Without the unlock license authorization from DJI, is my compass compromised in order to prevent liftoff? So perhaps what is preventing my MP from spinning like a top on attempted liftoff is simply DJI compromising my compass ? This is deep ....
compass problemo connected to the unlocking license bone?
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The compass function and DJI unlocking license are not related or interconnected.
Perhaps you could explain what you are asking about a little more clearly?
The compass is only concerned with issues of direction and has nothing to do with unlocking authorisation.
DJI have no control over your compass, it only responds to your local magnetic environment.
What prevents your drone from spinning like a top is that two props rotate clockwise and two are anti-clockwise to balance the torque.
thank you, for such a timely response to my cryptic feeler! My mavic spins on liftoff bcause of a compass irregularity then. So if I move to a different geographical location, I should be able to liftoff if there is no magnetic interference. Would there remain the unlockig license requirement, however, in Class G airspace, for example?
It's easier to give a straight reply to a straight question.
How about dropping the cryptic stuff and just plainly and clearly describe your problem is and what your questions are.
Thank you, for such a definitive and timely response to my cryptic "feeler." After more than a dozen attempts to become airborne, it appears to me now to clearly be a compass electromagnetic interference issue. This very day I shall move location to Class G airspace, wherever that is, and then there will be no need to seek an unlocking permission from DJI? This unlocking business is a new conundrum for me, and it has majorly complicated my attempts to achieve my maiden succsssful flight. Your input is very much appreciated!
I see that unlocking is not permitted in my present location. It follows then, that moving to an unrestricted area may be my option at this time.
My aircraft compass calibration only gives a positive green flight status indication light upon vertical-nose-to-ground 360 degree rotation preflight. The 360 degree horizontal rotation during preflight compass calibration displays only--without exception--a solid yellow flight status indicator light. This is the foundational problem I encounter, which ultimately results in the mavic's spinning like a top. I am seeking solely at this point in my education as a dronster a perfect hover. Hope this foregoing is explicit.
the map view should clue you into why you're prompted to unlock flight authorization. Red location, completely prohibited unless you submit documentation to DJI's Fly Safe website.
Blue can be unlocked but is tricky. You'll need to "authenticate" yourself by providing a mobile number they can text you, or a CC.
Yellow zone you may need to authenticate or not, but you need to agree to terms by checking the three check boxes. Those can be hard to see.
I never understood about authentication on demand by any mobile number but I just now figured they have something to provide authorities if needed.
Blue can be unlocked but is tricky. You'll need to "authenticate" yourself by providing a mobile number they can text you, or a CC.
Yellow zone you may need to authenticate or not, but you need to agree to terms by checking the three check boxes. Those can be hard to see.
I never understood about authentication on demand by any mobile number but I just now figured they have something to provide authorities if needed.
Thanks, DanMan, for your reply. Yesterday was my first attempt at compass calibration at a location other than my home base. My problems continue. The map I used in the DJI Go4 app showed a couple red pins; how far I was from these markers I'm unsure. Eventually I am confident these stumbling blocks will be overcome by patience and focus. Thanks again!
I appreciate, very much, your guidance!
My compass calibration exercise is as follows:
I set up the big three so they're all talking to each other; to-wit: controller is connected to iPhone 6. The mavic is activated and so is the app on the phone. I have satellites, I have the "ready to go," displayed on the controller, and all is right with the world.
After finding the compass menu that allows me to calibrate, the choice is made by me to calibrate. Then up pops the graphical depiction of the mavic in the horizontal position on my iphone--in the app--and I hold the aircraft over an imaginary spot and, at shoulder height, walk a 360-degree circle around the imaginary spot. I've never gotten the green flight status light on the aircraft at this point; not ever. YELLOW is what is presented to me both before and after this horizontal 360-degree circle routine.
So when I next point the nose of the aircraft toward the ground and walk that 360-degree circle around the imaginary spot--axis--on the ground, once around and the flight status indicator light gives me GREEN.
When I restart the aircraft and then proceed to lift off, the aircraft won't hover; instead it yaws and rolls. I understand the opposing forces of the sets of props. The props are attached correctly.
Yesterday I drove north to what seemed to be a secluded location and did the compass calibration in this new locale; same result: yellow flight status light before and after horizontal circle; green light after vertical nose-to-ground 360-degree circle.
Maybe on the horizontal I should have the camera pointed at me? I believe I've always held the aircraft with the camera pointing away from me.
