LeFeiRC SN-L User Manual

: June 6, 2024
: LeFeiRC

Table of Contents

INTERFACE：
FLIGHT MODE:
SWITCH FLGHT MODE：
INSTALLATION：
REMOTE CONTROLLER
OSD：
PREFLIGHT CHECKLIST：
FLIGHT & CONTROL
FIRMWARE UPGRADE
References
Read User Manual Online (PDF format)
Download This Manual (PDF format)

USER MANUAL
FixedWingFLightController + Pixel OSD

LeFeiRC SN-L
Verv2.2
FW 3.2+
LeFeiRC
2020/4/20

WARING:
Please strictly observe the relevant national laws and regulations for safe flight. We do not advocate flying high, flying far, experiencing the fun of the model airplane in a fully safe environment, and creating a good environment for model airplane sports! Before using 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.

INTERFACE：

LeFeiRC SN-L - fig1

POWER
① VTX, CAM, is powered by PMU 12V
② GPS, FC is powered by PMU 5V
③ Servo and receiver are powered by external BEC
LED
**** RED LED| GPS| GREEN LED| RC
---|---|---|---
OFF| disconnect| FLASH| Lose control
FLASH| Satellite < 7| ON| normal
ON| Satellite > 6| 1| 1
CONNECTOR
AIL| AIL servo
---|---
ELE| ELE servo
THR| ESC signal
RUD| RUD servo
AS / AUX1| Airspeed connector/AUX1
AUX2| AUX2
PPM / AUX3| PPM connector/AUX3
SBUS| SBUS
VTX| Video transmitter
CAM| camera
GPS| GPS/ upgrade FW / tune parameters
HOW TO CONNECT DIGITAL VIDEO TRANSMITTER

GCS ver1.5.0
If you do not use the OSD function, please close it by SN_GCS.
Set telemetry port as < DJI > by OSD < MISC > or SN_GCS.
HOW TO CONNECT SN_GCS (GPS port baud:115200)
Connect to GCS by our upgrade tool board or Bluetooth.

FLIGHT MODE:

MANUAL	Remote control directly controls the aircraft
STAB	Auto level
HORIZON	ACRO mode + STAB mode
RTH	Return to home
HOVER	Altitude hold and cycle。
ALTHOLD	Aircraft hold altitude and flight route ( with GPS )
HEAD LOCK	Keep on the route
ACRO	Gyro mode
SUB-MODE	Switch mode to slave mode

RTH MODE
① You need to set **< CRUISING SPEED >, < CIRCLE RADIUS >, < RTH SAFE ALTITUDE

and < RTH ALTITUDE > in the RTH mode.
< RTH SAFE ALTITUDE > refers to the height that the aircraft needs to maintain when returning home; for example, The aircraft begins to return home at an altitude of 2000 meters. At this time, when the < RTH SAFE ALTITUDE is set to 500m, the aircraft will slowly descend to 500 meters and then return home; If the < RTH SAFE ALTITUDE >is less than 500 meters, the aircraft will climb to a height of 500 meters first.
< RTH ALTITUDE >** refers to the altitude when the plane is hovering
ALTHOLD MODE
FC will lock the route if GPS is connected. Otherwise only hold altitude. The throttle stick is placed in the middle position, meaning that the current speed is equal to the set speed. Move up or down to increase or decrease speed.
GEO-FENCE:
Enter the OSD setting item < AUTO PARAMETER>:
< GEOFENCE DISTANCE>: The aircraft will automatically switch to the home mode when flying over this distance. Cancel the home mode by quickly dialing the mode stick; ‘0’ means to close the radius fence limit.
< GEOFENCE ALTITUDE>: If the aircraft exceeds this altitude, the altitude will be forcibly lowered; ‘0’ means to close the altitude limit.

SWITCH FLGHT MODE：

HOW TO SET FLIGHT MODE
① Set by SN_GCS
• The stroke range covers the position of the switch.
• Do not repeat the stroke range of different modes.
• Only one mode is allowed to be in the valid range at a time.
② Set by OSD
Example：

Position	Mode switch	SUB-Mode Switch
1	STAB	RTH
2	SUB-MODE	HOVER
3	ALTHOLD	MANUAL

INSTALLATION：

PMU MODULE
INSTALL DIRECTION OF FC****

4 install direction： < BASE FUNCTION> ->

0°	Arrow point to head
180°	Arrow point to the rear
90°	Arrow point to the left side of the nose
270°	Arrow point to the right side of the nose

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

HOW TO CONNECT SERVO

Type / Interface	AIL	ELE	THR	RUD
Wing	SERVO 1	SERVO 2	THR	RUD SERVO
T tail	AIL SERVO	ELE SERVO	THR
V tail	AIL SERVO	ELE SERVO1	THR	ELE SERVO2

How to configure the throttle differential: Just configure one of the AUX ports such as AUX1 as the < THR > function, the flight control will differentially control the throttle channel and the AUX1 channel; Note that the differential control map is the direction stick, please Confirm that the direction of the throttle differential is correct, and set the differential amount in < SERVO >-> < THRROTLE DIFF >. The greater the differential amount, the faster the flight turns, but it is easier to stall.

