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UM3 - M303 PID autotune


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Posted · UM3 - M303 PID autotune

I have been trying for hours in vain to trigger a PID autotune with my Ultimaker 3 using M303. But I get no error and no values.
My procedure:

  • Enable Developer Mode
  • Establish a connection via terminal (ssh ultimaker@ip)
  • sendgcode M303 T0 S225 C5

Reading out the current values works:

  • Establish a connection via terminal (ssh ultimaker@ip)
  • select printer printer/head/0/slot/0
  • list

Anybody got a tip for me? Thank you!

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    Posted · UM3 - M303 PID autotune
    1 hour ago, kompetenz-pro said:

    I have been trying for hours in vain to trigger a PID autotune with my Ultimaker 3


    just out of curiosity.....  why?


    All printcores should come fully calibrated.

    I strongly doubt that recent Ultimaker models support gcode M303 at all.

    Have you found it somewhere (in the documentation)?


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    Posted (edited) · UM3 - M303 PID autotune

    Starting with Ultimaker 3 the code M303 is no longer supported. Ultimaker 2 and before should still support the code.

    I have a printing problem and can't get any further. As you can see in the picture, the paths always break at the same place. Top left - at the start of the layer. Regardless of where I place the object on the print bed.

    I checked temperature, printing speed, line width, filament diameter, ...




    Edited by kompetenz-pro
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    Posted · UM3 - M303 PID autotune

    Do you refer to tiny holes in the uppermost layer (that is what I might be able to see in that picture)? If yes, that can have many reasons from non-ideal temperature to part-blockades in printcore, Bowden tube or feeder.

    A good first check usually is to increase print temperature by 5-10deg and check if it is still there. If yes, then it's rather something mechanical. Still it could be a cooling effect if something is wrong with the fans. It's a very wide field.

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