I am currently trying to process the BlueROV2’s data flash logs in a proper way. I use QGroundControl as ground station and thanks to mavlogdump.py, logs can be put in .csv format.
The problem is there are many messages I don’t get (FMT, PARM, IMU, IMU2, NKF1, …) and this link Downloading and Analyzing Data Logs in Mission Planner — Dev documentation explicits a few of them.
I’d like to keep only the useful recorded data (velocities, accelerations, pitches, rolls, battery info, etc…) but I can’t manage to find a documentation which lists all of these.
My question is What to keep? What to delete?
I saw there were “IMU” and “IMU2” for example, this means there are several IMU in the BlueROV2 ? Where are they ?
Some parameters won’t show any information, for example “BAR2” without any description of what it is
There are several parameters in which I can find Roll, Pitch, Yaw but which one is trustworthy ?
The timestamp in the log is said to be in microseconds following the unix epoch, I was wondering, why is this time reference chosen ? (Simple curiosity)
My apologies for any poor phrasing, I am still a student and new to this field