Configurator BLTouch bug



  • I was just going through the configurator to see how it's holding up with firmware changes and noticed that when selecting BLTouch as the probe type and firmware 1.20 and up it uses probe type P5 in the M558 command instead of P9.

    ; 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 P5 H5 F120 T6000                              ; Set Z probe type to bltouch and the dive height + speeds
    G31 P25 X-30 Y30 Z2                                ; Set Z probe trigger value, offset and trigger height
    


  • Scratch that, I see now that the P9 type only became available in RepRapFirmware 1.21RC2 and onward.

    So perhaps configurator should be updated for 1.21 and 2.0?


  • administrators

    Yes it needs to be updated.



  • Hello,

    I do not understand what I need to set as gcode version 1.21 RC3? I followed this tutorial, but his M558 is in P5 because he did the tutorial in 1.20.

    I mix the brushes on config.g, Bed.g and the boot scritp.
    When I apply his tutorial perfectly, I have my bltouch who has strange reactions.

    1 / The BLtouch does not deploy when the machine is turned on, not all the time. I solved part of the problem by following this tutorial but from time to time the bltouch does not come out at startup. Just run the reset command and I can go on a self-calib.

    2 / The auto calib is perfect when we look at the visual grid at the end of the auto calib (![see photo](0_1533224457080_Capture d’écran 2018-08-01 à 19.04.58.png image url))

    3 / When I start my impression, the head remains about 1mm above the bed, although G31 P25 X0 Y20 Z0.627 corresponds to the value found by the command G30 S-1.

    4 / My startup script may not be correct, but at each print launch, a self calibration is started. I would like not to have the self-calibrated with each impression but rather when the temperatures of the room changes or at the change of type of filament.
    0_1533224533948_Capture d’écran 2018-08-02 à 17.34.03.png

    So I am blocked (so not far from printing!) And I can not find the info that will make me advance because my English is very bad to my great despair!

    If anyone has a little time to steer me and or solved my BLtouch problem ...

    thank you in advance

    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 Fri Jul 20 2018 10:07:42 GMT+0200 (CEST)

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

    ;*** The homed height is deliberately set too high in the following - you will adjust it during calibration.
    M665 R155 L397.19 B155 H520 ; 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

    ; Drives
    M569 P0 S1 ; Drive 0 goes forwards
    M569 P1 S1 ; Drive 1 goes forwards
    M569 P2 S1 ; Drive 2 goes forwards
    M569 P3 S0 ; Drive 3 goes forwards
    M350 X16 Y16 Z16 E16 I1 ; Configure microstepping with interpolation
    M92 X80 Y80 Z80 E417.22 ; Set steps per mm
    M566 X1200 Y1200 Z1200 E1200 ; Set maximum instantaneous speed changes (mm/min)
    M203 X18000 Y18000 Z18000 E1200 ; Set maximum speeds (mm/min)
    M201 X1000 Y1000 Z1000 E1000 ; Set accelerations (mm/s^2)
    M906 X1200 Y1200 Z1200 E1200 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 Y2 Z2 S1 ; Set active high endstops

    ; Z-Probe
    M307 H3 A-1 C-1 D-1 ; Disable heater on PWM channel for BLTouch
    M558 P9 H5 F120 T6000 ; F120 T6000 Set Z probe type to bltouch and the dive height + speeds
    G31 P25 X0 Y20 Z0.627 ; Set Z probe trigger value, offset and trigger height
    M557 R155 S45 ; Define mesh grid

    ; 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 B4138 C0 R4700 ; Set thermistor + ADC parameters for heater 0
    M143 H0 S120 ; Set temperature limit for heater 0 to 120C
    M305 P1 T100000 B4138 C0 R4700 ; Set thermistor + ADC parameters for heater 1
    M143 H1 S300 ; Set thermistor + ADC parameters for heater 0

    ; 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 H-1 ; Set fan 1 value, PWM signal inversion and frequency. Thermostatic control is turned off
    M106 P2 S1 I0 F500 H0 T50 ; Set fan 2 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 power saving
    M911 S10 R11 P"M913 X0 Y0 G91 M83 G1 Z3 E-5 F1000" ; Set voltage thresholds and actions to run on power loss

