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    Z probe already triggered at start of probing move

    Scheduled Pinned Locked Moved
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    • Phaedruxundefined
      Phaedrux Moderator
      last edited by

      What does it do if you send it the self test servo command?

      Z-Bot CoreXY Build | Thingiverse Profile

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      • hinderenceundefined
        hinderence
        last edited by

        Bounces in and out. No errors.

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        • Phaedruxundefined
          Phaedrux Moderator
          last edited by

          I'm at a bit of a loss then. If the pin was dirty and getting stuck a bit that would explain it triggering before it should but if the self test works fine then that would indicate the pin is fine. The servo commands work as expected so the wiring would appear to be ok.

          Can you post your config files again as they are currently?

          Z-Bot CoreXY Build | Thingiverse Profile

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          • hinderenceundefined
            hinderence
            last edited by

            Sure thing:
            Config.g
            ; Configuration file for Duet WiFi (firmware version 1.20 or newer)
            ; executed by the firmware on start-up
            ;
            ; generated by RepRapFirmware Configuration Tool on Sat Jul 07 2018 15:37:48 GMT-0700 (Pacific Daylight Time)

            ; General preferences
            G90 ; Send absolute coordinates...
            M83 ; ...but relative extruder moves

            ;*** The homed height is deliberately set too high in the following - you will adjust it during calibration.
            M665 R155 L397.19 B155 H525 ; Set delta radius, diagonal rod length, printable radius and homed height
            M666 X0 Y0 Z0 ; Put your endstop adjustments here, or let auto calibration find them

            ; Network
            M550 PTLM ; Set machine name
            M552 S1 ; Enable network
            M586 P0 S1 ; Enable HTTP
            M586 P1 S1 ; Enable FTP
            M586 P2 S1 ; Enable Telnet

            ; Drives
            M569 P0 S1 ; Drive 0 goes forwards
            M569 P1 S1 ; Drive 1 goes forwards
            M569 P2 S1 ; Drive 2 goes forwards
            M569 P3 S1 ; Drive 3 goes forwards
            M350 X16 Y16 Z16 E16 I1 ; Configure microstepping with interpolation
            M92 X80 Y80 Z80 E425 ; Set steps per mm
            M566 X1200 Y1200 Z1200 E1200 ; Set maximum instantaneous speed changes (mm/min)
            M203 X18000 Y18000 Z18000 E1200 ; Set maximum speeds (mm/min)
            M201 X1000 Y1000 Z1000 E1000 ; Set accelerations (mm/s^2)
            M906 X1200 Y1200 Z1200 E1200 I30 ; Set motor currents (mA) and motor idle factor in per cent
            M84 S30 ; Set idle timeout

            ; Axis Limits
            M208 Z0 S1 ; Set minimum Z

            ; Endstops
            M574 X2 Y2 Z2 S1 ; Set active high endstops

            ; Z-Probe
            M307 H3 A-1 C-1 D-1 ; Disable heater on PWM channel for BLTouch
            M558 P9 H5 F100 T2000 A5 R0.1 ; P9 for BLTouch, dive height 5mm, probe at 100mm/min, travel 6000mm/min, up to 5 probes, pause 0.1s
            G31 X0 Y20 Z0 P25 ; Set Z probe trigger value, offset and trigger height
            M557 R150 S45 ; Define mesh grid

            ; Heaters
            M305 P0 T100000 B4138 C0 R4700 ; Set thermistor + ADC parameters for heater 0
            M143 H0 S120 ; Set temperature limit for heater 0 to 120C
            M305 P1 T100000 B4138 C0 R4700 ; Set thermistor + ADC parameters for heater 1
            M143 H1 S280 ; Set temperature limit for heater 1 to 280C

            ; Fans
            M106 P0 S0.3 I0 F500 H-1 ; Set fan 0 value, PWM signal inversion and frequency. Thermostatic control is turned off
            M106 P1 S1 I0 F500 H-1 ; Set fan 1 value, PWM signal inversion and frequency. Thermostatic control is turned off
            M106 P2 S1 I0 F500 H0 T50 ; Set fan 2 value, PWM signal inversion and frequency. Thermostatic control is turned on

            ; Tools
            M563 P0 D0 H1 ; 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

            ; Automatic power saving
            M911 S10 R11 P"M913 X0 Y0 G91 M83 G1 Z3 E-5 F1000" ; Set voltage thresholds and actions to run on power loss

