mesh bed leveling issue

fcwilt

@morf33 said in mesh bed leveling issue:

my printer is 220 x 220 and i have it were it homes in the middle .

; Axis Limits
M208 X-13 Y-3 Z0 S1 ; set axis minima
M208 X200 Y170 Z240 S0 ; set axis maxima

Hi,

What do you mean by "homes in the middle"?

Thanks.

Frederick

morf33

when you do autohome when it goes thru to do the endstops it will center on the center of the bed after it does the z probe of the bed . when i click mesh it starts in the middle of the bed . how do i get it to start at the corner like it should

fcwilt

@morf33

We need to see the code that is executed with you are probing the bed.

Frederick

morf33

were would that info be what files do i need to post ?its the drop down menu for the mesh compensation.

fcwilt

@morf33 said in mesh bed leveling issue:

were would that info be what files do i need to post ?its the drop down menu for the mesh compensation.

Here is something to get you started. It's not exactly the way I do it but it works.

https://duet3d.dozuki.com/Wiki/Using_mesh_bed_compensation

Frederick

Phaedrux

Do you have a bed.g file? That may ultimately be what you're running from the drop down.

morf33

this is in the bed g file
; bed.g
; called to perform automatic bed compensation via G32
;
; generated by RepRapFirmware Configuration Tool v3.1.4 on Thu Jul 23 2020 14:47:56 GMT+0300 (Arabian Standard Time)
M561 ; clear any bed transform
G29 ; probe the bed and enable compensation

Phaedrux

Where are the endstops physically located?
Does -X move to the left, +X to the right?
Does -Y move the nozzle to the front of the bed and +Y to the back?
Is the Y axis really only 170mm long and the X is 200mm?

morf33

oki set it to 170 becasue it would try to keep going but i now find out that the y is moving more than it should
10mm is 13mm when it moves so i need to adjust the steps ?

Phaedrux

@morf33 said in mesh bed leveling issue:

M92 X100.00 Y100.00 Z400.00 E409.00 ; set steps per mm

You'd have to do the calculation knowing your belt tooth pitch and pulley tooth count as well as stepper resolution and microstepping, but I think your correct steps for X and Y is actually 80.

xy_steps_per_mm = (motor_steps_per_rev ∗ driver_microstep) / (belt_pitch ∗ pulley_number_of_teeth)