HEX here3 - Compass Configuration; Stable Firmware Compass Settings; Latest Firmware Compass Settings

NTF_LED_TYPES: 231
Click "Write Params" when done. CAN functions will be available after rebooting the flight
controller.
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Compass Setting（Using the current stable firmware copter4.0.3,plane4.0.5）:
When using Cube Black, the CAN GPS external compass is automatically set to compass 3,
and when using Cube Orange, the CAN GPS external compass is automatically set to
compass 2.
Safety switch is not available in Here3. Safety switch check can be disabled by changing
parameter "BRD_SAFETYENABLE" to 0. Connecting an external safety switch to GPS1
connector is also an alternative option.
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If you need to use the external CAN compass as the primary compass, Set the primary compass
to Compass2(CubeOrange) or Compass3(CubeBlack).
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Compass Setting（Using the latest version of firmware）：
At the time of writing this document, the firmware used for this section is ArduCopter Beta
4.0.4