FY-41AP Lite AutoPilot & OSD System
Installation & Operation Manual
Guilin Feiyu Technology Incorporated Company
Addr : 3rd Floor,B,Guilin Electric Valley ,Innovation Building,
Information Industry Park,Chao Yang Road,
Qi Xing District,Guilin 541004,China
Website: www.feiyu-tech.com
Guilin Feiyu Technology Incorporated Company.
http://www.feiyu-tech.com uavservice@feiyu-tech.com
Table Of Content
User Agreement ............................................................................................................................................................ 1
1. FY-41AP Lite AutoPilot System Introduction .................................................................................................. 2
2. Function Introduction .......................................................................................................................................... 3
2.1 FY-41AP Lite Single Module Function .................................................................................................. 3
2.2 FY-41AP Lite With GPS Function ............................................................................................................ 4
2.3 OSD Video Overlay System Function ................................................................................................... 5
2.4 FY-41AP Lite Can Be Connected To A Data Link .............................................................................. 5
3. FY-41AP Lite Configuration ............................................................................................................................... 5
4. FY-41AP Lite Connection Summary ................................................................................................................ 7
5. S1~S8 Servo Interface Connection Instructions ........................................................................................ 8
6. Connection Introduction .................................................................................................................................... 8
7. Main Module Installation ................................................................................................................................ 10
7.1 FY-41AP Lite Module Installation ....................................................................................................... 10
7.2 GPS Module Install ................................................................................................................................... 11
7.3 Power Manager Module Install ........................................................................................................... 11
7.4 Airspeed Sensor Module Install .......................................................................................................... 11
7.5 Remote Control Setting: SW1&SW2.................................................................................................. 12
7.6 Gyroscope Reset ....................................................................................................................................... 12
7.7 FY-41AP Lite Indicator Light Instruction .......................................................................................... 13
7.8. OSD Interface Instruction ..................................................................................................................... 14
8. FY-41AP Lite Setting.......................................................................................................................................... 15
9. FY-41AP Lite First Flight Test Checklist .......................................................................................................... 27
10. Other Functions And Settings ..................................................................................................................... 29
10.1 Switch ( SW2 ) Function Setting ................................................................................................... 29
10.2 RC Max Distance Setting ................................................................................................................. 29
10.3 Circling Radius Setting ..................................................................................................................... 30
10.4 The Altitude Of Return To Launch Instructions ....................................................................... 30
10.5 FAIL-SAFE Setting .............................................................................................................................. 31
10.6 Fixed Altitude & Heading Lock Mode Instruction ................................................................. 31
10.7 3D Mode Instruction ........................................................................................................................ 32
10.8 Auto Circling Mode Instruction .................................................................................................... 32
10.9 Link Mode (RC Receiver Control Mode/Data Radio Control Mode) ............................... 32
Appendix ...................................................................................................................................................................... 33
Appendix : Flight Area Map Making ..................................................................................................... 33
Guilin Feiyu Technology Incorporated Company.
http://www.feiyu-tech.com uavservice@feiyu-tech.com
Page 1
Dear Customer :
Thank you for choosing FY-41AP Lite as your autopilot system. Please read this
manual carefully to ensure correct installation & operation.
User Agreement
The use of FY-41AP Lite is prohibited for any illegal intentions and purposes. The
user will be fully responsible for the use of this product and FY-Tech will not be held liable
it's misuse either in its original or altered state by the customer (including the direct,
indirect, or third party losses caused by a faulty plane or plane crash).
Please read this manual carefully before using this product. If you have any questions,
do freely contact us and we will attempt to provide you with a satisfactory clarification
and/or resolution should it be required. The products’ functions maybe changed only by
firmware upgrades which is available from our website from time-to-time. Please do check
our website for available firmware upgrades. The company reserves the right to alter the
contents of the product firmware.
This agreement takes immediate effect upon the purchase of the product.
Attention
The installation and use of this device require some skill and knowledge in flying
remote controlled aircraft.
If you are a complete beginner & have never flown one before, we do not recommend
you install this device on your own. Please find an experienced RC pilot who may provide
you with the basic knowledge required to use this device successfully.
If you are already an experienced flyer, you will find the FY-41AP Lite installation to be
easy & logical. Follow this manual & you won’t go wrong.
If you need further technical support, contact us at: service@feiyu-tech.com
Guilin Feiyu Technology Incorporated Company.
http://www.feiyu-tech.com uavservice@feiyu-tech.com
Page 2
1. FY-41AP Lite AutoPilot System Introduction
FY-41AP Lite Module
FY-41AP Lite is an inertial attitude measurement instrument used for FPV flight on
fixed-wing aircrafts. It has an integrated OSD video overlay system that presents critical
flight information such as power management, airspeed, altitude, and flight direction via its
sensors and GPS module, allowing for a clear visual flight while ensuring key information
is within sight.
