Bed leveling going to wrong side.

droftarts

@esobreiro if your bed homes front right, this X maximum and Y minimum. So you need to change your Y endstop from maximum to minimum. Change Y endstop to:

M574 Y1 S1 P"!ystop"

However, changing this may show other problems. Have you checked your CoreXY motors go the correct way when commanded? See https://duet3d.dozuki.com/Wiki/Test_axes_or_motors_individually

Ian

Phaedrux

Please post your homing files as well. When you change the Y endstop you'll also need to change the direction of the homing move.

Actually this isn't too bad. The A B motors are in the back, so it's just a 180 degree flip of a corexy. The "front" of the machine is arbitrary, so as long as the 0,0 point is the front left and the X Y movement directions are correct your coordinate system will be correct.

Corexy can be tricky.

Go through this document. It has tests for movement to make sure things are setup correctly for corexy.

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

esobreiro

@droftarts i tried but was not good...

@Phaedrux following my homing files:

homeall.g
; called to home all axes
;
; generated by RepRapFirmware Configuration Tool v3.2.3 on Mon Mar 15 2021 16:16:13 GMT-0300 (Horário Padrão de Brasília)
G91 ; relative positioning
G1 H2 Z5 F6000 ; lift Z relative to current position
G1 H1 X305 Y305 F1800 ; move quickly to X or Y endstop and stop there (first pass)
G1 H1 X305 ; home X axis
G1 H1 Y305 ; home Y axis
G1 X-5 Y-5 F6000 ; go back a few mm
G1 H1 X305 F360 ; move slowly to X axis endstop once more (second pass)
G1 H1 Y305 ; then move slowly to Y axis endstop
G90 ; absolute positioning
G1 X310 Y22 F6000 ; go to first bed probe point and home Z X-155 Y-75 F6000
G30 ; home Z by probing the bed

; Uncomment the following lines to lift Z after probing
;G91 ; relative positioning
;G1 Z5 F100 ; lift Z relative to current position
;G90 ; absolute positioning

; homex.g
; called to home the X axis
;
; generated by RepRapFirmware Configuration Tool v3.2.3 on Mon Mar 15 2021 16:16:13 GMT-0300 (Horário Padrão de Brasília)
G91 ; relative positioning
G1 H2 Z5 F6000 ; lift Z relative to current position
G1 H1 X325 F1800 ; move quickly to X axis endstop and stop there (first pass)
G1 X-5 F6000 ; go back a few mm
G1 H1 X325 F360 ; move slowly to X axis endstop once more (second pass)
G1 H2 Z-5 F6000 ; lower Z again
G90 ; absolute positioning

; homey.g
; called to home the Y axis
;
; generated by RepRapFirmware Configuration Tool v3.2.3 on Mon Mar 15 2021 16:16:13 GMT-0300 (Horário Padrão de Brasília)
G91 ; relative positioning
G1 H2 Z5 F6000 ; lift Z relative to current position
G1 H1 Y325 F1800 ; move quickly to Y axis endstop and stop there (first pass)
G1 Y-5 F6000 ; go back a few mm
G1 H1 Y325 F360 ; move slowly to Y axis endstop once more (second pass)
G1 H2 Z-5 F6000 ; lower Z again
G90 ; absolute positioning

; homez.g
; called to home the Z axis
;
; generated by RepRapFirmware Configuration Tool v3.2.3 on Mon Mar 15 2021 16:16:13 GMT-0300 (Horário Padrão de Brasília)
G91 ; relative positioning
G1 H2 Z5 F6000 ; lift Z relative to current position
G90 ; absolute positioning
G1 X-155 Y-75 F6000 ; go to first probe point ???
G30 ; home Z by probing the bed

; Uncomment the following lines to lift Z after probing
;G91 ; relative positioning
;G1 Z5 F100 ; lift Z relative to current position
;G90 ; absolute positioning

Phaedrux

@esobreiro said in Bed leveling going to wrong side.:

G1 H1 Y305 ; then move slowly to Y axis endstop

When you change the Y endstop to be at the minimum side, you must then also change the direction of your Y homing moves from positive to negative. (and your back off moves from negative to positive)

Phaedrux

@Phaedrux said in Bed leveling going to wrong side.:

-X should move to the left, +X to the right. -Y to the front, +Y to the back.

