Gantry leveling offset

maroonds

Hi! I was wondering, if it is possible to have an idividual z offset for both z motors. After I level my gantry with g32 the right side is always higher than the left side and I get a bad first layer.
Board: Duet Maestro running RepRapFirmware for Duet 2 Maestro 2.05.1 (2020-02-09b1)

fcwilt

@maroonds

G32 is supposed to result in a level bed.

Something is clearly not working as it should.

Post your config.g and bed.g files using the </> tag.

Frederick

maroonds

Sure!

; Custom settings are not defined
; Configuration file for Duet Maestro (firmware version 2.03)
; executed by the firmware on start-up
;
; generated by RepRapFirmware Configuration Tool v2.1.8 on Wed Apr 22 2020 01:05:56 GMT+0200 (Mitteleuropäische Sommerzeit)

; General preferences
G90                                                  ; send absolute coordinates...
M83                                                  ; ...but relative extruder moves
M550 P"My Printer"                                   ; set printer name

; Network
M552 P192.168.1.69 S1                                ; enable network and set IP address
M553 P255.255.255.0                                  ; set netmask
M554 P192.168.1.254                                  ; set gateway
M586 P0 S1                                           ; enable HTTP
M586 P1 S1                                           ; enable FTP
M586 P2 S0                                           ; disable Telnet
M552 S1 P192.168.178.99

; Drives
M569 P0 S1 D3 v0                                     ; physical drive 0 goes backwards X
M569 P1 S0 D3 v0                                     ; physical drive 1 goes backwards Y
M569 P2 S0 D3 v0                                     ; physical drive 2 goes forwards Z
M569 P3 S1 D3 v0                                     ; physical drive 2 goes forwards Z
M569 P4 S1 D2                                        ; physical drive 3 goes forwards E
M584 X0 Y1 Z2:3 E4                                     ; set drive mapping
M350 X32 Y32 Z64 E32 I1                              ; configure microstepping with interpolation
M92 X160.00 Y160.00 Z1600.00 E695                    ; set steps per mm
M566 X420.00 Y420.00 Z24.00 E250.00                  ; set maximum instantaneous speed changes (mm/min)
M203 X6000.00 Y6000.00 Z720.00 E7200.00              ; set maximum speeds (mm/min)
M201 X2000.00 Y2000.00 Z1000.00 E1250.00             ; set accelerations (mm/s^2)
M906 X700 Y700 Z600 E850 I30                         ; set motor currents (mA) and motor idle factor in per cent
M84 S30                                              ; Set idle timeout
M204 P1000 T2000                                     ; Set printing and travel accelerations
M572 D0 S0.03                                        ; Pa
M564 H0                                              ; movement without homing
M669 K0

; Axis Limits
M208 X-5 Y-5 Z-5 S1                                  ; set axis minima
M208 X234 Y226 Z260 S0                               ; set axis maxima

; Endstops
M574 X1 Y1 S1                                        ; set active high endstops
M574 Z1 S2                                           ; set endstops controlled by probe

; Z-Probe
M558 P9 H3 F120 T3000 A3 B1                            ; set Z probe type to bltouch and the dive height + speeds
G31 P500 X49 Y23 Z1.87                               ; set Z probe trigger value, offset and trigger height
M557 X49:233 Y23:220 S15                           ; define mesh grid

; Heaters
M307 H0 B0 S1.00                                     ; disable bang-bang mode for the bed heater and set PWM limit
M305 P0 T98801 B4185 R2200                           ; set thermistor + ADC parameters for heater 0
M143 H0 S120                                         ; set temperature limit for heater 0 to 120C
M305 P1 T100000 B4725 C7.060000e-8 R2200             ; set thermistor + ADC parameters for heater 1
M143 H1 S300                                         ; set temperature limit for heater 1 to 280C

; Fans
M307 H2 A-1 C-1 D-1                                  ; Disables H2
M106 P0 A22 H-1 S0 F150 X185                         ; Part cooling fan
M106 P2 A2 H1 T45                                ; Hotend fan

; Tools
M563 P0 D0 H1 F0                                     ; define tool 0
G10 P0 X0 Y0 Z0                                      ; set tool 0 axis offsets
G10 P0 R0 S0                                         ; set initial tool 0 active and standby temperatures to 0C
M208 X-23 Y-14 S1

; Custom settings are not defined

; Miscellaneous
M501                                                 ; load saved parameters from non-volatile memory
M911 S23 R23.7 P"M913 X0 Y0 G91 M83 G1 Z3 E-5 F1000" ; set voltage thresholds and actions to run on power loss
G29 S1
M671 X-15.0:230.0 Y110.0:110.0

; bed.g
; called to perform automatic bed compensation via G32
;
; generated by RepRapFirmware Configuration Tool v2 on Tue Jan 29 2019 19:02:30 GMT+0100 (Mitteleuropäische Normalzeit)
G28
G30 P0 X60 Y100 Z-99999 ; probe near an adjusting screw
G30 P1 x180 Y100 Z-99999 S2; probe near an adjusting screw

fcwilt

Hi,

Don't see anything wrong in those two files.

