Heading estimate True or Magnetic North

I am using the Tinker forge IMU Brick V2 for heading correction. The output is magnetic north.
Agopen is also getting heading from fix to fix or maybe from a gps message and I imagine tht this is true North.
Goes the AgOpen software deal with the difference and does it output true North

AOG isn’t bothered which way it points as long as it’s relatively stable. It is only used to stabilise the GPS heading.

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