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    Z calibration offset

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    • Vetiundefined
      Veti
      last edited by

      there is no g30 in your home script.

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      • fcwiltundefined
        fcwilt @Thunder
        last edited by

        @Thunder said in Z calibration offset:

        Ok did some changes, would you take a look a the new files. 🙂homeall.g config.g bed.g

        Hi,

        If you get in the habit of using the </> tag to post your gcode files then we don't have to download them to look at them.

        Here is your config.g file using the tag:

        ; Configuration file for Duet WiFi (firmware version 2.03)
        ; executed by the firmware on start-up
        ;
        ; generated by RepRapFirmware Configuration Tool v2.1.8 on Sun May 24 2020 20:05:38 GMT+0200 (Central European Summer Time)
        
        ; General preferences
        G90                                                ; send absolute coordinates...
        M83                                                ; ...but relative extruder moves
        M550 P"My Printer"                                 ; set printer name
        
        ; Network
        M551 P"GoBevk"                                     ; set password
        M552 S1                                            ; enable network
        M586 P0 S1                                         ; enable HTTP
        M586 P1 S0                                         ; disable FTP
        M586 P2 S0                                         ; disable Telnet
        
        ; Drives
        M569 P0 S0                                         ; physical drive 0 goes backwards
        M569 P1 S0                                         ; physical drive 1 goes backwards
        M569 P2 S1                                         ; physical drive 2 goes forwards
        M569 P3 S1                                         ; physical drive 3 goes forwards
        M584 X0 Y1 Z2 E3                                   ; set drive mapping
        M350 X16 Y16 Z16 E16 I1                            ; configure microstepping with interpolation
        M92 X160.00 Y80.00 Z800.00 E837                   ; set steps per mm
        M566 X900.00 Y900.00 Z12.00 E120.00                ; set maximum instantaneous speed changes (mm/min)
        M203 X6000.00 Y6000.00 Z180.00 E1200.00            ; set maximum speeds (mm/min)
        M201 X500.00 Y500.00 Z20.00 E250.00                ; set accelerations (mm/s^2)
        M906 X1400 Y1700 Z1400 E800 I50                    ; set motor currents (mA) and motor idle factor in per cent
        M84 S50                                       ; Set idle timeout
        
        ; Axis Limits
        M208 X0 Y0 Z0 S1                                   ; set axis minima
        M208 X500 Y500 Z500 S0                             ; set axis maxima
        
        ; Endstops
        M574 X1 Y1 Z1 S1                                   ; set active high endstops
        
        ; Z-Probe
        M307 H3 A-1 C-1 D-1                                ; disable heater on PWM channel for BLTouch
        M574 X1 Y2 S1                                      ;  X home to min. Y home to max. Normally Closed limit switches
        M574 Z 1                                        ; Define Z to use Probe. Home to Min
        M558 P5 H5 F500 T4000 X0 Y0 Z1                     ; set Z probe type to bltouch and the dive height + speeds
        G31 P500 X-66.4 Y-10.2 Z2.15                       ; set Z probe trigger value, offset and trigger height
        M557 X70:430 Y70:450 S50                           ; define mesh grid
        
        ; Heaters
        M305 P0 T100000 B4138 R4700                        ; set thermistor + ADC parameters for heater 0
        M143 H0 S120                                       ; set temperature limit for heater 0 to 120C
        M305 P1 T100000 B4138 R4700                        ; set thermistor + ADC parameters for heater 1
        M143 H1 S280                                       ; set temperature limit for heater 1 to 280C
        
        ; Fans
        M106 P0 S0 I0 F500 H-1                             ; set fan 0 value, PWM signal inversion and frequency. Thermostatic control is turned off
        M106 P1 S1 I0 F500 H1 T45                          ; set fan 1 value, PWM signal inversion and frequency. Thermostatic control is turned on
        
        ; 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
        
        ; Custom settings are not defined
        
        ; Miscellaneous
        M911 S10 R11 P"M913 X0 Y0 G91 M83 G1 Z3 E-5 F1000" ; set voltage thresholds and actions to run on power loss
        
        

        Here is your homeall.g file using the tag:

