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Old 22nd February 2008, 09:47 PM   (permalink)
Unhappy Stepper motor

I am trying to control a stepper motor with microcontroller. Componet available:
Stepper motor
PIC 16F84A microconroller
I am not fimilar with building driver for my stepper motor.

Some specification about my bipolar stepper motor is 800mA, 5V, 7.5deg/phase. I know that without a driver my microconroller program is for nothing. Therefore, I need some guide on how to build stepper motor driver.
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Old 23rd February 2008, 01:45 AM   (permalink)
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You just need to send a bit pattern to an H bridge. Search this forum for bipolar, stepper and H bridge.
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Old 23rd February 2008, 04:06 AM   (permalink)
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A bipolar stepper motor will need two h-bridges, one for each coil of the stepper motor.

One chip with two h-bridges on board is the L293D, which is readily available. It has a beefier brother called the L298, which may be better as your motor pulls 800mA.

A typical stepping pattern to be sent from your micro to the h-bridges would be:

Code:
Step    H1a   H1b   H2a   H2b
  1      1     0     1     0
  2      1     0     0     1
  3      0     1     0     1
  4      0     1     1     0
  1      1     0     1     0
HTH

Last edited by acrylic; 23rd February 2008 at 04:08 AM.
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Old 28th February 2008, 10:15 PM   (permalink)
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I am not expert with microcontroller when you say sending stepping pattern from microcontroller to h-bridges you mean i send Hla=output signal high, Hlb output signal low some thing like that.

Another question does microcontroller send digital signal or analog signal?

http://www.jameco.com/Jameco/Products/ProdDS/117954.PDF this websites show the driver needed to be build for my stepper motor.

Because its hard to get mc3479p, I am trying to build my own driver.
Therefore I started this post, Btw what is the different between mc3479p driver ic, and H-bridge are they the same thing.

Last edited by uaefame; 28th February 2008 at 10:26 PM.
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Old 2nd March 2008, 09:43 PM   (permalink)
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Btw, i am a mechanical engineering.

Can anyone suggest an easy way to build a stepper motor driver bipolar! any website link or comment can help me!

tHANKS for understanding my pain
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Old 5th March 2008, 02:36 PM   (permalink)
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Not our fault you can't source the parts you need. There is mail order.

Much easier to drive a unipolar stepper.
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Last edited by blueroomelectronics; 5th March 2008 at 02:39 PM.
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Old 5th March 2008, 03:03 PM   (permalink)
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Quote:
Originally Posted by uaefame
Its getting boring out here where i live! i will keeep looking for other useful forum over the internet where many people respond!
If you're that bored then sign up to a dating agency and get yourself laid.
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Old 8th March 2008, 08:25 PM   (permalink)
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Why there won't be a tutorial section like advance thread where the summary of many thread is posted by a professional user.

And if anyone one want to tell me how to drive a stepper motor bipolar one i will be happy to listen! i don't like guide line use H-Bridge . I like to see schematic.
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Old 8th March 2008, 08:40 PM   (permalink)
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Here's one.
Plenty more on Google
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Old 9th March 2008, 03:42 AM   (permalink)
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Quote:
Originally Posted by uaefame
Its getting boring out here where i live! i will keeep looking for other useful forum over the internet where many people respond! this is my last words here i wish that people released that this forum suks and they must leave it sooooon.
Now get lost and stay out. I'm glad I never knew you.
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Old 9th March 2008, 11:17 PM   (permalink)
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Lol.

Thats all I can say
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Old 10th March 2008, 02:14 AM   (permalink)
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Quote:
Originally Posted by uaefame
This forum is useless! i keep checking no one even bother to writer something!
At least i respect that no one is free to help!

Therefore why the hell is this forum running i guess to help us not to say we have a forum website!

Its getting boring out here where i live! i will keeep looking for other useful forum over the internet where many people respond! this is my last words here i wish that people released that this forum suks and they must leave it sooooon.
We are all so sorry that we didn't all stop what we were doing to answer your question !!!!!!!!!!

Of course we will do Google searches for you as you must be far to busy to do it yourself.

Don't worry from now on we will all be waiting with baited breath day and night in anticipation to answer any quetion you post
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Old 10th March 2008, 12:30 PM   (permalink)
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This isn't the only time he's insulted this forum.
http://www.electro-tech-online.com/g...r-control.html

I can't believe that people are still helping him, which proves he's talking rubbish.

I wonder if his reputation is more negative that yours was Krumlink.
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Old 10th March 2008, 02:47 PM   (permalink)
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He's just jumped to 4 red squares.

Mike.
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