DC motor control with Remote Garage door receiver

Discussion in 'The Projects Forum' started by freyapilot, Dec 14, 2010.

  1. freyapilot

    Thread Starter New Member

    Dec 14, 2010
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    0
    Hi All,

    Looking for some direction for a project using either 2-3v dc motors or one dc motor and a reversing circuit.

    End product needs to continuously rotate an object clockwise at about 10 rpm after button 1 of a garage door remote has been pressed and when button 2 is pressed the unit needs to rapidly rotate at least double the clockwise speed but anti-clockwise and only for approx 3 seconds.

    I have the garage door receiver and transmitter unit. It has 2 latching relays. Press button 1 and first relay closes, press button 2 and first relay opens and second relay closes.

    Not sure if this would be easier with 2 motors because of the high amperage draw from sudden reversing required on a single motor design.

    Thoughts so far are to use a 555/6 for PWM speed control and the 3 second time function and to go with two motors.

    I could power the reverse motor with full power and the forward motor via the PWM circuit.

    When button 2 is pressed the 555 would trigger on and then off after 3 seconds cutting power to the reverse motor and resetting the timer.

    All wet or could this work?

    Would love help drawing up the schematic :)
     
  2. blueroomelectronics

    AAC Fanatic!

    Jul 22, 2007
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    3V motors? Is this for Barbie's garage?
     
  3. freyapilot

    Thread Starter New Member

    Dec 14, 2010
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    0
    They are Mabuchi motors rated 3-12vdc. Should have added that.
     
  4. blueroomelectronics

    AAC Fanatic!

    Jul 22, 2007
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    What are you trying to motorize with those toy motors?
     
  5. freyapilot

    Thread Starter New Member

    Dec 14, 2010
    4
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    They are going to rotate a 6 inch plastic disc.
     
  6. blueroomelectronics

    AAC Fanatic!

    Jul 22, 2007
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    A six inch paper disk? How fast? Is there anything attached? What sort of torque do you need?
     
  7. freyapilot

    Thread Starter New Member

    Dec 14, 2010
    4
    0
    Fastest they will rotate would be about 30 rpm. Pretty slow. They are geared and have 300 oz/in of torque. Way more than I need.
    The disc weighs about 1/2 pound.
     
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