The new FY-41AP Lite with its enhanced altitude control and GPS module, can now
realize improved pinpoint inertial navigation and automatic piloting.
Flight stabilization is achieved via an integrated 3 axis gyro, 3 axis accelerometer,
and a barometric pressure sensor. This enables the module to accurately measure flight
attitude, earth azimuth & relative altitude to achieve:
Extremely stable conventional flight pattern
Stabilized 3D flight
Automatically return to home (RTL)
Fixed altitude flight
Heading lock flight
Auto circling over a fixed GPS location.
GPS Module
GPS module enables the FY-41AP Lite to calculate the flight course & sense the
exact location of the aircraft. GPS data allows aircraft return to home (RTL), auto circle,
and control straight line navigation.
Airspeed Module
The FY-41AP Lite can be connect to the airspeed sensor (When don’t connect the
airspeed sensor, the FY-41AP Lite also can work normally).The airspeed sensor can
measure the airspeed of the aircraft. Compared to the GPS speed the airspeed have the
characteristics which is small delay and small affected by the wind. This characteristics
can achieve the effective control of the throttle, improve the efficiency of flight and flight
safety
OSD System
FY-41AP Lite has integrated OSD hardware with optimizing display interface. Critical
flight parameters are displayed like altitude, speed, direction, flying voltage and amp draw,
and most display parameter outlay can be changed via RC control.
Guilin Feiyu Technology Incorporated Company.
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Page 3
Power Manager Module
FY-41AP Lite can connect power manager module which is integrated with current
sensor module and Voltage-Regulating module. Current Sensor is used to check voltage,
Amp draw. The integrated Voltage-Regulating module provides stable +12V to FPV video
camera and video transmitter.
Altitude Control
Altitude control is achieved using a high sensitivity barometric sensor which
measures relative height. Altitude is fixed via elevator servo control and throttle
management.
Heading Control
Under the condition of without GPS module, heading control is achieved by the
inertial device. Both the aileron & rudder servo is used to control flight heading. But it will t
influence of wind deviation from the original route.
Under the condition of connect to the GPS module, GPS data is used to automatically
correct heading even in windy conditions.
Speed Control
Under the condition of without airspeed sensor but connect to the GPS module, GPS
module provide the speed and altitude information for the throttle control to achieve the
control of the speed.
When connect to the airspeed sensor, the airspeed information will available and use
for controlling the throttle, and the speed control is more reliable and accurate.
2. Function Introduction
2.1 FY-41AP Lite Single Module Function
Note: Not use the GPS module
● Activated Mode In this mode, the FY-41AP Lite auto stabilization is turned off.
The aircraft is completely under pilot control.
● Stabilized Mode Level flight is automatically maintained, making flight simple,
especially for beginners. If a pilot feels the plane is out of control, simply reduce input
control and the plane will automatically recover level flight.
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Page 4
● 3D Mode If no input is given by the pilot (all sticks in the middle position), 3D
mode will lock the current aircraft attitude. Therefore the aircraft can be easily
maneuvered to complete a variety of 3D flight with added stability & smoothness.
● Fixed altitude & Heading lock Mode This mode maintains aircraft flight course
& holds the altitude on activation.The system automatically corrects flight course deviation
& maintains straight-line flight.
● Auto Circling Mode On activation, the plane will maintain altitude and flight speed,
while initiating a counterclockwise circle, but this is not hovering around a fixed point, is
likely to be blown away from the original place of circle.
2.2 FY-41AP Lite With GPS Function
● Fixed altitude & Heading lock Mode This mode maintains aircraft flight course
& holds the altitude on activation. By using GPS data, the system automatically corrects
flight course deviation & maintains straight-line flight.
● Auto Return To Launch Mode (RTL) Upon activation of this Mode, the aircraft
will automatically return to the Home point, maintaining is current altitude. Upon reaching
the Home point, it will initiate auto circling.
After the aircraft back to the target point ,if the altitude greater than 100 meters , the
aircraft will down to 100 meters while circling. For the FY-41AP Lite , there is 50 meters
protection altitude for return home .If the altitude below 50 meters when activate into RTL,
the aircraft will climb to 50 meters while return.
● Auto Circling Mode On activation, the plane will maintain altitude and flight speed,
while initiating a clockwise circle. The centre of the circle is the point of activation at a
default radius of 80 meters (can be changed via FY GCS).
