IMU + magnetometer orientation. Is y in the orientation supposed to be 0 when facing north?
So I'm using the UM7 IMU which comes with a magnetometer. It produces a imu message on the imu/data topic. The IMU produces data in NED format but the driver transforms it to ENU and publishes the orientation as a quaternion.
Am I correct that when reading the topic, the y value of the quaternion should read (around) 0 when it's pointing to north?