Yes, the differnece between gyroonly and fusion mode is expected.
in gyroonly mode, the output is gyro raw data, then we just output what gyro detected
in fusion mode, we set threshold to detect a still position. if the output of raw gyro low than the threshold, the fusion lib will output as 0 and indicate that device is not moving. this is also combinated with other sensor output as fused output of gyro.
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