[CalebModerator]

It works, but the serial interface doesn’t know that you just changed the baud rate, so it listens at the old baud rate. Disconnect and then reconnect at the new baud rate to see the change.

[CalebModerator]

In the Configuration tab of the Serial Interface, click “Show advanced settings.” The EKF parameters are under “Sensor Variance Settings” and “Filter Q Settings.”

[CalebModerator]

On the GP9, angle outputs can wander as gyro biases changes over temperature (this happens less with units that are calibrated over temperature). The built-in gyro bias estimator compensates for those changing biases, so that the angle estimates are stable over time.

In order for gyro bias compensation to work, you need either
1) a good stable GPS lock, or
2) no GPS, but with accelerometer updates enabled.

It’s worth noting as well that the GP9 performs best when it is moving outside with GPS lock, not when it is sitting still indoors on a table.

[CalebModerator]

Under what conditions are you seeing the error flags asserted? The failure indicators are asserted when the UM7 is unable to read data from the onboard sensors. That shouldn’t happen under normal conditions, and if it is repetitive, it could indicate that the hardware is damaged.

[CalebModerator]

Hi Adrian,

It sounds like the filter is crashing during motion. This tends to happen around +/- 90 degrees. You can prevent the filter from crashing by putting it in quaternion mode.

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