RCbro SPARROW V3 Pro User manual
RCbro®
SPARROW V3 Pro
LefeiRC www.lefeirc.com/
Disclaimers and Warnings
Please use this product within the scope permitted by local laws and
regulations. LE FEI does not assume any legal liability resulting from any
illegal use of this product.
This product is a remote-control aircraft model. Please strictly abide by
the safety operating regulations of model aircraft products. LE FEI does not
assume any performance, safety or legal liability caused by improper
operation and use control.
Aircraft models are not toys. Please fly under the guidance of
professional personnel and install and use them according to this product
manual. LE FEI is not responsible for aircraft model accidents caused by
improper installation, configuration, or operation by users.
Once you use this product, you are deemed to have understood,
recognized and accepted the above terms and content. Please be
responsible for your own behavior, safety and all consequences when using
it.
Content
Parameter............................................................................................................................................ 3
Interface............................................................................................................................................... 3
OSD&LED............................................................................................................................................ 7
Flight Mode ......................................................................................................................................10
Preflight inspection........................................................................................................................11
FAQ .....................................................................................................................................................14
Accessories Description................................................................................................................16
RCbro®
SPARROW V3 Pro
LefeiRC www.lefeirc.com/
RC
PPM/SBUS/IBUS/CRSF
T1
MAVLINK
T2
CRSF
TX
GPS-RX
RX
GPS-TX
S1
AIL
S2
ELE
S3
THR
S4-S8
AUX Channel(S4 defaults to RUD)
CAM1-2
Dual camera
VTX
VTX
9V5
VTX/CAM power supply
BAT
Battery
ESC
ESC
VX
Servo power
G/GND
GND
*It is recommended to remove the propeller during installation and debugging, pay attention
to safety!
➢Servo power
FC 5V BEC(PMU): Use solder to connect the two pins shown in the picture, and disconnect
other BEC of the servo (such as the built-in BEC of the ESC).
External BEC: If you do not connect the two pins shown in the figure, the external BEC is
used by default. The BEC can be connected to any channel among S1-S8.
It’s recommended to use the supplied 3300uF/16V capacitor to get a more stable and
secure working voltage for the PMU. The capacitor can be plugged onto any one of the
free input or output sockets of the FC.
RCbro®
SPARROW V3 Pro
LefeiRC www.lefeirc.com/
➢Large current
When the current is large, it is recommended to tin the exposed pad during soldering,
as shown in the picture below!
When the current is too large and the battery power supply capacity is insufficient, it
may cause the OSD to flicker. At this time, it is recommended to connect a low ESR large
capacitor in parallel with the FC, such as 470uf/30V(included in the accessories);Pay attention
to the positive and negative poles of the capacitor when using it. The common way to judge
is that the longer pin is the positive pole and the shorter pin is the negative pole, or you can
judge by the positive pole (+) or negative pole (-) marked on the capacitor shell,
In some ESCs, the battery voltage and 5V-BEC output voltage fluctuate greatly under
high current conditions, which will cause certain interference to the FC, such as OSD
flickering or even the sensor being affected, resulting in an attitude error. A low ESR large
capacitor is connected in parallel with the output terminal of the ESC (the closer the ESC is,
the better the effect). If space allows, a capacitor can be connected in parallel at the BAT and
ESC terminals of the FC.
➢Remote control and receiver
◐ PPM SBUS IBUS ELRS/CRSF
Just connect the signal to the RC channel, the FC will automatically recognize it;the
default channel sequence is A-E-T-R, which can be modified to T-A-E-R;it supports dual-
channel mode switching and is divided into MAIN-SUB mode channels.You can set 5 flight
modes at the same time. The main mode channel defaults to CH5, before using the sub
mode, you only need to set one of the main modes to
<SUB>
.
◐ Calibrate the RC
Enter the OSD menu
<RC>
-
<RC CALI>
, press and hold the stick for a few seconds
(ROLL to the right) until
< CFM?>
appears. Quickly dial the main mode channel several
times to complete the calibration. If
<ERR>
is displayed after calibration, it indicates that the
calibration failed. Observe whether there is an offset in the channel data displayed on the
OSD. If the calibration fails and the RC cannot be calibrated again, you can turn the roll and
pitch stick to the MAX, and then restart the FC , it will automatically enter
<RC CALI>
.After
the calibration is completed, press and hold the stick for a few seconds (ROLL to the left) to
exit the calibration page.
