Thread: What's the difference between an X/Z and an X/Y 2-axis gyro?
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Unread 18-01-2010, 12:47
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What's the difference between an X/Z and an X/Y 2-axis gyro?
Our team is thinking of using a 2-axis gyro from SparkFun on our robot this year. We are looking at the IXZ-500 X/Z gyro and the IDG-500 X/Y gyro. These two gyros seem to have essentially identical specs, except that the first measures the X (yaw) and Z (pitch) axes, and the second measures the X (yaw) and Y (roll) axes.

This is where I'm confused. If you take an X/Z 2-axis gyro, and rotate the breakout board by 90 degrees before you mount it on the robot, doesn't that make it an X/Y gyro, because now it is measuring sideways roll (Y axis) rather than front-to-back pitch (Z axis)? I know there is something I'm missing here. Any help appreciated!
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