FeiYu Tech FY31AP Installation & Operation Manual

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Guilin Feiyu Electronic Technology Co., Ltd
Rm. B305, Innovation Building, Information Industry Park, Chaoyang Road, Qixing District,
GuiLin, CN
www.feiyu-tech.com
Email: feiyutech@yahoo.cn
FY31AP
Autopilot System
Installation & Operation Guide
Rev 1: 24 February 2012

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Summary of Contents for FeiYu Tech FY31AP

  • Page 1 Rev 1: 24 February 2012 FY31AP Autopilot System Installation & Operation Guide Guilin Feiyu Electronic Technology Co., Ltd Rm. B305, Innovation Building, Information Industry Park, Chaoyang Road, Qixing District, GuiLin, CN www.feiyu-tech.com Email: feiyutech@yahoo.cn...
  • Page 2: Manual Update List

    Feiyu Electronics Company Manual Update list Revision Date Updated Topic updated page 28 November 2011 First Release of Manual 24 February 2012 Page 21 Error in FY31AP connection diagram corrected. P a g e...
  • Page 3: Table Of Contents

    UART Interface ..............................15 FY31AP Electrical Connection and Diagram....................16 Vibration damping ............................. 17 SW 1 and SW 2 : Switch Settings for FY31AP ....................18 Connection layout of FY31AP .......................... 21 FY31AP installation: Orientation, Position and level ................22 Adjustment Dials for ELE, AIL and RUD ......................
  • Page 4 Please find assistance from an experience 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 FY31AP installation to be • easy and logical. Just follow this manual and you won’t go wrong.
  • Page 5: Introduction

    Emergency Recovery - If you lose orientation release all control sticks, maintain throttle and switch ON the FY31AP. The unit will automatically send the correct signals to balance of the aircraft and regain level flight, giving you time to get your orientation and fly the plane back to safety.
  • Page 6: Gps Home Lock, Barometric Altitude And 8 Waypoint

    GPS Home Lock, Barometric Altitude and 8 Waypoint a) FY31AP control module incorporates an accurate barometric pressure sensor. At start up, when five (5) or more GPS satellites are detected, the FY31AP will note this as the Home position.
  • Page 7: Optional Upgrade With Hornet Osd And Data Radio

    Feiyu Electronics Company Optional Upgrades a) The FY31AP is a standalone system that can function as an autopilot on its own. b) However, adding the following optional upgrades allows you to expand the autopilot capabilities of the system. Hornet OSD – Allows you to display the autopilot •...
  • Page 8: Fy31Ap Package Content

    6. Any other configuration , please e-mail us for enquiry: service@feiyu-tech.com Remote control system requirement The FY31AP has been tested to work with the following RC systems: Robbe-Futaba PPM / PCM 1024 / PCM G3 mode, 2.4 GHz systems •...
  • Page 9: Fy31Ap Flight Modes

    You can activate any of the flight modes via a free Receiver channel and a 3-position switch on your computer radio connected to the SW 1 interface on the FY31AP. c) Mode 1: Deactivated Mode. In this mode, all control of the aircraft is by the pilot. The FY31AP does not participate in flight control.
  • Page 10: Stall Warning

    Feiyu Electronics Company STALL WARNING On its own, the FY31AP has no control over the throttle channel. Therefore, if your aircraft forward movement cannot compensate for the autopilot’s active altitude hold in RTH and Auto Circling, your aircraft will stall.
  • Page 11: Red Led Flashing & Gyroscope Re-Set

    (c) The Red LED flashes continuously, even when the FY31AP remains stationary. (d) If the Red LED light is on solid all the time even when the FY31AP is stationary, it means the gyroscope is faulty and that the unit needs to be sent back for repair.
  • Page 12: Flight Mode Indicator (Red Or Blue Light)

    Feiyu Electronics Company Flight Mode Indicator (Blue LED light) By observing the flight indicator, you can easily re-confirm your Flight Mode switch settings of your radio. Flight Mode Indicator: Autopilot Indicator: 11 | P a g e...
  • Page 13: Gps Status & Vibration Level Indicator

    Feiyu Electronics Company GPS status & vibration level indicator You can check the GPS lock status and vibration level by observing the Red LED. Red LED light: Too much Need to initialize GPS location fixed Status No GPS vibration Gyro (4 satellites) Red LED Continuous...
  • Page 14: Fy31Ap Interface

    Feiyu Electronics Company FY31AP Interface ARROW FORWARD (TOWARDS FLIGHT DIRECTION) Aileron Rudder sensitivity sensitivity knob knob Elevator sensitivity knob Function DIP Red LED: GPS status & vibration level Blue LED: Flight indicator mode & Autopilot indicator. Jumper installed during gyro initialization.
  • Page 15: Gps Receiver Connection

    Feiyu Electronics Company GPS Receiver Connection (Pin Interface “I-1, I-2, I-3, I-4”) GPS Receiver pin connection The FY31AP GPS pin consists of this interface: GND, 3.3V voltage, TX0, TX0. The parameters are: Data bits: 38400 • Interface Features: TTL level •...
  • Page 16: Gps - Satellite Signal Lost During Autonomous Flight

