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HOW TO FIND THE COILS IN SMALL STEPPER MOTOR ( Only 4 WIRES)


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SANATH EMBEDDED

Tue Jul 31 2007, 11:33PM

Registered Member #2561

Joined: Tue Jul 24 2007, 11:26PM

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Hi ,
I have bought a stepper motor which is having only 4 wires and also small in size. Usually stepper motors will be having 5 or 5 wires with 2 pair of coils and 1 common,so we can easily find out the terminals. but in this how I can find out the common and other terminals, I want to interface to the 8051 controller for the complete PROXIMITY ROBOT project since with that stepper motor I can't make the Choasis and other thing, since it is big in size.

CAN ANY ONE HELP IN THIS MATTER.

REGARDS n THANKS
Sanath Mcx

With Regards,

Sanath Kumar
Mangalore/ Bangalore/Pune

Email: sanathmcx@rediffmail.com

" Embedded System is my Passion "

Ajay

Wed Aug 01 2007, 01:24AM

Rickey's World Admin

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Posts: 3757
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Hi sanath,
I think you've got a Bipolar stepper motor which has two coils separated with no common. it has 4 wires instead of 5 or 6 wires in case of uni polar stepper motor. Below is a digram of Bipolar stepper motor

To check which wire for which coil.. simply do the connectivity test

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SANATH EMBEDDED

SANATH EMBEDDED

Wed Aug 01 2007, 02:03AM