3d compass compass can't get it. What's going on here?

1. Electronic interference: There may be other electronic devices or magnetic fields that interfere with the normal operation of the 3D compass, resulting in the inability to obtain data. You can try to move the 3D compass to other locations, away from other electronic devices or places with strong magnetic fields, and get the data again.

2. Sensor failure: If the sensor of the three-dimensional compass fails, it will also lead to the inability to obtain data. You can try to restart the 3D compass or connect it to your computer for diagnosis and maintenance.

3. Software problem: If your 3D compass is connected to a mobile phone or other equipment, it may be because of software problems that you cannot obtain data. You can try to reinstall the application or update the software version.

4. Equipment damage: If your 3D compass falls or suffers other damage, it may also lead to data failure. Need replacement or repair.