[DonRotolo]

Remember that this is a Yaw Rate Gyro, key word being Rate. This gives an output in degrees per second, so in other words it measures how FAST the sensor is being turned - NOT how much it has turned.

If you multiply the rate times time, then you get amount of turn. But, how you do that multiplication can introduce errors if the rate is not exactly constant. That could be the source of your error, perhaps.

Try to eliminate that source of error by turning at as constant a rate as possible, and not very slowly - about 90 degrees per second is probably a good rate.

EDIT: Make sure you're turning the gyro about it's real axis, which is not the axis of the PC Board!

Don