Need Help Duet2 WIFI and BLTouch



  • Hey guys having an issue I cant seem to figure out. BLTouch on my CoreXY decided to do it own thing today and I cant seem to figure out why. I printed just yesterday and it was fine. The only thing that changed was that I swapped to a V6. My config, homeall and homez are attached.

    Notes :
    It deploys and retracts the pin on command.
    Alarm is not being triggered on the BLTouch.
    Home all homes X and Y but states Zprobe already triggered at start of homing move.
    Zprobe is staying at 1000 with probe deployed and retracted.

    Anyone got any suggestions?
    CONGFIG
    M586 P0 S1 ; Enable HTTP
    M586 P1 S0 ; Disable FTP
    M586 P2 S0 ; Disable Telnet

    ; Drives
    M569 P0 S0 ; Drive 0 goes forwards
    M569 P1 S0 ; Drive 1 goes forwards
    M569 P2 S0 ; Drive 2 goes forwards
    M569 P3 S1 ; Drive 3 goes backwards
    M350 X16 Y16 Z16 E16 I1 ; Configure microstepping with interpolation
    M92 X80.00 Y80.00 Z400.00 E442.00 ; Set steps per mm
    M566 X1000.00 Y1000.00 Z800.00 E120.00 ; Set maximum instantaneous speed changes (mm/min)
    M203 X18000.00 Y18000.00 Z900.00 E1200.00 ; Set maximum speeds (mm/min)
    M201 X3000.00 Y3000.00 Z1000.00 E250.00 ; Set accelerations (mm/s^2)
    M906 X1300.00 Y1300.00 Z1300.00 E1300.00 I35 ; Set motor currents (mA) and motor idle factor in per cent
    M84 S30 ; Set idle timeout

    ; Axis Limits
    M208 X0 Y0 Z0 S1 ; Set axis minima
    M208 X330 Y330 Z400 S0 ; Set axis maxima

    ; Endstops
    M574 X1 Y1 S0 ; Set active low and disabled endstops

    ; Z-Probe
    M574 Z1 S2 ; Set endstops controlled by probe
    M307 H3 A-1 C-1 D-1 ; Disable heater on PWM channel for BLTouch
    M558 P9 H5 F100 T2000 ; Set Z probe type to bltouch and the dive height + speeds
    G31 X-40.30 Y-15.77 Z1.28 P25 ; Set Z probe trigger value, offset and trigger height
    M557 X35:215 Y30:195 S20 ; 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 B4725 C7.060000e-8 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 H1 T45 ; Set fan 1 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 are not configured

    HOMEALL
    G91 ; relative positioning
    G1 Z5 F6000 S2 ; lift Z relative to current position
    M98 Pdeployprobe.g ; deploy mechanical Z probe
    G1 S1 X-335 Y-335 F1800 ; move quickly to X or Y endstop and stop there (first pass)
    G1 S1 X-335 ; home X axis
    G1 S1 Y-335 ; home Y axis
    G1 X5 Y5 F6000 ; go back a few mm
    G1 S1 X-335 F360 ; move slowly to X axis endstop once more (second pass)
    G1 S1 Y-335 ; then move slowly to Y axis endstop
    G90 ; absolute positioning
    G1 X180 Y180 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 Z5 F100 ; lift Z relative to current position
    ;G90 ; absolute positioning

    M98 Pretractprobe.g ; retract mechanical Z probe

    HOMEZ
    G91 ; relative positioning
    G1 Z5 F6000 S2 ; lift Z relative to current position
    G90 ; absolute positioning
    G1 X180 Y180 F6000 ; go to first probe point
    G30 ; home Z by probing the bed

    ; Uncomment the following lines to lift Z after probing
    ;G91 ; relative positioning
    ;G1 S2 Z5 F100 ; lift Z relative to current position
    ;G90 ; absolute positioning
    G1 Z10 F6000 ; rapidly move the Z axis to z=10



  • Which firmware version are you running?

    @smk2019 said in Need Help Duet2 WIFI and BLTouch:

    The only thing that changed was that I swapped to a V6.

    Did a wire get loosened?

    What happens when you go through the steps here: https://duet3d.dozuki.com/Wiki/Test_and_calibrate_the_Z_probe

    M98 Pdeployprobe.g ; deploy mechanical Z probe
    M98 Pretractprobe.g ; retract mechanical Z probe

    Those shouldn't be necessary anymore. The Duet will take care of deploying and retracting as needed.



  • 2.02 No wires are loose all of them are connected and BLTouch is responding correctly. Thats the reason it is throwing me through a loop. I cant Run a homeall sequence. it runs X and Y but not Z



  • Check the white wire. That's the signal wire for triggering. If it's saying already triggered at the start of probing move that's where I would check first.

    If the last thing you worked on was you changed to a V6 that seems like a likely time for something to have gotten bumped.



  • @phaedrux That got it. it was such a small bend that to the naked eye it was unnoticeable. I had to get the magnifying lamp out and clamp it to the table to really look at it and it had a small bend. I appreciate it and thank you for your help. I was getting ready to just turn off the z stop and print like that tonight.


 

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