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markusa380

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Posts posted by markusa380

  1. Recently, the readings of the thermistor on my UMO are limited.

    A completely cold printhead will show ~120°C, when heating up this value does not change until the printhead actually reaches ~120°C.

    Then the temperature readings seem to be accurate within a margin of error.

    This all wouldn't be a problem, if the printer wouldn't abort heating before the printhead reached said thereshold.

    Of course the first thought is about a defect component, so I replaced:

    • The thermistor
    • The thermocouple
    • The Ultiboard
    • The Arduino

    I also checked the cables, of course.

    On the new arduino I flashed a customized fork of the Marlin firmware available on GitHub, forked from the Marlin_UM_HeatedBedUpgrade branch.

    Here's the link to my repo: https://github.com/MarkusA380/Marlin

    What could be the problem?

  2. Hello guys out there!

    I am having a problem with my newly assembled Ultimaker Original:

    It just doesn't heat up.

    I am running it over USB and as I have read, the fan on the bottom should turn on then. It also doesn't, i can have the switch turned on or off or the power supply cable plugged in or not. Nothing seems to work. Did I make a mistake?

    Greetings,

    MarkusA380

     

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