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    BL touch setup help

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    Tuning and tweaking
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    • Drakundefined
      Drak
      last edited by

      I'm having trouble setting up a BL touch on my Duet wifi 2 board and Duex Board expansion. It won't respond to homing in the z axis and crashes into the bed. It also doesn't respond to commands like "M280 P0 S10 and M280 P0 S90 ". When i turn on the printer the BL touch deploys and retracts its trigger and then turns red. Here is the config file. I just want to make sure I set up the probes config portion correctly.

      ; Configuration file for Duet WiFi (firmware version 3)
      ; executed by the firmware on start-up
      ;
      ; generated by RepRapFirmware Configuration Tool v3.1.10 on Sat Dec 12 2020 18:09:32 GMT-0500 (Eastern Standard Time)
      
      ; General preferences
      G90                                                ; send absolute coordinates...
      M83                                                ; ...but relative extruder moves
      M550 P"Jumbo"                                      ; set printer name
      
      ; Network
      
      M587 S"Drexel''s_Nest" P"drakasfam95" I10.0.0.36  
      M552 S1                                        ; enable network
      M586 P0 S1                                         ; enable HTTP
      M586 P1 S0                                         ; disable FTP
      M586 P2 S0                                         ; disable Telnet
      
      ; Drives
      M584 X0 Y1:4 Z2:5:7:8 E3                                   ; set drive mapping
      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 S0                                         ; physical drive 3 goes forwards
      M569 P5 S0                                         ; physical drive 3 goes forwards
      M569 P7 S0                                         ; physical drive 3 goes forwards
      M569 P8 S0                                         ; physical drive 3 goes forwards
      
      M350 X16 Y16 Z16 E16 I1                            ; configure microstepping with interpolation
      M92 X80.00 Y80.00 Z2000.00 E100.00                  ; set steps per mm
      M566 X900.00 Y900.00 Z60.00 E120.00                ; set maximum instantaneous speed changes (mm/min)
      M203 X6000.00 Y6000.00 Z180.00 E1200.00            ; set maximum speeds (mm/min)
      M201 X500.00 Y500.00 Z20.00 E250.00                ; set accelerations (mm/s^2)
      M906 X800 Y800 Z800 E800 I30                       ; 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 X900 Y900 Z900 S0                             ; set axis maxima
      
      ; Endstops
      M574 X1 S1 P"xstop"                                ; configure active-high endstop for low end on X via pin xstop
      M574 Y1 S1 P"ystop"                                ; configure active-high endstop for low end on Y via pin ystop
      M574 Z1 S2                                         ; configure Z-probe endstop for low end on Z
      
      ; Z-Probe
      
      ; new probe bl touch
      
      
      M558 P9 C"^zprobe.in" H5 F100 T2000
      
      M950 S0 C"duex.pwm1"
      
      G31 X20 Y0 Z3.3 P25
      
      
      M557 X15:215 Y15:195 S20                           ; define mesh grid
      
      ; Heaters
      M140 H-1                                           ; disable heated bed (overrides default heater mapping)
      M308 S0 P"e0temp" Y"thermistor" T100000 B4138      ; configure sensor 0 as thermistor on pin e0temp
      M950 H0 C"e0heat" T0                               ; create nozzle heater output on e0heat and map it to sensor 0
      M307 H0 B0 S1.00                                   ; disable bang-bang mode for heater  and set PWM limit
      M143 H0 S260                                       ; set temperature limit for heater 0 to 260C
      
      ; Fans
      
      ; Tools
      M563 P0 D0 H0 S"Main"                                      ; define tool 1
      G10 P0 X0 Y0 Z0                                    ; set tool 1 axis offsets
      G10 P0 R0 S0                                       ; set initial tool 1 active and standby temperatures to 0C
      
      ; Custom settings are not defined
      
      ; Miscellaneous
      M501                                               ; load saved parameters from non-volatile memory
      M911 S10 R11 P"M913 X0 Y0 G91 M83 G1 Z3 E-5 F1000" ; set voltage thresholds and actions to run on power loss
      
      
      
      peter247undefined 1 Reply Last reply Reply Quote 0
      • peter247undefined
        peter247 @Drak
        last edited by

        @drak
        I'm using heater7

        ; Z-Probe
        M558 P9 C"^zprobe.in" H2 F100 T8000 A5		; set Z probe type to bltouch and the dive height + speeds
        M950 S0 C"exp.heater7"							; create servo pin 0 for BLTouch
        G31 P500 X 57.5 Y-10.5 Z 1.6                   	; set Z probe trigger value, offset and trigger height 1.7
        M557 X65:275 Y50:290 S30                    	; define mesh grid .. 30 , 60 , 80
        

        Ender 5 plus linear rail and hemera powered by duet 2 wifi , CR10s pro v1 with bltouch mostly stock , BLV mgn Cube slowly being built powered by duet 3 mini 5+

        1 Reply Last reply Reply Quote 0
        • PaulHewundefined
          PaulHew
          last edited by

          Your BLT config looks fine.
          Please post the results of M115 and a picture of the wiring.

          If the probe is not extending and retracting when the commands are issued, I would suspect wiring.

          RailCore II - Duet Mini + 1LC, Voron V0.1 - Duet Mini
          Voron 2.4 disassembled..... Waiting for the RailCore Mini....

          Drakundefined 1 Reply Last reply Reply Quote 0
          • Drakundefined
            Drak @PaulHew
            last edited by

            @paulhew
            M115 results:
            06971adc-d834-4580-b305-bb75f789ba06-image.png

            I did solder wires to extend the BL Touch cables but i checked the continuity with a multimeter and everything seemed to be okay.

            Here is a picture of the wiring
            6a711597-9945-4f47-9d98-8b1c3856585e-image.png

            droftartsundefined 1 Reply Last reply Reply Quote 0
            • droftartsundefined
              droftarts administrators @Drak
              last edited by droftarts

              @drak you have it plugged into duex.pwm5, not duex.pwm1. See the wiring diagram here:
              https://duet3d.dozuki.com/Wiki/Duex_wiring_diagrams
              Either plug it in to duex.pwm1, or change config.g to

              M950 S0 C"duex.pwm5"
              

              Ian

              Bed-slinger - Mini5+ WiFi/1LC | RRP Fisher v1 - D2 WiFi | Polargraph - D2 WiFi | TronXY X5S - 6HC/Roto | CNC router - 6HC | Tractus3D T1250 - D2 Eth

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

                Looks like you're on 3.1.1, should probably update the firmware to 3.2.2

                https://github.com/Duet3D/RepRapFirmware/releases/tag/3.2.2

                Z-Bot CoreXY Build | Thingiverse Profile

                1 Reply Last reply Reply Quote 0
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