    ; Custom settings
    ;M591 D0 C3 P2 E6.0

    ; Miscellaneous
    M501 ;Load save parameters from non-volatile memory

    Bed.g
    ; bed.g
    ; called to perform automatic delta calibration via G32
    ;
    ; generated by RepRapFirmware Configuration Tool on Fri Jul 20 2018 10:07:42 GMT+0200 (CEST)
    M561 ; clear any bed transform
    G28 ; home all towers
    M190 S60
    M98 Pdeployprobe.g ; deploy mechanical Z probe
    ; Probe the bed at 6 peripheral and 6 halfway points, and perform 6-factor auto compensation
    ; Before running this, you should have set up your Z-probe trigger height to suit your build, in the G31 command in config.g.
    G30 P0 X0 Y132.28 H0 Z-99999
    G30 P1 X121 Y69.86 H0 Z-99999
    G30 P2 X129.9 Y-75 H0 Z-99999
    G30 P3 X0 Y-150 H0 Z-99999
    G30 P4 X-129.9 Y-75 H0 Z-99999
    G30 P5 X-121 Y69.86 H0 Z-99999
    G30 P6 X0 Y59.15 H0 Z-99999
    G30 P7 X56.09 Y32.38 H0 Z-99999
    G30 P8 X64.95 Y-37.5 H0 Z-99999
    G30 P9 X0 Y-75 H0 Z-99999
    G30 P10 X-64.95 Y-37.5 H0 Z-99999
    G30 P11 X-56.09 Y32.38 H0 Z-99999
    G30 P12 X0 Y0 H0 Z-99999 S6
    ; Use S-1 for measurements only, without calculations. Use S4 for endstop heights and Z-height only. Use S6 for full 6 factors
    ; If your Z probe has significantly different trigger heights depending on XY position, adjust the H parameters in the G30 commands accordingly. The value of each H parameter should be (trigger height at that XY position) - (trigger height at centre of bed)
    M98 Pretractprobe.g ; retract mechanical Z probe
    G29

    Homedelta.g
    ; homedelta.g
    ; called to home all towers on a delta printer
    ;
    ; generated by RepRapFirmware Configuration Tool on Fri Jul 20 2018 10:07:42 GMT+0200 (CEST)
    G91 ; relative positioning
    G1 S1 X705 Y705 Z705 F3600 S1 ; move all towers to the high end stopping at the endstops (first pass)
    G1 X-5 Y-5 Z-5 F3600 S2 ; go down a few mm
    G1 S1 X10 Y10 Z10 F360 S1 ; move all towers up once more (second pass)
    G1 Z-5 F6000 ; move down a few mm so that the nozzle can be centred
    G90 ; absolute positioning
    G1 X0 Y0 F6000 ; move X+Y to the centre

    Start script
    startingGcode,G28 ; home all axes,M98 Pbed.g,G92 E0 ; zero extruder,M98 PpurgeBeforePrint.g ; Purge the extruder along the front of the printer


  • administrators

    @rafb, release candidate versions of firmware should not be used once the corresponding release is out. So please upgrade your firmware, preferably to the latest release (2.01). Get it from https://github.com/dc42/RepRapFirmware/releases.



  • Hello and thank you for helping me.

    I updated the firmware. But now during an automatic calibration the bltouch flashes after some probing.
    Self test bltouch works well.

