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Guilin Feiyu Electronic Technology Co., Ltd

 

Guilin Feiyu Electronic Technology Co., Ltd            http://www.feiyudz.cn            E-mail: [email protected]              Page 10

 

not start  motors. You  have to execute Combination  Stick Commands  (CSC)  in  stabilized 
mode

(Can not in Hovering mode or Auto Return To Launch Mode(RTH))

 to start motors. 

Meet the following conditions: 

 

 

Put Throttle stick to the lowest position   

 

Put Aileron stick to any endpoint position 

 

Put Elevator stick to any endpoint position 

 

Put Rudder stick to any endpoint position 

 
Combination Stick Commands only need to execute for the first time power on and 

take  off  ,  the  purpose  is  to  prevent  motor  from  wrong  start,  after  execute  Combination 
Stick  Commands  the  motor  will  run  at  Idle  Speed,  now  the  throttle  stick  is  at  minimum 
position, at this time if you want to stop the motor running, you need to push throttle stick 
to idle speed  above, and  then put it to the  minimum  position, idle speed  value  default  is 

1170  us,  the  throttle  stick  below  20%.  Take  off  again  you  do’t  need  to  the  execute 
Combination Stick Commands when you (If you do not have power off and power on). 

10.

 

Gyroscope Reset: 

The Red LED flashes continuously even when the DoS remains stationary,that means 

you need to do the Gyro reset.The Gyro reset must be done before the Combination Stick 
Commands,after execute Combination Stick Commands you can not do the Gyro reset. 

Initialization / Reset Process: 

1.Power on DOS and keep stationary. 
2.Switch to stabilized mode. 
3.On SW1,switch  stabilized mode to hovering mode 6 times, time interval has to be less 
than 3 seconds as follows: 
stabilized  mode→hovering  mode  →stabilized  mode  →hovering  mode  →stabilized 
mode→hovering mode →stabilized mode →hovering mode →stabilized mode →hovering 
mode →stabilized mode →hovering mode. 
4,DoS indicator will turn white

 

about one second. 

5,After white LED turns off, the re-setting / initialization is completed. 
 

11.

 

Calibrate the Compass 

Ferromagnetic substances placed on  aircraft or around its working environment will 

affect the reading of earth magnetic for digital compass, it also reduces the accuracy of the 
aircraft control, or even reads incorrect heading. Calibration will eliminate such influences, 
and ensure DoS system performs well in a non-ideal magnetic environment.   

 

Please do the calibrate if the following circumstances occur: 
 
(1)The first time you install DoS on your aircraft.   
(2)When the aircraft mechanical setup is changed 
(3) If the DoS module is re-positioned. 
(4)  If  electronic  devices  are  added/removed/  re-positioned  (Main  Controller,  servos, 
batteries, etc). 

Summary of Contents for DoS

Page 1: ...rately 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 off...

Page 2: ...unction 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 fly...

Page 3: ...PS and UART 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 No 1 2 3 4 RC receiver interface SW1 RUD Servo THR Servo ELE Servo GND Power 5V AIL Servo SW2 position 1 2 3 servo signal output 900 1200US 1200 1800US 1800 2100US function stabilized mode Hovering Mode Auto ...

Page 4: ...s as follows 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...

Page 5: ...rvos 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...

Page 6: ... unable to keep the flight altitude and position You can use your own DIY shock absorbing devices to do the shock absorbing but we recommend using suspending damping installation especially use DoS vibration absorbing mount which product by FeiYu Tech it can meet the requirements of most of the conditions and in addition you need to try to reduce the vibration of the motors and oars Installtion po...

Page 7: ... recommed using suspending damping installation especially use DoS vibration absorbing mount which product by FeiYu Tech You can find purchase method from FeiYu official website www feiyudz cn Installation process as follows You need a allen driver 1 Use screws to install the four support columns on the baseboard 2 Stick the solid foam pads dampers to the cover board four interior Angle position ...

Page 8: ... 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 4 Use screws to fix the cover board to the four support columns 5 Stick the circular ring foam pads dampers to the four rounded corners on the baseboard vibration absorbing mount Then fi...

Page 9: ...els are required to control the DoS Flight Modes a 3 position switch SW1 d the other 3 position switch SW2 is not used in firmware V2 0 so you do not need to connect Wire color Receive channel White bundled with red black aileron Channel 1 orange elevator Channel 2 green throttle Channel 3 yellow rudder Channel 4 brown SW 1 Any free channel controlled by A 3 way switch or dial knob Channel 5 blue ...

Page 10: ... DoS remains stationary that means you need to do the Gyro reset The Gyro reset must be done before the Combination Stick Commands after execute Combination Stick Commands you can not do the Gyro reset Initialization Reset Process 1 Power on DOS and keep stationary 2 Switch to stabilized mode 3 On SW1 switch stabilized mode to hovering mode 6 times time interval has to be less than 3 seconds as fo...

Page 11: ...t satisfies the requirement of flight but after that you can wait over 30 seconds to let the GPS positioning is more stable and accurate 12 Other considerations 1 Please as far as possible to maintain the current altitude when switch Attitude Stabilized Mode to Hovering Mode In Hovering Mode DoS can automatic control flight altitude Climbing and descending rate is directly related to the throttle ...

Page 12: ...om Page 12 sticks the aircraft will hover to a new position 13 DoS Setting Software and installation and debugging instructions connection mode 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 USB Cable ...

Page 13: ...setting software otherwise will cause the aircraft abnormal condition Motor Mixer The following pictures display the rotation direction and serial number of each motor each ESC should be connected to the DoS S1 S8 interface Pay attention that once you choosed the control type the corresponding position motor rotate direction have to be completely the same as the picture If the motor rotate directi...

Page 14: ...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 Control Gain Control gain use for stabilizing the flight attitude To the gains of Pitch and Roll if...

Page 15: ...nough 1 The multi rotor can lock the altitude when the throttle stick is at center position 2 The change of altitude is small during the flight along a route You can increase the gain slowly 10 each time until the vibration emerges along the vertical direction or the reaction of throttle stick is too sensitive then decrease 20 of the gain Now it is a suitable Vertical gain Control I This value gen...

Page 16: ...situation disappear If the camera gimbal go back to Neutral is too soft As a result you should slowly increase 10 20 each time corresponding direction Gimbal Gain 3 Gimbal Neutral The default Gimbal Neutral is 1520 Power on and put the camera gimbal into level position observe the servos position If the servos is not in the Neutral value please through adjust the to corresponding servos Gimbal Neu...

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