        ; homeall.g
        ; called to home all axes
        ;
        ; generated by RepRapFirmware Configuration Tool v2.1.8 on Sun May 24 2020 20:05:38 GMT+0200 (Central European Summer Time)
        G91                      ; relative positioning
        G1 H2 Z10 F24000          ; lift Z relative to current position
        G1 H1 X-505 Y-505 F12000 ; move quickly to X and Y axis endstops and stop there (first pass)
        G1 H2 X5 Y5 F24000       ; go back a few mm
        G1 H1 X-505 Y-505 F240   ; move slowly to X and Y axis endstops once more (second pass)
        G1 H1 Z-505 F240         ; move Z down stopping at the endstop
        G90                      ; absolute positioning
        G92 Z-5.10                 ; set Z position to axis minimum (you may want to adjust this)
        
        ; Uncomment the following lines to lift Z after probing
        G91                     ; relative positioning
        G1 Z10 F400              ; lift Z relative to current position
        G90                     ; absolute positioning
        
        
        
        

        Printers: a small Utilmaker style, a small CoreXY and a E3D MS/TC setup. Various hotends. Using Duet 3 hardware running 3.4.6

        Thunderundefined 1 Reply Last reply Reply Quote 0
        • fcwiltundefined
          fcwilt @Thunder
          last edited by

          @Thunder said in Z calibration offset:

          Ok did some changes, would you take a look a the new files. 🙂homeall.g config.g bed.g

          Where is the your code to create the height map?

          Frederick

          Printers: a small Utilmaker style, a small CoreXY and a E3D MS/TC setup. Various hotends. Using Duet 3 hardware running 3.4.6

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          • Thunderundefined
            Thunder
            last edited by

            Ok, how about now ?[0_1612359597243_homeall (1).g](Uploading 100%)

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            • Thunderundefined
              Thunder @fcwilt
              last edited by

              @fcwilt Ok will do that 🙂

              fcwiltundefined 1 Reply Last reply Reply Quote 0
              • fcwiltundefined
                fcwilt @Thunder
                last edited by

                @Thunder said in Z calibration offset:

                @fcwilt Ok will do that 🙂

                Great.

                It looks like you attempted to post an updated homeall.g file but something went wrong.

                Frederick

                Printers: a small Utilmaker style, a small CoreXY and a E3D MS/TC setup. Various hotends. Using Duet 3 hardware running 3.4.6

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                • Thunderundefined
                  Thunder
                  last edited by

                  ; homeall.g
                  ; called to home all axes
                  ;
                  ; generated by RepRapFirmware Configuration Tool v2.1.8 on Sun May 24 2020 20:05:38 GMT+0200 (Central European Summer Time)
                  G91                      ; relative positioning
                  G1 H2 Z10 F24000          ; lift Z relative to current position
                  G1 H1 X-505 Y-505 F12000 ; move quickly to X and Y axis endstops and stop there (first pass)
                  G1 H2 X5 Y5 F24000       ; go back a few mm
                  G1 H1 X-505 Y-505 F240   ; move slowly to X and Y axis endstops once more (second pass)
                  G1 H1 Z-505 F240         ; move Z down stopping at the endstop
                  G90                      ; absolute positioning
                  G1 X100 Y100 F2000 ; put head over the centre of the bed, or wherever you want to probe
                  G30 ; lower head, stop when probe triggered and set Z to trigger height
                  
                  ; Uncomment the following lines to lift Z after probing
                  G91                     ; relative positioning
                  G1 Z10 F400              ; lift Z relative to current position
                  G90                     ; absolute positioning
                  
                  
                  
                  

                  Here is my file, also i dont understand "Where is the your code to create the height map?" ? I was folowing this guide :link text

                  fcwiltundefined 1 Reply Last reply Reply Quote 0
                  • fcwiltundefined
                    fcwilt
                    last edited by

                    @fcwilt said in Z calibration offset:

                    M574 Z 1

                    I don't use v2 firmware but I think that command above should be M574 Z1 S2

                    Frederick

                    Printers: a small Utilmaker style, a small CoreXY and a E3D MS/TC setup. Various hotends. Using Duet 3 hardware running 3.4.6

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                    • fcwiltundefined
                      fcwilt @Thunder
                      last edited by

                      @Thunder said in Z calibration offset:

                      G1 X100 Y100 F2000 ; put head over the centre of the bed, or wherever you want to probe
                      G30 ; lower head, stop when probe triggered and set Z to trigger height

                      I don't think X100 Y100 is going to put your probe over the center of the bed which is really the best place.

                      i dont understand "Where is the your code to create the height map?" ?

