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Thread: $10 Stepper Motor Controller

  1. #1

    Default $10 Stepper Motor Controller

    Fisrt, it is not $10.00 if you dont have a BS2 Board...ˇˇ lolˇˇˇ alsoˇsome wire and aˇold floppy audio cable.

    But, if you go to Radio Shack, you can get:
    (4) IRF510 Mosfets
    (1) pack of diodes

    One circuit shows you how it's working with LED'sˇˇ the other is to connect directly to a Stepper Motor

    Also included a Very.... Very Low tech drivers for it. (if any of you programmer develop a better way to control the stepper motor, please post it)

    The PAUSE COMMAND is what controls the speed, change to less to go faster, more to go slower.

    Post Edited (willy1067) : 12/21/2007 10:50:00 PM GMT
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    Last edited by ForumTools; 10-01-2010 at 11:49 PM. Reason: Forum Migration

  2. #2
    PJ Allen's Avatar
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    I like that you did a preliminary "dry run" with LEDs.

    I see the tabs of your FETs are "perilously" close to each other (as a note to the unwary, each tab is each FET's Drain electrode.)
    Last edited by ForumTools; 10-01-2010 at 11:49 PM. Reason: Forum Migration

  3. #3
    Parallax Engineering

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    Curious…Your code shows LOOP at the beginning of the code (sort of) and DO at the end…The two are reversed so I am surprised your code does not generate a LOOP without DO error.

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    Chris Savage
    Parallax Tech Support
    Last edited by ForumTools; 10-01-2010 at 11:49 PM. Reason: Forum Migration

  4. #4
    Parallax Engineering

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    I would recommend attaching the actual code file to the original message to avoid confusion. Take care.

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    Chris Savage
    Parallax Tech Support
    Last edited by ForumTools; 10-01-2010 at 11:49 PM. Reason: Forum Migration

  5. #5

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    This circuit is fantastically simple!ˇ I have some questions about possible mods:

    Could this be ranˇusing a battery instead of a power supply to make it mobile?

    and could this setup be repeated 4 times on the same homework by using all 16 I/O pins and 16 FETs to run 4 steppers at different rates?
    ˇ
    Last edited by ForumTools; 10-01-2010 at 11:49 PM. Reason: Forum Migration

  6. #6

    Default

    You can use a Motorcycle battery with one of those cell phone charger to supply the BS board.

    for controlling more motors, try my other project;



    ˇhttp://forums.parallax.com/showthread.php?p=641605

    Post Edited (willy1067) : 10/11/2008 6:21:34 PM GMT
    Last edited by ForumTools; 10-01-2010 at 11:49 PM. Reason: Forum Migration

  7. #7

    Default

    Keep using this circuit, it's great, easy and simple.

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    Fernando Gomez


    ˇhttp://pinellas-sign-manufacturer.com

    Never compare yourself with anyone else, there will always be someone biggerˇorˇsmallerˇthan you.
    Last edited by ForumTools; 10-01-2010 at 11:49 PM. Reason: Forum Migration

  8. #8

    Default

    @willy

    You should consider submitting this to Gadget Gangster (http://gadgetgangster.com/) If you sign up on the site Nick will send you a free pack of boards. Something like the half board would be perfect.
    Last edited by ForumTools; 10-01-2010 at 11:49 PM. Reason: Forum Migration

  9. #9

    Default

    SRLM;

    That sounds as a good idea, maybe after I finish few other projects I am working on.

    Thanks

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    Fernando Gomez


    ˇhttp://pinellas-sign-manufacturer.com

    Never compare yourself with anyone else, there will always be someone biggerˇorˇsmallerˇthan you.
    Last edited by ForumTools; 10-01-2010 at 11:49 PM. Reason: Forum Migration

  10. #10

    Default

    Willy, I second SRLM's suggestion --- I would definately buy the kit ... even though this is pretty simple, the time saved is worth it in this price range.

    thanks for doing this and posting here... you just solved a problem for me.

    - Howard in Florida
    ~~~~~~~~~~~~

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    No matter how much you push the envelope, it'll still be stationery.
    Last edited by ForumTools; 10-01-2010 at 11:49 PM. Reason: Forum Migration

  11. #11

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    Willy
    Excellent stepper motor project and glad to see you're still here to answer questions since 2007. This would be a good project for adding additional stepper-motor-driven axes to pick and place industrial robots or basic hobby robot arms.
    humanoido
    Last edited by ForumTools; 10-01-2010 at 11:49 PM. Reason: Forum Migration

  12. #12

    Default

    Anybody know what it would take to run this on a propeller?
    I am guessing lower value resisters since the prop is running at 3.3V instead of 5V, but I don't know how to calculate that since I am not that familiar with FETs.

    Thanks,
    Doug
    Last edited by ForumTools; 10-01-2010 at 11:49 PM. Reason: Forum Migration

  13. #13

    Default

    wow! this is pritty cool! is there any way you could do this with a BS1? and then use a BS1 to control 2 accurately? this would be a perfect kit to make!

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    "When the government is afraid of the people there is liberty, when the people are afraid of the government, there is tryanny"


    ˇThomas Jefferson
    Last edited by ForumTools; 10-01-2010 at 11:49 PM. Reason: Forum Migration

  14. #14

    Default

    This is very nice... Even though this thread is about 2 years old, I'm glad I found it--it's a nice starting point for a CNC milling machine circuit.

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    Quit buying all those fixed voltage regulators, andˇget an Adjustable Power Supplyˇfor your projects!ˇ Includes an LED testing terminal!

    (no longer new) SD Card AdapterˇNow available!ˇ Add extra memory to your next Propeller project with ease!
    Last edited by ForumTools; 10-01-2010 at 11:49 PM. Reason: Forum Migration

  15. #15

    Default

    You still have that stuck in your head, huh? Well best of luck to you, and if you succeed I just may try it myself! You never know, after that maybe even you will wish to place a gas engine on a robot?

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    PG
    Last edited by ForumTools; 10-01-2010 at 11:49 PM. Reason: Forum Migration

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