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    HELP WITH HEIGHT MAP HAS SUBSTANTIAL Z OFFSET WARNING

    Scheduled Pinned Locked Moved
    Tuning and tweaking
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    • Jaw8850undefined
      Jaw8850 @Veti
      last edited by

      @Veti
      I see it now. I used the configurator then did PID and thought I was good. How does this look?

      ; Heaters
      M308 S0 P"bedtemp" Y"thermistor" T100000 B4725 C7.060000e-8 ; configure sensor 0 as thermistor on pin bedtemp
      M950 H0 C"bedheat" Q10 T0 ; create bed heater output on bedheat and map it to sensor 0
      M307 H0 R1.115 C329.1 D4.73 S1.00 V24.2 ; disable bang-bang mode for the bed heater and set PWM limit
      M140 H0 ; map heated bed to heater 0
      M143 H0 S200 ; set temperature limit for heater 0 to 200C
      M308 S1 P"e0temp" Y"thermistor" T100000 B4725 C7.060000e-8 ; configure sensor 1 as thermistor on pin e0temp
      M950 H1 C"e0heat" T1 ; create nozzle heater output on e0heat and map it to sensor 1
      M307 H1 R1.415 C284.6 D6.03 S1.00 V24.2 ; disable bang-bang mode for heater and set PWM limit
      M143 H1 S300 ; set temperature limit for heater 1 to 300C

      M570 S360 ; Heater fault detections allow 1 minute

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      • Vetiundefined
        Veti
        last edited by

        dont forget to pid tune again. because you were operating at the wrong temperature

        Jaw8850undefined 1 Reply Last reply Reply Quote 0
        • Jaw8850undefined
          Jaw8850 @Veti
          last edited by

          @Veti
          I will definitely do that. I'm just fighting this homing mess. G28 Z throws an error and says insufficient axes homed. this is after I did G28 Y and G28 X it won't let me use G28 Z

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          • Vetiundefined
            Veti
            last edited by

            thats because you modified the homez and removed the H2 part

            Jaw8850undefined 1 Reply Last reply Reply Quote 0
            • Jaw8850undefined
              Jaw8850 @Veti
              last edited by

              @Veti
              Thank You!!!!!!!!! I truly appreciate your help. Now I have a baseline I can build from. PID tune in progress

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              • Jaw8850undefined
                Jaw8850
                last edited by

                @Veti
                OK, I have re-run PID tuning on bed 1st then hotend. I have trimmed down my config files I believe. I am running G32 which homes all then probes center then probes each side lead screws. I then run G1 X137 Y156 Z5 to move the print head to the center of the bed. I then run G30 to get a zero value followed by G29. When done my mesh is a mess and the original z in the center of the bed is WAY BELOW 0, like -.962. any ideas what may cause this? I am running a mini IR probe and probing each spot 5 times with an S value of 0. I am probing a black textured pei sheet.

                BedLevel.PNG

                config.g
                bed.g
                homeall.g
                homez.g

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                • Phaedruxundefined
                  Phaedrux Moderator
                  last edited by

                  Can you show a photo of your bed surface?

                  Was it working at all before you updated from 2.05?

                  Taking a look at your latest files now.

                  Z-Bot CoreXY Build | Thingiverse Profile

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                  • Phaedruxundefined
                    Phaedrux Moderator
                    last edited by

                    I notice you have S0 in your M558. Delete that. The default is 0.03 and I don't think 0 is a valid way to use it.

                    Can you also post the results of M122 and M98 P"config.g"?

                    Z-Bot CoreXY Build | Thingiverse Profile

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                    • Phaedruxundefined
                      Phaedrux Moderator
                      last edited by

                      By the way, if you're using stall detection for X and Y you really only need to make a single pass. A slower second pass makes no sense in this context since a good stall needs a short sharp shock.

                      M913 X50 Y50 Z50	    ; drop motor currents to 50%
                      M915 X Y S3 R0	    	; set sensitivity to +3 unfiltered
                      G1 H1 X-305  F4800    	; move X all the way left and stop at end
                      G4 P250                 ; wait 250msec
                      G1 X10 F12000	        ; go back a few mm
                      G4 P250                 ; wait 250msec
                      G1 H1 X-305  F4800    	; move slowly to X axis endstop once more (second pass)
                      G1 X10 F12000	        ; go back a few mm
                      G4 P500                 ; wait 500msec
                      G1 H1 Y-305  F4800	    ; move Y all the way forward and stop at end
                      G1 Y10 F12000	        ; go back a few mm
                      G1 H1 Y-305  F4800    	; move slowly to Y axis endstop once more (second pass)
                      G4 P500                 ; wait 500msec
                      G0 X127 Y142	F12000  ; go to back center of bed for measurement
                      G4 P500                 ; wait 500msec
                      

                      Z-Bot CoreXY Build | Thingiverse Profile

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                      • Jaw8850undefined
                        Jaw8850 @Phaedrux
                        last edited by Phaedrux

