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Re: What's the difference between an X/Z and an X/Y 2-axis gyro?
You are absolutely correct that re-orienting one 2 axis gyro results in the equivalent measurements taken by the other gyro.
However, it is common to not have the option to reorient the sensor. For example, I was designing a 6 axis IMU - inertial measurement unit. Keeping it all "in plane" on one board was a requirement for both cost and accuracy. Having two boards aligned at 90 degrees with any precision is a real pain. For this reason, it is beneficial to have the option to "reorient" the gyro by ordering a different part number.
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