Is this how it's moving?

esobreiro

@Phaedrux Thanks again.

I did that because of this problem... I just revert and no success.
Now its homed at X:60 Y:30 with same behaivour.

Best regards,

Erick

Phaedrux

https://forum.duet3d.com/topic/14971/vcore-pro-core-xy-the-x-and-y-axis-home-issue/4?_=1616004568765

Take a look at this post it will lay out what you'll need to do to get the coordinate system correct.

esobreiro

@Phaedrux

Yes.

-x=left
+x=rigth

but....

-y=back

Phaedrux

@esobreiro said in Bed leveling going to wrong side.:

but....
-y=back

Ok, that's a starting point.

Go through this test:

https://duet3d.dozuki.com/Wiki/ConfiguringRepRapFirmwareCoreXYPrinter#Section_Testing_motor_movement

It will help you figure out what needs to change. It's likely that either one of the motors need a direction of rotation change and/or the motor plugs swapped. It will help you figure out which.

esobreiro

Not so fast...

After following the belt schema now, I have half bed and the following errors:

G32
Warning: Skipping grid point (36.0, 36.0) because Z probe cannot reach it
Warning: Skipping grid point (66.0, 36.0) because Z probe cannot reach it
Warning: Skipping grid point (96.0, 36.0) because Z probe cannot reach it
Warning: Skipping grid point (126.0, 36.0) because Z probe cannot reach it
Warning: Skipping grid point (156.0, 36.0) because Z probe cannot reach it
Warning: Skipping grid point (186.0, 36.0) because Z probe cannot reach it
Warning: Skipping grid point (216.0, 36.0) because Z probe cannot reach it
Warning: Skipping grid point (246.0, 36.0) because Z probe cannot reach it
Warning: Skipping grid point (276.0, 36.0) because Z probe cannot reach it
Warning: Skipping grid point (276.0, 66.0) because Z probe cannot reach it
Warning: Skipping grid point (246.0, 66.0) because Z probe cannot reach it
Warning: Skipping grid point (216.0, 66.0) because Z probe cannot reach it
Warning: Skipping grid point (186.0, 66.0) because Z probe cannot reach it
Warning: Skipping grid point (156.0, 66.0) because Z probe cannot reach it
Warning: Skipping grid point (126.0, 66.0) because Z probe cannot reach it
Warning: Skipping grid point (96.0, 66.0) because Z probe cannot reach it
Warning: Skipping grid point (66.0, 66.0) because Z probe cannot reach it
Warning: Skipping grid point (36.0, 66.0) because Z probe cannot reach it
Warning: Skipping grid point (36.0, 96.0) because Z probe cannot reach it
Warning: Skipping grid point (66.0, 96.0) because Z probe cannot reach it
Warning: Skipping grid point (96.0, 96.0) because Z probe cannot reach it
Warning: Skipping grid point (126.0, 96.0) because Z probe cannot reach it
Warning: Skipping grid point (156.0, 96.0) because Z probe cannot reach it
Warning: Skipping grid point (186.0, 96.0) because Z probe cannot reach it
Warning: Skipping grid point (216.0, 96.0) because Z probe cannot reach it
Warning: Skipping grid point (246.0, 96.0) because Z probe cannot reach it
Warning: Skipping grid point (276.0, 96.0) because Z probe cannot reach it

Phaedrux

@esobreiro said in Bed leveling going to wrong side.:

G31 P500 X180 Y100 Z1.5

Is your probe really x180 and Y100 away from your nozzle tip?

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

esobreiro

Downgrading the firmware... and test....

esobreiro

I revert the firmware from 3.2 to 2.05.1 and everything is working fine. Thank you!