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    The BMA456 statically measures the inclination

    jhhead
    New Poster

    The BMA456 statically measures the inclination

    The BMA456 statically measures the inclination, and the IC is placed vertically on the ground. When the xy plane is not perpendicular to the ground, the influence of the z-axis offset on the x and y outputs is inconsistent, resulting in large errors even if the atan2(y,x) calculation is used, even after 6 point calibration also doesn't get rid of it, can anyone help me?

    1 REPLY 1
    FAE_CA1
    Community Moderator

    Re: The BMA456 statically measures the inclination

    Hi,

    Thanks for your inquiry.

    When BMA456 xy plane is vertically placed on the ground, you can define X/Y/Z body axes of your PCB or your device casing. Then you can use BMA456 axis-remap feature to set BMA456 x/y/z axes to match body X/Y/Z axes with sign. Then you can calibrate BMA456 at 6 positions and calculate tilt angles with respect to body X/Y/Z axes. The API code for BMA456 axis remapping can be found online at https://github.com/boschsensortec/BMA456-Sensor-API/tree/master/bma456w_examples/axis_remap.

    Please send a private message to me with your location and email address. We can find a local FAE to support you further if you want.

    Thanks.

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