                      I guess you are issuing the G29 command from the DWC?

                      Printers: a small Utilmaker style, a small CoreXY and a E3D MS/TC setup. Various hotends. Using Duet 3 hardware running 3.4.6

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                      • Thunderundefined
                        Thunder
                        last edited by

                        Yes, this is right. Ok, came home and started the machine and a couple of settings were wrong. Now I have managed the home all to touch the probe for z and started the G29 S0
                        but I still get the same result. Can anybody point out what I am doing wrong? I am new to programming and this kind of setup.

                        System
                        My Printer
                        g29 s0
                        Status
                        Busy
                        Tool Position
                        X
                        346.4
                        Y
                        320.2
                        Z
                        7.15
                        Extruder Drives
                        Drive 0
                        0.0
                        Speeds
                        Requested Speed
                        3 mm/s
                        Top Speed
                        3 mm/s
                        Sensors
                        Vin
                        12.0 V
                        MCU Temperature
                        28.4 C
                        Fan RPM
                        0
                        Z-Probe
                        0
                         Tools
                         Extra
                         Control All
                        Tool	Heater	Current	Active	Standby
                        Tool 0 
                        T0 - Load Filament	Heater 1 
                        off	16.9 C	
                        0
                        0
                        Bed	Heater 0 
                        off	18.2 C	
                        0
                        0
                        Temperature Chart
                        System Directory
                        0:/sys/config.g
                        ; Configuration file for Duet WiFi (firmware version 2.03)
                        ; executed by the firmware on start-up
                        ;
                        ; generated by RepRapFirmware Configuration Tool v2.1.8 on Sun May 24 2020 20:05:38 GMT+0200 (Central European Summer Time)
                        
                        ; General preferences
                        G90                                                ; send absolute coordinates...
                        M83                                                ; ...but relative extruder moves
                        M550 P"My Printer"                                 ; set printer name
                        
                        ; Network
                        M551 P"GoBevk"                                     ; set password
                        M552 S1                                            ; enable network
                        M586 P0 S1                                         ; enable HTTP
                        M586 P1 S0                                         ; disable FTP
                        M586 P2 S0                                         ; disable Telnet
                        
                        ; Drives
                        M569 P0 S0                                         ; physical drive 0 goes backwards
                        M569 P1 S0                                         ; physical drive 1 goes backwards
                        M569 P2 S1                                         ; physical drive 2 goes forwards
                        M569 P3 S1                                         ; physical drive 3 goes forwards
                        M584 X0 Y1 Z2 E3                                   ; set drive mapping
                        M350 X16 Y16 Z16 E16 I1                            ; configure microstepping with interpolation
                        M92 X160.00 Y80.00 Z800.00 E837                   ; set steps per mm
                        M566 X900.00 Y900.00 Z12.00 E120.00                ; set maximum instantaneous speed changes (mm/min)
                        M203 X6000.00 Y6000.00 Z180.00 E1200.00            ; set maximum speeds (mm/min)
                        M201 X500.00 Y500.00 Z20.00 E250.00                ; set accelerations (mm/s^2)
                        M906 X1400 Y1700 Z1400 E800 I50                    ; set motor currents (mA) and motor idle factor in per cent
                        M84 S50                                       ; Set idle timeout
                        
                        ;Bl-touch heaters
                        M307 H3 A-1 C-1 D-1                                ; disable heater on PWM channel for BLTouch
                        
                        ; Axis Limits
                        M208 X0 Y0 Z0 S1                                   ; set axis minima
                        M208 X500 Y500 Z500 S0                             ; set axis maxima
                        
