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b) Trimming
The quadrocopter is generally not 100% internally stable due to its technical equipment and will not always
stop in place but may drift in some direction or another at times. The drift is caused by outer circumstances
(e.g. wind) or by uncalibrated sensors (gyros). This is absolutely normal in this price class, however, and
can be eliminated by calibration of the sensors as well as by trimming.
If the quadrocopter drifts in one direction in flight, you need to trim in the other direction with the relevant trimming at
the transmitter.
If, for example, the model turns to the left around its own axis (yaw), you need to push the right trimming button for
yaw repeatedly (figure 5, item 8) until the model stops turning around its own axis. If the model turns to the right, you
need to push the left trimming button (figure 5, item 8).
If, for example, the model floats forward (nod), you need to push the rear trimming button for nod repeatedly (figure
5, item 13) until the model stops moving forward. If the model floats to the rear, you need to push the front trimming
button (figure 5, item 13).
If, for example, the model floats left (roll), you need to push the right trimming button for roll repeatedly (figure 5, item
14) until the model stops moving to the left. If the model floats to the right, you need to push the left trimming button
(figure 5, item 14).
c) Calibration
If the trimming paths are no longer sufficient to make the model hover in
place (e.g. after a crash), the sensors must be re-calibrated.
For this, put the quadrocopter onto a level surface ready to start. Now
pull both control levers to the lower right for approx. three seconds (see
figure 10).
The LEDs at the model flash at a very fast rhythm now. Hold both control
levers in the indicated position until the calibration is complete. Cali-
bration is complete when these LEDs at the model are permanently lit
again.
Figure 10
