This thread caught my interest, so I decided to try a little experimentation. I took the quad outside and set up everything as if I were going to fly. I calibrated the compass and then set the drone down facing north. I took the transmitter and stood behind the quad also facing north. The transmitter icon faced up (north) and the map (locked) also faced north. The icon at the top (inside the battery circle) just rotated slowly around. I unlocked the map and saw that it was also rotating slowly around. I am guessing that the top icon is tied to the accuracy of the tablets internal compass. On my tablet, it does not seem to be all that accurate. Then I relocked the map screen and moved clockwise around the quad until the transmitter was facing east. The icon on the transmitter did not move and still pointed straight up the same as when I was standing behind it. The map icon also had not changed. Still pointed north. The icon on top of the screen was continuing to slowly rotate. I then rotated the quad around to the east. (transmitter and quad both same direction) The transmitter icon was now pointing to the right. The map icon had also turned to the right and showed the quad pointing east.
The best I can figure is that the transmitter icon and the map icon will show the compass direction of the quad regardless of it's relation to the transmitter. I have no idea what the icon in the little circle is telling me. I also find that for me at least. unlocking the map compass is no help. Just seems to be too confusing. I will continue to play with this but for now I believe the best way to know what the quad is doing is the map screen and to always know which way north, south, east, and west is. Thanks
johnf