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5.2.1
Acceleration calibration
The addition calibration is used to remove the zero offset of the accelerometer. The sensor
will have different degrees of zero offset error at the factory, and the measurement will be
accurate after manual calibration.
1. To add calibration, the method is as follows: Firstly, keep the module horizontally
stationary, click to add calibration, after 1~2 seconds, the three axial values of the module
acceleration will be around 0 0 1 and the X and Y axis angles will be around 0°. After
calibration, the X Y-axis angle is accurate.
5.2.2
Magnetic Calibration
Magnetic field calibration is used to remove the magnetic field sensor's zero offset. Usually,
the magnetic field sensor will have a large zero error when it is manufactured. If it is not
calibrated, it will bring about a large measurement error and affect the accuracy of the Z-axis
angle measurement of the heading angle.
Calibration methods as follow:
1. When calibrating, first connect the module and the computer, and place the module in a
place far away from the disturbing magnetic field (ie, more than 20 CM away from magnets and
iron, etc.), and then open the upper computer software.
2. Click the
“
Magnetic Field Calibration
”
and rotate 360
°
around the X axis of the module
( you can rotate around the Y axis or the Z axis first). Rotate a few turns, then turn 360
°
around
