Anomalies when running "Measuring and validating the robot dimensions" test with use_gyro enabled and disabled.

[bcfletcher]

we have been with playing variations on the "Measuring and validating the robot dimensions" section in the Pybricks documentation have noticed substantially different values are required for axle_track depending on if use_gyro is enabled or disabled for the turn tests.

our question is should use_gyro be set to True when running the tests?

[laurensvalk]

When testing wheel rotations of the motors, it's best to turn off external influences like the gyro.

Otherwise, it will try to use the gyro to compensate even if your wheel estimates are way off.

You'll get the best results if you get the wheel and axle track settings right first, and then turn on the gyro. We're also working on a separate gyro calibration routine.

[bcfletcher]

thanks. that is what I thought. I might be a good idea to mention that in the measuring section and validating robot dimensions section of the manual.