I can't get the Bltouch working



  • Everything is homing but it says the bltouch is triggered and the blue led is not on.
    Here is my config file. Everything is working heated bed extruders x and y just the zprobe is a problem.

    Thank you for the help

    ; 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 May 04 2018 09:52:39 GMT-0400 (Eastern Daylight Time)

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

    ; Network
    M550 TEVO BLACK WIDOW ; Set machine name
    M552 S1 ; Enable network
    ;*** Access point is configured manually via M587
    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 S0 ; Drive 1 goes forwards
    M569 P2 S0 ; Drive 2 goes backwards
    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 E420:420 ; Set steps per mm
    M566 X900 Y900 Z12 E120:120 ; Set maximum instantaneous speed changes (mm/min)
    M203 X6000 Y6000 Z180 E1200:1200 ; Set maximum speeds (mm/min)
    M201 X500 Y20 Z250 E250:250 ; Set accelerations (mm/s^2)
    M906 X800 Y800 Z800 E800:800 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 X580 Y250 Z400 S0 ; Set axis maxima

    ; Endstops
    M574 X1 Y1 S1 ; Set active high endstops

    ; Z-Probe

    M307 H3 A-1 C-1 D-1 ; BLTouch
    M558 P9 X0 Y0 Z1 H5 F100 T2000 ; BLTouch used by Z axis, dive height 5mm, mode 9
    G31 X0 Y0 Z1.53 P50 ; Z probe trigger value, offset in relation to nozzle. And trigger height adjustment

    ; 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 X150 T"K" ; Set thermistor + ADC parameters for heater 0
    M143 H1 S370 ; Set temperature limit for heater 1 to 370C
    M305 P2 X151 T"K" ; Set thermistor + ADC parameters for heater 1
    M143 H2 S370 ; Set temperature limit for heater 2 to 370C

    ; 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 H1:2 T45 ; Set fan 1 value, PWM signal inversion and frequency. Thermostatic control is turned on
    M106 P2 S1 I0 F500 H1:2 T45 ; 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 P1 R0 S0 ; Set initial tool 0 active and standby temperatures to 0C
    M563 P1 D1 H2 ; Define tool 1
    G10 P2 X0 Y0 Z0 ; Set tool 1 axis offsets
    G10 P2 R0 S0 ; Set initial tool 1 active and standby temperatures to 0C

    ; Automatic saving after power loss is not enabled

    ; Custom settings are not configured



  • Does it respond at all if you send it servo commands?

    Double check your wiring.



  • I just check all the wires. I follow this diagram. When I turn on the printer the pin goes in and out. I am using the wifi board I hope this is the right diagram.
    Also here is my deployprobe.g file.
    alt text

    Thank you for the help

    ; deployprobe.g
    ; called to home all axes
    ;
    ; generated by RepRapFirmware Configuration Tool on Fri May 04 2018 09:52:39 GMT-0400 (Eastern Daylight Time)

    ;M564 S0 ; don't apply limits
    ;G1 X25 Y93 Z40 F10000 ; put probe arm next to belt
    ;G1 X-5 F500 ; move probe arm across belt
    ;G1 X12 F1000 ; move probe back
    ;G1 X0 Y0 F10000 ; move to somewhere sensible
    ;M564 S1 ; apply limits again

    M280 P8 S99 T1



  • I don't think that's the right servo command for deploy.

    see here: https://duet3d.dozuki.com/Wiki/Connecting_a_Z_probe#Section_BLTouch

    Here's what I use

    ; Probe deployment routine for BLTouch-Smart on DBot
    ;
    M280 P3 S10 I1		; Set servo position to deploy
    
    ; Probe retraction routine for BLTouch-Smart on DBot
    ;
    M280 P3 S90 I1
    


  • That worked now I have to change the z motor it going the wrong way.
    the blue led is on now.

    Thank you



  • Something is still not right the machine status Z-Probe is reading 1000



  • The probe status doesn't change visibly in the interface. It only flashes as it triggers and then goes back. You'll have to do a manual test to see if it stops the bed from moving during a G30. Raise the print head away from the bed and issue a G30 and the probe should deploy. Touch the pin with your hand to trigger it and the movement should stop. If it doesn't, turn the power off.