● GCS software By using a field computer and connecting the FY41AP Lite to an
FY Data Radio via the UART port, you can set the FY41AP Lite flight parameters, monitor
the flight progress & record / reply the flight via the FYGCS software. For more information,
please refer to the FY Data Radio manual.
NOTE:
1 ) In the navigation mode, the remote control lever (AIL ,ELE,THR,RUD) no longer can
control the aircraft except Fixed altitude & Heading lock Mode.
2 ) In Fixed altitude & Heading lock Mode, operation the throttle lever is invalid, in this
mode operation AIL,ELE,RUD lever are effective.
3) In the navigation mode, when the flight altitude below a certain altitude, the flight
speed below a certain speed, the throttle will automatically shut down.
Guilin Feiyu Technology Incorporated Company.
http://www.feiyu-tech.com uavservice@feiyu-tech.com
Page 5
2.3 OSD Video Overlay System Function
First Person View (FPV) FY-41AP Lite has an integrated OSD video overlay
system that presents critical flight information on the video for easy enjoy FPV, at the
same time, Auto stable, Fixed altitude & Heading lock, Auto Return To Home function will
make FPV operation more easy.
2.4 FY-41AP Lite Can Be Connected To A Data Link
Connecting to a Data Link can increase flight distance. Additionally, when used with
FY-GCS (Ground Control Station) system you can view telemetry data of flight conditions
and more effectively, you are able to make changes real-time including change parameter,
flight attitude etc
3. FY-41AP Lite Configuration
NO
.
Module
Introduction
1
FY-41AP Lite module
Size: 61mm*39mm*14mm
Weight: 20g
2
GPS receiver module
Size: 32mm * 32mm * 13.5mm
Weight: 24g
3
Integrated with Current Sensor and regulate voltage
module to provide stable +5V to FY-41AP Lite and
provide stable +12V to FPV video camera and
transmitter at the same time.
Size: 50mm*24mm*18mm
Weight: 35g
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Page 6
4
To measure airspeed
Size: 64.5mm * 13.5mm * 13.5mm
Weight: 9g
5
For FY-41AP Lite firmware upgrade
For connect data link to PC
For connect remote adapter to PC
6
For connect FY-41AP Lite to remote receiver
7
For connect video camera or video transmitter
8
Can weld to power manager module for connect the
batter and ESC
9
GPS extension wire
Guilin Feiyu Technology Incorporated Company.
http://www.feiyu-tech.com uavservice@feiyu-tech.com
Page 7
4. FY-41AP Lite Connection Summary
Z
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http://www.feiyu-tech.com uavservice@feiyu-tech.com
Page 8
5. S1~S8 Servo Interface Connection
Instructions
No.
Type
Traditional
Flying wing
V tail
Airship
S1
Aileron servo 1
Aileron &Elevator
mix control servo 1
Aileron servo 1
Not use
S2
Elevator servo
Aileron &Elevator
mix control servo 2
Elevator &Rudder
mix control servo 1
Elevator servo
S3
Throttle
servo/ESC
Throttle servo/ESC
Throttle servo/ESC
Throttle
servo/ESC
S4
Rudder servo
Not use
Elevator &Rudder
mix control servo 2
Rudder Servo
S5
Aileron servo 2
Not use
Aileron servo 2
Not use
S6
Not use
Not use
Not use
Not use
S7
Not use
Not use
Not use
Not use
S8
Not use
Not use
Not use
Not use
NOTE: When using remote adapter, S7 and S8 output the channel 7 and channel 8
signal of the RC receiver directly.
6. Connection Introduction
Connection Picture
Introduction
S1～S8 servo wiring connection
Pay attention to the signal wiring
sequence
Power manager wiring
GPS module wiring
Guilin Feiyu Technology Incorporated Company.
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Page 9
2×4P RC receiver wiring
For FY-41AP Lite
Black Red White —— AIL
Orange —— ELE Green —— THR
Yellow —— RUD Brown —— CH5
Blue —— CH6
Airspeed sensor wiring
Video camera wiring
Yellow-video signal
Red--+12V
Black--GND
Video transmitter wiring
Yellow-video signal
Red--+12V
Black--GND
Connect the USB data cable to
UART1 port to firmware upgrade for
FY-41AP Lite control module
Connect the USB data cable to
UART2 port to firmware upgrade for
OSD module
Data link wire
Connect the FY-602 data radio to
UART1 port
Vibration absorbing pads
(dampers),use for FY-41AP Lite
vibration damping installation.
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