Please post your homeALL.g file.

Thanks.

Frederick

Rushmere3D

This post is deleted!

maroonds

@fcwilt I usually have the g32 command in my start gcode. Here's the homeall.g file:

; homeall.g
; called to home all axes
;
; generated by RepRapFirmware Configuration Tool v2.1.8 on Wed Apr 22 2020 01:05:56 GMT+0200 (Mitteleuropäische Sommerzeit)
G91                     ; relative positioning
G1 H2 Z5 F6000          ; lift Z relative to current position
G1 H1 X-245 Y-240 F1800 ; move quickly to X and Y axis endstops and stop there (first pass)
G1 H2 X5 Y5 F6000       ; go back a few mm
G1 H1 X-245 Y-240 F360  ; move slowly to X and Y axis endstops once more (second pass)
G90                     ; absolute positioning
G1 X0 Y0 F6000         ; go to first bed probe point and home Z
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

Veti

post the output of 3 consecutive G32

also after a G32, you need to home z again.

fcwilt

@maroonds

The only thing I would change is the XY position when using G30.

I always use the same exact XY position whenever I do a G30 and I always use the center of the bed.

And as mentioned you need to do a G30 after doing one or more G32s.

Since it may take more than one G32 to get things level I do it this way:

; *** bed.g ***

; --- set positions of ball studs for auto-leveling (S is max allowed adjustment)

M671 X-180:0:180 Y-65:130:-65 S3

; --- run first pass ---

M98 P"bed_3.g"

; --- if deviation is too large run additional passes ---

while move.calibration.initial.deviation >= 0.02
  ; check if pass limit reached

  if iterations = 5
    abort "Bed Leveling Aborted - Pass Limit Reached"

  ; run next pass

  M98 P"bed_3.g"

; *** bed_3.g - called by bed.g ***

; --- probe near ball studs ---

G30 P0 X-145 Y-65 Z-99999    ; probe near ball stud #1
G30 P1 X0    Y100 Z-99999    ; probe near ball stud #2
G30 P2 X145  Y-65 Z-99999 S3 ; probe near ball stud #3

; --- set Z=0 datum ---

M98 P"center_probe.g"        ; position to center of bed for probing
G30                          ; do single probe which sets Z to trigger height of Z probe

maroonds

@Veti
7.3.2021, 13:20:13 g32
Leadscrew adjustments made: -0.035 0.005, points used 2, deviation before 0.016 after 0.000
7.3.2021, 13:19:38 g32
Leadscrew adjustments made: -0.028 0.006, points used 2, deviation before 0.012 after 0.000
7.3.2021, 13:19:05 g32
Leadscrew adjustments made: -0.041 0.043, points used 2, deviation before 0.021 after 0.000

fcwilt

@maroonds said in Gantry leveling offset:

@Veti
7.3.2021, 13:20:13 g32
Leadscrew adjustments made: -0.035 0.005, points used 2, deviation before 0.016 after 0.000
7.3.2021, 13:19:38 g32
Leadscrew adjustments made: -0.028 0.006, points used 2, deviation before 0.012 after 0.000
7.3.2021, 13:19:05 g32
Leadscrew adjustments made: -0.041 0.043, points used 2, deviation before 0.021 after 0.000

For reasons lost in the mists of time as you can see if my bed_3.g file I include a single G30 after the leveling pass.

I know you need to do a G30 but I don't know if you need to do it after each pass or after all passes.

Frederick

maroonds

@fcwilt Could my issues come from my rather old firmware version?
If so, is there a config converter from RRF2 to RRF3?

fcwilt

@maroonds said in Gantry leveling offset:

@fcwilt Could my issues come from my rather old firmware version?
If so, is there a config converter from RRF2 to RRF3?

It's possible but it has been quite a while since I used v2 so I don't have any specific recollection.

I don't know of a convertor. I converted by editing my existing files. It wasn't as much work as I thought it would be.

I've never used the RRF configuration tool so I don't know if you can load a v2 .json file into the v3 tool.

Frederick

Stephen6309

@fcwilt I'veloaded a v2 json for a v3 config. It won't populate any of the pin stuff.

fcwilt

@Stephen6309 said in Gantry leveling offset:

@fcwilt I'veloaded a v2 json for a v3 config. It won't populate any of the pin stuff.

Not too surprising since v2 didn't use pin assignments.

Thanks for the feedback.

Frederick