CORRECT CONTROL SURFACES MOVEMENT
*CONNECT AIRSPEED
AUX1 channel set as
**
TELEMETRY PORT
* Port TX as telemetry port.
TX port can be set as / / .
If you set it as , the airspeed meter could not work normally.**

REMOTE CONTROLLER

Set RC channel travel range
Please set range at OSD or SN_GCS:
Enter OSD menu :
CHANNEL MAX: select and pull throttle stick to the max position; hold throttle and exit.
CHANNEL MID: select and exit.
CHANNEL MIN: select and pull throttle stick to min position; hold and exit.
Learn RC
Why should learn RC?
To let FC learn channel direction and channel type (AETR or TAER).
STEP1: power on FC.
STEP2: pull RUD channel to max position (right or left) before OSD starts picture show.
STEP3:
FAILE SAFE
① SBUS receiver can automatically identify the out-of-control, auto switch to RTH mode (when GPS satellite > 6).
② PPM receiver cant auto-identify out of control, you should set failsafe mode by yourself.
Check the fail-safe mode before takeoff

OSD：

Flight Summary
After landing, the flight summary will be displayed.
Quick switch flight mode to cancel summary window.
How to enter the OSD menu
Quick switch CH5. Cant enter the OSD menu when flying.
How to select a menu

enter the OSD menu item	AIL channel right
Exit OSD menu	AIL channel left
Move the cursor	ELE channel up or down

PREFLIGHT CHECKLIST：

Unlock throttle
① Make sure you have set < MIN CHANNEL VALUE>
② GPS Satellites fixed
CHECK ACCEL HEALTH --
① The vibration is in good condition. When the plane is lying flat, the vibration point is scattered within the two warning lines.
② The vibration is large, and most of the vibration points fall outside the warning line, which easily leads to the FC can’t calculate the correct attitude
CALIBRATE LEVEL -
① Ensure that the aircraft is level and static during horizontal calibration.
② Horizontal calibration is required after changing the mounting direction.
③ If you have not calibrated for a long time or the temperature difference has changed too much, you need to recalibrate.
SENSITIVITY ADJUSTMENT
① < BASE FUNCTION>- - -: The larger the value, the faster the reaction speed and the excessive jitter.
② < BASE FUNCTION >-: The larger the value, the faster the response joystick will be, and the jitter will be exceeded.
③ Adjustment Steps:
Step1：set < FEED FORWARD GAIN>, normally reduce the feed-forward gain to 45
Step2：set the < AIL BASE GAIN> - -. You can fly by default, then increase or decrease the sensitivity according to the state of flight.
④ PID speed Factor
PRINCIPLE: the faster the speed, the smaller the rudder surface sensitivity should be. The greater the value, the greater the speed involved in PID control.
EXAMPLE: when the speed of the aircraft is very fast, the aircraft begins to shake; then you can increase < ADVACE FUNC>-<STAB
GAIN >-value.
⑤ Altitude hold gain < ADVANCE FUNC>-- IN RTH ，ALT-HOLD, WAY-POINT mode, if aircraft action like this in the pitch direction:

LeFeiRC SN-L - graph please decrease alt-hold gain.

FLIGHT & CONTROL

AUTO TAKEOFF：
① AltHold mode： Push the throttle to enough power and the aircraft will automatically climb to a height of 20m.
② RTH mode:
Way1: push the throttle channel away from the zero position, give plain a speed until the motor starts.
Way2: push the throttle channel away from the zero position, shake the aircraft, until the motor starts. Aircraft will auto climb at 30m.
SPEED CONTROL
① Disconnect Airspeed
Speed is controlled by the ground speed, cruising speed set in < ADVANCE FUNCTION>-.
② Connect Airspeed
Speed is determined by airspeed, Preventing the wind from flying in the head, causing the ground speed to be too small, please set < MINIMUM GROUND SPEED>.