"After some research & testing I have found the answer:
1) Request (send to Arducopter) the stream MAV_DATA_STREAM_RAW_SENSORS.
2) Read (from Arducopter) the message MAVLINK_MSG_ID_VFR_HUD.
3) Use the MAVLink function mavlink_msg_vfr_hud_get_alt() to…"
Hi everybody, I am Luis from Spain, I am building my own GCS and I would like to know which is the MAVLink stream I have to request to get the sonar altitude, or in case it is not given as a stream, I would like to know which message do I have to…