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  • #1152
    BrianV
    Keymaster

    The two most common issues with stepper motors are “One stepper motor is not working/behaving” and “No motor movement”. Both of these are addressed quite thoroughly in the FAQs (visible to HobbyCNC Customers only). Please check them first!
    FAQ: Missing steps – motor not behaving properly
    FAQ: No motor movement
    FAQ: Stepper motor wire colors and connections to HobbyCNC Boards

    #20731
    wayne adams
    Participant

    How do I hookup two opposing drive motors on the X axes

    #20733
    BrianV
    Keymaster

    The word “Opposing” has me confused.
    Do you mean one spinning CW and the other CCW, or (more commonly) do you want to “mirror” two steppers for a single axis (both spin the same direction and number of steps in sync).
    this is a great question that I do get asked from time-to-time, I’ll need to add it to the FAQs.
    Here’s the deal, you CAN NOT put two stepper motors onto one driver chip.
    Here’s how it’s done – for the sake of this discussion, let’s say you have two motors driving your Y-axis gantry:

    • Connect one stepper motor to the “Y” axis output
    • Connect the second motor to the “A” axis output (one motor, one driver chip)
    • Your CAM software should allow you to define what pins are the step-and-direction for each axis. Configure the Y axis step and direction to BOTH the Y and A inputs.
    • If you want that second motor to spin the opposite direction, then, in your CAM software where you just assigned the Y outputs to the Y and A axis, select the option to invert one of the direction signals.

    And that’s that!

    [Edit: change to “Y-axis ganty”]

    • This reply was modified 1 month, 2 weeks ago by BrianV.
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