Hi
does the latest versjon of ardusub support second compass ?
Hi @balder,
I’m not sure on this one, so have asked internally 
We’re on a company-wide break from today until 2/Jan, so you likely won’t get a response until after then.
@balder, following up on this, I’m told a second compass has been supported for quite a while, so should be available. If you use one it needs to be supported in ArduPilot, but beyond that it should hopefully be reasonably straightforward