Speed Control and Direction control for 24 volt 250watt ( 8-10 amp) DC motor

Discussion in 'The Projects Forum' started by Erac, Aug 7, 2010.

  1. Erac

    Thread Starter New Member

    Aug 7, 2010
    8
    0
    I have a 24 volt 25 watts 8 amp DC motor. How can I possibly control its speed and direction?

    Please help...

    Thanks
     
  2. K-Young

    Member

    Aug 22, 2009
    27
    1
    Your best bet is to use a PWM method to control a DC motor. There are a lot of options out there. You can design the circuit yourself using a microcontroller or buy a kit.
     
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  3. Erac

    Thread Starter New Member

    Aug 7, 2010
    8
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    Thanks for the reply k-young!

    I bought this motor driver ( K243) http://secure.oatleyelectronics.com/files/K243notes.pdf ,but I want to replace the potentiometer that controls the direction of the motor (When the potentiometer is centered the motor does not turn....Rotating it clockwise makes the motor turn one way...anticlockwise..the other..).

    I want the direction of my motor, to be controlled by my arduino micocontroller. Do you have any idea how?


    Hope for your support,
    Erac
     
  4. mik3

    Senior Member

    Feb 4, 2008
    4,846
    63
    You can buy a digital pot and control it with the Arduino.
     
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  5. BillB3857

    Senior Member

    Feb 28, 2009
    2,400
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    Erac likes this.
  6. Erac

    Thread Starter New Member

    Aug 7, 2010
    8
    0
    Thanks for the help guys!

    I'm thinking of using a digital pot to be controlled by my arduino microcontroller, but it would be much better if my arduino microcontroller can directly control the direction and speed by sending pulses.

    http://secure.oatleyelectronics.com/files/K243notes.pdf ( K343 data sheet):

    If I connect the SIG ( k243 motor controller) to the digital pin of my microcontroller and GND ( k243) to the GND pin ( microcontroller) and send pulses, would that possibly work? Can I control the direction and speed of the motor?

    Help…
     
  7. BillB3857

    Senior Member

    Feb 28, 2009
    2,400
    348
    Read the item on Page 2 of your data sheet that has the header "1-2mS (Radio Control) INPUT". That should shed some light on the capability of the controller.
     
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