                        ; Endstops
                        M574 X1 Y1 S1;                                   ; set active high endstops
                        M574 Z1 S2;
                        
                        
                        ; Z-Probe
                        M558 P9 H5 F500 T4000 X0 Y0 Z1                     ; set Z probe type to bltouch and the dive height + speeds
                        G31 P500 X-66.4 Y-10.2 Z2.15                       ; set Z probe trigger value, offset and trigger height
                        M557 X70:433.6 Y70:498.8 S30                           ; define mesh grid
                        
                        ; Heaters
                        M305 P0 T100000 B4138 R4700                        ; set thermistor + ADC parameters for heater 0
                        M143 H0 S120                                       ; set temperature limit for heater 0 to 120C
                        M305 P1 T100000 B4138 R4700                        ; set thermistor + ADC parameters for heater 1
                        M143 H1 S280                                       ; set temperature limit for heater 1 to 280C
                        
                        ; Fans
                        M106 P0 S0 I0 F500 H-1                             ; set fan 0 value, PWM signal inversion and frequency. Thermostatic control is turned off
                        M106 P1 S1 I0 F500 H1 T45                          ; set fan 1 value, PWM signal inversion and frequency. Thermostatic control is turned on
                        
                        ; 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
                        
                        
                        
                        ; Custom settings are not defined
                        
                        ; Miscellaneous
                        M911 S10 R11 P"M913 X0 Y0 G91 M83 G1 Z3 E-5 F1000" ; set voltage thresholds and actions to run on power loss
                        
                        
                        
                        
                        ; homeall.g
                        ; called to home all axes
                        ;
                        ; generated by RepRapFirmware Configuration Tool v2.0.4 on Sun Sep 15 2019 21:01:39 GMT+0200 (Central European Summer Time)
                        G91 ; relative positioning
                        G1 Z5 F6000 S2 ; lift Z relative to current position
                        G1 S1 X-500 Y-500 F1800 ; move quickly to X and Y axis endstops and stop there (first pass)
                        G1 X5 Y5 F6000 ; go back a few mm
                        G1 S1 X-235 Y-215 F360 ; move slowly to X and Y axis endstops once more (second pass)
                        G90 ; absolute positioning
                        G1 X250 Y250 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 S2 Z20 F100 ; lift Z relative to current position
                        G90 ; absolute positioning
                        

                        Thanks in advance 🙂

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                        • Thunderundefined
                          Thunder
                          last edited by

                          And here is the picture 🙂
                          1.JPG

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                          • fcwiltundefined
                            fcwilt
                            last edited by

                            @Thunder said in Z calibration offset:

                            G1 X250 Y250 F6000 ; go to first bed probe point and home Z

                            For now that G1 command above is OK but it doesn't take into account the z probe X and Y offsets - so you're getting close to the center of the bed but you're not at the center.

                            You have to be sure that G30 is setting the Z co-ordinate correctly before G29 will work as desired.

                            So do the following:

                            After the G30 in homeall.g comment out the G91 and the G1 commands.

                            Run homeall.g and see what the Z co-ordinate readout in the DWC is after the execution of G30.

                            Verify that it is correct either by measuring the gap between the nozzle and the bed OR jog down to Z=0 and see if the nozzle is just touching the bed.

                            Let me know what you find.

                            Frederick

                            Printers: a small Utilmaker style, a small CoreXY and a E3D MS/TC setup. Various hotends. Using Duet 3 hardware running 3.4.6

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                            • Thunderundefined
                              Thunder
                              last edited by

                              Ok, I have now managed the calibration. But when I start the program from the slicer I get the Error: M375: Heightmap file bareplate.csv not found I think this means my startup code is not ok
                              1.JPG
                              2.JPG

                              thank you 🙂

                              fcwiltundefined 1 Reply Last reply Reply Quote 0
                              • fcwiltundefined
                                fcwilt @Thunder
                                last edited by

                                @Thunder

                                Well you must have a command somewhere like this G29 S1 P"bareplate.scv".

                                For that to work at some point you would have to created that file with G29 S3 P"bareplate.csv".

                                Did you do so?

