Preparing to y Position
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DF805B Operation Manual DF805B Operation Manual
3. GPS mode and ight mode
The aircraft has built-in GPS positioning module, which must be positioned with GPS equipment in autonomous ight mode and
other functions. When the aircraft meets the following conditions at the same time, the aircraft enters the GPS positioning mode:
(1) Flight mode on RC is P mode;
(2) When the GPS horizontal positioning factor satises the condition;
At this time, the aircraft can maintain a good hovering attitude and autonomous ight.
When any of two conditions are missing, the aircraft automatically enters the attitude mode. At this time, due to the environmental
impact, the aircraft may cause drifting when hovering. At the same time, all autonomous ight functions will not be used.
Illustration:Autonomous flight refers to the flight of aircraft which does not depend on the user's control. It
takes place by acquiring position data through its own GPS positioning system. For example,RTH, one key
return,way point flight and flying around,etc
4. RTH(Return to home)
When the aircraft enters the GPS positioning mode before takeoff, the built-in GPS equipment of the aircraft can automatically record
the takeoff point. The location at which the aircraft acquiescence is recorded is the return point. In the following circumstances, the
aircraft will automatically initiate RTH:
Notice:when aircraft initiate RTH,only returning to land can control the aircraft.
(1) When the battery power is low, the aircraft automatically initiate RTH.
(2) When the aircraft is disconnected from the remote controller, the aircraft automatically initiate RTH
After entering the RTH mode,if the current altitude of the aircraft is less than 30 meters, the aircraft will climb to the altitude of 30
meters rst, then turn to y back to the take-off point and then slowly descend to the ground. If the current height is higher than 30
meters, it will turn at the current height,then ying back to the take-off point and slowly down to the ground.
During the ight, ensure that the aircraft ies within the visual range, and do not y to the back of obstacles (such as buildings,
trees, etc.). Obstacles will occlude signals, which will lead to the disconnection between the aircraft and the remote controller,
thus triggering the aircraft to enter the RTH mode. This may cause the aircraft to hit an obstacle in the course of RTH and cause
accidents.
5. Low battery warning and protection
(1) Low battery capacity to initiate RTH
During the ight, when the battery capacity of the aircraft is low, the status indicator of the aircraft turns red and ickers slowly. APP
also gives a hint. At this point, the aircraft automatically initiate the RTH mode.
Once it initiate the RTH mode cause low battery capacity, it can not exit, the aircraft can be controlled to change the landing site.
(2) Serious low battery capacity warning
When the battery capacity of aircraft is serious low,status indicator light of aircraft turns red ash quickly,at the same time,the aircraft
will force to land.
6. Lose control protection
(1) lose control protection when GPS position is working
After the aircraft enters the GPS positioning mode,when the communication between the aircraft and the remote controller is
interrupted, the aircraft will hover at the current position for 5 seconds, during which time, if the communication can not be
reconnected, the aircraft will initiate RTH.
(2) lose control protection when GPS position is not working
When the aircraft fails to locate by GPS,communication between the aircraft and the remote controller is interrupted for about two
seconds, the aircraft will automatically land at the current position.
7. Compass calibration
Notice:When changing the flight site, it is necessary to calibrate the compass before the first flight.
In the course of usage, if the aircraft indicator is "alternating flashing blue and green lights", it means that
the compass is abnormal and needs to be calibrated.
Please keep away from the environment with magnetic interference when calibrating, otherwise it may
cause calibration failure.
Compass is built in the aircraft, which ensures that the aircraft will maintain an accurate heading during intelligent ight. The compass
condition must be checked for every ight.
○Please calibrate the aircraft compass, if one of the following scenarios happens:
(1) Before ying at the new ight site;
(2) The aircraft status indicator indicates the abnormal compass;
(3) APP and aircraft recommend to calibrate the aircraft compass;
(4) Serious drifting during hover or ight.
○Method of calibrating compass by APP:
(1) Entering calibration mode
When the aircraft and APP are connected properly,click on
the'...'icon in the upper right corner of the APP control interface to
enter the "General Settings" menu.
Then click the " compass calibration" icon.
When APP pops up the prompt, check the current environment and
stay away from metal objects. then click the "calibration" icon.
Meanwhile,the status indicator on the aircraft's rear arm will turn
blue and red lights ashing alternately, which will enter the compass
calibration mode.