    These are the error messages that I hope you will continue to help me. Thanks

    Movie : https://www.icloud.com/iclouddrive/0SnWTptDUcH-U30REbemPmIzg#IMG_3246

    Here are the error messages
    14:33:21G28
    14:33:05M98 P"0:/macros/BLtouch/Alarm Release and Push-Pin UP"
    14:32:40Error: Z probe already triggered before probing move started
    14:32:39Error: Z probe already triggered at start of probing move
    Warning: Skipping grid point (-45.0, -135.0) because Z probe cannot reach it
    Warning: Skipping grid point (0.0, -135.0) because Z probe cannot reach it
    Warning: Skipping grid point (45.0, -135.0) because Z probe cannot reach it
    14:32:38Error: Z probe already triggered at start of probing move
    14:32:37Error: Z probe already triggered at start of probing move
    14:32:36Error: Z probe already triggered at start of probing move
    14:32:36Error: Z probe already triggered at start of probing move
    14:32:35Error: Z probe already triggered at start of probing move
    14:32:34Error: Z probe already triggered at start of probing move
    14:32:33Error: Z probe already triggered at start of probing move
    14:32:31Error: Z probe already triggered at start of probing move
    14:32:29Error: Z probe already triggered at start of probing move
    14:32:28G32
    Error: Z probe already triggered at start of probing move
    14:32:06M98 P"0:/macros/BLtouch/Pin Up"
    14:32:01M98 P"0:/macros/BLtouch/Selt-Test"
    14:31:56M98 P"0:/macros/BLtouch/Alarm Release and Push-Pin UP"
    14:31:43G28
    14:31:27Connection établie!
    14:31:26Déconnecté.
    14:29:20Connection établie!
    14:26:54Déconnecté.
    14:25:33G28
    14:24:30Error: Z probe already triggered before probing move started
    14:24:28Error: Z probe already triggered at start of probing move
    Warning: Skipping grid point (-45.0, -135.0) because Z probe cannot reach it
    Warning: Skipping grid point (0.0, -135.0) because Z probe cannot reach it
    Warning: Skipping grid point (45.0, -135.0) because Z probe cannot reach it
    14:24:28Error: Z probe already triggered at start of probing move
    14:24:27Error: Z probe already triggered at start of probing move
    14:24:26Error: Z probe already triggered at start of probing move
    14:24:25Error: Z probe already triggered at start of probing move
    14:24:24Error: Z probe already triggered at start of probing move
    14:24:23Error: Z probe already triggered at start of probing move
    14:24:22G32
    Error: Z probe already triggered at start of probing move
    14:23:52M561
    14:21:53M140 S60
    14:21:47G28
    14:21:41Connection établie!

    Config.g
    ; Configuration file for Duet WiFi (firmware version 1.21)
    ; executed by the firmware on start-up
    ;
    ; generated by RepRapFirmware Configuration Tool on Thu Aug 02 2018 09:35:23 GMT+0200 (CEST)

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

    ;*** The homed height is deliberately set too high in the following - you will adjust it during calibration.
    M665 R155 L397.19 B155 H525 ; 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

    ; Drives
    M569 P0 S1 ; Drive 0 goes forwards
    M569 P1 S1 ; Drive 1 goes forwards
    M569 P2 S1 ; Drive 2 goes forwards
    M569 P3 S1 ; Drive 3 goes forwards
    M350 X16 Y16 Z16 E16 I1 ; Configure microstepping with interpolation
    M92 X80 Y80 Z80 E417.22 ; Set steps per mm
    M566 X1200 Y1200 Z1200 E1200 ; Set maximum instantaneous speed changes (mm/min)
    M203 X18000 Y18000 Z18000 E1200 ; Set maximum speeds (mm/min)
    M201 X1000 Y1000 Z1000 E1000 ; Set accelerations (mm/s^2)
    M906 X1000 Y1000 Z1000 E1200 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 Y2 Z2 S1 ; Set active high endstops

    ; Z-Probe
    M307 H3 A-1 C-1 D-1 ; Disable heater on PWM channel for BLTouch
    M558 P9 H5 F120 T6000 ; Set Z probe type to bltouch and the dive height + speeds
    G31 P25 X0 Y20 Z1.015 ; Set Z probe trigger value, offset and trigger height
    M557 R150 S45 ; Define mesh grid

    ; Heaters
    M305 P0 T100000 B4138 C0 R4700 ; Set thermistor + ADC parameters for heater 0
    M143 H0 S120 ; Set temperature limit for heater 0 to 120C
    M305 P1 T100000 B4138 C0 R4700 ; Set thermistor + ADC parameters for heater 1
    M143 H1 S280 ; Set temperature limit for heater 1 to 280C