    Only if the GPS Data is available will the FY31AP perform its Autopilot Modes. • In case GPS signal is lost during autopilot flight, the FY31AP will keep its height and • maintain its last flight direction. After GPS signal is regained, the plane will resume its Autopilot Mode UART Interface(Position is “II-1, II-2, II-3, II-4”)
  • Page 17: Fy31Ap Electrical Connection And Diagram

    Channel 6 3-way switch or dial knob d) Note that you need 2 free Receiver channels to control the FY31AP Flight Modes and Autopilot Mode, using either a 3-position switch or your dial knobs. 16 | P a g e...
  • Page 18: Vibration Damping

    Ensure rigidity of your frame (no flexing with motor rotation). v) Use appropriate propeller length and pitch for the size of your aircraft. d) The FY31AP is supplied with the double-sided foam padding dampers. Please use them as shown below:...
  • Page 19: Sw 1 And Sw 2 : Switch Settings For Fy31Ap

    Feiyu Electronics Company SW 1 and SW 2 : Switch Settings for FY31AP SW-1 Flight Modes The FY31AP has 3 Flight modes controlled via SW-1. To select the modes, use a free Receiver channel controlled via a 3 way-switch: FY31AP FLIGHT MODES...
  • Page 20: Dip Switch Function

    ELE OUT THR OUT RUD OUT Elevator Rudder Aileron Servo Throttle Servo Servo Servo 2) FY31AP connection for flying wing aircraft: (with or without Rudder) AIL OUT ELE OUT THR OUT RUD OUT Differential Differential Throttle Rudder Servo Servo 1...
  • Page 21 Feiyu Electronics Company 5) FY31AP connection for traditional layout aircraft with no Aileron: AIL OUT ELE OUT THR OUT RUD OUT Elevator Rudder Servo Throttle servo Null Servo 6) Camera Gimbal Stabilization: AIL OUT ELE OUT THR OUT RUD OUT...
  • Page 22: Connection Layout Of Fy31Ap

    Electric ¤ ¥ ¦ ¦ § ¨ © Motor When installing the FY31AP, keep it as horizontal as possible to the aircraft axis and as close as possible to the Centre of Gravity (COG). 21 | P a g e...
  • Page 23: Fy31Ap Installation: Orientation, Position And Level

    Orientation, Position and level a) The FY31AP has an arrow printed on the top of it. Orientate the arrow towards the front of has an arrow printed on the top of it. Orientate the arrow towards the front of has an arrow printed on the top of it.
  • Page 24: Adjustment Dials For Ele, Ail And Rud

    The 3 dials control both gain & servo direction. servo direction. There are 3 adjustment dials on the FY31AP. Each dial controls There are 3 adjustment dials on the FY31AP. Each dial controls both gyro gain gyro gain servo direction during auto stabilization.
  • Page 25 Feiyu Electronics Company AILERONS - Roll the plane to see the following action: Aileron Movement In Auto Stabilization Mode Left aileron automatically Right aileron automatically moves upward. move upwards Roll left Roll right Left aileron automatically Right aileron automatically move downwards move downwards.
  • Page 26: Recording Your Aircraft Neutral Value

    3. The control benchmark of FY31AP is the NEUTRAL VALUE position. But the installed angle of the FY31AP to the horizontal level of the plane should not exceed 15 degrees. 4. You can do this procedure with the aircraft on the ground or in the air.
  • Page 27 (i.e. fuselage and wings perfectly level). Step 4: ON your transmitter and zero all your trims. Power up the FY31AP in Mode 1 (Manual Mode). Confirm there are no deflection to the Aileron, Elevator and Rudder surfaces by adjusting your servo links.
  • Page 28: Recording Neutral Value 'On The Fly

    Step 7: While in this Neutral Value, activate Mode 3 (Auto Stabilization Mode) for at least 2 seconds. Since Dip Switch No. 4 is ON, the FY31AP will now record your Neutral Value. After 2 seconds, switch back to manual mode and land your aircraft.
  • Page 29: First Flight Test And Sensitivity Adjustment

    Auto Stabilized Mode and the Neutral Value is already recorded. 2. Now you need to fine tune your FY31AP stability gain via flight tests. For the first flight it is recommended that the gains not be set too high. To avoid excessive oscillation (flight overcorrection) put the gyro gain at mid point.
  • Page 30 The FY31AP should bring the aircraft through the Waypoints already programmed into the autopilot. f) By default, the FY31AP will auto repeat the waypoints flying – after flying over the last waypoint coordinates, it will fly back to the first waypoint and carry out the flight route again.
  • Page 31: Gyroscope Initialization (Re-Setting)

    Initialization / Reset Procedure Install the jumper as shown above: Power-ON the FY31AP and keep it stationary for at least 20 seconds. You will notice the red light blink at two different rates (or turns off). Gyro re-setting is complete.

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