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    Z-probe not moving down to touch the bed

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    Duet Hardware and wiring
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    • Brouwiundefined
      Brouwi
      last edited by

      Hi guys,

      I am new here and looking forward to contribute.

      I have an FLSun QQ-S Pro and installed a DUET 2 ethernet this week. Currently I have 2 issues. Homing & Probing
      Homing;
      When I press "home all axis" and the printer has to move a larger distance. It stops homing after the first endstop is triggered. After I press it a second time it homes on all Endstops. Suggestions?
      Probing;
      I have the Z-probe connected and everything works almost as expected. Except for the triggering move. The probe moves across the bed without moving downward to actually click the trigger. Suggestions?

      My 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 Fri May 29 2020 13:42:29 GMT+0200 (Midden-Europese zomertijd)

      ; General preferences
      G90 ; send absolute coordinates...
      M83 ; ...but relative extruder moves
      M550 P"QQ-S PRO" ; set printer name
      M665 R140.8 L280 B130 H450 ; 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
      M552 P0.0.0.0 S1 ; enable network and acquire dynamic address via DHCP
      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 S0 ; physical drive 2 goes backwards
      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 X80.00 Y80.00 Z80.00 E663.00 ; set steps per mm
      M566 X1200.00 Y1200.00 Z1200.00 E1200.00 ; set maximum instantaneous speed changes (mm/min)
      M203 X18000.00 Y18000.00 Z18000.00 E1200.00 ; set maximum speeds (mm/min)
      M201 X1000.00 Y1000.00 Z1000.00 E1000.00 ; set accelerations (mm/s^2)
      M906 X1000 Y1000 Z1000 E800 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
      M558 P4 H0 F120 T3000 I1 ; set Z probe type to switch and the dive height + speeds
      G31 P500 X0 Y0 Z16.200 ; set Z probe trigger value, offset and trigger height
      M557 R120 S20 ; define mesh grid

      ; Heaters
      M307 H0 B0 S1.00 ; disable bang-bang mode for the bed heater and set PWM limit
      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 H1 T45 ; set fan 0 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
      T0 ; select first tool*

      My Bed.g
      *; bed.g
      ; called to perform automatic delta calibration via G32
      ;
      ; generated by RepRapFirmware Configuration Tool v2.1.8 on Fri May 29 2020 13:42:29 GMT+0200 (Midden-Europese zomertijd)
      M561 ; clear any bed transform
      G28 ; home all towers
      ; Probe the bed at 3 peripheral and 3 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 Y84.9 H-5 Z-99999
      G30 P1 X73.53 Y-42.45 H0 Z-99999
      G30 P2 X-73.53 Y-42.45 H-10 Z-99999
      G30 P3 X0 Y42.4 H0 Z-99999
      G30 P4 X36.72 Y-21.2 H-10 Z-99999
      G30 P5 X-36.72 Y-21.2 H0 Z-99999
      G30 P6 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)
      *

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      • Phaedruxundefined
        Phaedrux Moderator
        last edited by

        Please post your homedelta.g file.

        What firmware version are you using?

        What type of probe is it?

        What do you have in your slicer start gcode?

        Z-Bot CoreXY Build | Thingiverse Profile

        Brouwiundefined 1 Reply Last reply Reply Quote 0
        • Brouwiundefined
          Brouwi @Phaedrux
          last edited by

          @Phaedrux Thanks for your reply!

          ; homedelta.g
          ; called to home all towers on a delta printer
          ;
          ; generated by RepRapFirmware Configuration Tool v2.1.8 on Fri May 29 2020 13:42:29 GMT+0200 (Midden-Europese zomertijd)
          G91 ; relative positioning
          G1 H1 X450 Y450 Z450 F1800 ; move all towers to the high end stopping at the endstops (first pass)
          G1 H2 X-5 Y-5 Z-5 F1800 ; go down a few mm
          G1 H1 X10 Y10 Z10 F360 ; move all towers up once more (second pass)
          G1 Z-5 F6000 ; move down a few mm so that the nozzle can be centred
          G90 ; absolute positioning
          G1 X0 Y0 F6000 ; move X+Y to the centre

          What firmware version are you using?
          firmware version 2.03
          What type of probe is it?
          It is a digital switch that comes standard with the printer. So i don't level before every print as the bed on my printer is fixed.
          What do you have in your slicer start gcode?
          Not there yet, I just put in the board and trying to get it to work. I haven't printed anyhting yet.

          Carloundefined 1 Reply Last reply Reply Quote 0
          • Carloundefined
            Carlo @Brouwi
            last edited by Carlo

            @Brouwi
            does it flash as triggered in DWC dashboard then move ? as you may need to invert the switch
            Also your dive height is 0 set it to 25
            M558 P4 H0 F120 T3000 I1

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