                        @Phaedrux
                        Thank you, I've taken out the S, and changed up Home All and HomeY and HomeX

                        Here is M122

                        1/8/2021, 8:06:43 PM	M122
                        === Diagnostics ===
                        RepRapFirmware for Duet 2 WiFi/Ethernet version 3.2 running on Duet Ethernet 1.02 or later
                        Board ID: 08DGM-9T6BU-FG3S0-7JTD8-3S06N-KB4BD
                        Used output buffers: 3 of 24 (16 max)
                        === RTOS ===
                        Static ram: 23460
                        Dynamic ram: 68864 of which 100 recycled
                        Never used RAM 19656, free system stack 104 words
                        Tasks: NETWORK(ready,185) HEAT(blocked,309) MAIN(running,400) IDLE(ready,19)
                        Owned mutexes:
                        === Platform ===
                        Last reset 00:30:06 ago, cause: software
                        Last software reset at 2021-01-08 19:36, reason: User, GCodes spinning, available RAM 19864, slot 2
                        Software reset code 0x0003 HFSR 0x00000000 CFSR 0x00000000 ICSR 0x0041f000 BFAR 0xe000ed38 SP 0x00000000 Task MAIN Freestk 0 n/a
                        Error status: 0x00
                        Aux0 errors 0,0,0
                        MCU temperature: min 33.8, current 34.6, max 35.5
                        Supply voltage: min 24.1, current 24.2, max 24.3, under voltage events: 0, over voltage events: 0, power good: yes
                        Driver 0: position 81011, standstill, SG min/max 0/352
                        Driver 1: position 5994, standstill, SG min/max 0/348
                        Driver 2: position 16295, standstill, SG min/max 0/1023
                        Driver 3: position 0, standstill, SG min/max not available
                        Driver 4: position 0, standstill, SG min/max 0/1023
                        Driver 5: position 0
                        Driver 6: position 0
                        Driver 7: position 0
                        Driver 8: position 0
                        Driver 9: position 0
                        Driver 10: position 0
                        Driver 11: position 0
                        Date/time: 2021-01-08 20:06:40
                        Cache data hit count 2734090471
                        Slowest loop: 295.16ms; fastest: 0.17ms
                        I2C nak errors 0, send timeouts 0, receive timeouts 0, finishTimeouts 0, resets 0
                        === Storage ===
                        Free file entries: 10
                        SD card 0 detected, interface speed: 20.0MBytes/sec
                        SD card longest read time 2.0ms, write time 18.7ms, max retries 0
                        === Move ===
                        DMs created 83, maxWait 392107ms, bed compensation in use: mesh, comp offset 0.000
                        === MainDDARing ===
                        Scheduled moves 492, completed moves 492, hiccups 0, stepErrors 0, LaErrors 0, Underruns [0, 0, 6], CDDA state -1
                        === AuxDDARing ===
                        Scheduled moves 0, completed moves 0, hiccups 0, stepErrors 0, LaErrors 0, Underruns [0, 0, 0], CDDA state -1
                        === Heat ===
                        Bed heaters = 0 -1 -1 -1, chamberHeaters = -1 -1 -1 -1
                        === GCodes ===
                        Segments left: 0
                        Movement lock held by null
                        HTTP is idle in state(s) 0
                        Telnet is idle in state(s) 0
                        File is idle in state(s) 0
                        USB is idle in state(s) 0
                        Aux is idle in state(s) 0
                        Trigger is idle in state(s) 0
                        Queue is idle in state(s) 0
                        LCD is idle in state(s) 0
                        Daemon is idle in state(s) 0
                        Autopause is idle in state(s) 0
                        Code queue is empty.
                        === Network ===
                        Slowest loop: 295.42ms; fastest: 0.02ms
                        Responder states: HTTP(0) HTTP(0) HTTP(0) HTTP(0) FTP(0) Telnet(0), 0 sessions
                        HTTP sessions: 1 of 8
                        Interface state active, link 100Mbps full duplex
                        

                        homeall (1).g
                        homex.g
                        homey.g

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                        • Jaw8850undefined
                          Jaw8850 @Phaedrux
                          last edited by

                          @Phaedrux

                          Here is result of M98"config.g"

                          1/8/2021, 8:08:09 PM m98 P"config.g"
                          HTTP is enabled on port 80
                          FTP is disabled
                          TELNET is disabled
                          Error: Pin 'fan1' is not free
                          Error: Fan number 2 not found

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                          • Phaedruxundefined
                            Phaedrux Moderator
                            last edited by

                            G30 Z ; home z by probing the bed
                            G1 H1 Z3 ; lower bed for clearance

                            In your homeall there are two things that aren't right.

                            First G30 doesn't need Z. G30 by itself just means probe z at the current location.

                            and you definitely don't want G1 H1 Z3 there. The H1 is a homing move. In your case both these things don't really have any effect, but figured you should know.

