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    BLTouch not triggering

    Scheduled Pinned Locked Moved Solved
    Duet Hardware and wiring
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    • R3playundefined
      R3play
      last edited by

      Hi there.
      So I got my Duet3D Wifi boar today and installed/wired everything up.
      So far everything works.
      However, when I want to home the Z axis, the pin deploys, Z axis goes down but when the pin then retracts it just keeps going and it doesn't stop (only when I power the machine off).

      Fix?

      Config file:

      ; Configuration file for Duet WiFi (firmware version 1.21)
      ; executed by the firmware on start-up
      ;
      ; generated by RepRapFirmware Configuration Tool v2 on Fri Dec 28 2018 13:58:12 GMT+0100 (Midden-Europese standaardtijd)

      ; General preferences
      G90 ; Send absolute coordinates...
      M83 ; ...but relative extruder moves

      ; Network
      M550 P"AM8" ; Set machine name
      M551 P"itsasecret: ; Set password
      M552 S1 ; Enable network
      M586 P0 S1 ; Enable HTTP
      M586 P1 S0 ; Disable FTP
      M586 P2 S0 ; Disable Telnet

      ; Drives
      M569 P0 S1 ; Drive 0 goes forwards
      M569 P1 S1 ; Drive 1 goes forwards
      M569 P2 S0 ; Drive 2 goes forwards
      M569 P3 S1 ; Drive 3 goes forwards
      M350 X16 Y16 Z16 E16 I1 ; Configure microstepping with interpolation
      M92 X200.00 Y200.00 Z800.00 E420.00 ; Set steps per mm
      M566 X900.00 Y900.00 Z12.00 E120.00 ; Set maximum instantaneous speed changes (mm/min)
      M203 X6000.00 Y6000.00 Z180.00 E1200.00 ; Set maximum speeds (mm/min)
      M201 X1000.00 Y1000.00 Z20.00 E250.00 ; Set accelerations (mm/s^2)
      M906 X800.00 Y800.00 Z800.00 E800.00 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 X220 Y220 Z200 S0 ; Set axis maxima

      ; Endstops
      M574 X0 Y0 S0 ; Set active high 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 P500 X31 Y-8 Z2.5 ; Set Z probe trigger value, offset and trigger height
      M557 X15:0 Y15:195 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 B4138 R4700 ; Set thermistor + ADC parameters for heater 1
      M143 H1 S280 ; Set temperature limit for heater 1 to 280C
      M307 H1 A390.2 C216.6 D6.7 B0

      ; 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 saving after power loss is not enabled

      ; Custom settings are not configured

      deployprobe.g

      ; deployprobe.g
      ; called to deploy a physical Z probe
      ;
      ; generated by RepRapFirmware Configuration Tool v2 on Fri Dec 28 2018 13:58:13 GMT+0100 (Midden-Europese standaardtijd)
      M280 P3 S10 I1

      retractprobe.g

      ; retractprobe.g
      ; called to retract a physical Z probe
      ;
      ; generated by RepRapFirmware Configuration Tool v2 on Fri Dec 28 2018 13:58:13 GMT+0100 (Midden-Europese standaardtijd)
      M280 P3 S90 I1

      1 Reply Last reply Reply Quote 0
      • R3playundefined
        R3play
        last edited by

        After changing the following line:

        M558 P9 H5 F100 T2000 ; Set Z probe type to bltouch and the dive height + speeds

        To

        M558 P4 H5 F100 T2000 ; Set Z probe type to bltouch and the dive height + speeds

        And then try to home Z I'm getting the following error:
        G28 Z

        Error: Z probe already triggered at start of probing move
        Error: Homing failed

        However now that I changed the P value to 4 I'm getting a Z-Probe readout of 1000 when the pin is in and out on WBC wich I didn't have before (Reading of 1000)

        Stephen6309undefined 1 Reply Last reply Reply Quote 0
        • Stephen6309undefined
          Stephen6309 @R3play
          last edited by

          @r3play Have you tried inverting the probe reading. Add a I1 to the M558 line.

          R3playundefined 1 Reply Last reply Reply Quote 0
          • R3playundefined
            R3play @Stephen6309
            last edited by

            @stephen6309 said in BLTouch not triggering:

            @r3play Have you tried inverting the probe reading. Add a I1 to the M558 line.

            I've added a I1 to the M558 command line, but it stays the same.
            Pin goes out, lowers Z, but when I push the pin in (manually) it just deploys it back while Z keeps moving down.

            1 Reply Last reply Reply Quote 0
            • R3playundefined
              R3play
              last edited by R3play

              Update

              Current settings:

              Config file

              ; Configuration file for Duet WiFi (firmware version 1.21)
              ; executed by the firmware on start-up
              ;
              ; generated by RepRapFirmware Configuration Tool v2 on Fri Dec 28 2018 13:58:12 GMT+0100 (Midden-Europese standaardtijd)

              ; General preferences
              G90 ; Send absolute coordinates...
              M83 ; ...but relative extruder moves

              ; Network
              M550 P"AM8" ; Set machine name
              M551 P"itsasecret: ; Set password
              M552 S1 ; Enable network
              M586 P0 S1 ; Enable HTTP
              M586 P1 S0 ; Disable FTP
              M586 P2 S0 ; Disable Telnet

              ; Drives
              M569 P0 S1 ; Drive 0 goes forwards
              M569 P1 S1 ; Drive 1 goes forwards
              M569 P2 S0 ; Drive 2 goes forwards
              M569 P3 S1 ; Drive 3 goes forwards
              M350 X16 Y16 Z16 E16 I1 ; Configure microstepping with interpolation
              M92 X200.00 Y200.00 Z800.00 E420.00 ; Set steps per mm
              M566 X900.00 Y900.00 Z12.00 E120.00 ; Set maximum instantaneous speed changes (mm/min)
              M203 X6000.00 Y6000.00 Z180.00 E1200.00 ; Set maximum speeds (mm/min)
              M201 X1000.00 Y1000.00 Z20.00 E250.00 ; Set accelerations (mm/s^2)
              M906 X800.00 Y800.00 Z800.00 E800.00 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 X220 Y220 Z200 S0 ; Set axis maxima

              ; Endstops
              M574 X0 Y0 S0 ; Set active high 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 I1 ; Set Z probe type to bltouch and the dive height + speeds
              G31 P25 X31 Y-8 Z0 ; Set Z probe trigger value, offset and trigger height
              M557 X15:0 Y15:195 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 B4138 R4700 ; Set thermistor + ADC parameters for heater 1
              M143 H1 S280 ; Set temperature limit for heater 1 to 280C
              M307 H1 A390.2 C216.6 D6.7 B0

              ; Fans
              M106 P0 S0 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 saving after power loss is not enabled

              ; Custom settings are not configured

              Probe is ALWAYS reading 1000.
              So it's always assuming that the "endstop" is hit, wether the pin is deployed or retracted.
              When I remove the I1 from the M558 command it just shows 0 deployed or retracted.

              Wiring:
              0_1546019308140_20181228_184657.jpg

              Basically using this wiring:
              alt text

              I also have checked the white wire and it makes a connection.

              When sending M401 manually the pin deploys
              When sending M402 manually the pin retracts

              0_1546020439654_Screenshot_50.jpg

              1 Reply Last reply Reply Quote 0
              • R3playundefined
                R3play
                last edited by

                TOPIC CAN BE CLOSED.

                After 6 hours of struggling and trying I eventually found out I switched the black and white wires... facepalm

                Glad I found the problem!
                BLTouch works perfectly now.

                1 Reply Last reply Reply Quote 0
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