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Guilin Feiyu Electronic Technology Co., Ltd.

Guilin Feiyu Electronic Technology Co., Ltd http://www.feiyu-tech.com service@feiyu-tech.com

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FY-DOS Manual For Multi-rotors Control

Installation & Operation Multi-rotor firmware above V2.20

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

airplane model.

 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: service@feiyu-tech.com

DOS Module

DOS is an Attitude Flight Stabilization System (AFSS) and autopilot system.Now can be used for

automated stabilization of fixed wing aircrafts,and after upgrade firmware can be used for other aircraft and

equipment control (For more details of DOS,please refer to the latest firmware and the instructions).

DOS has integrated three-axis gyro ,three-axis accelerometer,three axis magnetometer and barometric

pressure sensor. DOS can accurately measure flight attitude, the earth azimuth and through the barometer to

measure relative altitude. This manual mainly introduces DOS firmware for Multi-rotor flight system.

The firmware for Multi-rotor flight system above V2.20 can realize the following functions:( We will

continue updating new firmware to improve performance and update functions, please pay attention to the

latest news FeiYu official website (www.feiyudz.cn) posted.)

 Attitude Stabilized Mode

DOS can auto stabilize the aircraft flight attitude in this mode, pitch and roll stick center position for

0 °attitude,its endpoint is 45 ° , pitch and roll stick can linear control the flight attitude, maximum angular

velocity is 150 ° / s. Yaw stick in the center position will lock current course , its endpoint corresponding

maximum rotation rate 135 ° per second, yaw stick can linear control the aircraft rotation rate. Throttle stick

direct control aircraft climb and decline, climbing and declining rate is directly related to the throttle.

 Hovering Mode

The GPS Module must be connected to the DOS with at least 5 GPS satellites detected.In this Mode, yaw

control method is the same as Attitude Stabilized Mode.DOS can auto control flight altitude.Climbing and

descending rate is directly related to the throttle, when the throttle stick is in the center position,DOS auto locks

the altitude, in maximum means climb rate is 3 m/s, in minimum means decline rate is 1.5 m/s.Throttle stick

can linear control the aircraft climb and decline rate.Pitch, roll sticks released will lock the position when GPS

signal is adequate. And non-releasing is stand for the aircraft movement speed in the corresponding axial

Summary of content (16 pages)

