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IMU Calibration
The Intertia Management Unit (IMU) provides the raw data of the aircraft's attitude in space in nine
dimensions.
The IMU accelerometer sensor is critical to balance the aircraft in flight.
To determine if the IMU is properly calibrated, with the drone stationary on a completely flat and level
surface check the (P) Pitch and (R) Roll values on the remote control. These values should be between -1
and 1 (zero) and remain stable. Additionally, if the drone’s response feels skewed, the IMU may need
recalibration
IMU calibration is necessary if:
1. The aircraft cannot start the motors after completing the compass calibration.
2. When hovering in GPS mode, the aircraft hover is unstable or drifts constantly.
3. The aircraft has crashed, been hit or violently shaken.
4. The remote-control display prompts "WARNING IMU error-Calibrate IMU".
Note: Never calibrate the IMU on a boat or moving platform
When the drone is floating amongst waves, it may occasionally display an IMU calibration, which is normal
and can be ignored.
IMU Calibration Process
1.
Place the drone on a horizontal surface. Power on the remote control then the drone. Wait for
initialization to complete.
2.
Push the left joystick up to the highest position and then fast flick the right joystick left and right
continuously until “WARNING Aircraft Initializing, Please Wait” appears on the FPV screen
3.
Do not move the aircraft. Within 20 seconds, the front and rear arm lights will stop flashing alternately,
the front arm red light will flash quickly, and the rear arm green lights will glow. The "WARNING Aircraft
Initializing, Please Wait" prompt disappears on the remote-control display screen, indicating that the
calibration is successful.
4.
Please restart the aircraft.
Note: If the warning message “WARNING Aircraft Initializing, Please Wait“
remains on the screen, the
calibration has failed and needs to be repeated.
Gyroscope (Accelerometer) Calibration
The gyroscope provides stability data to the flight computer. If the gyroscope is not well calibrated,
the aircraft will tilt to one side when it takes off, and the angle will become increase until the aircraft
can no longer fly.
If the system detects an abnormal gyroscope, it will display a Gyroscope warning message.
