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turn green) click OK, leaving the external magnetometer orientation unchanged. Then reboot the vehicle.
After the compass calibration ALWAYS verify the compass is reading correctly by pointing the vehicle north,
east, south and west and at every turn verify that the vehicle icon on the ground station is pointing in the
correct direction, and remains pointed in that direction for at least 30 seconds. if the compass is not reading
correctly by more than 8 degrees, please retry the calibration. If the problem persists please contact Vertical
Technologies.
Gyroscope calibration
The gyroscope calibration is best performed indoors. It requires the vehicle to sit level based on the VTOL
arms. To level the vehicle based on the VTOL arms it is recommended to find a level surface (a table) and
place 4 objects of equal height under the quadcopter motors. For example soda cans. The foam underside
of the vehicle should be free from the table and the carbon VTOL arms should sit level horizontally.
When the vehicle is sitting level, press OK to start the calibration. This will complete in about 20 seconds.
The vehicle should not be touched or moved during the calibration process. Then reboot the vehicle. If, for
any reason, the vehicle is moved during the calibration process then repeat the process from the beginning.
Accelerometer calibration
To start the accelerometer calibration, click the accelerometer button and follow the instructions on the
screen. The calibration process starts when clicking OK. The autopilot orientation parameter in the GCS
should remain unchanged. An accelerometer calibration involves positioning the vehicle on all axis. This
calibration step can be performed by hand. The canopy should be closed and the LiPo battery should be
inserted and securely fastened.
Perform the calibration as indicated by the images on the Ground Control Station, ensuring the vehicle is
motionless at each point in the calibration process. Then reboot the vehicle.
Level horizon
WARNING: This calibration is rarely needed outside of the factory. Performing this calibration
incorrectly can cause the vehicle to become unstable or crash.
Before leveling the horizon all other calibrations, except compass calibration, must have been completed.
The Level Horizon calibration is best performed indoors. It requires the vehicle to sit level based on the
VTOL arms. To level the vehicle based on the VTOL arms it is recommended to find a level surface (a table)
and place 4 objects of equal height, such as soda cans or soup tins, under the quadcopter motors. The foam