Super simple stepper motor controller - Electronic Circuits Projects Diagrams Free

RAKS · 22nd January 2008, 03:56 AM

The circuit shown above can be used to control a unipolar stepper motor which has FOUR coils (I've swiped it off an old fax machine). The above circuit can be for a motor current of up to about 500mA per winding with suitable heat sinks for the SL100. For higher currents power transistors like 2N3055 can be used as darlington pair along with SL100. The diodes are used to protect the transistor from transients.

View Circuit Click Here.

Marks256 · 22nd January 2008, 04:03 AM

When you say something is "shown above", it is usually a good idea to have something "above" to show!

Anyways, looks like it might come in handy.

bananasiong · 22nd January 2008, 04:19 PM

Wow.. Nice combination of logics

I've just started the Finate State Machine lesson which involves lots of logics.

*EDIT: Just figure out it drives 2 coils each time for higher torque.

Mike, K8LH · 22nd January 2008, 05:23 PM

Torque stepping (energizing two coils at a time) is good.

Another alternative might be to use an 8 pin PIC microcontroller instead of the TTL logic IC and provide "Step" and "Direction" inputs. If anyone's interested I'll write the code and post it here for all to enjoy...

Mike

Funny NYPD · 22nd January 2008, 09:31 PM

better post it in the forum.

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

Similar Threads
Thread	Thread Starter	Forum	Replies	Latest
Setting stepper motor to 'home' position.	MrNobody	Micro Controllers	14	3rd October 2007 03:03 PM
Stepper problem	ecid	General Electronics Chat	5	27th June 2006 05:38 PM
Stepper Motor Driving Using PIC16F74	t_anjan	Electronic Projects Design/Ideas/Reviews	0	31st January 2006 06:13 PM
Stepper code for PIC	raitl	Micro Controllers	6	15th February 2005 01:44 PM
stepper motor	jim bro	Electronic Projects Design/Ideas/Reviews	0	26th May 2003 08:54 PM

22nd January 2008, 03:56 AM	(permalink)
RAKS	Super simple stepper motor controller The circuit shown above can be used to control a unipolar stepper motor which has FOUR coils (I've swiped it off an old fax machine). The above circuit can be for a motor current of up to about 500mA per winding with suitable heat sinks for the SL100. For higher currents power transistors like 2N3055 can be used as darlington pair along with SL100. The diodes are used to protect the transistor from transients. View Circuit Click Here. __________________ Blatent advertising deleted! - moderator.

22nd January 2008, 04:03 AM	(permalink)
Marks256	When you say something is "shown above", it is usually a good idea to have something "above" to show! Anyways, looks like it might come in handy. __________________ There is no "I" in "team", unless Apple makes it... Then it would be iTeam.

22nd January 2008, 04:19 PM	(permalink)
bananasiong	Wow.. Nice combination of logics I've just started the Finate State Machine lesson which involves lots of logics. EDIT: Just figure out it drives 2 coils each time for higher torque. __________________ Superman returns.. Last edited by bananasiong; 22nd January 2008 at 04:30 PM.*

22nd January 2008, 05:23 PM	(permalink)
Mike, K8LH	Torque stepping (energizing two coils at a time) is good. Another alternative might be to use an 8 pin PIC microcontroller instead of the TTL logic IC and provide "Step" and "Direction" inputs. If anyone's interested I'll write the code and post it here for all to enjoy... Mike

22nd January 2008, 09:31 PM	(permalink)
Funny NYPD	better post it in the forum. __________________ F.N.