Beginner Needs Help - Extruder Stepper Motor



  • Hello,

    i need some help to configure a Extruder Stepper Motor.
    I have a dual / mixing Extruder with these Stepper Motors:

    PG35S-D48-HHC2

    digi-key link

    my configuration is :

    ; Drives
    M569 P0 S1 ; Drive 0 goes forwards
    M569 P1 S1 ; Drive 1 goes forwards
    M569 P2 S1 ; Drive 2 goes forwards
    M569 P3 S1 ; Drive 3 goes forwards
    M569 P4 S0 ; Drive 4 goes backwards

    M350 X128 Y128 Z128 I0 ;E16:16 I0 ; Configure microstepping without interpolation
    M350 E16:16 I1
    M92 X800 Y800 Z12800 E1700:1700 ; Set steps per mm
    M566 X900 Y900 Z12 E300:300 ; Set maximum instantaneous speed changes (mm/min) / jerk
    M203 X12000 Y12000 Z500 E1500:1500 ; Set maximum speeds (mm/min) Feedrate
    M201 X1000 Y1000 Z100 E10000:10000 ; Set accelerations (mm/s^2)
    M906 X855 Y855 Z855 U855 E250:250 I30 ; Set motor currents (mA) and motor idle factor in per cent
    M84 S30 ; Set idle timeout

    But this is'nt working correctly..
    when i extrude some Millimeter the motor is rotating 1° or 2 °
    when i extrude to fast the motor is rotating in the false direction

    Can anyone help me ?
    Thanks and best regards.


  • administrators

    Your E acceleration in the M201 command is 10000 which is much too high. Try reducing it to 1000 or less.


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