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Guilin Feiyu Electronic Technology Co., Ltd

 

Guilin Feiyu Electronic Technology Co., Ltd            http://www.feiyudz.cn            E-mail: service@feiyu-tech.com              Page 6

 

6.

 

Indicator light instruction: 

NO. 

operating mode 

LED 

GPS location 

fixed 

(normal) 

GPS location fixed 

(good) 

GPS location fixed   

(very good) 

stabilized mode 

        Single flash               

Single flash 

Double flash 

Triple flash 

Hovering Mode 

Double flash 

Single flash 

Double flash 

Triple flash 

Auto Return To 

Launch Mode 

              Triple 

flash   

Single flash 

Double flash 

Triple flash 

Gyro needs Reset 

or is moving 

                               

Red light 

continuous flash 

 

During the gyro 

reset 

                    Flash 

white light for 

almost one second 

too much 

vibration 

                                               

red light  stay  on 

solid 

 
Attention:

 

Vibration LED takes precedence over GPS positioning LED,you must make sure that 

the  gyro  is  not  need  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. Otherwise may cause serious flight accidents, for example: flight 
jitter,  flight  attitude  gradually  deviation  and  tilt  from  the  balance  position,  and  Hovering 
mode  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  position:

Each  modules  install  to  a  suitable  position  is  conducive  to  further 

enhance the  performance of  Hovering  mode. DoS module  installation position  should be 
as far as possible to close to the center of the aircraft, the aim is to reduce the disturbance 
to the internal IMU position sensoring when the aircraft tilt or rotate. In addition also you 
have to consider a very important factor, that is as far as possible to reduce the interference 
to the  DoS internal magnetic  sensor  which  caused by  installation position. There will be 
caused  interference  to  magnetic  sensor,such  as  surroundings  have  strong  current,  motor 
rotation,  battery,  etc.  We  need  to  do  is  to  give  full  consideration  of  these  two  factors, 
compromise to select a suitable position for install it. GPS module should be placed as far 
as possible to the center position,that can reduce the interference to GPS data when it level 
rotating. Also you can put the GPS module to a high place use a stent, the practice shows 
that can effectively reduce the interference to GPS signals which caused by other devices, 

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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