Stalling Stepper Motor

Do stepper motors suffer (major) problems if they are stalled out??

A normal 12v dc motor can survive a short stall without major damage, a big stall results in smoke and nasty smells!

Have I ruined my stepper because of (minor) over-loading??

At the moment, when I run my stepper, with a Delay(250) in the command line, it seems to lose steps, either back-ward or forward.

Any comments from anybody that has had similar issues?



A stepper motor should be able to stall forever without damage - assuming, of course, the use of a specialized stepper motor driver.

Post a link to the datasheet for your motor and tell us what stepper motor driver you are using,
Also give details (volts and amps) of your motor power supply.

Stepper Motor Basics
Simple Stepper Code

Thank you Robin,

I'm using a UNO, Freetronics stepper driver, a NEMA17 motor, at 12v.

I will just have to go back to the basics, now that I know that the motor isn't at fault.


I don't know that stepper driver. Please post a link to its datasheet. I assume it is not just a simple h-bridge driver?


Stepper motors draw maximum power when stationary, stalling one that's trying to move generates less
heat, typically. They are run at their max continuous current all the time.