Wireless On/Off Switch

Replies

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  Harshad Italiya

  You can use RFM70 or RFM22 modules its communication is SPI based and i've implement same system using these. Let me know if you need any more information.
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  Chebyshev

  These are similar to XBees, I agree they are cheaper, but at $10 a piece it's still not in my budget, I was looking into building my own from scratch, since I have access to parts, such as crystals, caps, resistors, and pcb etching machine.
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  Harshad Italiya

  Okey I thought use of RFM70 or RFM22 makes your system more reliable as you can add your own protocol and communication frequency.
  
  for low cost i think you have to give a try to RFM60 as a Transmitter mostly use as a remote and RFM83 as a Receiver. working on 434MHz
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  Harshad Italiya

  Okey I thought use of RFM70 or RFM22 makes your system more reliable as you can add your own protocol and communication frequency.
  
  for low cost i think you have to give a try to RFM60 as a Transmitter mostly use as a remote and RFM83 as a Receiver. working on 434MHz
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  Chebyshev

  I can't seem to find a place to buy them, besides china. Also, they seem to me programmable which doesn't interest me, since I either want an on or off
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  Harshad Italiya

  Chebyshev

  I can't seem to find a place to buy them, besides china. Also, they seem to me programmable which doesn't interest me, since I either want an on or off

  Ok, I'll give you one more number they doesn't require programming. 😀
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  Harshad Italiya

  Here is one reference PDF You can design as per your application from this :- PDF
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  nowire9

  Not sure if you're still working on this idea or not, but godfather is right - the RFM modules are good choices for this project (RFM12B, RFM22B, RFM70). All 3 modules are inexpensive and they lend themselves well to a home automation project like you're describing - $5 (RFM70), $6 (RFM12B), $10 (RFM22B). The RFM12B and RFM22B have significantly longer range compared to the RFM70, and operate in different freq bands (RFM12B & RFM22B: 433MHz, 915MHz, RFM70: 2.4GHz). Here is a site with AVR/Atmega code examples for each of these 3 modules: #-Link-Snipped-#, #-Link-Snipped-#, #-Link-Snipped-#.