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15. Trimming the quadrocopter
If you then notice that the quadrocopter wants to fly to the left or right without any command from the transmitter,
correct the flight behaviour by trimming.
If the quadrocopter drifts or tips sideways to the right, reduce the speed until the quadrocopter once more stands
safely on its landing feet. Press the upper of the two trim buttons for the roll function several times (see Figure 14
dark arrow).
Every time a trim button is pushed, the trim is adjusted by one step and the adjustment confirmed by a
short beep. When the button is pressed and held, the transmitter emits a quick sequence of beeps, and
thus indicates the step-by-step adjustment of the trim. Once the trim's end position has been reached, the
transmitter emits a long beep. The trim's centre position is also indicated acoustically by a longer beep.
Then carefully push the pitch joystick forward again and check whether the adjustment was sufficient. Repeat the
procedure until the model does not show any tendency to drift to the right.
If the quadrocopter wants to drift sideways to the left, press the lower of the two trim buttons for the roll function (see
Figure 14, light arrow).
Figure 14
If you subsequently have the quadrocopter securely under control, you can also optimally adjust the trim during flight.
The setting of the trim is saved in the transmitter. After you switch the transmitter on and off, the trim returns
to the last set position.
Warning!
If big adjustments have to be made to the trim, the position sensors require calibration. The procedure for
this is described in the following section.
