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    Bltouch Setup Issue

    Scheduled Pinned Locked Moved
    Duet Hardware and wiring
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    • Dataro81undefined
      Dataro81
      last edited by Dataro81

      Hi,
      Trying to get my bltouch setup on my duet 2 wifi (firmware 3.1.1) for my delta printer. I was able to get the probe to deploy and retract, but the hotend crashes into the bed when the probe is deployed. Probe value stays 0 no matter if retracted or deployed.

      Attaching wiring, config.g, and calibration and compensate gcode below.

      Calibrate and Compensate
      G28 ; home
      M104 S0 ; turn off hot end
      M140 S0 ; turn off bed
      M280 P0 S10 ; deploy BLTouch
      G32 ; auto calibrate
      G29 ; generate bed height map
      G28 ; home
      M280 P0 S90 ; retract BLTouch

      config.g
      ; Configuration file for Duet WiFi (firmware version 3)
      ; executed by the firmware on start-up
      ;
      ; generated by RepRapFirmware Configuration Tool v3.1.4 on Mon Aug 10 2020 22:27:49 GMT-0600 (Mountain Daylight Time)

      ; General preferences
      G90 ; send absolute coordinates...
      M83 ; ...but relative extruder moves
      M550 P"Sandoria Kossel" ; set printer name
      M665 R220 L385 B130 H140 ; 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 S1 ; enable network
      M586 P0 S1 ; enable HTTP
      M586 P1 S0 ; disable FTP
      M586 P2 S0 ; disable Telnet

      ; Drives
      M569 P0 S1 ; physical drive 0 goes forwards
      M569 P1 S1 ; physical drive 1 goes forwards
      M569 P2 S1 ; physical drive 2 goes forwards
      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 S1 P"xstop" ; configure active-high endstop for high end on X via pin xstop
      M574 Y2 S1 P"ystop" ; configure active-high endstop for high end on Y via pin ystop
      M574 Z2 S1 P"zstop" ; configure Z-probe endstop for low end on Z

      ; Z-Probe
      M950 S0 C"exp.heater3" ; 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 R85 S20 ; define mesh grid

      ; Heaters
      M308 S0 P"bedtemp" Y"thermistor" T100000 B4138 ; configure sensor 0 as thermistor on pin bedtemp
      M950 H0 C"bedheat" T0 ; create bed heater output on bedheat and map it to sensor 0
      M307 H0 B1 S1.00 ; enable 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"e0temp" Y"thermistor" T100000 B4138 ; configure sensor 1 as thermistor on pin e0temp
      M950 H1 C"e0heat" T1 ; create nozzle heater output on e0heat and map it to sensor 1
      M307 H1 B0 S1.00 ; disable bang-bang mode for heater and set PWM limit

      ; Fans
      M950 F0 C"fan0" Q500 ; create fan 0 on pin fan0 and set its frequency
      M106 P0 S0 H-1 ; set fan 0 value. Thermostatic control is turned off
      M950 F1 C"fan1" Q500 ; create fan 1 on pin fan1 and set its frequency
      M106 P1 S1 H1 T45 ; set fan 1 value. 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
      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

      ![1_1597253175153_IMG_3976.jpeg](Uploading 100%) ![0_1597253175152_IMG_3975.jpeg](Uploading 100%) IMG_3975.jpeg

      IMG_3976.jpeg

      Kolbiundefined 1 Reply Last reply Reply Quote 0
      • Kolbiundefined
        Kolbi @Dataro81
        last edited by

        @Dataro81 It's hard to see, but I think I only see one pin between the ground wire and the heater3 wire on your pic - should be 2 pins in-between.
        blt.jpg

        Dataro81undefined 1 Reply Last reply Reply Quote 0
        • Dataro81undefined
          Dataro81 @Kolbi
          last edited by

          @Kolbi Hi, I have two pins in between. Do my configs look correct?

          IMG_3983.jpeg

          1 Reply Last reply Reply Quote 0
          • Phaedruxundefined
            Phaedrux Moderator
            last edited by

            Config looks ok, except

            G31 P500 X0 Y0 Z2.5

            Change P500 to P25, and measure your X Y Z offset.

            https://duet3d.dozuki.com/Wiki/Test_and_calibrate_the_Z_probe

            For the failure to trigger problem that would indicate an issue with your white wire. Check continuity.

            Z-Bot CoreXY Build | Thingiverse Profile

            Dataro81undefined 2 Replies Last reply Reply Quote 0
            • Dataro81undefined
              Dataro81 @Phaedrux
              last edited by

              Thanks @Phaedrux . Will go through your suggestions later today. Back to back meetings all day...

              1 Reply Last reply Reply Quote 0
              • Dataro81undefined
                Dataro81 @Phaedrux
                last edited by

                @Phaedrux Woot! The code change fixed my issue! Had to lower my bltouch a little so the hotend didn't hit the bed first, but other than that it worked like a charm. Thanks for all the help today!!

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