FeiYu Tech FY-DOS User Manual

Guilin Feiyu Electronic Technology Co., Ltd

FY-DoS for multi-rotors control manual

Feiyu Tech	Installation & Operation	Multi-rotor firmware above V2.10

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: [e-mail]

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 V2.10 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, pitch, roll, 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,non-released will equivalent of Attitude Stabilized Mode.

Guilin Feiyu Electronic Technology Co., Ltd

http://www.feiyudz.cn

E-mail: [e-mail]

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Guilin Feiyu Electronic Technology Co., Ltd

 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, pitch, roll, yaw and altitude control method is the same as Hovering Mode. Pitch, roll sticks released will automatically fly the aircraft back to the take-off point, Maximum return to home point speed: 5.5m/s.

 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

 DoS can connect with the Hornet-OSD and the Data Radio

DoS has one UART interface for connecting the FY-data radio and the OSD module. It can realize the following function by combing them.

First Person View (FPV): Can be connected to the Hornet - OSD, the flight data overlay 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, Hovering and Auto Return To Launch.

Real time telemetry-real time monitor: Real time telemetry-real time monitor the flying state, using the Data Radio to lengthen the remote control distance.

For more information, please refer to the FY-OSD and FY Data Radio manual.

1. DoS standard configuration

Standard configuration

●DoS control module *1;

●RC receiver connecting wires * 1; ●USB cable *1;

●Velcro double sided tape * 2;

Optional accessory

●DoS vibration absorbing mount *1;

●GPS module *1; ●Hornet OSD module; ●Data Radio; ●Remote Adaptor;

2. Technical Specification:

DoS module
Input voltage	: 4.0 ~ 6.0 Volt;
Current	: 50mA (5V);
Size	: 47 x 30 x 11 mm;
Weight (excluding wires)	: 25g;
Temperature range	: -25 °C ~ +70 °C;
Control frequency	:400HZ ;
Maximum rate of rotation	: ≤ 2000 °/s.
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3. Interface specifications:

 Remote receiver input interface

No.	1		2	3	4
RC		SW1	RUD	THR	ELE
receiver			Servo	Servo	Servo
interface
		GND	Power	AIL	SW2
			+5V	Servo

SW1 default setting state

position	1	2	3
servo signal	900 1200US	1200~1800US	1800~2100US
output
function	stabilized	Hovering	Auto Return
	mode	Mode	To Launch
			Mode

Attention: SW1 can be used to switch DoS flight modes by any 3-position switch.SW2 is unnecessary in firmware V2.1.

 GPS and UART interface

No.

1

2

3

4

GND

Power

TX

RX

GPS interface

+5V

0

0

Data radio

GND

Power

TX

RX

interface/para

meter setting

+5V

1

1

interface

GPS module interface

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

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E-mail: [e-mail]

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This port is use for GPS Receiver. The GPS data protocol is standard NEMA0183.

Hornet - OSD (V1.6) and DoS connection graph:

You need a 4p Y line, the Hornet - OSD data line and GPS module connected to the

DoS’s GPS interface. Connection diagram is as follows:

GPS module

OSD data line	Hornet OSD module
	(V1.16)

Physical connection diagram:

Put the 4P Y line inserted into DoS’s GPS port

Data Radio interface

The UART pin interfaces consist of: GND, power 5V , TX1, RX1. The characteristics as follows:

Baud Rate: 19200 Data bits: 8

Stop Bits: 1

Parity: None

Interface Features: TTL level

This pin interfaces connects to the Data Radio, PC computer serial port or OSD module. You can set DoS control parameters and upgrade DoS firmware through this interface. For the firmware upgrade,please refer to the firmware update operation manul.

Guilin Feiyu Electronic Technology Co., Ltd

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E-mail: [e-mail]

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Guilin Feiyu Electronic Technology Co., Ltd

 ESC output interface

		S8	S7 S6 S5		S4 S3 S2 S1
No.	S8	S7	S6		S5	S4	S3	S2	S1
Servo	M8	M7	M6		M5	M4	M3	M2	M1
Output
	Power	Power	Power		Power	Power	Power	Power	Power
Interfa	+5V	+5V	+5V		+5V	+5V	+5V	+5V	+5V
ce	GND	GND	GND		GND	GND	GND	GND	GND

DoS’s S1 ~ S8 ports are connected separately to ESC M1 ~ M8.

Typically 1020us is lower limit, 1520us is neutral and 2020us is upper limit, frequency is 400Hz.

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.

(2)If you use DoS to control Octocopter aircraft,S7 and S8 ports will not output Camera Gimbal control signal any more.

5.Power Supply:

●DoS input voltage is 4.0 ~ 6.0 V, you can use a stabilized voltage supply ,or directly use ESC’s +5 V power supply, most of the ESC power supply can meet the requirements;

●DoS and the RC receiver use the same power supply via the RC receiver connection wiring.

●VERY IMPORTANT: Only one BEC power source should be used. If all four ESCs have internal BEC, choose only one to supply power. Disconnect the red wire (positive) of the other ESCs,but reserve the GND and Signal wirings.

Guilin Feiyu Electronic Technology Co., Ltd

http://www.feiyudz.cn

E-mail: [e-mail]

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