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FY-DOS Manual For Fix-wing Control
Dear Customer:
Thank you for choosing DOS as your autopilot system. Please read this manual carefully before
using the system to ensure proper use and operation.
The installation and use of this device require some skill and knowledge in flying remote controlled
fixed wing aircraft.
If you are a complete beginner and have never flown one before, we do not recommend you install
this device on your own.
Please find assistance from 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 DOS installation to be easy and logical. Just
follow this manual and you won't go wrong.
If you need any technical support you can send e-mail directly to:
1. Operating principle
Attitude Flight Stabilization System (AFSS)
DOS module
DOS is an inertial attitude measurement instrument. Now version V1.1 used for automated stabilization of
fixed wing model aircrafts,but after upgrade firmware can be used for other aircraft and equipment control (For
more details of DOS,please refer to the latest firmware and instrctions)
DOS has integrated three-axis gyro ,three-axis accelerometer,three axis magnetometer and barometric
pressure sensor. DOS can accurately measuring flight attitude, the earth azimuth and through the barometer to
measure relative altitude. Through the sensor measurement data combined with attitude control can realize
the Stabilized Mode, 3D Mode, Return To Launch Mode, Fixed altitude and Heading lock flight Mode, Auto
Circling Mode and so on.
GPS module
GPS module enables the DOS to calculate the flight course and exact location of the aircraft. DOS has
three navigation mode :Return To Launch, Auto Circling and Heading lock,You can activate any of navigation
modes after connecting GPS.
Altitude control
DOS use the barometer to measure relative height, through the elevator servo and throttle control to
realize the flying altitude control.
Heading control
Without GPS module,DOS through the three axis magnetometer to measure the heading angle,use the
aileron servo and rudder servo to control flying heading. But will be affected by the wind then deviate from the
original route.
Guilin Feiyu Electronic Technology Co., Ltd
Guilin Feiyu Electronic Technology Co., Ltd.
Installation & Operation
http://www.feiyu-tech.com
Page 1
service@feiyu-tech.com
service@feiyu-tech.com
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Table of Contents
Summary of Contents for Feiyu FY-DOS
- Page 1 Guilin Feiyu Electronic Technology Co., Ltd. FY-DOS Manual For Fix-wing Control Installation & Operation Dear Customer: Thank you for choosing DOS as your autopilot system. Please read this manual carefully before using the system to ensure proper use and operation.
- Page 2 Guilin Feiyu Electronic Technology Co., Ltd. After connecting the GPS,DOS receives position and course information to keep straight flying.And DOS will automatically correct the deviation cause by crosswind. Speed control The DOS has some control over the throttle channel after connect GPS module.When flying in Navigation mode,please ensure the throttle stick control signal is enough.Otherwise you aircraft maybe stall.
- Page 3 Guilin Feiyu Electronic Technology Co., Ltd. ● First Person View (FPV) – Can be connected to the Hornet - OSD, the flight data stack to video output,and through the vodeo transmission system to send back, let you enjoy the fun of FPV. And it will be easier to operate FPV with the functions of automatic balance, Fixed altitude and Heading lock flight and Auto Return To Launch.
- Page 4 Guilin Feiyu Electronic Technology Co., Ltd. The DOS can be installed in the following aircraft 1), Normal / Traditional fixed-wing planes; 2), Delta-winged plane with rudder; 3), Delta-winged plane without rudder; 4), Plane without aileron; 5), V-tail plane with aileron;...
- Page 5 Guilin Feiyu Electronic Technology Co., Ltd. GPS module interface The GPS pin interface consist of: GND, +3V , RX0. The characteristics are: Baud rate: 38400 Data bits: 8 Stop Bits: 1 Parity: None Interface Features: TTL level Connect the above to the GPS Receiver. The GPS data protocol is a standard NEMA0183 and the statement must be $ GPRMC, $ GPGGA.
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Page 6: Power Supply
Guilin Feiyu Electronic Technology Co., Ltd. S3: connection ESC or throttle servo. S4: connection rudder servo. S5: connection aileron servo 2 (without setting mix control ,same signal as S1) S6: not used S7:When use Remote Adaptor, CH7 receiver output channel (detail please reference Remote Adaptor and... - Page 7 Guilin Feiyu Electronic Technology Co., Ltd. a) DOS requires a minimum of 6-channel RC receiver. b) 4 Receiver channels are used for aileron (channel 1), elevator (channel 2) ，throttle (channel 3) and rudder (channel 4) signal output. Connect these 4 receiver output signals to the DOS with the supplied wires (pay attention to the color of each channel ).
- Page 8 Guilin Feiyu Electronic Technology Co., Ltd. 9. Connection of DOS Optional connection RC receiver Data Radio USB Cable Optional connection AIL OUT RUD OUT ELE OUT THR OUT Motor Battery DOS indicator light instruction DOS with three colors LED which can send out red, blue, green light. Also yellow, white, purple and other colors light through the combination.
