Why do we need to calibrate the magnetometer?

The main reason for calibrating the magnetometer of a drone is to ensure the accuracy of its flight navigation. Specifically, calibrating the magnetometer has the following important functions for the drone:

   1. Accurate Direction and Positioning: The magnetometer (also known as the electronic compass) is a crucial component of the drone’s navigation system. By detecting the Earth’s magnetic field, the drone can determine its direction. If the magnetometer is not calibrated, it may provide incorrect directional data, causing the drone to navigate inaccurately.

   2. Stable Attitude: During flight, the drone needs to maintain a stable attitude. The data from the magnetometer, combined with other sensors (such as gyroscopes and accelerometers), helps the drone stabilize its attitude and avoid instability caused by incorrect directional data.

  3. Preventing Magnetic Interference: The geomagnetic field in different areas may be affected by environmental metal objects or electromagnetic devices. By calibrating the magnetometer, the drone can identify and compensate for these interference factors, ensuring that the directional data provided by the sensor is more reliable.

  4. Improving Flight Accuracy: When performing tasks such as mapping or inspections, accurate magnetometer data can enhance the flight precision of the drone, ensuring that the tasks are executed according to the predetermined route and manner.

Therefore, magnetometer calibration is an important step before the drone’s flight, ensuring the safety and accuracy of the flight.

Long press the one-key magetometer caliberation button, the re mote controller beeps once, and the front and rear lights flash quickly.

Hold the aircraft horizontally and rotate it clockwise until the remote controller beeps once, the front light of the aircraft flashes quickly, and the rear light stays on.

Rotate the aircraft with the camera facing down clockwise until the remote controller beeps once, the front light of the aircraft stays on, the rear light flashes slowly, indicating successful magnetometer calibration.

Notice: Once you power off or change another battery, even if you put the drone at the same place, you must caliberate the magnetometer, or maybe the drone will lose control.