The Inertial Measurement Unit (IMU) is a critical sensor that measures your aircraft's acceleration, rotation and orientation. Calibrating the IMU helps the aircraft accurately process flight data, which is essential for stable and safe flight.
When to calibrate
You should calibrate the IMU in the following scenarios:
After traveling to a new flight location.
Following a firmware update.
If the app prompts you with an IMU error or "IMU Calibration Required."
If the aircraft feels unstable or drifts during flight.
How to calibrate the IMU
Follow these steps to complete the calibration process. Ensure your aircraft battery is at least 50% charged before starting.
Find a flat and stable surface. Place your aircraft on a level surface. Do not move the aircraft or the surface during calibration.
Open the DJI Fly app. Power on your remote controller and aircraft, then open the DJI Fly app on your mobile device.
Navigate to Safety settings. Tap the three dots in the top right corner of the screen to open the main menu. Select the Safety tab.
Select IMU Calibration. Scroll down to the Sensors section and tap IMU Calibration.
Follow the on-screen prompts. The app will guide you through placing the aircraft in different orientations (e.g., belly down, on its side, or standing upright). Keep the aircraft still in each position until the progress bar for that step reaches 100%.
Complete the calibration. Once the app displays a "Calibration Successful" message, the aircraft will restart. You are now ready to fly.
Limitations and considerations
Propellers: You do not need to remove propellers for IMU calibration, but ensure they are folded or clear of the surface so the aircraft can sit flat in all required orientations.
Interference: Avoid calibrating near large metal objects or electronic equipment that may cause magnetic interference.
FAQs
Q: What should I do if the calibration fails? A: If the calibration fails, restart the aircraft and the DJI Fly app, then try the process again. Ensure the aircraft remains perfectly still during each step.
Q: Does IMU calibration also calibrate the compass? A: No. Compass calibration is a separate process located under the same Safety menu. It is best practice to perform both if you have traveled a significant distance to a new location.
Q: Can I calibrate the IMU while the aircraft is in the air? A: No. The aircraft must be powered on but motors must be off, and it must be placed on a stable, stationary surface.
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