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details of stepper motor used in floppy drive

Discussion in 'Datasheets, Manuals or Parts' started by HiteshDR, Oct 31, 2007.

  1. HiteshDR

    HiteshDR New Member

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    i have tried already

    hi Nigel,
    thank you.

    i have tried it already this solution but motor was not rotating and it just heating up because of power for more time.
    may be its step angle is too slow and that also i dont know.

    am i on right track, sir?
    if yes then i think we have to look for any other solution sir.
     
  2. ericgibbs

    ericgibbs Well-Known Member Most Helpful Member

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  3. Nigel Goodwin

    Nigel Goodwin Super Moderator Most Helpful Member

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    How were you feeding it?, a bi-polar stepper requires two H-bridges to drive it (and obviously the correct sequence) - a LOT more complicated than a uni-polar motor.
     
  4. dave

    Dave New Member

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  5. HiteshDR

    HiteshDR New Member

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    Using L298 & L297 both

    yes sir,

    i have used stepper motor with the help of L298 & L297 circuitry.
    i have checked with any one of these and both also but no ouput is coming.
    its not rotating and just motor is heating up after few seconds.
    is it possible sir motor may be not working properly.
    this doubt cam because my floppy drive is old.
     
  6. Nigel Goodwin

    Nigel Goodwin Super Moderator Most Helpful Member

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    You might check http://home.att.net/~wzmicro/l298.html which has some details?.

    But to check your motor get two pieces of wire and a battery, and manually step the motor - you will be able to work out the required connections and sequence needed in this way - it would be VERY rare for the motor to be faulty, steppers are very reliable.
     
  7. HiteshDR

    HiteshDR New Member

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    i have tried in this way

    I have checked the resistor between different wires of motor.
    using this method i have assumed that the two wires between which i was getting resistor that is the coil.
    i have got two pairs of coil in my motor.
    by the way how can i check my motor mannually ??
     
  8. Nigel Goodwin

    Nigel Goodwin Super Moderator Most Helpful Member

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    Just with a battery and a couple of pieces of wire - you have two coils, and two ways round you can connect them. You should be able to find the sequence that moves it either way - four steps required.
     
  9. HiteshDR

    HiteshDR New Member

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    sir, i am not getting you.
    can you please tell me in detail please.

    by the way sir how can i check connect the four wire motor with battery.
    and how can i test it because according to me its step angle is too small.
    i am guessing because it's used for read/write head.
    what you ar thinking sir...???
     
  10. Nigel Goodwin

    Nigel Goodwin Super Moderator Most Helpful Member

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    You simply connect the battery across one of the coils and the motor moves, the trick is to find the sequence that moves it in the same direction every time. If you can't see it move, then it's probably not moving at all.
     
  11. blueroomelectronics

    blueroomelectronics Well-Known Member

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  12. jbeng

    jbeng Member

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    Probably a bit out of his price range ... :D
    Jeff
     
  13. HiteshDR

    HiteshDR New Member

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    Thank you Nigel

    Thank you Nigel...

    tahnk you to you all too..
     

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