RCbro
®
SPARROW V2 Pro
LefeiRC www.lefeirc.com/
FAQ
Q. Important question! ! !
A. Failsafe is very important and must be set!
Q. The rudder surface response is too small in STAB or other modes.
A. If the aircraft does not shake during flight, you can increase the gain appropriately.
Q. The RC cannot control servos in RTH.
A. This is a normal phenomenon. In RTH, the servo is automatically controlled by the FC!
Q. Is there any throttle output in RTH during flight?
A. It is recommended to fly normally for more than 6 seconds before switching to RTH. At
this time, the throttle is automatically controlled by the FC. If you switch to RTH just after
takeoff in other modes, it is recommended to manually push the throttle to a point with
sufficient power.
Q. Throttle problem in RTH.
A. If assisted takeoff is not performed, there will be no response when pushing the throttle;
during assisted takeoff, after the aircraft is shaken or the run-up conditions are met, the
throttle begins to slowly increase to the pos of the throttle stick (therefore, the throttle needs
to be pushed to sufficient power at the beginning ), after starting to hover, the throttle will
be automatically controlled based on the cruising speed. At this time, the user can push the
throttle up, but cannot pull it down. That is, the FC calculates the throttle value that meets
the current cruising speed, and then compares it with the current actual throttle stick. The
actual output value is the larger of the two.
Q.RTH or FENCE or ALTCTL mode becomes ALTHOLD.
A.RTH/FENCE/ALTHOLD can only be used when the GPS is fixed, otherwise it will become the
ALTHOLD.
Q.RSSI is incorrect.
A. Refer to
<RSSI>
.
Q. Why can’t the SBUS automatically recognize the failsafe?
A. Because some receivers are not standard SBUS, the FC may not be able to automatically
identify the failsafe. In this case, the user needs to manually set failsafe. Please refer to
<FailSafe>
.
Q. ALTCTL cannot maintain the direction.
A. Check whether the ROLL and PITCH sticks are centered.
Q. The throttle suddenly changes when operating the sticks in the ALTCTL.
A. When the roll or pitch stick is in motion, the throttle is manually controlled; after the stick
is returned to the center, the throttle output is automatically controlled by the FC according
to the cruising speed. Therefore, if there is a large difference between the manual throttle
and the actual throttle calculated by the FC when the stick is in motion, it will cause a sudden
change in the throttle.
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