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Hot spot detector — Parallax Forums

Hot spot detector

LoopyBytelooseLoopyByteloose Posts: 12,537
edited 2008-07-14 10:16 in Propeller 1
Is there a way that a Propeller could recognize the field strength of a Wifi hotspot [noparse][[/noparse]2.4Ghz] and output to a simple bar of 10 LEDs?

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PLEASE CONSIDER the following:

Do you want a quickly operational black box solution or the knowledge included therein?······
···················· Tropically,····· G. Herzog [noparse][[/noparse]·黃鶴 ]·in Taiwan

Comments

  • Beau SchwabeBeau Schwabe Posts: 6,559
    edited 2008-07-13 17:42
    Kramer,

    No not directly. Typically you would have a down converter that will bring the frequency down to a more manageable level. In theory this is easy, but in practice this is not an easy DIY task.

    This is just an example, but if you took something like this...

    http://www.eham.net/reviews/detail/5109

    ...A down converter for 2.4GHz that brings the frequency down to 144MHz, you could then generate a 56MHz to 37MHz signal from the Propeller to "AND" it through a mixer with the 144MHz to further down convert the signal so that it's within the FM broadcast band (88MHz to 107MHz)

    If a 2.4GHz signal is indeed present, you should be able to detect it on a nearby FM radio ... If there is data present, you might even hear it.

    Again, this is not an easy task for the do-it-yourselfer.

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    Beau Schwabe

    IC Layout Engineer
    Parallax, Inc.
  • Jimmy W.Jimmy W. Posts: 112
    edited 2008-07-13 19:47
    you can use: http://www.lantronix.com/device-networking/embedded-device-servers/matchport.html
    that will let you scan networks, and get the signal strength, you can then also try and connect to the network and if it is protected you can exclude that network from the results
    Probably quite an overkill, but the answer is yes [noparse]:)[/noparse]
  • LoopyBytelooseLoopyByteloose Posts: 12,537
    edited 2008-07-14 10:16
    Thanks for your prompt reply.

    ▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
    PLEASE CONSIDER the following:

    Do you want a quickly operational black box solution or the knowledge included therein?······
    ···················· Tropically,····· G. Herzog [noparse][[/noparse]·黃鶴 ]·in Taiwan
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