LeFeiRC SN-L User Manual
SN-L user manual
SN-L
FixedWingFLightController + Pixel OSD
Ver 2.0
FW 5.5+
LeFeiRC
2019/1/10
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SN-L user manual
WARING：
Please strictly observe the relevant national laws and regulations for safe flight. We do not advocate
flying high, flying far, experience the fun of the model airplane in a fully safe environment, and create a
good environment for model airplane sports! Before using the flight control, you must fully understand
the various safety details and deeply understand that the flight is risky. It is impossible to be completely
reliable on the equipment and any electronic products on the aircraft. You should use the Sinan (SN_L)
fixed-wing flight control to evaluate the product and use the system according to relevant regulations.
The system provider does not use the product for any use. Responsible for direct or indirect losses and
consequences.
i. 目录
Flight Mode： ...................................................................................................................................................... 3
How to Switch Flight Mode： ......................................................................................................................... 4
FC Iinstal： ............................................................................................................................................................ 4
Remote Contoller： ........................................................................................................................................... 6
Pre Flight checklist： .......................................................................................................................................... 7
Flight and control： ........................................................................................................................................... 8
OSD Menu ............................................................................................................................................................. 8
Firmware upgrade ............................................................................................................................................ 10
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SN-L user manual
Interface：
RSSI Connect to receiver RSSI channel
PPM Connect to SBUS/PPM
A1 Extend other functional interfaces
A2 Extend other functional interfaces
AIL Aileron servo interface
ELE Elevator servo interface / Airspeed interface
THR ESC interface
RUD RUD servo interface
GPS Connect to GPS
PMU Power/Camera/VTX/Current, all in one interface
Connect AirSpeed Meter
Step1: set AUX1/AUX2 channel as ELE function
Step2: connect ELE servo to AUX1/AUX2 channel
Step3: connect airspeed meter to ELE channel
Step4: power on again
If you should change ELE servo direction, you should set AUX1/AUX2 channel direction
Power Supply
All the above interfaces are powered by the external 5v BEC module, and the flight controller does not output
5V to supply power to these interfaces.
Flight Mode：
MANUAL Remote control directly controls the aircraft
STAB
HORIZON
Auto level
ACRO mode + STAB mode
RTH Return to home
HOVER Altitude hold and cycle。
AH
FIX-RUD
ACRO
SUB-MODE
RTH Mode
Aircraft hold altitude and flight route(with GPS)
Keep on the route
Gyro mode
Switch mode to slave mode
When the return altitude is higher than the set height, for example, returning at a height of 150m. If the set return
altitude is 120m, the aircraft will return at a height of 150m, and then decrease the altitude to 120m when approaching
the home position. If the return altitude is less than 30m, the aircraft will climb to 30m before turning. The RC cannot
control the aircraft during the RTH mode, but the throttle can be raised by the throttle stick.
In auto cruise mode, the throttle is automatically calculated based on the speed(airspeed or ground speed). In the
case of a downwind or a large wind, the throttle can be raised by the remote control to prevent the aircraft from stalling.
for example if auto throttle is 45%, but the RC throttle is 50%, then FC output 50% throttle.
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SN-L user manual
AltHold mode
FC will lock the route if GPS is connect. Otherwise only hold altitude.
When GPS is connected, RUD stick can change the head direction, ELE stick can control climb down/up speed; if
move AIL stick FC will enter stab mode(throttle will be controlled by RC).
How to Switch Flight Mode：
SN_L sets the RC channel 5 as the main mode switch, so the 5th channel of the RC must be set to a three-segment switch; the
subMode switch can be selected or not used when the remote controller is calibrated.
Example:
ModeSwitch subModeSwitch
STAB RTH
SUB-MODE
HOVER
MANUAL ALtHold
FC Iinstal：
① PMU Module
② Install direction
4 install direction：<BASE FUNCTION> -> <AP DIRECTION>
0° Arrow point to head
180° Arrow point to rear
90° Arrow point to left
270° Arrow point to right
The FC installation should try to avoid the vibration source and keep away from the motor; try to install it near the center of
gravity. Be sure to recalibrate the level after changing the installation direction
③ How to connect servo
Interface
Type
Wing Servo1 Servo2 ESC ALL ALL
T tail AIL servo ELE servo
V tail AIL servo ELE servo1 ESC ELE servo1
AIL ELE THR RUD AUX1 AUX2
ESC RUD servo
ALL ALL
ALL ALL
It is recommended that you use an external 5v power module to servos and receiver.
AUX channel
AUX channel can extend other functions, such as outputting RC channels, or multiplexing AIL，ELE，THR.
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