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    Mesh bed Leveling with differention IR-Probe Problems

    Scheduled Pinned Locked Moved
    IR Height Sensor
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    • S1lencerundefined
      S1lencer
      last edited by

      Hi,
      i have been dealing with this problem quite a while now and at this stage i am not willing to deal with my problem alone anymore.

      I will describe my problem below:

      Probe is set correctly.
      Normal Z-Homing is performing nicely.
      Starting to get to Mesh bed leveling G29 S0, the printer performs a axis homing correctly, then performs 2 or 3 mesh probings correctly and then it will push the nozzle in the bed and comes with the error: "Error: Z probe was not triggered during probing move"

      I got the printer to complete the mesh bed leveling once. But since then i wans't been able to get it to work again.

      The IR-Probe is connected correct and flashes 4 times during startup.

      Here is my Config.g:

      ; Configuration file for Duet WiFi (firmware version 1.20 or newer)
      ; executed by the firmware on start-up
      ;
      ; generated by RepRapFirmware Configuration Tool on Sat Nov 25 2017 11:49:47 GMT+0100 (Mitteleuropäische Zeit)

      ; General preferences
      M111 S0 ; Debugging off
      G21 ; Work in millimetres
      G90 ; Send absolute coordinates…
      M83 ; ...but relative extruder moves
      M555 P2 ; Set firmware compatibility to look like Marlin
      M911 S12 R21 P"M913 X0 Y0 G91 M83 G1 Z3 E-5 F1000"
      M208 X0 Y0 Z0 S1 ; Set axis minima
      M208 X210 Y297 Z220 S0 ; Set axis maxima
      M915 X Y S10 F0 H300 R3 ; Cofigure Stallguard
      M376 H10 ; Set bed compensation Taper

      ; Endstops
      M574 X1 Y1 S0 ; Set active low endstops
      M574 Z1 S2 ; Set endstops controlled by probe
      M558 P1 H5 F600 T6000 ; Set Z probe type to unmodulated and the dive height + speeds
      G31 P500 X-14.5 Y0 Z0.8 ; Set Z probe trigger value, offset and trigger height
      M557 X15:195 Y10:285 S20 ; Define mesh grid

      ; Drives
      M569 P0 S1 ; Drive 0 goes forwards
      M569 P1 S0 ; Drive 1 goes backwards
      M569 P2 S1 ; Drive 2 goes forwards
      M569 P3 S1 ; Drive 3 goes forwards
      M569 P4 S1 ; Drive 4 goes forwards
      M350 X16 Y16 Z16 E16:16 I1 ; Configure microstepping with interpolation
      M92 X80 Y80 Z4000 E476.5:500 ; Set steps per mm
      M566 X2000 Y2000 Z2000 E120:120 ; Set maximum instantaneous speed changes (mm/min)
      M203 X15000 Y15000 Z100 E6000:6000 ; Set maximum speeds (mm/min)
      M201 X1000 Y1000 Z1000 E6500:6500 ; Set accelerations (mm/s^2)
      M906 X1700 Y1700 Z1700 E1200:1200 I30 ; Set motor currents (mA) and motor idle factor in per cent
      M84 S30 ; Set idle timeout

      ; Heaters
      M301 H0 S1.00 P10 I0.1 D200 T0.4 W180 B30 ; Use PID on bed heater (may require further tuning)
      M305 P0 T100000 B4725 C7.060000e-8 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
      M307 H1 A282.9 C101.7 D4.0 B0 ; PWM for bed
      M307 H0 A131.7 C221.6 D2.4 B0 ; PWM for Hotend

      ; 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
      M563 P1 D1 H1 ; Define tool 1
      G10 P1 X0 Y0 Z0 ; Set tool 1 axis offsets
      G10 P1 R0 S0 ; Set initial tool 1 active and standby temperatures to 0C
      M572 D0 S0.2 ; Pressure Advance Drive 0
      M572 D1 S0.2 ; Pressure Advance Drive 1

      ; Network
      M550 PHephestos 2 Enhanced ; Set machine name
      M552 S1 ; Enable network
      M587 S"XXXXXXXXXXXXX" P"XXXXXXXXXXXXXX" ; Configure access point. You can delete this line once connected
      M586 P0 S1 ; Enable HTTP
      M586 P1 S1 ; Enable FTP
      M586 P2 S1 ; Enable Telnet

      ; 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
      M106 P2 S1 I0 F500 H1 T45 ; Set fan 2 value, PWM signal inversion and frequency. Thermostatic control is turned on

      ; Custom settings are not configured

      ; Miscellaneous
      T0 ; Select first tool

      Oh and my Hardware is an BQ Hephestos 2 with an Prometheus system.
      And Firmware settings are:

      Firmwarename: RepRapFirmware for Duet WiFi
      Firmware Elektronik: Duet WiFi 1.0
      Firmware Version: 1.20 (2017-12-23)
      WiFi Server Version: 1.20
      Web Interface Version: 1.2

      0

      If anything else is needed please let me know.

      Would be pleased if anyone could help me.

      mfg
      Kai

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      • S1lencerundefined
        S1lencer
        last edited by

        By the way, forget to mention that the bed isn't the glas one anymore. I installed a Filabase with a filaprint surface.
        but i can't get the mesh bet leveling (G29) to work anymore.
        As described the first till fith or so probes are fine but then the probe triggers but the axis keeps on driving the nozzel to the bed.

        Nobody a clue?

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        • dc42undefined
          dc42 administrators
          last edited by

          When the motor drives the nozzle into the bed, are you certain that the IR probe has triggered? What Z probe reading do you get at that point? You can temporarily reduce the Z moor current to avoid damage.

          Duet WiFi hardware designer and firmware engineer
          Please do not ask me for Duet support via PM or email, use the forum
          http://www.escher3d.com, https://miscsolutions.wordpress.com

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          • S1lencerundefined
            S1lencer
            last edited by

            Hi, the LED on the Probe definetly lights up so i assume the probe itself is fine.
            Cant tell exactly what the reading is at the point of impact, because the web interface is nat that fast with the updates.
            But i will look into it today.

            greetings Kai

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            • dc42undefined
              dc42 administrators
              last edited by

              Jog the nozzle slowly down over the point where probing fails, check that the LED lights up before the nozzle touches the bed, check that the web interface shows a Z probe reading in DWC is around 535, and measure the trigger height at that point to check that is isn't too different from the 0.8mm that you have configured in the G31 command

              Duet WiFi hardware designer and firmware engineer
              Please do not ask me for Duet support via PM or email, use the forum
              http://www.escher3d.com, https://miscsolutions.wordpress.com

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              • S1lencerundefined
                S1lencer
                last edited by

                Hi testet it now, the reading when it fails lies beneath 500, ist around 470.
                But when i jog the printer manually down on that position the probe reads 535 just fine.
                I don't know what the problem is. There are no loose wires or cold solderspots.
                Its confusing that somtimes the probe doesn't get over 480 and when i do the same spot manually it works perfecly fine and reads 535 repeatingly.

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                • S1lencerundefined
                  S1lencer
                  last edited by

                  Solved the problem.
                  Did a hole new wirering of the printer with shielded network cable.
                  Now the sensor behaves repeatingly trustfull.
                  Thanks for the Help so far.

                  greetings
                  Kai

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