Duet 3. Probe inconsistancy



  • My probe seems super inconsistant. Genuine from filastruder. It triggers super high. 12.mm and then I get readings that range up to 4mm difference. Bed is PEI over sheet metal. Painted matte black underneath the PEI. I have used another surface. Same without the black matte and there is no difference. Config.g
    ; Configuration file for Duet 3 (firmware version 3)
    ; executed by the firmware on start-up
    ;
    ; generated by RepRapFirmware Configuration Tool v3.1.3 on Tue Jun 16 2020 08:02:01 GMT-0700 (Pacific Daylight Time)

    ; General preferences
    G90 ; send absolute coordinates...
    M83 ; ...but relative extruder moves
    G21 ; Set units to MM
    M550 P"Duet 3" ; set printer name
    M669 K1 ; select CoreXY mode

    ;Network
    M552 S1 ; enable network
    M586 P0 S1 ; enable HTTP
    M586 P1 S0 ; disable FTP
    M586 P2 S0 ; disable Telnet

    ; Drives
    M569 P0.0 S1 ; physical drive 0.0 goes forwards
    M569 P0.1 S0 ; physical drive 0.1 goes backwards
    M569 P0.2 S1 ; physical drive 0.2 goes forwards
    M569 P0.3 S1 ; physical drive 0.3 goes forwards
    M569 P0.4 S0 ; physical drive 0.4 goes backwards
    M569 P0.5 S1 ; physical drive 0.5 goes forwards
    M569 P1.0 S0 ; physical drive 1.0 goes forwards
    M584 X0.0 Y0.1 Z0.2:0.3:0.4 E0.5:1.0 ; set drive mapping
    M350 X16 Y16 Z16 E16:16 I1 ; configure microstepping with interpolation
    M92 X100.00 Y100.00 Z400.00 E408:408 ; set steps per mm
    M566 X600.00 Y600.00 Z24.00 E300.00:300.00 ; set maximum instantaneous speed changes (mm/min)
    M203 X20000 Y20000 Z600 E2000.00:2000.00 ; set maximum speeds (mm/min)
    M201 X3000.00 Y3000.00 Z600.00 E5000.00:5000.00 ; set accelerations (mm/s^2)
    M906 X1300 Y1300 Z1300 E800:800 I30 ; set motor currents (mA) and motor idle factor in per cent
    M84 S30 ; Set idle timeout
    M671 X-55:460:460 Y150:315:40 S9 ; leadscrews at rear left, front middle and rear right

    ; Axis Limits
    M208 X Y0 Z0 S1 ; set axis minima
    M208 X410 Y410 Z465 S0 ; set axis maxima

    ; Endstops
    M574 X1 S1 P"!io0.in" ; configure active-high endstop for low end on X via pin !io0.in
    M574 Y1 S1 P"!io1.in" ; configure active-high endstop for low end on Y via pin !io1.in
    M574 Z1 S2 ; configure Z-probe endstop for low end on Z

    ; Z-Probe
    ;M950 S0 C"io7.out" ; create servo pin 0 for BLTouch
    ;M558 P9 C"^io7.in" H5 F120 T6000 ; set Z probe type to bltouch and the dive height + speeds height + speeds
    ;G31 P500 X-40 Y-10 Z6 ; set Z probe trigger value, offset and trigger height
    ;M557 X20:430 Y15:410 S20 ; define mesh grid
    Z-Probe
    M558 P8 C"^io7.out" H10 F120 T6000
    G31 P50 X-40 Y-10 Z15
    M557 X20:400 Y20:400 S50

    ; Heaters
    M308 S0 P"temp0" Y"thermistor" T100000 B4008 ; configure sensor 0 as thermistor on pin temp0
    M950 H0 C"out0" T0 ; create bed heater output on out0 and map it to sensor 0
    M307 H0 B0 S1.00 ; disable bang-bang mode for the bed heater and set PWM limit
    M140 H0 ; map heated bed to heater 0
    M143 H0 S120 ; set temperature limit for heater 0 to 120C
    M308 S1 P"temp1" Y"thermistor" T100000 B3950 ; configure sensor 1 as thermistor on pin temp1
    M950 H1 C"out1" T1 ; create nozzle heater output on out1 and map it to sensor 1
    M307 H1 B0 S1.00 ; disable bang-bang mode for heater and set PWM limit
    M143 H1 S300
    M307 H0 A188.5 C683.1 D0.2 S1.0 V24.1 B0
    M307 H1 A351.2 C120.5 D7.2 S1.0 V24.1 B0

    ; Fans
    M950 F0 C"out7" Q500 ; create fan 0 on pin out7 and set its frequency
    M106 P0 S1 H-1 ; set fan 0 value. Thermostatic control is turned off
    M950 F1 C"out8" Q500 ; create fan 1 on pin out8 and set its frequency
    M106 P1 S1 H-1 ; set fan 1 value. Thermostatic control is turned off
    M950 F2 C"out9" Q500 ; create fan 2 on pin out9 and set its frequency
    M106 P2 S1 H-1 ; set fan 2 value. Thermostatic control is turned off

    ; 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

    ; Tools
    M563 P1 D1 H1 F0
    G10 P1 X0 Y0 Z0
    G10 P1 R0 S0

    ; Custom settings are not defined

    ; Miscellaneous
    T0
    M575 P1 S1 B57600 ; enable support for PanelDue
    M911 S10 R11 P"M913 X0 Y0 G91 M83 G1 Z3 E-5 F1000" ; set voltage thresholds and actions to run on power loss
    M501


  • Moderator

    Do any of the bits and bobs on the IR board look like they've been moved out of place at all? 14mm trigger height seems odd.

    If you have a plane piece of paper on the bed does it behave differently?


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