  • When I do the G30 I get this error. I am new to the Duet Wifi Board it is pretty hard to setup for the first time.

    Error: G30: Insufficient axes homed for bed probing

    Thank you for your help



  • You'll need to home x and y first.

    Then you can move the head into the position you want to probe.

    I recommend reading through these guides.

    https://duet3d.dozuki.com/c/Getting_Started

    The Duet is a bit different than other boards and firmware, but it's also a lot more powerful and flexible.



  • Done - Move the nozzle until it is at a good Z=0 height (for example a height that will touch but not pin a piece of paper against the bed).
    Done - Set this height as Z=0 with G92 Z0
    Done -Move the print head up perhaps a centimeter

    When I do this I get this error - Run a single probe without updating the printer's coordinates: G30 S-1

    G30 S-1

    Error: Z probe already triggered at start of probing move

    Thank you so much for the help you are great help.


  • administrators

    @saltypetz said in I can't get the Bltouch working:

    When I do this I get this error - Run a single probe without updating the printer's coordinates: G30 S-1

    G30 S-1

    Error: Z probe already triggered at start of probing move

    Does the probe deploy when you run that command?



  • No It does comes on. Now everything is good but the BLTouch
    But if I do this it come down and the blue light comes on.
    M280 P3 S10 I1
    If I lightly touch the BLTouch it goes up red led on and then comes down and the blue led comes on.

    When I put this in all the pin does is goes in and out without stopping and blue led is on.
    M280 P3 S120 I1

    G30 S-1

    Error: Z probe already triggered at start of probing move


  • administrators

    Which firmware version are you using? Have you set up your deployprobe.g and retractprobe.g files as described on the wiki page?



  • Here is the firmware I am running.

    Firmware Name: RepRapFirmware for Duet 2 WiFi/Ethernet
    Firmware Electronics: Duet WiFi 1.02 or later
    Firmware Version: 1.21RC3 (2018-02-28 build 4)
    WiFi Server Version: 1.21RC4(08b3)
    Web Interface Version: 1.21-RC4

    Editing 0:/sys/deployprobe.g
    ; Probe deployment routine for BLTouchon on Tevo Black Widow
    M280 P3 S10 I1

    Editing 0:/sys/retractprobe.g
    ; Probe retraction routine for BLTouchon on Tevo Black Widow
    M280 P3 S10 I1

    Also on duet Wifi Page where it say Z- Probe it says 1000. The BLTouch is wired with the Duet Wifi diagram.

    I know I am so close It is driving me crazy. I have been working on this for 2 weeks.

    Thank you,



  • @saltypetz your deploy and retract commands are the same.


  • administrators

    As @Phaedrux says, also please use the 1.21 release firmware not the release candidate.



  • I did everything you said rolled the firmware back to 1.20
    and then all this.
    Commissioning & Testing
    To test the setup with the nozzle maybe a 100mm up from the bed you can check if the trigger signal is reaching the Duet by attempting to extend the pin by using the following command:

    M280 P3 S10 I1

    Then put the Sensor in to test mode by inputting the following command:

    M280 P3 S120 I1

    If all is well the web interface should report a value of ” 0” in the Z probe column when the pin is extended. You can then lightly touch the extended probe pin to check that the pin retracts, the value in the Z probe Column should change to “1000”

    If all is good It is at this point that you can deploy the probe using the M280 P3 S10 I1 command and slowly lower the nozzle to the bed and find out your own Z trigger height, when the probe touches the bed and the pin retracts you can take a reading of the Z height and use that to input into the G31 command in the config.g file

    When the pin hit the bed it flashes red and the z says 3.60 but where is says Z-Probe is says 1000.
    is everything done know and ready to print.

    Thank you everyone for the help this board is real hard. Thank you



  • Now if i tell it all home it homes x and y and centers in bed then the BLTouch goes up and down continuously without stopping.blue and red led on.



  • It sounds like you have the servo command to do a self test in your deploy macro instead of the command to deploy.



  • I hate to sound really dumb but now you lost me. I did all home x and y homed no problem and the Z runs into the bed.
    Can you give me a little more information than that I am lost and I am only 2 weeks in trying to get it to work.
    I am a newbie with the Duet Wifi but I love it already. I cant wait to get it going.


 

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