Wireless Transmitter/Receiver

Discussion in 'The Projects Forum' started by bocochoco, Jul 17, 2009.

  1. bocochoco

    Thread Starter New Member

    Jul 17, 2009
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    I'm new here, please be gentle ^_^.

    So I'm looking to build a small wireless transmitter and receiver (two boards). The specifics don't really matter all that much except that range is important, at least 30 foot range, 50 feet is optimal. I don't even need to decipher the signal on the receiving end.

    This is what I'm trying to do. I build model rockets with my friends and our launcher broke. It is basicly a momentary switch that uses 4 AA batteries to ignite a small starter which ignited the engine. I'm sure that I could build a direct replacement quite easily, but I'd like to make it wireless. What I would need is a transmitter circuit that transmits on any wavelength and when the receiver picks up that signal, it sends enough power to the igniter to ignite the rocket engine.

    How complicated is this? I haven't been able to find a good guide on how to do this, and I'm not sure what parts I would need. I have an arduino that I use for other projects, and I am not a complete newbie to circuitry. Can someone help me figure this out?
     
  2. blueroomelectronics

    AAC Fanatic!

    Jul 22, 2007
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    For model rocketry stick with a 30' - 50' cable version for safety.
     
  3. bocochoco

    Thread Starter New Member

    Jul 17, 2009
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    That is what we have been using. Our current project, 30-50 may not be good enough. Is there a simple receiver/transmitter circuit that would work for me?
     
  4. blueroomelectronics

    AAC Fanatic!

    Jul 22, 2007
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    Why is 50' not good enough? It's the range you wanted in the original post.
     
  5. bocochoco

    Thread Starter New Member

    Jul 17, 2009
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    This one is rather big. More range is better. If you know of a circuit or something that I could pickup from radioshack, it would help me out immensely.
     
  6. bocochoco

    Thread Starter New Member

    Jul 17, 2009
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  7. ELECTRONERD

    Senior Member

    May 26, 2009
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    Hmmm....this is definitely feasible, but we need some more details. What starts the rocket? A match or something?

    You'll need to figure out what frequencies are used for RC planes, rockets, and gliders so you know what frequency to operate at.
     
  8. GetDeviceInfo

    Senior Member

    Jun 7, 2009
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    I would strongly suggest that if your igniting rockets, that you use a system that transmits a specific code, and a reciever that is capable of identifying that code. Transmitter/reciever/transcievers that I have had good success with is the RFM01/01/12.
     
  9. ELECTRONERD

    Senior Member

    May 26, 2009
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    That's a very good idea because you could get interference that would accidentally start your rocket...:eek:. Nice going GetDeviceInfo!
     
  10. Steve C

    Active Member

    Nov 29, 2008
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    cheapest option you've got is to buy a car keyless entry on ebay. Cheapest one you can find.

    Though if you want to do it stupid, you can pay extra for a 2 way transmitter that will tell you if the rocket launched. Which might be neat seeing as the transmitters are supposed to have a 1 mile range.

    but you can get the entry level ones for dirt.

    Add a 12 volt battery and you are good to go. You can pay retail and get a small 12V battery from Frys for $26 or scavenge for far, far less. I buy 8 Ah batteries at the surpluss for $5 a pop. You can probably do it even cheaper. Nice that you can just keep charging the battery up.
     
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