Go Down

Topic: Accidently bought stepper motor. Can I use? I have a driver shield (Read 804 times) previous topic - next topic


I accidentally bought a stepper motor from http://www.sparkfun.com/products/9238 I really just needed a normal motor, I hardly know what a stepper motor is.

I also have this shield.

My question is, can I use the stepper motor as a normal motor? If so what wire(s) do I connect to ground and what wire(s) to 12V?

If not, can I use the driver shield above to power this thing or do I have to buy a stepper motor shield or a normal motor?

Hope someone can help.


A stepper motor is driven by switching power between its coils in a specific pattern, the advantage being that the rotation can be controlled precisely. It cannot be driven just by connecting + and - DC power to its wires.

Hang on to the stepper though. Do a little research on them to understand how they're used and I'm sure you'll come back around to finding a use for it.


You can use the stepper motor as a "normal" motor. Basically a stepper motor is made for precision positioning, whilst a normal motor is made for spinning at different speeds and/or different torques.

So what will happen is that the motor's movement will be like a the seconds hand in a clock. It is possible to spin it pretty fast, but not as fast as a DC motor.

It is possible to connect it and use it with that shield. Have a look at these:


Not sure if the stepper motor library can be used with this though. :\

This... is a hobby.


What do you mean by a "normal" motor? Although a stepper is generally used as a positioning device moving in discrete steps to a commanded position, it will run continuously though at a relatively low rpm compared to a brushed DC motor (usually <1000 rpm) and will have very little torque at higher speeds. It is also an inefficient motor, dissipating a lot of heat.
So the short answer is if you need continuous motion use a brushed DC motor. If you need precisely controlled motion, use a stepper.
The stepper you have is a bipolar motor and requires an H-bridge to run. Your driver will not work.

Go Up

Please enter a valid email to subscribe

Confirm your email address

We need to confirm your email address.
To complete the subscription, please click the link in the email we just sent you.

Thank you for subscribing!

via Egeo 16
Torino, 10131