Quality problems. Duet vs. Marlin



  • Hello to all. I ask for help from the community. last time I wrote messages about diagonal lines on my delta. Since then, rails were bought and the printer was reworked. Because I had a good experience with marlin, the was installed skr 1.3 with drivers lv8729. I tried to make a printout of the darth vader head with nozzle 0.3 and layer 0.1. Having received more or less decent results, I changed the fee to my duet wifi. I can not understand the result .. I tried everything. Both interpolation, and the same 128 steps as in lv, and 256 on the extruder and relative and absolute extrusion. Without changes. When printing, the same retract and speed settings were used. I changed the volcano to the usual e3d, in the thought that these were problems of the retract. With a duet, I am good at typing only cubes and tests in spiral mode. As soon as it comes to more complex printouts - fail. Any ideas are welcome!

    0_1560769405150_photo_2019-06-17_14-01-17.jpg
    right duet, left marlin

    Duet Config https://yadi.sk/d/Jhv4W-_w-o4JbA
    Firmware Version: 2.03 (2019-06-13b2)
    WiFi Server Version: 1.23
    Web Interface Version: 1.22.6

    Marlin Configuration.h https://yadi.sk/d/8-yD42OADD0psw
    Marlin Configuration_adv.h https://yadi.sk/d/fW-lX-rlTMm30g



  • did you calibrate the e steps?

    if your bed is a semitec thermistor see the configurator for b and c values for that thermistor.
    the marlin thermistor file says B4100 for thermistor 13.

    did you pid tune your bed and hotend?



  • @veti of course calibrated. The temperature varies within 0.1 degrees Celsius.



  • @veti I have a PT100, and another complete set of other parts for another printer) However, the result is so-so


  • administrators

    Send M307 H0 and check that the response says that the bed is running in PID mode.



  • @dc42 said in Quality problems. Duet vs. Marlin:

    M307 H0

    M307 H0
    Heater 0 model: gain 149.1, time constant 568.6, dead time 3.6, max PWM 1.00, calibration voltage 23.9, mode PID, inverted no, frequency default


  • administrators

    @denis, I suspect it is at least partly a temperature issue. From @Veti's post above:

    @veti said in Quality problems. Duet vs. Marlin:

    if your bed is a semitec thermistor see the configurator for b and c values for that thermistor.
    the marlin thermistor file says B4100 for thermistor 13.

    If your Marlin config assumes B4100, that will give you significantly different temperatures from RepRapFirmware which you have configured for B4267.


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