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Guilin Feiyu Electronic Technology Co., Ltd. FY-DOS Manual For Multi-rotors Control Installation & Operation Multi-rotor firmware above V2.20 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 airplane model.
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Guilin Feiyu Electronic Technology Co., Ltd. direction(Maximum 6m/s),not aircraft attitude.  Auto Return To Launch Mode(RTH) The GPS Module must be connected to the DOS with at least 5 GPS satellites detected. In this Mode, DOS is take over all the control, the RC aileron, elevator, throttle and rudder stick is no control function anymore.
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Guilin Feiyu Electronic Technology Co., Ltd. Current Size Weight (excluding wires) Temperature range Control frequency Maximum rate of rotation : 50mA (5V); : 47 x 30 x 11 mm; : 25g; : -25 °C ~ +70 °C; :400HZ ; : ≤ 2000 °/s. 3. Interface specifications  Remote receiver input interface No.
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Guilin Feiyu Electronic Technology Co., Ltd. The GPS pin interface consist of: GND, +5V , RX0. The characteristics are: Baud rate: 38400 Data bits: 8 Stop Bits: 1 Parity: None Interface Features: TTL level This port is use for GPS Receiver. The GPS data protocol is standard NEMA0183. Attention :DOS multi-rotor firmware version V2.2 and above is not support connect the Hornet-OSD. Please do not connect the Hornet-OSD to DOS GPS port.
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Guilin Feiyu Electronic Technology Co., Ltd. 4. Camera Gimbal Stabilization DOS multi-rotor firmware,when is used to control the aircraft under 6 axis, can simultaneously control two axis Camera Gimbal Stabilization.S7 port is connected Camera Gimbal’s roll servo,S8 port is connected Camera Gimbal’s pitch servo. Attention: (1) You must use 400Hz high-speed servos for Camera Gimbal, if you use normal servos for a long time, will cause the Camera Gimbal servos overheat.
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Guilin Feiyu Electronic Technology Co., Ltd. to initialize (Red light continuous flashing), only in that you will know the GPS positioning success or not. 7. Vibration damping installation Damping installation: Good damping installation is the basis of DOS can do normal work, also can decide whether DOS to maximize play flight performance or not, and make sure you have a great flight.
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Guilin Feiyu Electronic Technology Co., Ltd. Install effect chart If you are using an older DOS vibration absorbing mount, please follow these steps to install: (1) Use screws to install the four support columns on the baseboard; Guilin Feiyu Electronic Technology Co., Ltd http://www.feiyu-tech.com Page 7 service@feiyu-tech.
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Guilin Feiyu Electronic Technology Co., Ltd. (2) Stick the solid foam pads (dampers) to the cover board four interior Angle position; (3) Stick the cover board to the DOS upper surface (LOGO character surface); you can appropriately increase DOS module weight to improve the damping effect, you can stick copper sheet or other sheet metal which cannot be magnetized on the bottom of the DOS (Otherwise the magnetized sheet metal will disturb the internal magnetic field sensors).
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Guilin Feiyu Electronic Technology Co., Ltd. 8. RC receiver connection RC receiver and DOS connection wires is included in the DOS product. Attention: the wires is arranged by the colors. 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 ).
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Guilin Feiyu Electronic Technology Co., Ltd.  Put Aileron stick to any endpoint position  Put Elevator stick to any endpoint position  Put Rudder stick to any endpoint position Please slowly push the throttle and according to the picture “Motor Mixer” shows to check the motor rotation direction is right or not. Attention: (1) Altitude Stabilized Mode and Hovering Mode both can execute Combination Stick Commands (CSC) to start the motor.
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Guilin Feiyu Electronic Technology Co., Ltd. 11. Calibrate the Compass DOS has a built-in magnetic field sensor which can measure the earth’s orientation position, providing the basis of the hover function. If the magnetic field is disturbed, the hovering mode will draw a circle motion and be unable to hover.
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Guilin Feiyu Electronic Technology Co., Ltd. if you control your aircraft descend to the ground in hovering mode may cause the aircraft altitude volatility which caused by the ground air. 2) Without the GPS module, switching to Hovering Mode or Auto Return to Launch Mode will automatic bring you into Fixed Altitude Flight Mode. (3)In hover mode, you can change the aircraft position by using the RC sticks. When you release the RC sticks, the aircraft will hover to a new position.
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Guilin Feiyu Electronic Technology Co., Ltd.  Install Setting: Guilin Feiyu Electronic Technology Co., Ltd http://www.feiyu-tech.com Page 13 service@feiyu-tech.
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Guilin Feiyu Electronic Technology Co., Ltd. DOS supports four install directions. The LOGO must be installed facing up. DOS has an arrow printed on the top face. Normally orientate the arrow towards the head of the craft. If adjust the installation direction, you have to set it via the setting software, otherwise will cause the aircraft abnormal condition.
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Guilin Feiyu Electronic Technology Co., Ltd.  Control parameters adjustment  RC Sensitivity RC Sensitivity determine the reaction speed of attitude from command stick, the bigger the value the quicker the reaction. Increase it for sharper and quicker leveling action after command stick released. Unstable shaking flying and the control feeling will be stiffness and rigid if the value is too high; and sluggish leveling action and slow braking if too small.
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Guilin Feiyu Electronic Technology Co., Ltd.  Navigation control Gain Navigation control Gain is the control parameters use for control hovering point. Control P : please increase the basic gain slowly (2-3 each time)until the vibration emerges in the hovering point. Then decrease the gain a little until vibration just disappears. Now the gain is perfect. Control I : This value generally do not need to adjust.