Stepper motor driver - Page 2 - Electronic Circuits Projects Diagrams Free

Jabir · 12th April 2006, 04:20 PM

Hai all

i solved the problem.....

Tanks for sugessions and help and special cheers to Mike, K8LH :lol:
ur logic works .

Regards to all..................................bye
Jabir

lavanyarammohan · 15th April 2006, 04:35 AM

hi am using a stepper motor taken from a floppy drive.. it has 4 wires colored blue,white,red and yellow. am unable to find the cils properly. can any one suggest how to.. which wire cats as a,a-.. am using L293D drive ic to drive the motor. so can anyone help me in finding out the coil values..

**Nigel Goodwin** · 15th April 2006, 06:13 AM

I suggest you google for 'stepper motor tutorial', there's plenty of help out there.

As your motor only has four wires it's going to be a bipolar motor, so you should have two completely seperate windings, easily indentified with a meter.

Once you've found the two windings, use a battery and a couple of pieces of wire to find the step sequence you need.

For a start, label the wires, 1-2 for one winding, and 3-4 for the other. Apply the battery, positive to 1 and negative to 2, and see which way it moves, then apply positive to 3 and negative to 4, and see if it moves the same way - you now know the polarity of the coils.

Jabir · 15th April 2006, 05:41 PM

hey lavanya ram mohan..

i lke that name !!!!!!!

use this figure for lead identification...

JABIR

bibinjohn · 3rd June 2006, 11:46 PM

go for some transistor based one. U can directly connect TIP to microcontroller port. I have done the same with aVR microcontroller
refer page41
MY EXPERIENCE IN PROGRAMMIGN AVR MICROCONTROLLER IN C USING WINAVR/AVRGCC

you can get it from yahoo group-booksbybibin
http://groups.yahoo.com/group/booksbybibin/

comments about this book
http://www.booksbybibin.blogspot.com/

Dr-Chambers · 28th February 2008, 01:06 PM

Quote:

Originally Posted by bananasiong

here is the circuit that i just tried! it works with very high torque. i can drive the stepper in 12V with 5V signal.

any npn can be used in this circuit, as long as they can drive up to 800mA.

make sure that this circuit and the microcontroller have the common ground, i mean the -ve port of microcontroller should be connected to the -ve terminal of the supply.

if u want to drive the stepper motor higher than 5V, don't connect the D5, D6, D7 and D8 to the +ve port of the microcontroller, connect them to the Vcc.

it really works!!

Just to confirm what stepper motor is this for?It looks like a unipolar one.

15th April 2006, 04:35 AM	(permalink)
lavanyarammohan New Member	stepper motor coil identification hi am using a stepper motor taken from a floppy drive.. it has 4 wires colored blue,white,red and yellow. am unable to find the cils properly. can any one suggest how to.. which wire cats as a,a-.. am using L293D drive ic to drive the motor. so can anyone help me in finding out the coil values.. __________________ lavanaya

15th April 2006, 06:13 AM	(permalink)
Nigel Goodwin Super Moderator	I suggest you google for 'stepper motor tutorial', there's plenty of help out there. As your motor only has four wires it's going to be a bipolar motor, so you should have two completely seperate windings, easily indentified with a meter. Once you've found the two windings, use a battery and a couple of pieces of wire to find the step sequence you need. For a start, label the wires, 1-2 for one winding, and 3-4 for the other. Apply the battery, positive to 1 and negative to 2, and see which way it moves, then apply positive to 3 and negative to 4, and see if it moves the same way - you now know the polarity of the coils. __________________ PIC programmer software, and PIC Tutorials at: http://www.winpicprog.co.uk

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12th April 2006, 04:20 PM	(permalink)
Jabir New Member	Hai all i solved the problem..... Tanks for sugessions and help and special cheers to Mike, K8LH :lol: ur logic works . Regards to all..................................bye Jabir

3rd June 2006, 11:46 PM	(permalink)
bibinjohn Experienced Member	go for some transistor based one. U can directly connect TIP to microcontroller port. I have done the same with aVR microcontroller refer page41 MY EXPERIENCE IN PROGRAMMIGN AVR MICROCONTROLLER IN C USING WINAVR/AVRGCC you can get it from yahoo group-booksbybibin http://groups.yahoo.com/group/booksbybibin/ comments about this book http://www.booksbybibin.blogspot.com/