RCbro®
SPARROW V3 Pro
LefeiRC www.lefeirc.com/
◐ RSSI
RSSI channel can be selected, and the range of RSSI value is the same as that of other
channels. When using ELRS, if the RC cannot set an independent RSSI channel, you can set
<RSSI>
in the OSD menu to
<AUTO>,
which will display LQI (Link Quality Indication).
◐ CRSF Telemetry
When the signal type is ELRS, CRSF telemetry is automatically turned on, and the user
only needs to connect the RX of the receiver to the T2 port of the FC;the telemetry
information includes flight mode, latitude and longitude, attitude angle, speed, altitude,
heading, number of satellites and other information.
◐ Tips
When using the RC, there is no need to set the mixing mode, the user can select the
appropriate model in the OSD setting menu; when entering the OSD setting menu, do not
limit the travel of the sticks.
➢InstallDirection
0D
Arrow points to the head
90D
Arrow points to the right
180D
Arrow points to the rear
270D
Arrow points to the left
R90D
Arrow points to the head, place the bottom of FC on the
right side of the plane
L90D
Arrow points to the head, place the bottom of FC on the left
side of the plane
BACK
Arrow points to the head, and the bottom of FC points up
➢SERVOS CONNECTION
T-TAIL
V-TAIL
WING
S1
AIL1/AIL2
AIL1/AIL2
AIL1
S2
ELE
RUD1
AIL2
S3
ESC
ESC
ESC
S4
RUD
RUD2
NO CONNECTION
*S4 defaults to YAW(RUD) function, and can also be reused for other functions.
*When using dual motors, just select any channel from S4-S8 to reuse it as the THR function, and then
connect the two ESC wires to S3 and the selected channel respectively. If you need to use the throttle
differential function, refer to
<Throttle differential>.
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SPARROW V3 Pro
LefeiRC www.lefeirc.com/
OSD&LED
➢MAIN
1
Flight Mode
12
Throttle
2
Time
13
Acceleration health
3
Temperature
14
GroundSpeed
4
Volatge
15
Horizon Line
5
Cell Voltage
16
Altitude
6
Current
17
Climb Rate
7
Distance
18
Voyage
8
Return Home Angle
19
Power Consumption
9
Flight Direction
20
Latitude and Longitude
10
Satellite
21
Desired Attitude Angle
11
RSSI
22
Actual Attitude Angle
*The GPS icon will continue to flash when GPS is not connected or GPS is not fixed.
*‘>’ means to turn right, ‘<’ means to turn left, and the number after it indicates the specific required
turning angle.
*If the RC icon flashes, it means that the RC is failsafe or the receiver is disconnected. If the GPS has
been fixed at this time, it will automatically switch to the RTH.
➢CONTROL OSD MENU
Enter Menu
Quickly dial main mode channel
Exit
AIL LEFT
Enter
AIL RIGHT
UP/DOWN
ELE UP/DOWN
*When enter or exit the <RC CALI>, ROLL left or right needs to be held for a few seconds.
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SPARROW V3 Pro
LefeiRC www.lefeirc.com/
➢PARAMETERS
RC
RC CALI
Calibrate the RC
CHANNEL TYPE
A-E-T-R or T-A-E-R
RSSI
RSSI
MAIN CHANNEL
CH5/CH6
SUB CHANNEL
CH5/CH6/CH7/CH8/CH9/CH10
MAIN MODE1
STAB/MAN/ACRO/ALT/RTH/FENCE/HOVER/ALT*/SUB
MAIN MODE2
MAIN MODE3
SUB MODE1
STAB/MAN/ACRO/ALT/RTH/FENCE/HOVER/ALT*
SUB MODE2
SUB MODE3
TIMEOUT RTH
Enable RTH after timeout (except RTH and MAN)
TIMEOUT SEC
Set the timeout (the time sticks remain motionless)
CAM CHANNEL
Dual camera switching channel
BASE
FRAME
T-TAIL、V-TAIL、WING
INSTALLATION
InstallDirection
ROLL GAIN
Set the gain, the YAW gain only works in ACRO .
