RCbro SPARROW 2 User manual

RCbro® SPARROW 2 User-Manual
LefeiRC www.lefeirc.com/
SPARROW 2
Manual v2.0
Description
On the basis of the SPARROW FC, SPARROW 2 has updated the operation
mode to simplify the user's use and enhance the operation experience. At the
same time, it adds support for a variety of receiver signals, including
PWM,PPM,SBUS,IBUS,CRSF and supports DJI-OSD,CRSF-TELE. For specific
functions and usage, refer to the detailed description below.

RCbro® SPARROW 2 User-Manual
LefeiRC www.lefeirc.com/
WARNING
Please strictly abide by relevant national laws and regulations
and fly safely. Before using the FC, you must fully understand the
safety details. The equipment and any electronic products on the
aircraft cannot be completely reliable. The necessary inspections
must be carefully performed before the flight.
Content
1. PARAMRTER ..............................................................................................................................3
2. INSTALLATION & WIRING ....................................................................................................3
3. REMOTE CONTROL.................................................................................................................5
4. GAIN.............................................................................................................................................7
5. FLIGHTMODE ............................................................................................................................8

RCbro® SPARROW 2 User-Manual
LefeiRC www.lefeirc.com/
1. PARAMRTER
2. INSTALLATION & WIRING
➢FC Installation Direction
➢Interface
FC
Size
33*27*12mm
Weight
11g
Voltage
5V
GPS
Size
18*18*6mm
Weight
6g
Voltage
5V
Receiver
Type
PWM,PPM,SBUS,IBUS,CRSF(ELRS)
Others
Accessories
FC,GPS,Screwdriver,Wire
Protocol
DJI-OSD,CRSF-TELE

RCbro® SPARROW 2 User-Manual
LefeiRC www.lefeirc.com/
Servo
AIL
AIL
ELE
ELE
THR
THR
RUD
RUD
AUX
RC CH6 or CH7 output
Receiver
CH1-4
PWM-IN,CH1-4:AIL,ELE,THR,RUD
RC
PPM,SBUS,IBUS,CRSF or PWM Mode Channel
TX
CRSF-TELE
GPS
Refer to the schematic diagram to connect
*It is recommended to select the 3-switch as a mode channel.
*It supports 5-channel PWM input, so when using PWM receiver, the AUX cannot be used.
*For PPM, SBUS, IBUS, CRSF, the order of channel 1-4 is defined as AIL, ELE, THR, RUD.
*The 5th channel of the PPM/SBUS/IBUS is the mode channel, the 6th channel is the AUX.
*The 6th channel of the CRSF is the mode channel, the 7th channel is the AUX.
➢DJI
*DJI interface also supports voltage detection.
*DJI interface voltage detection ranges from 2~6s, pay attention to the DJI supply voltage
(7.4-17.6V) when wiring, so as not to burn equipment!
➢DJI-OSD
The display includes:Latitude/Latitude, Satellite, Altitude, GroundSpeed, ClimbRate,
Distance, Voltage,Attitude information, FlightMode, Heading.

RCbro® SPARROW 2 User-Manual
LefeiRC www.lefeirc.com/
➢CRSF-TELE
3. REMOTE CONTROL
➢How to judge whether the RC is normal?
After the PC is powered on, all the LEDs are on, and the GPS configuration starts. The 3
green lights flash at the same time, indicating that the GPS configuration is completed,
and the RC is not recognized; when the green light T and V flash rapidly at the same
time, the RC has been recognized.
* When power-on, the sensor takes 15 seconds to initialize, please keep the FC level.
*The green light T and V flash quickly and the △ is on, indicating that the RC signal has been
recognized, but the roll or pitch has a large trim or the throttle is not at the lowest position.
➢How to use the RC to unlock the FC?
Step 1: Keep the throttle at the lowest position after power on;
Step 2: Push the throttle to the highest position;

RCbro® SPARROW 2 User-Manual
LefeiRC www.lefeirc.com/
Step 3: Push the throttle to the lowest position, the green light starts to indicate the type
of plane and flight mode.
➢How to use the FC to calibrate the ESC?
Step 1: Push the throttle to the highest position in MANUAL mode;
Step 2: Power on;
Step 3: Green light T and △flash, pull the throttle to the lowest after hearing the ESC
tone, the green light starts to indicate the type of plane and flight mode.
➢How to use the RC to set the type of plane?
Set the type of plane through the quick hit mode switch (CH5 or CH6) after using the RC
to unlock the FC.
*You need to stop one second after switching once to continue to switch.
➢How to use the RC to calibrate level?
FC is placed horizontally and kept still,choose a way to
dial the sticks as shown in the figure, until the three
green lights flash at the same time.
➢How to use the RC to set direction of the servo?
*Must be completed before unlocking the RC.
Step 1: Check the feedback direction.
Step 2: If the feedback direction is not correct, turn the AIL or ELE stick to the maximum
position and hold it until the direction of the servo changes.
Step 3: Check the feedback direction again.

RCbro® SPARROW 2 User-Manual
LefeiRC www.lefeirc.com/
➢How to set the RC direction?
*If the control direction is not correct, you can set the channel output reverse in the RC.
➢FailSafe
Type
Setting method
PWM
Set the mode channel output in the RC to ensure that the flight
mode is RTH after the RC is turned off.
PPM
IBUS
CRSF
SBUS
Automatically identify whether it is out of control.
*Must connect to GPS when using it, otherwise RTH mode cannot be used.
4. GAIN
*The knob adjusts the overall sensation of the flight control, and does not distinguish the
individual channel.

RCbro® SPARROW 2 User-Manual
LefeiRC www.lefeirc.com/
5. FLIGHTMODE
Red LED
Describe
OFF
NO GPS
Flash
NO Positioning.Can not fly.
nON
Successful Positioning.You can fly.
➢AUTO TAKEOFF
ALTHold mode: Push the throttle to the MAX and after the motor rotates, the plane will
automatically climb to a height of 25m.
RTH mode: Push the throttle to the MAX, shake the plane or give the plane an initial
speed. After the motor rotates(Start slowly), the plane will automatically climb and circle
at HOME.
➢Takeoff/Landing State
The motor is slowly activated only in the takeoff / landing state, when the altitude is
above 30m, the speed is greater than 3m/s, then enter the normal flight state,at this time,
switch to the RTH mode, the motor is no longer started slowly; when the altitude is below
15m, the throttle is minimum, the speed is less than 1 m/s, then enter the landing state,
at this time, switch to the RTH mode, the motor will start slowly.
➢Throttle Control
The throttle in the return home mode is controlled semi-automatically. If the cruising
speed is low, the user can manually raise the throttle to increase the speed; the throttle
in other modes is manually controlled.
➢Throttle Output
Before using RC to unlock the FC, the throttle is locked,no output! After unlocking, the
throttle output is determined by the GPS state, referring to the table below.
MODE
NO GPS
NO Positioning
Positioned
MANUAL
RC throttle
RC throttle
RC throttle
STABILIZATION
NO Output
ALTHOLD
RTH
RTH
RTH
ALTHOLD
NO Output
<Throttle Control >
MODE
Describe
Green LED
MANUAL
RC directly controls the aircraft
Slow Flash
STABILIZATION
Auto level
ON
ALTHOLD(NO GPS)
Plane holds altitude, 25m minimum height limit
Fast Flash
RTH(GPS OK)
Return to home. Circle within a radius of 50 m at an altitude of 70 m,13m/s
Fast Flash