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You are here: Home / Topics / stepper motor… please help

stepper motor… please help

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Microcontroller › 8051 › stepper motor… please help

  • This topic has 4 replies, 4 voices, and was last updated 13 years, 3 months ago by AJISH ALFRED.
Viewing 5 posts - 1 through 5 (of 5 total)
  • Author
    Posts
  • April 6, 2012 at 8:48 am #1523
    cool
    Participant

     

    hii.

    i have interfaced a stepper motor with my microcontroller

     

    the stepper motor has a voltage rating of 24 volts

    i have used ic l293d as a stepper motor driver to control my stepper motor.

    i am using wave drive mode(single phase) to rotate my motor ..because full drive causes the l293d to over heat..

     

    though the motor rotates perfectly as programmed

     

    but

    1) it stops to rotates under slightest load.

     2) l293d heats too much 

     

    plz guide me how i can increase the power of my stepper motor…

    April 6, 2012 at 4:29 pm #7399
    Dexter
    Participant

    use gearde servo motor to have higher torque

     

    April 12, 2012 at 9:26 am #7418
    AJISH ALFRED
    Participant

    Increase the off time between pulses to avoid overheating of the IC. To get maximum power you should perfectly tune the pulse width at a particular load.

     

    April 13, 2012 at 11:57 pm #7442
    D.V.G. Krishna
    Participant

    insted of L293D (works only at 600mA current)

    use ULN2003 

    its a darlington array 

    for driving stepper motor you need connect the common pin of stepper and 9th pin of 2003 to supply and 8 pinof 2003 to gnd.

     

    dont forget connect the gnd of microcontroller to gnd of 2003

     

    the connect the remaining terminals of stepper motor to pin 16,15,14,13 of 2003 . then the controll pins will be 1,2,3,4 respectively

     

    http://homemaderobo.blogspot.in/2012/03/stepper-motor.html

     

     

    April 14, 2012 at 6:10 pm #7448
    AJISH ALFRED
    Participant

    Plz ell me the part number of the motor? Are you powering the motor l293d using same 5V supply? L293d is normally used to drive DC motors in both directions. For stepper motor driving, you better use ULN200X series ICs.

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