    ; 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 H-1 ; Set fan 1 value, PWM signal inversion and frequency. Thermostatic control is turned off
    M106 P2 S1 I0 F500 H0 T50 ; Set fan 2 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 power saving
    M911 S10 R11 P"M913 X0 Y0 G91 M83 G1 Z3 E-5 F1000" ; Set voltage thresholds and actions to run on power loss

    ; Custom settings
    ;M591 DO C3 P2 E6.0

    M501

    Bed.g
    ; bed.g
    ; called to perform automatic delta calibration via G32
    ;
    ; generated by RepRapFirmware Configuration Tool on Thu Aug 02 2018 09:35:23 GMT+0200 (CEST)
    M561 ; clear any bed transform
    G28 ; home all towers
    M190 S60
    M98 Pdeployprobe.g ; deploy mechanical Z probe
    ; Probe the bed at 6 peripheral and 6 halfway points, and perform 6-factor auto compensation
    ; Before running this, you should have set up your Z-probe trigger height to suit your build, in the G31 command in config.g.
    G30 P0 X0 Y132.28 H0 Z-99999
    G30 P1 X121 Y69.86 H0 Z-99999
    G30 P2 X129.9 Y-75 H0 Z-99999
    G30 P3 X0 Y-150 H0 Z-99999
    G30 P4 X-125.9 Y-75 H0 Z-99999
    G30 P5 X-121 Y69.86 H0 Z-99999
    G30 P6 X0 Y59.15 H0 Z-99999
    G30 P7 X56.09 Y32.38 H0 Z-99999
    G30 P8 X64.95 Y-37.5 H0 Z-99999
    G30 P9 X0 Y-75 H0 Z-99999
    G30 P10 X-64.95 Y-37.5 H0 Z-99999
    G30 P11 X-56.09 Y32.38 H0 Z-99999
    G30 P12 X0 Y0 H0 Z-99999 S6
    ; Use S-1 for measurements only, without calculations. Use S4 for endstop heights and Z-height only. Use S6 for full 6 factors
    ; If your Z probe has significantly different trigger heights depending on XY position, adjust the H parameters in the G30 commands accordingly. The value of each H parameter should be (trigger height at that XY position) - (trigger height at centre of bed)
    M98 Pretractprobe.g ; retract mechanical Z probe
    G29


  • administrators

    You should remove the two M98 commands from your bed.g file, because bltouch deployment is handled automatically if you have the correct deployprobe.g and retractprobe.g files.



  • Re,

    It still does not work. I followed your advice but nothing works. From the 1st probing, the bltouch flashes.

    Do you have another proposal to solve my problem?

    22:32:09Déconnecté.
    22:31:33Error: Z probe already triggered before probing move started
    22:31:32Warning: Skipping grid point (-45.0, -135.0) because Z probe cannot reach it
    Warning: Skipping grid point (0.0, -135.0) because Z probe cannot reach it
    Warning: Skipping grid point (45.0, -135.0) because Z probe cannot reach it
    22:31:32Error: Z probe already triggered at start of probing move
    22:31:31Error: Z probe already triggered at start of probing move
    22:31:30Error: Z probe already triggered at start of probing move
    22:31:30Error: Z probe already triggered at start of probing move
    22:31:28Error: Z probe already triggered at start of probing move
    22:31:28Error: Z probe already triggered at start of probing move
    22:31:27Error: Z probe already triggered at start of probing move
    22:31:26Error: Z probe already triggered at start of probing move
    22:31:24Error: Z probe already triggered at start of probing move
    22:31:23Error: Z probe already triggered at start of probing move
    22:31:21Error: Z probe already triggered at start of probing move
    22:31:19G32
    Error: Z probe already triggered at start of probing move
    22:31:05G28
    22:31:01Connection établie!



  • Have you verified that the trace has been cut to enable 3.3v logic?



  • I really understand nothing.

