Duet Maestro 2 Wifi BLTouch Issue



  • I blue up my old Duet Maestro 2 Ethernet a few weeks ago by shorting out the mosfet for the heater. So I ordered a replacement and this time got the Duet Maestro 2 Wifi. I immediately upgraded the firmware to 3.1.1 since it was a new config build. The issue I am having is that the BLTouch is not responding at all. As soon as I turn on the printer the BLTouch is flashing red and the probe stays in whatever the last position it was in. The Z-Probe on the status screen always shows Z-Probe = 1000.

    I have the wiring for the BLTouch hooked up to the dedicated 4 pin connector on the board. From front to back of the board, the BLTouch is wired as such:

    1. White
    2. Black/Brown
    3. Orange
    4. Red

    In Config.g this is my Z-Probe settings:
    ; Z-Probe
    M950 S0 C"^zprobe.mod" ; create servo pin 0 for BLTouch
    M558 P9 C"^zprobe.in" H5 F120 T6000 ; set Z probe type to bltouch and the dive height + speeds
    G31 P500 X0 Y0 Z2.5 ; set Z probe trigger value, offset and trigger height
    M557 X15:215 Y15:195 S20 ; define mesh grid

    Here is my deployprobe.g:
    ; deployprobe.g
    ; called to deploy a physical Z probe
    ;
    ; generated by RepRapFirmware Configuration Tool v3.1.10 on Sat Dec 19 2020 20:28:49 GMT-0500 (Eastern Standard Time)
    M280 P0 S10 ; deploy BLTouch

    Here is my retractprobe.g:
    ; retractprobe.g
    ; called to retract a physical Z probe
    ;
    ; generated by RepRapFirmware Configuration Tool v3.1.10 on Sat Dec 19 2020 20:28:49 GMT-0500 (Eastern Standard Time)
    M280 P0 S90 ; retract BLTouch

    And finally, here is my homez.g:
    ; homez.g
    ; called to home the Z axis
    ;
    ; generated by RepRapFirmware Configuration Tool v3.1.10 on Sat Dec 19 2020 20:28:50 GMT-0500 (Eastern Standard Time)
    G91 ; relative positioning
    G1 H2 Z5 F6000 ; lift Z relative to current position
    G90 ; absolute positioning
    G1 X15 Y15 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 Z5 F100 ; lift Z relative to current position
    ;G90 ; absolute positioning

    The BLTouch worked perfectly when I was using it with my old Duet Maestro running old firmware but does not work with the new firmware. I have searched high and low to try and find out why it isn't working. 😞 Anyone able to help me out?



  • @PUGCanada said in Duet Maestro 2 Wifi BLTouch Issue:

    Duet Maestro 2 Wifi.

    there is no wifi version of the maestro.

    did you get the duet 2 wifi? the zprobe.mod on the 2 wifi is not pwm capable.

    see
    https://duet3d.dozuki.com/Wiki/Connecting_a_Z_probe#Section_Duet_2_WiFi_Ethernet_without_a_Duex_2_or_Duex_5_expansion_board



  • Exactly what I needed. Everything is working now. Thank you!


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