PITCH GAIN
YAW GAIIN
LEVEL CALI
LEVEL CALI
VOLTAGE CALI
Set voltage/current offset
CURRENT CALI
CRUISE SPEED
Flight speed in RTH/HOVER/ALT*
RTH ALT
If the distance is beyond 3 times the circling radius, the
min flying altitude is <SAFE ALT>. If it is higher than this
altitude, it will slowly descend; after approaching the
HOME, the fly altitude is <RTH ALT>
SAFE ALT
FENCE RADIUS
If the distance exceeds this radius, RTH will be triggered
RTH RADIUS
Circle radius
BASE THR
MIN THR in RTH/HOVER/ALT*
ACRO GAIN
Stability gain in ACRO
VEL GAIN
The faster the speed, the smaller the required gain, and
the larger <VEL GAIN> should be.
THR-DIFF
Throttle differential ratio controlled by YAW.
MANUAL
Sticks control ratio in ACRO mode.
MAX ROLL
MAX flight angle
MAX PITCH
BAT-S-NUM
Number of battery cells
SERVO
S1 DIR
Servo direction
S2 DIR
S4 DIR
S5 DIR
S6 DIR
S7 DIR
S8 DIR
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SPARROW V3 Pro
LefeiRC www.lefeirc.com/
S4 FUNC
Set S4-S8 multiplex function, if set to throttle, it will have
differential function
S5 FUNC
S6 FUNC
S7 FUNC
S8 FUNC
S1 MID
Set the servo neutral position
S2 MID
S4 MID
S5 MID
S6 MID
S7 MID
S8 MID
OSD
MODE
When the OSD item is set to <ON>, quickly dial the
main mode channel to enter the OSD position
adjustment page, and adjust the OSD position through
the roll and pitch sticks. After the adjustment is
completed, quickly dial the main mode channel can exit
TIME
VOLTAGE
CURRENT
DISTANCE
RTH ANGLE
SATELLITE
RSSI
THR
ALT
CLIMB RATE
GROUNDSPEED
VOYAGE
MAH
LLA
ATTITUDE
HORIZON
FLY DIR
ALT SCALE
SPEED SCALE
SINGLE CELL
TEMPERATURE
ACCEL HEALTH
DESIRED-ATT
DESIRED-ALT
OSD
Enable OSD overall display
HOS
Set OSD offset
VOS
SYSTEM
TELEMETRY
MAVLINK baud
GPS RESET
GPS RESET
GPS CFG
Whether to configure GPS after powering on. Not
configuring can reduce the initialization time
FC RESET
Restore default settings
FLY SUMMARY
Flight data summary
SUMMARY RESET
Reset flight data summary
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FC DATA
Sensor data display
LANGUAGE
Chinese or English.
*When setting the servo function, RC6-12 means the RC 6-12th channel.
*< FENCE RADIUS>only works in fence mode, other modes do not have fence function.
*After changing the <TELEMETRY>, you need to restart the FC.
➢Flight Summarize
After landing, OSD will show summarize about flight information.
Quickly dial the main mode channel to exit.
➢LED
GREEN
Quick flash
RTH/ALTHOLD/FENCE/HOVER/ALT*
Flash
MANUL/ACRO
On
STAB
RED
Flash
GPS NoFix
On
GPS Fixed
Off
NO GPS
➢GPS
The FC supports UBLOX protocol, but does not support NMEA. After power-on, the FC
will automatically configure the GPS. If the FC cannot recognize the GPS latitude and
longitude, you can reset the GPS through the setting item <GPS RESET>.
Flight Mode
➢How
MAN
The airplane is direct controled by RC.
STAB
Control the angle of airplane,and auto level when no RC input.
ACRO
Gyro mode,lock the current angle when no RC input.
ALT
Hold current height when no ELE input.
FENCE
Auto Retun Home when out of fence radius.
RTH
Auto Retun Home.
HOVER
Hover over the current position.
ALT*
Lock the flight direction and maintain the altitude.
* FENCE/RTH/HOVER/ALT* can only be used when the GPS is fixed, otherwise it will become ALT.
➢SUB Mode Setting
The flight controller supports main-sub mode channel setting, and up to 5 flight modes
can be set at the same time. The setting method is as follows:
Step 1: Select the appropriate main-sub mode channel. It is recommended to use a 3-
pos switch;
Step 2: Select any position in <MAIN MODE 1/2/3> and set it to <SUB>;
Step 3: Set <SUB MODE 1/2/3> to the mode you need;
Step 4: Switch the main-sub mode channel to observe whether the mode change is
correct.
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SPARROW V3 Pro
LefeiRC www.lefeirc.com/
➢Assisted Takeoff
ALT/FENCE/ALT*: Push the throttle to enough power, after takeoff(throw it away), the aircraft
will climb to 20m automatically.
