Making a wireless switch

Discussion in 'General Electronics Chat' started by stoopkid, Mar 8, 2013.

  1. stoopkid

    Thread Starter Member

    Mar 3, 2011
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    1
    What would go in to making one's own very basic HIGH/LOW wireless(radio) switch? Could it be done for cheaper than tearing apart a $10 wireless doorbell or something like that? What exactly would need to go into the most basic form of this idea?

    Thanks.
     
  2. tracecom

    AAC Fanatic!

    Apr 16, 2010
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    1,393
    You could make a wireless switch with an IR receiver, a transistor, and a few other components. Then you could use a junk remote control to make it switch. That's about as cheap a way as I can think of.
     
  3. stoopkid

    Thread Starter Member

    Mar 3, 2011
    136
    1
    That would be the cheapest but I meant specifically radio switching so that I can do out of line of sight stuff.
     
  4. tshuck

    Well-Known Member

    Oct 18, 2012
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    I've seen numerous builds from a wireless doorbell, that would appear to be the cheapest.

    Unless, of course, you buy a bunch of those 433MHz, el-cheapo Tx/Rx pairs and a microcontroller to utilize them, but that's just a bunch of work;)
     
  5. stoopkid

    Thread Starter Member

    Mar 3, 2011
    136
    1
    Say I was still motivated to try it myself, what might I want to look into to get it started?
     
  6. absf

    Senior Member

    Dec 29, 2010
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  7. absf

    Senior Member

    Dec 29, 2010
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    Just in case you dont like to program a PIC. There are encoders and decoders specially designed to encode and decode the RF 315/433 Mhz modules. They are PT2262 and PT2272 chips. The datasheets of these chip will tell you how to hook them up. The completed products are also available..

    http://www.escol.com.my/Sensors.html

    There are also simple kits that would operate a relay when the transmitter is pressed.. In this kits only simple chips like 4011 and LM567 are used.

    http://www.escol.com.my/kits/ES-031.html

    The above are just some examples that you can easily get by Googling. Motorola also makes the encoder and decoder chips for the remote control modules but I forgot their part numbers. Just do a search and I'm sure you can find them easily.:)

    Allen
     
  8. shortbus

    AAC Fanatic!

    Sep 30, 2009
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    $10 is pretty inexpensive, unless you are making many of these. For the $10 you are getting a item that already has been proven to work. All of the trouble shooting has been done for you, and that some times is no small part of a project.

    If you need many of these buying one and copying the circuit MAY be cheaper in the end. IF you consider your time as a zero cost.
     
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