What's In The Headphone Jack? Oscilloscope App

Discussion in 'Nexus 7 (2nd Gen)' started by Music, Feb 15, 2017.

  1. Music

    Music Senior Member

    Feb 5, 2011
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    Northcoast, OH
    Tablet / Device:
    Google Nexus 7-13, 32 Gb
    I have been getting interested in using my tablet as a portable oscilloscope, for working on older cars and electronic hobby stuff, plus my new 10-inch Insignia would be useful. While researching oscilloscope boards for Android tablets, I noticed there were some home-made probe thingies that connect through the headphone jack.

    The problem is that the home-made probe uses a 4-pole headset plug to input the signal as a kind of audio signal, and it made me wonder what kind of hack the Nexus 7 2013 has. I think it's a standard 1/8-inch stereo headphone jack, but it could be for a headset, as my phone headset has a 2.3mm plug, not the standard 1/8 or 3.2mm, and I can't try it.

    In any case, has anyone used an oscilloscope adapter board for Android that works?

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