Arduino EMF detector

Use an Arduino microcontroller to sense invisible electromagnetic fields using wire, a resistor, and an LED.

Aaron ALAI’s EMF detector project is awesomely simple to make and fun to use. An upgraded version can be built using an LED bargraph for more ‘meter-like’ functionality.

original project can be found here –
http://www.aaronalai.com/emf-detector

additional info, and Arduino sketch –
http://blog.makezine.com/archive/2009/05/making_the_arduino_emf_detector.html

audio/video by Collin Cunningham

Duration : 0:3:23



Posted

in

by

Comments

25 responses to “Arduino EMF detector”

  1. kctess5 Avatar
    kctess5

    super cool
    super cool

  2. drumid1881 Avatar
    drumid1881

    do not insert into …
    do not insert into wall outlet!

  3. soothillstott Avatar
    soothillstott

    Well,just like the …
    Well,just like the device in ‘Super Natural’ for detecting the devil….

  4. punisher17011990 Avatar
    punisher17011990

    @jonjon50088 …
    @jonjon50088 actually u could trick the physics and move the “antenna” along the dc wire…so i will get an induction…anyway…its really not the point of it

  5. Dark0Lord7 Avatar
    Dark0Lord7

    @station2station …
    @station2station But speakers use magnets, so they will cause interference.

  6. SCRTpilot Avatar
    SCRTpilot

    @jonjon50088
    But …

    @jonjon50088
    But you could still use it to detect wiring before drilling a hole in the wall.

  7. TD47 Avatar
    TD47

    Cool project and …
    Cool project and awesome chops!

  8. 666alberto Avatar
    666alberto

    Bellissimo! how …
    Bellissimo! how much?xD

  9. station2station Avatar
    station2station

    You should now add …
    You should now add a piezo speaker to output sounds similar to that on a PKE meter… heh you can walk around and pretend you are finding little voltage ghosts…

  10. beasterG11 Avatar
    beasterG11

    what kind of …
    what kind of baterry are you using to power the arduino

  11. detibry Avatar
    detibry

    you could also make …
    you could also make this with an op amp.

  12. mattx12345678 Avatar
    mattx12345678

    @ezman700 Thank you …
    @ezman700 Thank you. i have been looking around and found a good deal with the Duemilanove as i only want to make some simple projects to start with. thank you for your advice 🙂

  13. ezman700 Avatar
    ezman700

    @mattx12345678 The …
    @mattx12345678 The Uno has slightly more memory and it can also provide feedback to the computer, like if you were going to make a computer mouse. It’s a $5 difference between the two, so you might as well go with the Uno.

  14. gandulfo77 Avatar
    gandulfo77

    Sorry, but this is …
    Sorry, but this is NOT a electroMAGNETIC field detector.

  15. Dosayla4wd Avatar
    Dosayla4wd

    nerd
    nerd

  16. mattx12345678 Avatar
    mattx12345678

    What arduino board …
    What arduino board is best, The Arduino Duemilanove or The Arduino Uno? The website that i went to said that the Uno is a replacement for the Arduino Duemilanove. They both cost the same so which do you think i should get?

  17. yodathepimp2 Avatar
    yodathepimp2

    I think I should …
    I think I should get an arduino some time.

  18. juicebab Avatar
    juicebab

    If I’m not mistaken …
    If I’m not mistaken, I think this one detects electrostatic charge. You can probably achieve same results with a FET, an LED and a battery.

  19. AWdrius Avatar
    AWdrius

    Very cool project.
    Very cool project.

  20. shorishel Avatar
    shorishel

    once u uploaded the …
    once u uploaded the code on the Arduino, can u disconect it from the USB and still work ? what about a power supply ?

  21. theyearofourlordig88 Avatar
    theyearofourlordig88

    I USE THIS EMF …
    I USE THIS EMF DETECTOR…WHY? BECAUSE ITS…

    UNBELIEVABLE….OHHHHHHHHHHHHHHHHH

  22. lukeskywalkerlol Avatar
    lukeskywalkerlol

    ultranerd get a life
    ultranerd get a life

  23. Matjesbroetchen Avatar
    Matjesbroetchen

    nerd
    nerd

  24. stowsux Avatar
    stowsux

    Good work. Just out …
    Good work. Just out of curiosity, how could one convert this to real-world values? (Perhaps Gauss units?)

  25. mariovalencia123 Avatar
    mariovalencia123

    kipkay?
    kipkay?

Leave a Reply