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February 17th, 2010

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  1. Martin Grossman
    September 30th, 2010 at 11:43 | #1

    I found out about your app from my brother that has both an itouch and
    an iphone. I’m writing an app that does the same thing for my Android phone. I have it getting the acceleration (in meters per second squared)
    for all 3 axis (x,y,z) and it has a timestamp (releative since bootup)
    in nanoseconds. I can choose to have these events either 10,20, or 50
    times per second. A friend is helping but its been a month now, and I
    still can’t convert from acceleration to distance traveled. I’ve checked
    and rechecked my math and I’m doing something wrong (I’ve verified is not
    a problem with the phone since I’ve tried it on other phones, and an excel graph of acceleration .vs. time looks fine). My math must be
    wrong since even in the excel spreadsheet converting accel to velocity
    and then to distance looks bad. Can you give a hand? PS its in java.

  2. Clark
    June 25th, 2012 at 01:45 | #2

    Can you please tell me what engineering units I need to apply to your Accelerometer Data Logger application currently on the App Store? Are your acceleration readings measuring m/s^2 or ft/s^2…or something else?