Delta auto calibration without z probe



  • Ok, it seems like there's a manual way to perform auto calibration. I don't have a Z probe ony my delta printer

    But how do I save these settings? I click on Auto delta calibration, and make a manual calibration of 4 points. Then I use "Run mesh grid compensation" and after probing a lot of points manually, the height seems to be fine. But as soon as I turn the printer off and on again, all that information is lost and I have to do everything again 😞

    How can I save the results?



  • M500 to save.

    M501 in config.g to load. Put it near the end of config.g

    .

    As a side note, M500 creates or updates "config_override.g" and you can use the editor to look at this file to help understand what it really dose.



  • Thanks, that helped. But the weird thing is that my glass bed seems to be lower in the center and higher at the edges. I doubt that the glass bed is bend like this.

    Any ideas?



  • @adras said in Delta auto calibration without z probe:

    Thanks, that helped. But the weird thing is that my glass bed seems to be lower in the center and higher at the edges. I doubt that the glass bed is bend like this.

    Any ideas?

    An overall "Cup" or overall "Dome", very symmetric, generally indicates something is off in the diagonal rod length and/or radius.

    Double check your diagonal rod length (G665 L parameter, in config.g or config_override.g). G32 does NOT set the L. It should be as exact as possible, the length of the rods "joint center to joint center".

    Run G32 several times before you run mesh bed.



  • @danal said in Delta auto calibration without z probe:

    Thank you very much, turned out that I had the wrong delta radius. I thought it's the size of the print bed, so I set it to a safe smaller value. But of course that was completely wrong. I'm now using a proper calculated value.



  • Congratulations!!


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