Duet maestro supported microstepping for extruder?



  • Hey there. I finally got my maestro, after customs decided to take aaages to process it 😞

    Anyways I'm on

    Firmware Electronics:	Duet Maestro 1.0
    Firmware Version:	2.02RC2(RTOS) (2018-09-07b2)
    Web Interface Version:	1.20
    

    My extruder is a bit of an odd-ball, with 2600 steps/mm at 16th microstepping. This used to work fine on my smoothieboard with 0.45A, but on the duet I'm having a hard time getting it to reliably run on 0.5A

    To fix this, I'm trying to use 4th microstepping, wich logically should mean steps/mm would be 650, which is more reasonable, however M350 E4 has no effect on extruded length or speed.

    Is the microstepping support not per driver? If it is, what's supported?

    Thanks 🙂


  • administrators

    Microstepping is supported per driver. When the firmware executes M350 it automatically adjusts the steps/mm to account for the change in microstepping.

    What mode do you have the extruder driver running in? If it's in stealthChop mode, try spreadCycle. See https://duet3d.dozuki.com/Wiki/GCode#Section_M569_Set_motor_driver_direction_enable_polarity_and_step_pulse_timing.

    btw there is a more recent version of the web interfacer than the one you are using.


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