Emf detector circuit help

Discussion in 'Wireless & RF Design' started by Deltafee, Oct 16, 2016.

  1. Deltafee

    Thread Starter New Member

    May 22, 2015
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    hello i am trying to build a emf detector, I've tried an antenna in series to a 3.3 M ohm resistor and a volt meter and then the resistor in series to ground. But that didn't work, I was wondering if anyone has a circuit that works?
     
  2. #12

    Expert

    Nov 30, 2010
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  3. BR-549

    Well-Known Member

    Sep 22, 2013
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  4. Sensacell

    Well-Known Member

    Jun 19, 2012
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    What are you expecting it to do?

    That circuit is not really an "EMF" detector, more like a crude static electricity detector.
     
  5. Deltafee

    Thread Starter New Member

    May 22, 2015
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    So What I would like to do is kind of like this detector https://www.amazon.com/KII-Deluxe-B...TF8&qid=1476654779&sr=8-5&keywords=emf+meters but I plan on connecting the circuit to raspberry pi to log the readings. I got that type of circuit from http://www.instructables.com/id/Arduino-EMF-Detector/ I know raspberry pis don't have analog inputs, which is why I am connecting it to a mcp3008 an adc. The type I tried to make didn't give any real signal, so I am trying a hall effect sensor, but I am not sure on its range.
     
  6. Deltafee

    Thread Starter New Member

    May 22, 2015
    21
    0
  7. Deltafee

    Thread Starter New Member

    May 22, 2015
    21
    0
    I would like to try this circuit but the closest thing I was able to get was a http://www.farnell.com/datasheets/1924947.pdf?_ga=1.127058958.2085444920.1456966239, I set up the antenna on G which is the third legI believe, I set up the vcc on the middle leg and the led on the first leg all in reference to the front facing me. I will try combing my hair 5 feet from the antenna to see if it works, but is this the correct setup?
     
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