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dji ZENMUSE X5 Manual
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dji ZENMUSE X5 Manual

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If you're interested in drones you will have no doubt seen all the spectacular crashes on YouTube and heard about
drones flying away by themselves. Drones like the DJI
Inspire 1
or
Phantom 3
are highly complex devices that rely on
various systems to perform properly. While there's no way to guarantee against a hardware or software problem
there are a few things you can do to minimise the chances of crashing. Here are my top tips that could save your DJI
drone.
1. Know when and when NOT to calibrate the compass
A lot of people recommend calibrating the drones compass each time it's flown at a different location. While this
seems to work for some I think it introduces unnecessary risk. Let me explain why...
When you perform a compass calibration you're letting your drone test its surroundings for magnetic force and once
the calibration is complete it stores that data and assumes that those forces are normal for the current location and
will be consistent throughout the flight. But what if there's a large electrical cable or metal pipework buried below the
paving you're standing on? If that were the case then the calibration you've just performed will have taken those
effects into account and the moment the drone takes off it will be flying with incorrect compass data.
Unless you've travelled a long way (hundreds of miles) since your last flight there's no real need to re-calibrate the
compass if you already have a good calibration locked in. If you find yourself in a nice open undeveloped area then
it's a good time to grab a clean compass calibration, otherwise why replace a clean calibration with one from an area
where you have no idea what unknown forces are at play.
2. Know when and when NOT to calibrate the IMU
An IMU calibration resets the gyroscope and accelerometer data to tell the aircraft when it's perfectly level and not
moving. I only do an IMU calibration after a firmware update or if I've travelled to another country and the drone could
have suffered knocks or large atmospheric changes.

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Summary of Contents for dji ZENMUSE X5

  • Page 1 While there’s no way to guarantee against a hardware or software problem there are a few things you can do to minimise the chances of crashing. Here are my top tips that could save your DJI drone.
  • Page 2 With the drone powered up and the DJI app running you can navigate to the MC Settings page and then scroll down and select the Sensors view that should look like the image below.
  • Page 3 I’ve highlighted the values you need to pay attention to in red. The compass data is the lower of these three Mod values. This number will always be changing but I like it to stay between 1400 & 1599. One good test is to leave this page open and then carry your drone around and watch how different objects affect this value.
  • Page 4 If there are any trees or other obstacles between the drone and its takeoff point it will fly straight in to them. Recently DJI have added an option to disable Smart Go-Home which can be seen in the image below.
  • Page 5 By disabling this option the drone will simply initiate a landing at its current location rather than head home once it reaches 10% power. As always though you need to make the call with each flight, as there could be times when it’s better to leave Smart Go-Home enabled.
  • Page 6 Any devices that transmit can have an effect on the communication between your drone and the remote controller. Most DJI systems use 2.4 Ghz as a control frequency, which is the same frequency used for domestic WiFi. While the two can exist side by side you will find that interference can occur and control distances decrease so where possible always switch mobile devices and especially tablets used on the remote in to an Airplane safe mode which disables all output from the device including bluetooth and telephone communication.
  • Page 7 7. Be careful with P-GPS, take control with ATTI mode The two main flight modes on a DJI drone are P-GPS and ATTI ( attitude mode). Using GPS to stabilise a drone is extremely useful, the drone stops and holds position where it’s told to and even helps you to fly in the right direction in windy conditions.
  • Page 8 I always think of ATTI mode as being like a pebble on a frozen pond: if you give it a push in one direction it will keep going, so in order to stop it you need to push it back in the opposite direction. Practise flying ATTI in the DJI simulator and then try it in an open field where you have room to make mistakes.
  • Page 9 If using self-tightening props always wind them on and then hold the motor for the final tighten. With the Inspire you to further reduce the risk of a prop working loose. If using DJI’s new can also fit prop locks quick release props or Matrice then it’s important to ensure that each prop has popped up into its locked in position.
  • Page 10 Start Motors: CSC command Home Point: Blue dot Location correct on map Initial Check: motor sound check Climb: climb to 2m Control Tests: Test all controls GPS & ATTI Test: Test both modes function correctly Landing Gear: Raise Gear and fly! 10.
  • Page 11 “So I started my flight at 80% battery and all was going fine then all of a sudden it dropped to 7%, WTF!” DJI responded to such comments saying that the intelligent batteries need to be fully charged at the start of each flight “as per the manual”...