BoA

@lui2004 OK Then, so just move the nozzle over the screw and Your current X Y coordinates are the screw coordinates

lui2004

@lui2004 said in Question M671 coordinates ?:

G30 P0 X28.8 Y24 Z-99999 ; hinten rechts G30 P2 X198.8 Y24 Z-99999 ; hinten links G30 P3 X198 Y194 Z-99999 ; vorne links G30 P4 X28.8 Y194 Z-99999 S4 ; vorne rechts and report adjustments needed

this are my x and y over the screws

G30 P0 X28.8 Y24 Z-99999 ; rear right
G30 P1 X198.8 Y24 Z-99999 ; rearr left
G30 P2 X198 Y194 Z-99999 ; front left
G30 P3 X28.8 Y194 Z-99999 S4 ; front right and report adjustments needed

how i make with this coordinates a M671 ?

sorry for all my stupid questions

BoA

@lui2004 I would go with something like:

M671 X28.8:198.8:198:28.8 Y24:24:194:194

Example

M671 X-15.0:100.0:215.0 Y220.0:-20.0:220.0 ; Z leadscrews are at (-15,220), (100,-20) and (215,220)

lui2004

ok i will test it

thanks for your pacienc

my bed.g in first post is correct ?

BoA

@lui2004 I would remove G29 from it, or move it AFTER leveling, or use G29 S2. Also from what I remember, if You have bltouch configured, there is no need to deploy/retract M codes

lui2004

ok,so i delete deployprobe.g and retractprobe.g from sys

i got this error:

G32
Error: Bed calibration : 4 factor calibration requested but only 1 points provided

BoA

@lui2004

G30 P0 X28.8 Y24 Z-99999 ; hinten rechts
G30 P1 X198.8 Y24 Z-99999 ; hinten links
G30 P2 X198 Y194 Z-99999 ; vorne links
G30 P3 X28.8 Y194 Z-99999 S4 ; vorne rechts and report adjustments needed

You missed P1