RTH Mode: Push the throttle to enough power, shake the aircraft or run, then the motor starts
slowly, and then take off after the power is enough(throw it away), the aircraft automatically
climbs and circles over HOME.
➢Throttle control
MAN/STAB/ACRO/ALT: Throttle is direct controlled by RC.
FENCE: Before triggering RTH, the throttle is controlled by RC, after triggering, it is determined
by RTH.
RTH/HOVER: Throttle is controlled by RC during assisted takeoff, after entering the circling
state, the throttle is controlled by the FC, it automatically adjusts the throttle according to the
cruise speed you set, you can manually push the throttle up (beyond the throttle calculated
by the FC) to increase cruise speed, but you can't pull it down.
ALT*: Throttle is controlled by RC during assisted takeoff.After the automatic climb to 20m,
the throttle is automatically controlled according to the cruise speed. When the throttle stick
is at the neutral postion, the flight is maintained at the cruise speed. Push the throttle up to
increase the cruise speed, and pull down the throttle to decrease the cruise speed; When the
roll or pitch stick is in motion, the throttle is manually controlled.
➢Throttle differential
Any port in S4-S8 is set to throttle, and the <THR-DIFF> is not zero, then you can control
the differential rotation of the two motors by YAW channel. It is necessary to pay attention
to whether the direction of the speed change of the two motors is correct, if it is not correct,
just swap the two ESC signal wires.
Preflight inspection
➢Feedback direction
* If the feedback direction is not correct, you can invert the channel in OSD.
* The feedback direction must be set first, then the RC control direction.
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➢RC control direction
*If the control direction is not correct, you can set the channel output reverse in the RC.
*After setting the feedback direction, the control direction can only be modified in the RC.
➢FailSafe
When the RC that outputs PPM/IBUS/CRSF is failsafe, there are usually three states that
can be set.They are: cut (no output), pos hold (hold the output at the last moment before
failsafe), custom (the user sets the output when failsafe), of course, different RC will be
different.
Cut mode: the FC can automatic recognition as failsafe,and switch to RTH;
Pos hold: this mode is not recommended.
Custom mode: the user sets the output data of each channel when the RC is failsafe, to
ensure that the output of the mode channel(CH5/CH6) can make the FC switch to RTH
when the RC is failsafe. Therefore, RTH must be included in the three modes set in the OSD.
PPM/IBUS/CRSF: it is recommended to use cut mode or custom mode.
SBUS: the FC can automatic recognition as failsafe,and switch to RTH.
*If you use custom mode, in order to simplify the operation, set the mode channel in the RC to output an
arbitrary value, and then observe which mode the FC switches to after failsafe and then change the mode to
RTH in the OSD. For example, after the RC is failsafe, the flight mode is automatically switched to A, then just
set the position of A to RTH in the OSD.
➢FC Installation
①After the FC installation is completed, you need to set the correct installation direction
in the OSD menu. For the selection of the installation direction, refer to
<InstallDirection>
;
②When installing, try to ensure that the direction is accurate. For example, when
pointing to the head of the plane, try to ensure that the FC is parallel to the direction of the
head of the plane, and there is no obvious included angle, otherwise the flight attitude will
be affected;
③When installing the FC, try to place it at the center of gravity and avoid placing it too
close to the motor to avoid vibration that affects the flight attitude.
➢LEVEL CALI
Calibration method: Place the FC horizontally and still, then start calibration, and wait
for the calibration to be completed; when placing the FC in the cabin for calibration, ensure
that the FC is placed horizontally in the cabin, and at the same time place the aircraft
horizontally and still, and then start calibration.
RCbro®
SPARROW V3 Pro
LefeiRC www.lefeirc.com/
When calibration is needed: It is recommended to perform level calibration when using
the FC for the first time; after changing the installation direction, it is necessary to perform
level calibration again; it is recommended to perform level calibration after it has not been
used for a long time.
Calibration precautions: Try to keep it horizontal when calibrating, allowing a very small
angle difference, which will not affect calibration and flight; you must remain still during
calibration and do not shake the FC.
➢Armed
NO GPS: after the FC is initialized, it will be automatically armed, and the motor can be started
in all modes at this time.
With GPS: after GPS fixed, except for RTH and HOVER, the motor can be started at will, but
before fixed, only MAN can start the motor.
➢Calibrate ESC
Step1：Switch to MAN mode, push throttle channel to the max;
Step2：Power on, OSD prompt <THR> (longer waiting time than directly connected receiver).
