how to move a 12v dc motor back and forth

Discussion in 'General Electronics Chat' started by cliff_rayner, Aug 14, 2013.

  1. cliff_rayner

    Thread Starter New Member

    Aug 14, 2013
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    im doing a project that needed to move 3 motor back and forth in sequence.
    the motor need to move forth in 180 degree and reverse to its normal position.the second and third will also do the same thing but in sequence.
    how should i do that? and am i need to use a timer?
     
  2. MaxHeadRoom

    Expert

    Jul 18, 2013
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    If you need precise control you will either need some form of encoder feedback OR use stepper motors, most likely the latter would be the most practical.
    What do you intend controlling them with?
    Max.
     
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  3. #12

    Expert

    Nov 30, 2010
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    6,852
    Stepper motors are good at doing exact amounts of rotation. I think you would need a micro-controller like a Picaxe or an Arduino.
     
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  4. cliff_rayner

    Thread Starter New Member

    Aug 14, 2013
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    im been thinking to use stepper motor and yes i need to use microcontroller too..anyone can make a circuit diagram for my problem?
     
  5. MaxHeadRoom

    Expert

    Jul 18, 2013
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    If DC motors and if the rotation is under load at slow speed, you may get away with limit switches, but still not guaranteed precise.
    Also on the PicMicro site there is app notes on both DC & Stepper motor control, with circuits.
    http://www1.microchip.com/downloads/en/devicedoc/41233a.pdf
    .Max.
     
    Last edited: Aug 14, 2013
  6. cliff_rayner

    Thread Starter New Member

    Aug 14, 2013
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    actually im trying to make an automatic t-shirts folding machine..and i need it to work in high speed in order to fullfill my objective which is:
    1.to fold a shirt in a quick of time..
     
  7. MaxHeadRoom

    Expert

    Jul 18, 2013
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    Other than servo's with their higher overhead, then Steppers would be the logical choice.
    Max.
     
  8. ScottWang

    Moderator

    Aug 23, 2012
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  9. shortbus

    AAC Fanatic!

    Sep 30, 2009
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    Sounds like a place to use cams driven by a single motor to me.
     
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