Arduino to Android communication on the cheap (aka Poor Man’s NFC)

This video demonstrates a means of low cost (less than 20c) and low bandwidth (less than 10bps) communications between an Arduino and an Android cellphone. See this blog post for details:
http://jdesbonnet.blogspot.com/2011/05/arduino-to-android-io-on-cheap-aka-poor.html

Duration : 0:0:37


[youtube FBT4h7RW0wA]

19 thoughts on “Arduino to Android communication on the cheap (aka Poor Man’s NFC)

  1. I bet it can do …
    I bet it can do something simmilar, most phones seem? to be able to.

  2. if a phone would …
    if a phone would have a electrostatic sensor? like the epic (Electric Potential Integrated Circuit) sensor, thing would get alot funnier!

  3. @sircastor1138 but …
    @sircastor1138 but software won’t let you do it.?

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  5. Or welcome to a …
    Or welcome to a cold night outside when the phone runs out of battery, gets stolen or damaged :P?

  6. make a door lock …
    make a door lock that changes its access code randomly every hour. when you’re outside you touch your phone to the door. the coil sends the current unlock code encrypted with? a shared secret between the arduino and your android phone. the phone receives and decrypts the code that you can then enter into a keypad. welcome home πŸ™‚

  7. It? can be used as …
    It? can be used as QRCodes, to transfer URL information to the phone. May be with larger coils and more electromagnetic amplitude, you can just touch something with your phone and get info about it.

  8. Yes:? one way from …
    Yes:? one way from coil to phone unfortunately. It’s not very practical, but I can’t help thinking that there may be *some* practical application for this… I just can’t think of it πŸ™‚

  9. @Feliexxxxxxxx …
    @Feliexxxxxxxx Ironically, the iPhone probably can do this. Instead of utilizing NFC dedicated tech, this solution utilizes the phone’s compass (magnetometer) to detect changes in electric fields – While the iPhone doesn’t have NFC capability, I don’t think it? would have trouble pulling off this kind of communication. Props to @jdesbonnet for the technique!

  10. mad you keep up the …
    mad you keep up the good work , and also you maybe able to make app for your android phone now by using? app inventor thanks

    ian

  11. Well people in …
    Well people in conventions could easily get information by putting their android device? near places with this mechanism and get their information easily

  12. exactly iphone cant …
    exactly iphone cant do? anything compared to android

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