            ; Custom settings
            M591 D0 C3 P2 E6.0

            ; Miscellaneous
            M501 ; Load saved parameters from non-volatile memory

            ;bed.g
            ; called to perform automatic delta calibration via G32
            ;
            ; generated by RepRapFirmware Configuration Tool on Sat Jul 07 2018 15:37:48 GMT-0700 (Pacific Daylight Time)
            M561 ; clear any bed transform
            G28 ; home all towers
            ;M280 P3 S160 I1 ; Clear any errors in BLTouch
            G0 Z400 ; Move while giving the BLTouch time to clear the error
            ;M98 Pdeployprobe.g ; deploy mechanical Z probe
            ; Probe the bed at 6 peripheral and 6 halfway points, and perform 6-factor auto compensation
            ; Before running this, you should have set up your Z-probe trigger height to suit your build, in the G31 command in config.g.
            G30 P0 X0 Y132.28 H0 Z-99999
            G30 P1 X121 Y69.86 H0 Z-99999
            G30 P2 X129.9 Y-75 H0 Z-99999
            G30 P3 X0 Y-150 H0 Z-99999
            G30 P4 X-129.9 Y-75 H0 Z-99999
            G30 P5 X-121 Y69.86 H0 Z-99999
            G30 P6 X0 Y59.15 H0 Z-99999
            G30 P7 X56.09 Y32.38 H0 Z-99999
            G30 P8 X64.95 Y-37.5 H0 Z-99999
            G30 P9 X0 Y-75 H0 Z-99999
            G30 P10 X-64.95 Y-37.5 H0 Z-99999
            G30 P11 X-56.09 Y32.38 H0 Z-99999
            G30 P12 X0 Y0 H0 Z-99999 S6
            ; Use S-1 for measurements only, without calculations. Use S4 for endstop heights and Z-height only. Use S6 for full 6 factors
            ; If your Z probe has significantly different trigger heights depending on XY position, adjust the H parameters in the G30 commands accordingly. The value of each H parameter should be (trigger height at that XY position) - (trigger height at centre of bed)
            ;M98 Pretractprobe.g ; retract mechanical Z probe
            G29

            ; deployprobe.g
            ; called to deploy a physical Z probe
            ;
            ; generated by RepRapFirmware Configuration Tool on Sat Jul 07 2018 15:37:48 GMT-0700 (Pacific Daylight Time)
            ;M280 P3 S160 I1
            M280 P3 S10 I1

            ; retractprobe.g
            ; called to retract a physical Z probe
            ;
            ; generated by RepRapFirmware Configuration Tool on Sat Jul 07 2018 15:37:48 GMT-0700 (Pacific Daylight Time)
            M280 P3 S90 I1

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            • Phaedruxundefined
              Phaedrux Moderator
              last edited by

              Everything looks ok to me.

              One question that I'm not sure matters or not because I'm not familiar with deltas but you have axis minima set but not maxima. Is that normal for deltas?

              Hopefully someone with more experience with the Tevo little monster and the BLTouch will chime in.

              Z-Bot CoreXY Build | Thingiverse Profile

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              • hinderenceundefined
                hinderence
                last edited by

                If i had a bad crimp on say pin1, pin2, or pin 8 on the duet, do you think that could cause it?

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                • Phaedruxundefined
                  Phaedrux Moderator
                  last edited by

                  Anything is possible. Going back to the start and verify the wiring would be my next step.

                  Z-Bot CoreXY Build | Thingiverse Profile

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                  • dc42undefined
                    dc42 administrators
                    last edited by

                    Check the crimp on the white wire in particular, and make sure you have connected it to the correct pin on the Z probe connector as shown here.

                    alt text

                    Duet WiFi hardware designer and firmware engineer
                    Please do not ask me for Duet support via PM or email, use the forum
                    http://www.escher3d.com, https://miscsolutions.wordpress.com

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                    • RafBundefined
                      RafB
                      last edited by

                      Hello
                      I have exactly the same problem, have you solved your problem and if so, can you tell me how did you do it?

                      thank you in advance

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                      • hinderenceundefined
                        hinderence
                        last edited by

                        Got it solved. The code changes form Phaedrux helped a bunch, but the white wire dc42 recommended was ultimately the culprit.

                        Thanks both for your help!

                        now to finish calibrating it.

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