Yes, please always do your compass calibrations out of doors, away from any electrical or ferrous (magnetic) metal objects.
You seem to have misunderstood the compass calibration purpose and what it actually does.
The onboard compass has one purpose, knowing which direction is North. That pretty much is it.
Once you do a proper compass calibration, it's good for a very long time.
Yeah, the only time I have done mine over is after firmware has been updated, or when a newer version of the Go app was installed.
Unless you travel, over 100 miles to a new location to fly, leave the comass alone. Do check the values and make sure they are around 1500. That's about it. Definately always and only do your compass calibrations while in P-GPS flying mod, and outside confines of four walls and ceiling.
Horse shoe in your back pocket? If you calibrated your compass in that building, in ATTI Mode, you are fortunate that it only bobbed and weaved some. By rights you could have been picking up the shattered and broken pieces.
Please go back and do RTFM, perhaps a couple of times. This is mot a toy, and you should have a complete-basic understanding of this hobby grade model, well before you fly it.
After I attended a
@dji First Pilot Experience, I ordered my Phantom 3 Pro, that very same day. During the 8-9 wk wait, I studied those PDF manuals and felt like I already had my drone in my possession.
Surely there are things that I need to refresh up on, and stay quite constant. The manuals have been updated a few times, and I always reload the latest version and delete the old ones.
It is our responsibity to fly these drones in as safe and efficient of manner as we can. That takes knowledge and flying practice.
Many pilots have gone out of their way, to be trouble to the hobby, so new regulations are being written as we speak.
RedHotPoker