[PD] Set reference with "flock of birds"

[Michael Gschiel]

I work with the "flock of birds" and I want to set a reference value. Did anyone now how to do this?

I mean, if the FoB send for example 30°, I want to have a button to say, this ist my reference value and then this value is subtract from the new value that I get from the FoB.

Thanks for helping me!

Michael
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