                            If you want to raise the Z axis to a certain height at that point just use G1 Z

                            Z-Bot CoreXY Build | Thingiverse Profile

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                            • Phaedruxundefined
                              Phaedrux Moderator @Jaw8850
                              last edited by Phaedrux

                              @Jaw8850 said in HELP WITH HEIGHT MAP HAS SUBSTANTIAL Z OFFSET WARNING:

                              Error: Pin 'fan1' is not free
                              Error: Fan number 2 not found

                              Looks like you've got some fan problems too.

                              M950 F1 C"fan1" Q500                               ; create fan 1 on pin fan1 and set its frequency
                              M106 P1 S1 H1 T70                                  ; set fan 1 value. Thermostatic control is turned on
                              M950 F2 C"fan1" Q500                               ; create fan 2 on pin fan1 and set its frequency
                              M106 P2 S0.5 H1 T60                                ; set fan 2 value. Thermostatic control is turned on
                              

                              You're using fan1 twice. One of them is probably supposed to be fan2.

                              Z-Bot CoreXY Build | Thingiverse Profile

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                              • Phaedruxundefined
                                Phaedrux Moderator
                                last edited by Phaedrux

                                The position that you use to probe the Z axis should be the same between homeall and homez. It should also be the same point you use for the G30 before running G29.

                                G1 X137 Y156 F2000 ; put head over the centre of the bed, or wherever you want to probe

                                G0 X127 Y142 F12000 ; go to back center of bed for measurement

                                Z-Bot CoreXY Build | Thingiverse Profile

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                                • Jaw8850undefined
                                  Jaw8850 @Phaedrux
                                  last edited by

                                  @Phaedrux
                                  Got the fans sorted, thank you
                                  1/8/2021, 8:20:45 PM m98 P"config.g"
                                  HTTP is enabled on port 80
                                  FTP is disabled
                                  TELNET is disabled

                                  and I adjusted the Homez and homeall to match

                                  config.g
                                  bed.g
                                  homeall.g
                                  homez.g

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                                  • Jaw8850undefined
                                    Jaw8850 @Phaedrux
                                    last edited by

                                    @Phaedrux

                                    Reference a Mesh Bed Leveling Macro, does this look right? I commented out the temperature settings until I know it's probing correctly etc.

                                    M561 ; clear any bed transform
                                    ;M140 S70 ; Start Heating the bed
                                    ;M109 S200 ; Start Heating the nozzle
                                    G32 ; Home all & adjust lead screws
                                    G1 X137 Y156 Z5 ; move to center of the bed
                                    G30 ; probe Z
                                    G29 ; run mesh bed leveling
                                    G1 H1 X240 Y240 Z50
                                    ;M140 S0
                                    ;M109 S0

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                                    • Jaw8850undefined
                                      Jaw8850 @Phaedrux
                                      last edited by

                                      @Phaedrux
                                      Here is a picture of my bed surface. I also have a buildtak flexplate with PEI on it but it's translucent yellow and shiny in spots, I was going to wetsand it with 1000 grit to try and dull it out if I can't get this textured sheet to work
                                      20210108_200402.jpg

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                                      • Phaedruxundefined
                                        Phaedrux Moderator
                                        last edited by

                                        G30 Z					; lower head, stop when probe triggered and set Z to trigger height
                                        G1 Z5 F4000             ; lower Z 5mm
                                        G30 Z                   ; lower head, stop when probe triggered and set Z to trigger height (second pass)
                                        

                                        In homez you still have the G30 Z. Also, if you want it to do two passes, say a fast pass and then a slower pass use something like this

                                        M558 F500 A1 ; set fast single dive speed
                                        G30 ; probe the bed
                                        M558 F60 A5 ; set slow multi dive speed
                                        G30
                                        

                                        That gets you a fast first z homing and then a slower more accurate one.

                                        In your homeall, you should remove this line

                                        G1 H1 X10 ;move X away from frame to home Y

                                        Your mesh macro looks ok, but instead of this

                                        G1 X137 Y156 Z5 ; move to center of the bed
                                        G30 ; probe Z

                                        you could just use G28 Z to home the z axis

                                        Z-Bot CoreXY Build | Thingiverse Profile

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                                        • Phaedruxundefined
                                          Phaedrux Moderator
                                          last edited by

                                          Have you recently remeasured your trigger height?

                                          G31 X-27 Y0 Z2.062 P500

                                          Z-Bot CoreXY Build | Thingiverse Profile

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                                          • Phaedruxundefined
                                            Phaedrux Moderator
                                            last edited by

                                            As for the bed surface a good way to test if it's a factor you can place a plane piece of paper over the bed and see if the mesh looks much different.

                                            The white lines might have an effect and it looks a bit shiny. Hard to say.... best to test with something matte.

                                            Z-Bot CoreXY Build | Thingiverse Profile

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