    Yes I think it's good to cut
    I have 2 bltouch, and it does not behave in the same way! see video
    https://www.icloud.com/iclouddrive/06gCZdGWIARZd1VsShhu1ZEaw#IMG_3247
    https://www.icloud.com/iclouddrive/0bQvdwlJunN4JS6AY0zxSuV4A#IMG_3248
    The, I despair, can I back down version (2.01 to 1.20) easily? That way I can apply the tutorial and especially print ...
    There is the option to change sensors but the IR does not seem to me well suited with a glass plate. I often use geckotek ...

    It remains the options I send videos (I am bad in English and google not always very good for the technique) and I await your analysis. I thank you for that again.

    A +



  • The tutorial should apply the same regardless of firmware version. But if you absolutely want to downgrade it should be as easy as uploading the older firmware. You may also need to upload the older wifi server and DWC files as well. But ideally I think you should try to get it working with 2.01 due to the other bug fixes and enhancements.

    I would suggest going over the wiring very carefully and checking for any loose crimps or broken wires. Check for continuity with a multimeter. Double check you are using the right pins. Recut the trace.



  • Hello,

    You were right one of the bltouch had bad contact. I solved this problem.
    But DC42's advice to remove M98 (deployprobe.g and retractprobe.g) does not solve the problem.
    I always have the Bltouch that starts the probing and after some probing (it's random, never the same point), it blinks.

    Movie
    https://www.icloud.com/iclouddrive/03A69h-sZ0sVq0HzIqz-bcx9Q#IMG_3251

    Console G-code
    09: 02: 51Error: Z probes already probed before probing move started
    09: 02: 50Error: Z probe already triggered at start of probing move
    Warning: Skipping grid point (-45.0, -135.0) because Z probe can not reach it
    Warning: Skipping grid point (0.0, -135.0) because Z probe can not reach it
    Warning: Skipping grid point (45.0, -135.0) because Z probe can not reach it
    09: 02: 49Error: Z probes already probed at start of probing move
    09: 02: 48Error: Z probe already triggered at start of probing move
    09: 02: 47Error: Z probe already triggered at start of probing move
    09: 02: 47Error: Z probe already triggered at start of probing move
    09: 02: 46Error: Z probes already probed at start of probing move
    09: 02: 45Error: Z probes already probed at start of probing move
    09: 02: 44Error: Z probe already triggered at start of probing move
    09: 02: 42G32
    Error: Z probe already triggered at start of probing move
    09: 02: 17M98 P "0: / macros / BLtouch / Alarm Release and Push-Pin UP"
    09: 01: 24Error: Z probes already probed before probing move started
    09: 01: 22Error: Z probe already triggered at start of probing move
    Warning: Skipping grid point (-45.0, -135.0) because Z probe can not reach it
    Warning: Skipping grid point (0.0, -135.0) because Z probe can not reach it
    Warning: Skipping grid point (45.0, -135.0) because Z probe can not reach it
    09: 01: 22Error: Z probe already triggered at start of probing move
    09: 01: 21Error: Z probe already triggered at start of probing move
    09: 01: 20Error: Z probe already triggered at start of probing move
    09: 01: 19Error: Z probe already triggered at start of probing move
    09: 01: 18Error: Z probe already triggered at start of probing move
    09: 01: 17Error: Z probe already triggered at start of probing move
    09: 01: 16Error: Z probe already triggered at start of probing move
    09: 01: 15Error: Z probe already triggered at start of probing move
    09: 01: 13Error: Z probe already triggered at start of probing move
    09: 01: 12Error: Z probe already triggered at start of probing move
    09: 01: 10Error: Z probes already probed at start of probing move
    09: 00: 58G32
    09: 00: 55Connection established!
    08: 56: 41Déconnecté.
    08: 55: 21M98 P "0: / macros / BLtouch / Alarm Release and Push-Pin UP"
    08: 55: 03G28
    08: 54: 33Error: Z probes already probed before probing move started
    08: 54: 32Error: Z probe already triggered at start of probing move
    Warning: Skipping grid point (-45.0, -135.0) because Z probe can not reach it
    Warning: Skipping grid point (0.0, -135.0) because Z probe can not reach it
    Warning: Skipping grid point (45.0, -135.0) because Z probe can not reach it
    08: 54: 31Error: Z probe already triggered at start of probing move
    08: 54: 30Error: Z probes already probed at start of probing move
    08: 54: 29Error: Z probes already probed at start of probing move
    08: 54: 28Error: Z probe already triggered at start of probing move
    08: 54: 27Error: Z probe already triggered at start of probing move
    08: 54: 27Error: Z probe already triggered at start of probing move
    08: 54: 26Error: Z probe already triggered at start of probing move
    08: 54: 24Error: Z probe already triggered at start of probing move
    08: 54: 22G32
    Error: Z probe already triggered at start of probing move
    08: 53: 43G28
    08: 53: 39Connection established!
    08: 51: 14Déconnecté.
    08: 51: 05G28
    08: 50: 44Error: Z probes already triggered before probing
    08: 50: 43Error: Z probe already triggered at start of probing move
    Warning: Skipping grid point (-45.0, -135.0) because Z probe can not reach it
    Warning: Skipping grid point (0.0, -135.0) because Z probe can not reach it
    Warning: Skipping grid point (45.0, -135.0) because Z probe can not reach it
    08: 50: 42Error: Z probe already triggered at start of probing move
    08: 50: 41Error: Z probe already triggered at start of probing move
    08: 50: 40Error: Z probe already triggered at start of probing move
    08: 50: 39G32
    Error: Z probe already triggered at start of probing move
    08: 49: 38G28
    08: 49: 35Connection established!
    08: 49: 31Déconnecté.
    08: 48: 46G28
    08: 48: 40Connection established!
    08: 48: 33Loading full page!


