JtrJr-Droner
Second Officer
Flight distance : 4341 ft
United States
Offline
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Abh,
Hi again! You can't get a break can you? Everything that I am going to tell you is based on my opinions and experiences. It may not be the way that DJI or anyone else chooses to do it. That being said, I would probably do the Advanced IMU Calibration as well. A couple of things you need to know. A lot of people have had issues with the advanced calibration. Some people have had issues with the 3.14 firmware as well. I stayed on firmware version 3.12 and have not had any issues. I did have issues with the advanced IMU calibration the first time or two that I did it. However, I now do it a very specific way and I have had no issues since I started doing it in this fashion. Make sure you have a very level surface to put the bird on. A surface with no metals or magnetic fields around it. Make sure it's not by other electronics gear such as TV's and speakers, etc. I use a solid wood table in my dining room, away from everything. I keep everything completely still. No walking around, nobody else moving around, no bangs or bumps. I do it when no one else is even around just to be extra careful. I place the bird on my table, with the props off. I then place a piece of glass from a picture frame (the glass only, not the frame) on top of the 4 motor posts. So the glass is now spanning across all 4 motors. I then take a level (non-magnetic) and I place it on the glass to make sure my motors are level with the earth. I use business cards to place under the legs of my Phantom to shim it until the glass is level in all directions. I do not power on the bird until I have everything else in place and ready to go. I get my laptop and my assistant software setup and on the calibration screen. I then plug the bird into the computer. I recheck everything and make sure the glass is completely level. I remove the glass and level and power up the bird. I then immediately start the advanced IMU process. If I recollect properly, a green percentage bar will start as the calibration progresses. If you get the MC temperature warning just bypass it (it's a known bug). I watch the whole process until it competes. I believe that a check mark appears once it's completed but I'm not entirely sure. You'll know it's complete because you'll be able to use the buttons again. After it has completed, I exit the assistant software and power down the bird. I pull the battery and let the bird and battery cool down for a while. I then reinsert the battery, power up the bird, go to the calibration page in the assistant software and select the check calibration button again. If everything worked and all looks good I exit the assistant software and open the RC assistant software. I do the controller calibrations and exit the RC software. I go back in to the assistant software and redo all the RC calibrations in there as well. Once done with all of that I take the bird outside, do a compass calibration and carefully test it. I keep the bird fairly close to the ground and observe how it hovers. If it hovers steady for a bit, I'll start moving it around and continue with testing various things. If it does not hover steadily, I immediately land the bird, shut everything down and I repeat the entire calibration process again from start to finish, trying to ensure that everything is completely level and that there is no movement while the advanced IMU calibration is underway.
So sorry if I'm over doing things but I wanted to try to be very specific. There are many threads on doing the Advanced IMU calibration on this forum. You may want to read some of them before you do it the way I just described. I doubt that a lot of people do it in the fashion that I do but it has worked very well for me. I hope I didn't leave anything out. I also hope that you get successful results and you can start enjoying your Phantom. You certainly deserve to have a more positive experience than you have had so far! Good luck!
Jerry
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