Being new to the world of stepper motors, I have a Longs Stepper Motor 23HS9430 bought from eBay it's a 3.0 A 5 V motor.

Although I have been reading about the supply voltage for the motor, the controller I have, again from eBay, has a supply voltage of 9-42 V DC.

What would be the best controller and supply voltage to run the stepper? The application is a antenna controller with a worm drive gearbox connected to the hardware that moves the antennas.

  • $\begingroup$ 24 is optimal, 42 if you have problems holding position. $\endgroup$ – morbo Jan 9 '20 at 11:23
  • $\begingroup$ Assuming by controller, you mean a stepper driver....if you dont have one, gecko drivers are highly recommended...assuming budget isn’t a huge concern. How do you intend to send steps/dir signals to the controller/driver $\endgroup$ – morbo Jan 9 '20 at 11:25

I think there should be things clarified:

In short: there are 3 components needed for control. A motor, a driver, and a power supply.

When you want to use a stepper motor in a project, you need to use a stepper driver. A stepper driver takes in the STEP and DIR(ection) signals to modulate the pulses to the motor. When you are looking at the specifications of the stepper motor, what you need is a stepper driver that can power the current requirements (amperes) of the motor. Once you have a stepper driver that can supply the required current, you then need to find a power supply that can power the stepper driver.

My suspicion is that the power supply you have is okay, but you need to pick out a stepper driver still. This is where I cannot answer, but rather suggest companies that make these sort of things. Circuit Specialists has stepper drivers that would fit your needs as they have high current and high precision. I suggest you do more research as any further answering would be opinionated.


I would recommend adhering to the specs of the motor for power supply.

Please see the following for driver:

  1. AMIS-30543 Stepper Motor Driver Carrier
  • 1
    $\begingroup$ Thanks for your answer but we are looking for comprehensive answers that provide some explanation and context. Very short answers cannot do this, so please edit your answer to explain why it is right. Additionally, we prefer answers to be self contained where possible. link only answers are frowned upon (as links tend to rot) & will be rendered useless if the linked-to content disappears. If you add more context and detail from the link, it is more likely that people will find your answer useful. $\endgroup$ – Greenonline May 12 '19 at 12:13

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