  • administrators

    Check the Z probe reading in the web interface when the BLTouch is deployed but the pin has not been pushed up. It should be zero. If it is about 1000, then either you have not selected the correct mode in M558 (it should be P9, and you should not have the I1 parameter), or there is a bad connection between the Duet and the white wire of the BLTouch.



  • Everything works perfect for bltouch with up, down, reset and self test macros.
    But as soon as I go on an autocalibration the bltouch flashes on randomly on the 1st probing.

    Do not do M561 and or G32 S2 for "reset" what is already register?

    What information can I give you to simplify your expertise?

    https://www.icloud.com/iclouddrive/0C39MWPjsBWmhMMAeG79nucpQ#IMG_3252


  • administrators

    @rafb said in Configurator BLTouch bug:

    Everything works perfect for bltouch with up, down, reset and self test macros.

    Does that mean that you get the correct Z probe reading, or haven't you checked it?



  • Sorry, I'm French and I do not understand what you mean.

    It has been several times that I turn on my printer and that communication is impossible. the wifi light is lit. It is very hot in France (31 in my garage) but I have the original Tevo fan that works.

    I do not understand why the bltouch works perfectly by sending the up, down, reset and selftest commands individually but when I run the auto calibration, the bltouch does some probing and can not finish the autocalibration.

    I do not know what to do and I just have to hope that you will find what I did wrong or forgot to do.


  • administrators

    I mean this:

    @dc42 said in Configurator BLTouch bug:

    Check the Z probe reading in the web interface when the BLTouch is deployed but the pin has not been pushed up. It should be zero. If it is about 1000, then either you have not selected the correct mode in M558 (it should be P9, and you should not have the I1 parameter), or there is a bad connection between the Duet and the white wire of the BLTouch.



  • Ok I understand what you mean now but google must translate poorly what I tell you.

    When there is no i1 in deployprobe.g and retractprobe.g to do auto-calibration or macros, the bltouch commands do not work.

    I checked all my connector and crimp (welded) to the multimeter, no problem.

    After some probing, the bltouch goes up and down which makes it blink.

