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Alignment
Make sure Zubax GNSS and PX4 the autopilot are aligned (use arrow markings) as shown below.
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To check the number of barometers on board. Open the tab FLIGHT DATA then select tab Status. It will appear that two barometers are detected. One barometer is on PX4 the autopilot and other is on the GNSS module.
To set other barometer as the primary one. Change the parameter GND_PRIMARY to 1.
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