Testing stepper motor

Community General Discussions
1

Hello,

I just received the following geared bipolar stepper motor:
robotshop.com/ca/geared-bipolar-stepper-motor-3v-555-oz-in.html

along with
robotshop.com/ca/sfe-easydriver-bipolar-stepper-motor-driver.html

  • Is the shaft locked? I can not make it turn by hand.

  • Is there a way to test the motor without using an Arduino?

  • How should I connect the 4 wires of the motor (red, black, green, blue) to the 4 ‘pins’ on the EasyDriver (labeled Motor A and B)?

Thanks.

2

Ok. I could not resist to grab one of my Arduino, and to do a complete setup, before going out :slight_smile:

Using the motor mechanical drawing available on the product page, I got the information about the wires’ color (robotshop.com/ca/content/PDF/mechanical-drawings-3319.pdf)

I quickly grabbed the code sample available on that page:
bildr.org/2011/06/easydriver/

I plugged everything. I can ear the motor doing the coded sequence (shown in the video - bildr.org/2011/06/easydriver/), but the shaft is not moving.

I removed the clip around the shaft.

Am I missing something?
Is the motor damaged?

Best.

3

Ok. I put the clip back in place.

I have been able to make the motor turn. But really slowly. Could it be that the EasyDriver I have is not providing enough current ? (robotshop.com/ca/sfe-easy…or-driver.html)

I have ordered that driver today - robotshop.com/ca/big-easy-driver-bipolar-motor-controller.html

Thanks

4

We are not sure which clip you removed but it was probably not a good idea. Normally steppers have a clip on the shaft holding the motor together.

Also, if your motor is not turning, then you might have wired the phases wrongly. try inverting one of them.