                                Frederick

                                Printers: a small Utilmaker style, a small CoreXY and a E3D MS/TC setup. Various hotends. Using Duet 3 hardware running 3.4.6

                                Thunderundefined 1 Reply Last reply Reply Quote 0
                                • Thunderundefined
                                  Thunder @fcwilt
                                  last edited by

                                  @fcwilt

                                  Ok i checked and you are right. In the startup i had a M375 command. I deleted the line and replaced the command with G29 S1. And now my next question if load the g code of a part for printing the machine homes and makes the printer use the height map that i did eariler with G29 S0. But my nozzle is stil a few 0.1 mm from build plate. Do i correct this with baby steps ?

                                  Thanks for all of your input 🙂

                                  fcwiltundefined 1 Reply Last reply Reply Quote 0
                                  • fcwiltundefined
                                    fcwilt @Thunder
                                    last edited by

                                    @Thunder said in Z calibration offset:

                                    And now my next question if load the g code of a part for printing the machine homes and makes the printer use the > height map that i did eariler with G29 S0. But my nozzle is stil a few 0.1 mm from build plate. Do i correct this with baby

                                    Refresh my memory please.

                                    When creating the height map do you have commands something like these:

                                    G90
                                    G1 Xaaa Ybbb ; move the z probe to the center of the bed
                                    G30          ; set the Z=0 datum
                                    G29          ; probe the bed and create the height map
                                    

                                    When loading the height map do you have commands something like these:

                                    G90
                                    G1 Xaaa Ybbb ; move the z probe to the center of the bed
                                    G30          ; set the Z=0 datum
                                    G29 S1       ; load the height map
                                    

                                    Frederick

                                    Printers: a small Utilmaker style, a small CoreXY and a E3D MS/TC setup. Various hotends. Using Duet 3 hardware running 3.4.6

                                    Thunderundefined 1 Reply Last reply Reply Quote 0
                                    • Thunderundefined
                                      Thunder @fcwilt
                                      last edited by

                                      @fcwilt

                                      Yes like the last one, this code is in slicer start program.

                                      fcwiltundefined 1 Reply Last reply Reply Quote 0
                                      • fcwiltundefined
                                        fcwilt @Thunder
                                        last edited by

                                        @Thunder said in Z calibration offset:

                                        @fcwilt

                                        Yes like the last one, this code is in slicer start program.

                                        Great.

                                        How about when creating the height map?

                                        The G30 for creating and loading need to use the exact same X and Y position.

                                        Frederick

                                        Printers: a small Utilmaker style, a small CoreXY and a E3D MS/TC setup. Various hotends. Using Duet 3 hardware running 3.4.6

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                                        • Thunderundefined
                                          Thunder
                                          last edited by

                                          Do you mean in the home all section? Sorry I am a little slow when programing 🙂

                                          fcwiltundefined 1 Reply Last reply Reply Quote 0
                                          • fcwiltundefined
                                            fcwilt @Thunder
                                            last edited by

                                            @Thunder said in Z calibration offset:

                                            Do you mean in the home all section? Sorry I am a little slow when programing 🙂

                                            I don't know where you create the height map.

                                            I have a pair of files that I created called mech_comp_map_create.g and mesh_comp_map_load.g.

                                            The first is invoked from a DWC macro as I create the height map manually.

                                            The second is invoked from another file that I created called print_begin.g which is invoked by the slicer at the start of a print.

                                            The essential commands in mech_comp_map_create.g are below

                                            G90
                                            G1 Xaaa Ybbb ; move the z probe to the center of the bed
                                            G30          ; set the Z=0 datum
                                            G29          ; probe the bed and create the height map
                                            

                                            The essential commands in mech_comp_map_load.g are below

                                            G90
                                            G1 Xaaa Ybbb ; move the z probe to the center of the bed
                                            G30          ; set the Z=0 datum
                                            G29 S1       ; load the height map
                                            

                                            The important thing to notice is that G30 must be used before creating (G29) or loading (G29 S1) the height map.

                                            Frederick

                                            Printers: a small Utilmaker style, a small CoreXY and a E3D MS/TC setup. Various hotends. Using Duet 3 hardware running 3.4.6

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