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    Re: Another super-accurate AH candidate hiding in my pocket!
    From: Don Seltzer
    Date: 2014 May 6, 10:13 -0400
    The article simplifies the problem.  What they call 'bias error' is likely a combination of three factors - offset from zero, scale factor error, and physical misalignment of the axes of the accelerometer with that of the iPhone case.  The first two errors are also probably temperature dependent.

    Don Seltzer

    On Mon, May 5, 2014 at 10:56 PM, Norm Goldblatt <NoReply_Goldblatt@fer3.com> wrote:


    Here's an nice starter article about 5S problems with their accelerometer. It reveals manufacturers and some specs. Always wondered why a calibration step is left out of the set up procedures for apps which use this device.

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