    //Console G-code after auto-calibration
    17:45:50Déconnecté.
    17:45:16Error: Z probe already triggered before probing move started
    17:45:15Error: Z probe already triggered at start of probing move
    Warning: Skipping grid point (-45.0, -135.0) because Z probe cannot reach it
    Warning: Skipping grid point (0.0, -135.0) because Z probe cannot reach it
    Warning: Skipping grid point (45.0, -135.0) because Z probe cannot reach it
    17:45:14Error: Z probe already triggered at start of probing move
    17:45:13Error: Z probe already triggered at start of probing move
    17:45:12G32
    Error: Z probe already triggered at start of probing move
    17:44:20G28
    17:44:08Connection établie!
    17:44:06Déconnecté.
    17:43:23M98 P"0:/macros/Calibration/2- Calcul Z"
    Stopped at height 1.927 mm
    17:42:52G30 S-1
    Stopped at height 1.927 mm

    0_1533397798352_Capture d’écran 2018-08-04 à 17.33.59.png
    0_1533397764099_Capture d’écran 2018-08-04 à 17.34.28.png

    //Config.g
    ; Configuration file for Duet WiFi (firmware version 1.21)
    ; executed by the firmware on start-up
    ;
    ; generated by RepRapFirmware Configuration Tool on Thu Aug 02 2018 09:35:23 GMT+0200 (CEST)

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

    ;*** The homed height is deliberately set too high in the following - you will adjust it during calibration.
    M665 R155 L397.19 B155 H520 ; 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

    ; Drives
    M569 P0 S1 ; Drive 0 goes forwards
    M569 P1 S1 ; Drive 1 goes forwards
    M569 P2 S1 ; Drive 2 goes forwards
    M569 P3 S1 ; Drive 3 goes forwards
    M350 X16 Y16 Z16 E16 I1 ; Configure microstepping with interpolation
    M92 X80 Y80 Z80 E417.22 ; Set steps per mm
    M566 X1200 Y1200 Z1200 E1200 ; Set maximum instantaneous speed changes (mm/min)
    M203 X18000 Y18000 Z18000 E1200 ; Set maximum speeds (mm/min)
    M201 X1000 Y1000 Z1000 E1000 ; Set accelerations (mm/s^2)
    M906 X1000 Y1000 Z1000 E1200 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 Y2 Z2 S1 ; Set active high endstops

    ; Z-Probe
    M307 H3 A-1 C-1 D-1 ; Disable heater on PWM channel for BLTouch
    M558 P9 H5 F120 T6000 ; Set Z probe type to bltouch and the dive height + speeds
    G31 P25 X0 Y20 Z1.927 ; Set Z probe trigger value, offset and trigger height
    M557 R150 S45 ; Define mesh grid

    ; Heaters
    M305 P0 T100000 B4138 C0 R4700 ; Set thermistor + ADC parameters for heater 0
    M143 H0 S120 ; Set temperature limit for heater 0 to 120C
    M305 P1 T100000 B4138 C0 R4700 ; Set thermistor + ADC parameters for heater 1
    M143 H1 S280 ; Set temperature limit for heater 1 to 280C

    ; 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 H-1 ; Set fan 1 value, PWM signal inversion and frequency. Thermostatic control is turned off
    M106 P2 S1 I0 F500 H0 T50 ; Set fan 2 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 power saving
    M911 S10 R11 P"M913 X0 Y0 G91 M83 G1 Z3 E-5 F1000" ; Set voltage thresholds and actions to run on power loss

    ; Custom settings
    ;M591 DO C3 P2 E6.0

    M501



  • From your videos it looks like the probe pin is sticking. Earlier you said you had tried to repair it by taking the pin out?

    Try this, put the probe into self test where it deploys and retracts the pin repeatedly and leave it running for a long while. The probe should continue indefinitely. If it gets stuck and goes into error that means that the pin is likely getting stuck. If this is the case you may need to replace the probe. The newer versions of the BLTouch are quite improved over the older style. The pins are now plastic for instance. Given the cost it may be worth just replacing it.


  • administrators

    You still haven't answered my original question: is the Z probe reading shown by DWC zero (or close to zero) when the probe is not triggered?


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