stuttering stepper

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  • October 29, 2013 at 3:08 am #4884
    tomking505
    Member

    I just got some steppers from china. One has visible stuttering at the beginning and ending. Here is a quarter speed video:

    http://youtu.be/cds_M8wlvRc

    Any ideas? The movement is perfectly smooth once it gets up to speed.

    TinyG has no such problems with my other steppers.

    • This topic was modified 10 years, 10 months ago by tomking505.
    October 29, 2013 at 7:14 am #4888
    alden
    Member

    You might also say none of you other steppers have problems with TinyG 🙂 I can’t really comment on the motor. It might be sensitive to power levels and/or microsteps. Have you played with them? Also, is the step angle set up properly?

    October 29, 2013 at 11:37 pm #4892
    tomking505
    Member

    I tried setting microsteps to 1 ad 8. Step angle is correct at 1.8. I tried several power levels. I took off the planetary gear, and the problem is in the motor, not the gearbox. My other motors seem happy with TinyG.

    I am trying to remember how to drive a motor right from an arduino, to have better control of each step.

    October 30, 2013 at 7:41 am #4898
    alden
    Member

    Can you provide information about the motor and where you got it? Did you only get one?

    October 30, 2013 at 10:20 am #4899
    tomking505
    Member

    Sure. I bought it from StepperOnline.com. It has a 1:13 planetary gearbox. I bought only one. It is above average in quality compared to my other steppers.

    Here is another slowmo video: http://youtu.be/CVxtsTw1AF4

    Thanks,

    Tom

    October 30, 2013 at 10:26 am #4900
    alden
    Member

    Do you happen to have a part number? THey have a lot of steppers on that site! Good find.

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