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Page 9: Vibration Damping
Guilin Feiyu Electronic Technology Co., Ltd. GPS location fixed Gyro needs Reset Operating mode (4 satellites or or is moving more) Manual mode Stabilized mode 3D mode Auto Return To Launch Mode Fixed altitude and Heading lock flight Mode Auto Circling... -
Page 10: Switch Channel Setting
Guilin Feiyu Electronic Technology Co., Ltd. (4) If instead the red LED lights up bright and stays ON solid, then the vibration dampening is not enough. You will need reduce the level of vibration on your aircraft, add additional dampening support or change the installation location. - Page 11 Guilin Feiyu Electronic Technology Co., Ltd. Default installation Orientation: DOS’s position a) The DOS has an arrow printed on the top of it. Orientate the arrow towards the front of the craft (i.e. direction of flight). b) When installing, please keep the DOS horizontal and as close as possible to the "Centre of gravity" (COG) of the aircraft.（as the following diagram.）...
- Page 12 Guilin Feiyu Electronic Technology Co., Ltd. Servo surface reverse setting Servo surface reverse setting through the remote control after connecting the servo and RC receiver ,first test the remote control movement of servo surface.check whether remote control direction and the corresponding servo surface movement direction is consistent through the remote stick, if not consistent, need to adjust the servos surface reverse setting through the remote control .After adjusting every servo...
- Page 13 Guilin Feiyu Electronic Technology Co., Ltd. Elevator Movement In Auto Stabilization Mode Mode Elevator Nose Up moves up Nose Down Elevator moves down Down ● If the servo movement is incorrect, you can choose one of these ways to change the control movement as follows: 1)Adjust it by using DOS setup software through a USB cable.
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Page 14: Gyroscope Reset
Guilin Feiyu Electronic Technology Co., Ltd. E. ESC/ THROTTLE control surface movement check ESC/throttle can be set by DOS setting software or RC controller. First, adjust throttle‘s control movement on RC controller, roll throttle stick on lowest position, then on SW1, switch ABM to 3D mode 6 times, time interval has to be less than 3 seconds as follows: ABM→3DMode→ABM→3DMode→ABM→3DMode→ABM→3DMode→ABM→3D... - Page 15 Guilin Feiyu Electronic Technology Co., Ltd. First need install USB-TTL device driver, you can download it form our website: www.feiyudz.cn Software Interface Description:( Parameter in the following picture is default parameter) “Port” Connection columns Connect DOS to your PC, from ―my computer‖ –―device manager‖ –―Port‖...
- Page 16 Guilin Feiyu Electronic Technology Co., Ltd. “Gain”window It‘s for servo control movement Gain, Set Range:0-100,if gain number is getting higher, DOS will be getting more sensitivity. “Config” Configuration window Click ―Init GRYO‖ to gyro reset. And our software status bar will prompt initial success.
- Page 17 Guilin Feiyu Electronic Technology Co., Ltd. “Mix Setting” Choose the correct mixing mode,otherwise it will cause aircraft doesn‘t work normally. Taditional Flying wing V tail Models selection table: Aircraft Layout Mix Setting Remark 1.Normal Navigation control with aileron Traditional aircraft layout with 4.Normal...
- Page 18 Guilin Feiyu Electronic Technology Co., Ltd. “Switch Mode”SW2 function settings window: Usually, we need a 3-position switch (named as ―SW2‖) to switch the navigation mode, you can set different functions by software in sw2. Note: SW2 is priority than SW1, only when SW2 is in "Null" mode, then SW1 can work. so, we have to set a NULL, otherwise SW1 doesn‘t work.
- Page 19 Guilin Feiyu Electronic Technology Co., Ltd. Connection between DOS and Hornet-OSD Hornet-OSD can be used to connect to the DOS ‗s UART interface, or after upgrade Hornet-OSD to version V1.6, with a Y-type data cable ,you can connect Hornet-OSD and the GPS module to the DOS‘s GPS port to obtain high data refresh rate, make OSD data display more real-time.
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Page 20: "Fail-Safe"Setting
Guilin Feiyu Electronic Technology Co., Ltd. Influence of remote control servo movement and automatic control servo movement In any mode, RC can interfere with the aircraft's control, automatic control movement in the DOS is superimposed on the amount of manual control and output to the servos. So in ABM,you will feel the aircraft operate is less flexible, which is normal. - Page 21 Guilin Feiyu Electronic Technology Co., Ltd. DOS flight test According to the manual properly connected each module, pay attention to DOS module Vibration damping installation. Check the DOS installation direction. Connect the power, check SW1 switch, and SW2 switch, through the indicator light check each mode can normally switch or not.