Step3：After ESC Beep, push throttle channel to zero.
*If it is a dual motor, you can calibrate the two ESCs separately!
RCbro®
SPARROW V3 Pro
LefeiRC www.lefeirc.com/
FAQ
Q. Important question! ! !
A. Failsafe is very important and must be set! It is recommended to record DVR when using
for the first time!
Q. The rudder surface response is too small in STAB or other modes.
A. Under normal flight conditions, you can increase the gain appropriately and the control
surface response will increase.
Q. The RC cannot control servos in RTH and HOVER.
A. This is a normal phenomenon. In RTH and HOVER, the servo is automatically controlled by
the flight controller!
Q. Is there any throttle output in RTH and HOVER during flight?
A. It is recommended to fly normally for more than 6 seconds before switching to RTH or
HOVER. At this time, the throttle is automatically controlled by the flight controller. If you
switch to return mode 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 and HOVER.
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 flight controller 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.About cruise speed setting.
A. Do not set the cruise speed too low, as it may cause stalling. It is recommended to refer to
the cruise speed given by the manufacturer before setting it. If you feel that the cruise speed
is set too low and the flight is dangerous, you can manually push the throttle up!
Q. Does the flight controller support devices such as FM30 and HM30?
A. Support. The flight controller can output the MAVLINK with two baud rates of 57600 and
115200. The user can connect the T1 port of the flight controller to the RX of the data
transmission device, and then select the appropriate baud rate in the <TELEMETRY>.
Q.Why does the motor keep beeping?
A.
<Throttle control>
&
<Armed>
Q.RTH or FENCE or HOVER or ALT* mode becomes ALT.
A.RTH /FENCE /HOVER/ALT* can only be used when the GPS is fixed, otherwise it will become
the ALT.
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SPARROW V3 Pro
LefeiRC www.lefeirc.com/
Q.RSSI is incorrect.
A. Check which channel the RSSI is set in the RC, and then modify the <RSSI> in the flight
controller to the corresponding channel; RSSI with independent wiring is not supported;
When using ELRS, if the RC cannot set an independent RSSI channel, you can set
<RSSI>
in
the OSD menu to
<AUTO>,
which will display LQI (Link Quality Indication).
Q. Why can’t the SBUS automatically recognize the failsafe?
A. Because some receivers are not standard SBUS, the flight controller may not be able to
automatically identify the failsafe. In this case, the user needs to manually set failsafe. Please
refer to
<FailSafe>
.
Q. ALT* 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 ALT*.
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 flight controller
according to the cruising speed. Therefore, if there is a large difference between the manual
throttle and the actual throttle calculated by the flight controller when the stick is in motion,
it will cause a sudden change in the throttle.
Q. About the dual-channel camera.
A. When using only one camera, the CAM1 channel is enabled by default. If the camera is
connected to CAM2, there will be no image output, but there will be OSD. When using dual
cameras, you only need to set the
<CAM CHANNEL>,
you can switch the screen through
the corresponding channel; When using dual cameras, it is recommended that both cameras
be in PAL or NTSC format. This can avoid image or OSD flickering when switching. It is also
recommended to use PAL format cameras. The OSD fonts are moderate and the display effect
is good.
Q.What type of GPS can be used for flight controller?
A. The SPARROW V3 Pro support protocol is UBLOX and does not support the NMEA
protocol. Therefore, please pay attention when choosing. The series that support UBLOX
include the 6th, 7th, 8th, 9th and 10th generations.
Q. Regarding the current sensor problem.
A. The maximum current that the FC can effectively measure is 80A, and the maximum current
that the FC can withstand is 120A. After exceeding 80A, the current display value is no longer
accurate. At the same time, in order to ensure the safety of the FC, it is not recommended for
users to use it beyond the range; When using a large current within the measuring range for
a long time (for example, more than 50A for a long time), the temperature rise caused by
different current and heat dissipation environments must also be considered. Excessive
temperature rise may cause the solder to melt and affect flight safety. If you need to fly with
a large current for a long time, it is recommended to test on the ground first.
RCbro®
SPARROW V3 Pro
LefeiRC www.lefeirc.com/
Accessories Description
Camera wire x 2: Compatible with CADDX and other camera wire sequences. Be sure to
check whether the wire sequence needs to be modified before use.
VTX wire x 1: Compatible with PandaRC and other VTX wire sequences. Be sure to check
whether the wire sequence needs to be modified before use.
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