Brobe sensor does not respond to touch if g29 a second time?



  • The Brobe sensor does not respond to touch if g29 is used a second time.

    My algorithm of actions.

    1. I press g28, the X and Y axes go to the min switch.
      Z axis goes to limit switch Max.

    2. I will press G29.
       The table starts to rise and at a distance of 100 mm from the sensor begins to act on the touch. At this distance of 100, I clicked on it. Make sure it works!

    I immediately wanted to repeat the experiment

    1. I pressed g28.
    2. I pressed g29, the table was raised, but did not react to the touches until it approached the sensor. When the gap was 1 mm from the sensor, I had to turn off the printer.
      To not break anything.

    After that, I repeated everything first.
    For the first time, the G29 all works.
    The second time, the G29 does not react to touch.

    My config.
    ; Axis limit
    M208 X0 Y0 Z0 S1; Set axis minima
    M208 X290 Y290 Z1025 S0; Set axis maxima

    ; Endtops
    M574 X1 Y1 Z2 S0; Set active low and disabled endstops

    ; Z-probe
    M558 P5 H100 F120 T6000 I1; Set the speed of the probe
    G31 P500 X0 Y0 Z0; Set Z probe
    M557 X15: 265 Y15: 265 S150; Define mesh grid

    Homeall.
    G91; relative positioning
    ; G1 Z5 F6000 S2; lift Z relative to current position
    G1 S1X-305 Y-305 F1800; move to the X and Y axis thereto and stop there (first pass)
    G1 X5 Y5 F6000; go back a few mm
    G1 S1 X-305 Y-305 F360; move ()
    G1 S1 Z1025 F1000; move up stopping at the endstop
    G1 Z-5;
    G1 S1 Z1025 F300
    G90; absolute positioning
    G92 Z1025; set Z to axis minimum (you may want to adjust this)

    print height is large.
    Autocalibration will be before each seal.
    I use a nozzle as a sensor, use a tenzo.
    It is necessary that g29 worked a lot on time.

    Briefly.

    1. g28

    2. g29
      Ok

    3. g28

    4. g29

    5. g28

    6. g29 does not respond!

    What are your thoughts on this? Where is my mistake?


  • administrators

    What type of sensor is it, and how have you connected it to the Duet?



  • @dc42 said in Brobe sensor does not respond to touch if g29 a second time?:

    What type of sensor is it, and how have you connected it to the Duet?
    I use a weight sensor. It is triggered by touching the nozzle.
    It works correctly. When you enter the m119 command, it responds.

    I successfully started printing after g29. If you do not turn off the printer, the second time g29 will not work. The printer does not respond to pressing.

    Maybe this is due to the fact that the grid is loaded? If the command is a grid I would try to use it.


  • administrators

    @vladimirrus007 said in Brobe sensor does not respond to touch if g29 a second time?:

    I successfully started printing after g29. If you do not turn off the printer, the second time g29 will not work. The printer does not respond to pressing.

    Do you mean the sensor no longer responds to being pressed, even when you use M119 to test it? If so, that sounds like a problem with the sensor. But if it does respond correctly, then you should be able to run G29 again.


 

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