Pypilote Opencpn compass conection doesn't work

[diyc235]

hmmm.. Pitch and roll are respective of gravity, how to you measure yaw rotation in respect to gravity? Would the compass heading be more useful? My test stand is sitting flat on a wooden stool and I can see that the compass heading change as I rotate the IMU.  Maybe if yaw was the compass angle then would not need the NMEA connection for heading.  

I agreed. The extra precision beyond a 1000th or even 100th of a degree in pitch or roll on a sailboat is meaningless, and just uses up bandwidth.

hmmm...
If Signal K could read serial NMEA, then it would not need to be fed from pypilot? I'll  try that...