Simple RF On/Off switch

Discussion in 'The Projects Forum' started by sporkmasta, Dec 25, 2012.

  1. sporkmasta

    Thread Starter New Member

    Dec 24, 2012
    1
    0
    Hi all,

    First time posting here, sorry in advance for I am not too experienced with electronics.

    I am looking to find a way to make a keychain device (must be small) that would turn on an LED when it comes in proximity to my car. I am thinking of doing this using an RF transmitter in the car that always sends a signal out, which is received by the keychain receiver, lighting up the LED whenever the RF signal is received. I want to use RF for the long distance and ability to go through walls. I feel like this should be a relatively simple circuit, but am having trouble finding the right components. Would any of you fine folk have any suggestions for components, vendors, wiring diagrams, and/or advice? Any help would be greatly appreciated!

    Thank you! :D
     
  2. maddage19

    New Member

    Dec 29, 2012
    7
    0
    dear friend, i also need to make same kind of application , i suppose to use
    315Mhz WL RF transmitter and receiver link kit , which i brought from ebay,
    please any one have any idea for making it,, help me,
     
  3. absf

    Senior Member

    Dec 29, 2010
    1,493
    372
    If you know how to program PIC, the links below would be helpful to you...

    http://jap.hu/electronic/codec.html

    http://www.cytron.com.my/viewProduct.php?pid=AigaJw8ZFSsNLQckJiwCJLr9gLfrjz36F784ihOkttg=&store=

    All the files and source codes are downloadable.

    Allen
     
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