As orders for the Mavic are being delivered I have put together some tips and information for people so when you receive you new craft you know exactly what needs to be done
Important Note: Before turning on the aircraft always make sure you have removed the gimbal clamp and it’s free to move around unobstructed.
1: Firmware and App
Download the latest version of DJI Go to your smart device, you need DJI Go V3.0 onwards to support the Mavic.
The Mavic will be shipped with firmware already installed but this may not be the latest, Its highly recomended that you update your craft before you fly, read the DJI update release notes and understand what the update should do and how to perform it before starting.
The Mavic firmware update is performed via the Go App or DJI Assistant 2 on PC or Mac, the Go App is done wirelessly and you will update both the craft and Remote controller this way, DJI have produced a video showing this process and I have link it on my blog page for the Mavic here
If you have additional batteries you may need to update these as well before you fly, to do this just turn the craft on with each battery in and it will go through the update process again for that battery if required.
2: IMU Calibration
The Mavic’s IMU has been pre calibrated by DJI at the factory and you should not need to recalibrate out the box unless prompted to by the Go app, DJI Dr Turbo states
The IMU was calibrated carefully in the factory under controlled environment so you do not need to warm up the IMU before each take off. Once you calibrate your mavic at home, you lost such features
The calibration process has changed on the Mavic compared to the previous DJI models and is now done by rotating the aircraft through 5 axis while following the on screen prompts, If you do need to calibrate I would still advice doing this on a perfectly level surface as well as making sure the aircraft is a cold as possible, this help reduce warmup times at the start so make sure the Mavic has been turned off for a period of time, I personally let it chill on the patio for 20 minutes in the evening as this should be enough to ensure you don’t get excessive warm up times.
DJI have released a video showing how to perform this, Again this is listed on my blog above.
Once that’s done perform a gimbal calibration on the same level surface.
4: Remote Controller Calibration
Set your desired stick mode and calibrate the remote controller sticks and buttons to make sure they perform as they should and endpoint as set.
5: Vision System – Object Avoidance & VPS
The Vision systems come pre calibrated from the factory and you should not need to do anything with this out the box, however if you get an error you can perform a quick calibration in the field but its recommended to perform a full vision system calibration via the DJI Assistant 2 Application.
1: Read all the DJI Mavic manuals a few times as there is a huge amount of info in them and its easy to miss something important, i actually advise printing the manual out and having a copy with you, you need to fully understand the flight modes and how the craft behaves in RTH especially with object avoidance, this can make the difference a safe return or a lost craft should the unforeseen happen and you run into trouble.
2: You need to calibrate the compass before your first flight, make sure you do this in a wide open space well away from anything that may contain metal such as reinforced concrete, also make sure there is no metal on your person, Apple Watch and other personal smart devices can have a massive affect on the crafts compass so when you calibrate or handle the craft keep these devices well away.
You do not need to calibrate the compass before every flight, once a successful calibration is done you only need to calibrate again if you travel over 100+ miles or the app prompts you, more on this below. After calibrating the compass I would advise to check the RTH height setting in the go app, make sure its set heigh enough to clear any building or trees, while object avoidance its active in RTH in P-GPS do not rely on this and always set RTH heights accordingly.
Understand what the aircraft is telling you and NEVER ignore any errors, IMU, compass or battery errors can be serious, if it happens on the ground before you take off stop, reboot everything and try again, If you receive a compass error at a new location that’s not that far <50 miles from the last location you calibrated it make sure the area is clear of metal, underground structures or cables, if your taking off from concrete it’s possible it’s reinforced and this is interfering with the compass, try moving to an new location +40m away and try again before you recalibrate.
Compass errors specifically – Apple Watch and other personal smart devices can have a massive affect on the crafts compass so when you calibrate or handle the craft keep these well away and off your person.
Take it Slow
Take it easy for your first few flights until you understand what the craft is doing and how it behaves vs how you expect it to behave as these can be very different, avoid flying over water or tight spaces and give your self plenty of open space to check the craft is working correctly and you understand its controls and the onscreen data.
IMPORTANT NOTE: Object Avoidance and VPS are not active in Sport Mode and as such make sure you set RTH height accordingly to avoid any building or trees, your aircraft will not stop or avoid objects in Sport mode.
IMPORTANT NOTE 2: CSC has changed compared to the Phantom 3 and Inspire 1 so familiarised your self with this new method.
The DJI smart battery contains builtin charge and balancing circuit, it is also capable of self discharging if left fully charge to storage level below 65%, this can be set in DJI Go to start between 1 and 10 days after charging, Setting this to 3 days is a good mid point.
Take it easy on any brand new batteries, they can take a number of cycles to realise full capacity and flight time and try not to fully discharge a new pack for the first few cycles, ideally don’t discharge a new pack below 50% for the first 10 cycles.
Try not to fly a partly charged pack and only take off with a fully charged battery when ever you can, if you stop flying do not use the pack again for another flight, further to this only fly a fresh fully charged battery so fly with in 24 hours of charging the battery, if the battery has been sitting for over 24 hours discharge it to below 90% then charge it fully before you fly.
In closer weather keep a charged battery warm before flight, cold weather can have an averse affect on the battery and its performance so try to keep the pack warm between charging and getting to the fly site, battery temp should ideally be between 20-30c for take off,you may not be able to arm the motors if its below 15c, if between 15-20c take off and just hover for a bit for the pack temperature to rise above 20c, this can be checked in the battery information scree in DJI Go.
My DJI Mavic Info Blog is located here on RCG
The tips and the information above is a collective of information taken from years of use by users and DJI support reps on various forums.