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IndustryArena Forum > CNC Electronics > Stepper Motors / Drives > Noob needs help to find the problem

Thread: Noob needs help to find the problem

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  1. 01-06-2025, 06:46 PM #1
    Fredda
    Fredda is offline Member
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    Unhappy Noob needs help to find the problem

    Hi!

    I'm trying to make my stepper motor 17HE08-1004s from stepperonline rotate clockwise 360 degrees every second, but instead it twitches and rotates randomly in both directions. I use the A4988 driver from AZ-delivery and an Arduino Uno. Below I will list all the values I currently have:
    - Motor power supply: 20V
    - Logic power supply: 5V (from Arduino)
    - Vref: 1.17V (can't seem to increase it more than this on the driver)

    Which of these values do you think is the problem and why?

    //Noob
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  2. 01-07-2025, 12:55 AM #2
    Vlod
    Vlod is offline Member
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    Re: Noob needs help to find the problem

    Try arduino forum…
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  3. 01-12-2025, 12:01 AM #3
    hfjbuis
    hfjbuis is offline Member
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    Re: Noob needs help to find the problem

    Flash your Arduino Uno with grbl. In the grbl controller, set a startup command ($N0=xxxx) to:
    - rotate the stepper 360°
    - wait some time
    - reboot the grbl controller
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