Another possibility is related to the IMU heater. At power on the IMU temperature is raised from ambient until it reaches 65 C. I suspect that during the ramp up a correction has to be applied to the barometric pressure sensor. The error occurs during the ramp up but once it reaches 65C no correction is required. Subsequent flights or batteries don’t show the error because they operate on an IMU that has already warmed up.Hi guys, I know this is not the first thread on altitude issues with Mavic 2, but as far as I know, this one is a bit different. I have owned the Mavic 2 Enterprise Advanced for a little over 7 months. The first time I noticed the problem was approximately a month ago. The bird takes off without any issues. I fly it to 15-20 meter (45-60 ft) height and then it starts losing altitude. Slowly, but surely. It is fully controllable, so I am able to either land it, fly it higher or do anything else. Today I flew it to 15 meters (45 ft) and waited to see what happens. The drone actually slowly came down to 1 meter (3 ft). I then took control and landed.
A few points:
- The problem first occured in December and still persists. This makes me think it may have something to do with the battery warming up
- The issue happens at the begnning of the flight, afterwards the drone behaves normally. After swapping the battery, the problem is back
- When the drone loses altitude, the altitude reading is not working properly. Say I take it 20 meters up and then it loses 10 meters. I would bring it 10 meters higher (back to 20) and the altitude displayed is 30 meters (give or take)
- So far I did not have the guts to try this in the mapping mode
Is this a normal feature and is this simply because I am impatient and take off immedtaley after starting up/swapping the battery? Would waiting after the start-up help?
Have you tried recalibrating the IMU? Start the recalibration when the M2 is as cold as you can get it.