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Gough Lui's Blog Project Adverpising: A Wi-Fi Beacon with Raspberry Pi
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  • Author Author: Gough Lui
  • Date Created: 25 Jul 2015 6:01 AM Date Created
  • Views 1502 views
  • Likes 1 like
  • Comments 12 comments
  • raspberry
  • wifi
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  • pi_networking
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  • raspberry_pi
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Project Adverpising: A Wi-Fi Beacon with Raspberry Pi

Gough Lui
Gough Lui
25 Jul 2015

Some of you might have gotten a little suspicious seeing that I had stocked up on Wi-Pis earlier. Well, you are right to be suspicious, as I was thinking of a little Wi-Fi-based project.

 

image

 

I came to the realization that a wireless network's SSID can serve a "beacon" and "advertising" opportunity. Coupled with some nefarious networking tricks on the Raspberry Pi, I can make a small device that I can carry with me to advertise my site to everyone that is nearby.


How did I do it? Find out at my posting on my blog at http://goughlui.com/2015/07/25/project-adverpising-a-wi-fi-beacon-with-raspberry-pi/

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Top Comments

  • mcb1
    mcb1 over 9 years ago +2
    Some would call that vain ...however you're a geek so I don;t think it counts. Nice work ...interesting, now what are you selling? Mark
  • Problemchild
    Problemchild over 9 years ago in reply to mcb1 +2
    Great you've reinvented the captive portal ....in fact so captive that it doesn't go anywhere
  • Gough Lui
    Gough Lui over 9 years ago in reply to mcb1 +2
    Um. Well, I've got about bursts of energy, each totalling roughly 0.1mJ from the point of emission, emitted with regularity at about 100ms intervals in approximately a 22Mhz bandwidth centred about 2.412Ghz…
  • Problemchild
    Problemchild over 9 years ago in reply to mcb1

    Toasty ...what more can be said image

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  • mcb1
    mcb1 over 9 years ago in reply to Problemchild

    Is this like  the way you can use the heat from the manifold of the engine to cook your dinner ?

    I believe they had all sorts of issues with that one ... including unwanted smells from the engine.

     

    Also did the pie have a "designer" hole in it to receive the valve ?

    No the final valve was enclosed in a perforated metal shield to prevent stray RF.

    It was a convienient height for the pie to sit on top, and then slide the transmitter back in.

     

    Absolute temperature control was achieved by sliding the transmitter out a little.

     

    Mark

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  • Problemchild
    Problemchild over 9 years ago in reply to mcb1

    Is this like  the way you can use the heat from the manifold of the engine to cook your dinner ?

    Also did the pie have a "designer" hole in it to receive the valve ?  image

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  • mcb1
    mcb1 over 9 years ago in reply to Problemchild

    at least no free heating of it

    Funny tale about that when I worked for NZ Post/Telecom as a Radio Tech,

     

    In those days when we had valve transmitters, the taxi channel used to go most of the time.

    If you had brought a pie for lunch, there was just enough room to sit just above the final valve where it remained nicely warm until lunchtime .... image

     

    So that was free heating ...... until those damn transistor things came along ...they'll never catch on. image

     

    Mark

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  • Problemchild
    Problemchild over 9 years ago in reply to mcb1

    Just goes to show there's no such thing as a free lunch ...or at least no free heating of it image

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