Z probe with FSR



  • Hi!

    I'm trying to use my FSR as Z probe. But I can't have something working. I use M558 P1 F300 H2 to configure the probe, then I use G30 to probe. It should stay where it is, but in my case, it starts to move on X, sometimes on Y, then move down (but not where I want).

    What am I doing wrong?

    Second, I would like to use the probe input for the probe, and keep my Z endstop, tuned in the way so if the probe fails, the Z endstop will be triggered say 1mm further to stop the move. Does it work? Is Z endstop read during probing?

    Thanks.


  • administrators

    Have you deleted any default deployprobe.g and retract probe.g files since upgrading firmware to 1.19 or later?



  • No, I didn't. I'll try that tomorrow.

    Thanks!



  • Ok, it works fine.

    Now, I have another question: at first, I plan to make a manual trigger probe I will have to put on the bed, at the different triggered points (I think it is possible to pause the script, output a message and wait for key press between points). This will allow me to create the bed map.

    Once the map is done, I will use the manual probe to do the Z homing. How do I do that? What should I put in home_z.g file?

    I will also tune the Z endstop to be a little further, so if the Z probe fails, or if I don't put it under the nozzle when asked by the script, the head won't crash too much into the bed (there are springs). Is it possible?


  • administrators

    For the pause and ask for user input have a look at M291 - (I have not used it in this way but it should work)

    https://duet3d.dozuki.com/Wiki/Gcode#Section_M291_Display_message_and_optionally_wait_for_response



  • Ok, thanks!



  • @fma said in Z probe with FSR:

    Once the map is done, I will use the manual probe to do the Z homing. How do I do that? What should I put in home_z.g file?
    .
    I will also tune the Z endstop to be a little further, so if the Z probe fails, or if I don't put it under the nozzle when asked by the script, the head won't crash too much into the bed (there are springs). Is it possible?

    What about these points?


 

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