Remote control of DC motor

Discussion in 'General Electronics Chat' started by xxxyyyba, Jan 23, 2016.

  1. xxxyyyba

    Thread Starter Member

    Aug 7, 2012
    249
    2
    Here is schematic that provides polarity inversion and switch off motor if it reaches one of its two end positions:

    [​IMG]

    SW1 is On-Off-On DPDT switch with the center position Off. SW 2 and SW 3 are limit switches. Motor voltage and amperage are 12V and 2A (max.). Is it possible to control motor remotely, instead of manual control using SW1? If yes, can you provide me schematic? Thanks in advance
     
  2. Lestraveled

    Well-Known Member

    May 19, 2014
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    What kind of remote control?? Wireless? Wired?
     
  3. xxxyyyba

    Thread Starter Member

    Aug 7, 2012
    249
    2
    Wireless, of course :)
    I need simplest solution. It's not neccessary to be remote control using RF, it can be using IR.
     
  4. MaxHeadRoom

    Expert

    Jul 18, 2013
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    Also a diode rectifier can be placed across each L.S. and then only two conductors out to the motor side.;)
    Max.
     
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  5. Lestraveled

    Well-Known Member

    May 19, 2014
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  6. Mr.Meter

    New Member

    Jan 24, 2016
    7
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    Wired - Replace SPDT switch with SPDT relay
    Wireless - I would recommend Xbee S1. Cheap and Easy to use assuming you have some electronics backround.
     
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  7. xxxyyyba

    Thread Starter Member

    Aug 7, 2012
    249
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    Can you explain it please? :)

    Lestraveled, Mr.Meter
    I would rather build than buy whole circuit :)
     
  8. MaxHeadRoom

    Expert

    Jul 18, 2013
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    Two conductors out to the motor with each FWD & REV N.C. L.S. all in series, wire a rectifier across each N.C. switch which when the switch is opened, it will be forward biased/allow for the opposite direction/polarity.
    I can post if still needed.
    Max.
     
  9. xxxyyyba

    Thread Starter Member

    Aug 7, 2012
    249
    2
    Something like this?

    [​IMG]
     
  10. MaxHeadRoom

    Expert

    Jul 18, 2013
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    Correct!
    Max.
     
  11. Wendy

    Moderator

    Mar 24, 2008
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    A simpler way is a fast power diode backwards across the motor, like you would use on a relay.
     
  12. MaxHeadRoom

    Expert

    Jul 18, 2013
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    How is that going to work with a reversing supply?
    The BEMF is nothing like in a relay or solenoid.
    Max.
     
  13. GetDeviceInfo

    Senior Member

    Jun 7, 2009
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  14. Wendy

    Moderator

    Mar 24, 2008
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    My bad, brain fart in progress.
     
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