Anyway, that's what's giving me sleepless nights.
Thanx
jtnard on july 22, 2019 described the exact same situation as I'm experiencing. I'm lookinng now for jtnard to see if his concerns have been addressed and/or resolved.
What's the reason you are trying to recalibrate the compass?
Is the Mavic asking for it?
BC it asked me to. BC youtube says it's wise before each flight to calibrate. BC months pass between attempts to be successful--that's by the book-- BC I changed locations. BC I avoided compass calibration BC the v.1 and v.2 user manuals suggest not to compass calibrate until prompted by the app. I did the IMU calibration twice BC it asked for it. Thought if the manuals said two green lights following east-west/north-south, respectively, maybe it would be a prudent act to look for and receive two green lights, respectively.
In sensors submenu under IMU/Compass, the Compass interference numbers are Compass 1 upwards to 130 and beyond for interference, and yet compass 2 interference figure is 9 or less. Thought that might be a compass issue solvable by compass calibration.
Perused v.1 and v.2 Mavic Pro user manuals several times ea. Watched youtube experts ad nauseum tell me I need green lights and to "calibrate compass."
Didn't unbox this unit yesterday; my new "hobby" began in late winter 2017 with the purchase of a new-in-the-box aircraft and the full Fly More package on Ebay: multiple batteries, shoulder bag, and all the rest of it. Fly More, that's a good one. Two and a half years of angst.
jtnard on mavic pilots, this July 2019, recounts the identical issue; show me two consecutive flight status indicator lights green, one after horizontal--by the book, capt--followed by blinking green after nose-to-ground 360-degree rotation at shoulder height.
At least I'm beginning to see why electrical engineering is appealing
--
Thanks for listening.
In sensors submenu under IMU/Compass, the Compass interference numbers are Compass 1 upwards to 130 and beyond for interference, and yet compass 2 interference figure is 9 or less. Thought that might be a compass issue solvable by compass calibration.
Perused v.1 and v.2 Mavic Pro user manuals several times ea. Watched youtube experts ad nauseum tell me I need green lights and to "calibrate compass."
Didn't unbox this unit yesterday; my new "hobby" began in late winter 2017 with the purchase of a new-in-the-box aircraft and the full Fly More package on Ebay: multiple batteries, shoulder bag, and all the rest of it. Fly More, that's a good one. Two and a half years of angst.
jtnard on mavic pilots, this July 2019, recounts the identical issue; show me two consecutive flight status indicator lights green, one after horizontal--by the book, capt--followed by blinking green after nose-to-ground 360-degree rotation at shoulder height.
At least I'm beginning to see why electrical engineering is appealing
--
Thanks for listening.
Half of what you'll find on Youtube is wrong.
The problemis knowing which half.
If the compass is calibrated properly, there's no need to recalibrate before flights or after changing locations.
BC it asked me to. BC youtube says it's wise before each flight to calibrate. BC months pass between attempts to be successful--that's by the book-- BC I changed locations. BC I avoided compass calibration BC the v.1 and v.2 user manuals suggest not to compass calibrate until prompted by the app. I did the IMU calibration twice BC it asked for it. Thought if the manuals said two green lights following east-west/north-south, respectively, maybe it would be a prudent act to look for and receive two green lights, respectively.
In sensors submenu under IMU/Compass, the Compass interference numbers are Compass 1 upwards to 130 and beyond for interference, and yet compass 2 interference figure is 9 or less. Thought that might be a compass issue solvable by compass calibration.
Perused v.1 and v.2 Mavic Pro user manuals several times ea. Watched youtube experts ad nauseum tell me I need green lights and to "calibrate compass."
Didn't unbox this unit yesterday; my new "hobby" began in late winter 2017 with the purchase of a new-in-the-box aircraft and the full Fly More package on Ebay: multiple batteries, shoulder bag, and all the rest of it. Fly More, that's a good one. Two and a half years of angst.
jtnard on mavic pilots, this July 2019, recounts the identical issue; show me two consecutive flight status indicator lights green, one after horizontal--by the book, capt--followed by blinking green after nose-to-ground 360-degree rotation at shoulder height.
At least I'm beginning to see why electrical engineering is appealing
--
Thanks for listening.
If compass 1 is consistently showing high interference values, even after calibration, while compass 2 is low, then you may have some magnetization of compass 1 or nearby ferromagnetic components, such as screws. You might want to try demagnetizing that part of the aircraft.
Consider a degaussing. I have the CFixer.
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