Hi, I want to add an indicator of the cardinal points, a compass.
From arduino I can send that information. But how can I add that entry in the Realdash?

RealDash already has a GPS based heading value, could you use that? You can make a compass with needle gauge.

This interests me as well, as a needle compass would need the ability to turn all around the clock. As asked in my previous post:

"for example, is that when going from value 350 to 10, the needle should go the nearest way, not all the way “back” to 10, but rather overflow and go past 360 to 10. "

Is this possible with RealDash?

Try setting the smoothing of the gauge to 0 to avoid going back the wrong way.