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Remote keyless circuit

Discussion in 'General Electronics Discussion' started by kene, Feb 12, 2014.

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  1. kene

    kene

    3
    0
    Feb 9, 2014
    Pleas does anyone have ideas on how to build this circuit?

    I want to build a remote to open doors and gates
     
    Last edited by a moderator: Feb 14, 2014
  2. jpanhalt

    jpanhalt

    426
    4
    Nov 12, 2013
    What distance? What frequency? What degree of security do you need? Have you considered safety laws (i.e., protection from crushing children and pets)?

    In other words, why, when you can buy one for a few dollars? And maybe more to the point, why duplicate posts? What's the urgency?

    John
     
  3. kene

    kene

    3
    0
    Feb 9, 2014
    BETWEEN 25 TO 50 FT, AT 3I5MHZ, AND WITH ENCRYPTED ROLLING CODES. I HAVE TAKEN NOTE OF THAT.
     
  4. davenn

    davenn Moderator

    13,618
    1,882
    Sep 5, 2009
    PLEASE DONT SHOUT
     
  5. jpanhalt

    jpanhalt

    426
    4
    Nov 12, 2013
    This might help you get started on the rolling code design: http://ww1.microchip.com/downloads/en/DeviceDoc/41099D.pdf

    Here are some pre-built receivers and transmitters: http://www.buildcircuit.com/how-to-use-rf-module-with-arduino/
    Most people tend to use integrated chips, like those from Melexis, Linx, and others.

    If you really want to build those circuits yourself, I suggest trying Google. Several designs popped up on a search, but you will definitely need more electronic equipment to get such circuits up and running.

    An then, there is the mechanical part. Do you want to build that yourself too?

    John
     
  6. kene

    kene

    3
    0
    Feb 9, 2014
    THANKS FOR THE RESPONSE, NO I JUST WANT TO BUILD THE ELECTRICAL PART AND ADD IT TO THE DOOR.
     
  7. davenn

    davenn Moderator

    13,618
    1,882
    Sep 5, 2009
    I wont ask again
    PLEASE stop typing in capitals

    Dave
     
  8. davenn

    davenn Moderator

    13,618
    1,882
    Sep 5, 2009
    Have you even googled circuits for remote keyless circuits ?

    it would be a really good place to start

    Dave
     
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