MyFlyDream Crosshair AutoPilot Manual
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MyFlyDream Crosshair AutoPilot Manual

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MyFlyDream
Crosshair AutoPilot
Manual V1.02 beta
(This manual is a beta version.
Many new functions of Crosshair AP have not been described here yet.
Please check our website frequently to get a new update version)
www.MyFlyDream.com
Copyright © 2010 MyFlyDream. Translated with the help of FPV Model, MFD authorized reseller

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Summary of Contents for MyFlyDream Crosshair AutoPilot

  • Page 1 (This manual is a beta version. Many new functions of Crosshair AP have not been described here yet. Please check our website frequently to get a new update version) www.MyFlyDream.com Copyright © 2010 MyFlyDream. Translated with the help of FPV Model, MFD authorized reseller...
  • Page 2 Thank you for purchasing the MyFlyDream CROSSHAIR AutoPilot (hereinafter referred to as AP). Notes and Disclaimer Please follow this manual to get familiar with th e AP and to operate it correctly. The AP is a precision electronic device. Read this manual carefully to avoid damaging the device, yourself, other people, your aircraft and other property.
  • Page 3 Current Sensor 50A(default)/100A USB-TTL Firmware Updater The MFD Crosshair Autopilot is equipped with dual built-in three-axis gyroscopes, three-axis accelerometers, three-axis digital compass, and a barometer. One of the autopilot’s two dedicated processors is used to compute and control the attitude of the model aircraft, while another processor handles the OSD (on screen display) images and flight logic.
  • Page 4 Advanced Features: 1) Full attitude AHRS, dual backed up gyroscope and accelerometer, maximum rolling rate up to 2000°/s. 2) Built-in 30fps color video signal generator displaying OSD interface on black background in case camera signal is lost or camera is not connected. 3) 600 TV lines resolution color OSD with an easily readable flight interface presenting the flight information both numerically and graphically.

  • Page 5: Wiring And Connections

    2. WIRING AND CONNECTIONS The pins are grouped into A through E connectors based on their functions as shown in the chart above. Connections to other parts:...
  • Page 6 7~26v input Ground cable MFD Crosshair Autopilot supports 7 to 26V input. However, as the camera and TX are directly powered from the flight controller, we recommend to use 12V to power the flight controller. 12V power can be obtained from an optional MFD 12V DC-DC power module, or from a 3s battery; in this case the AP will provide 12V directly to the camera and Vtx.
  • Page 7 D) EXT Connector D is for the extension cable. USED FOR Video IN (Connect to Camera) Power Out (Same as power supply voltage of AP) +5V Out SDIO CLK (TF Card Clock) SDIO CMD (TF Card Command) SDIO D0 (TF Card Data) CAN RX (CAN-BUS L) CAN TX (CAN-BUS H) UART_A RX...
  • Page 8 Extension cables (see above picture) are clustered to the connector D of the Autopilot. CONNECTOR USED FOR PWM Input Channel 1, connecting the aileron channel of the radio Rx. PWM input 2~6 channels are connected to channels 2 to 6 of the radio Rx. Channels 1~6 are for PWM.

  • Page 9: Pwm Output

    E) PWM OUTPUT Connector E provides the output signal to servos/ESCs to control the aircraft. The white wire is for signal, the red wire is for powering the servos (AP doesn't supply the servo power), and the black wire is for GND. USED FOR Aileron servo, or the left rudder of the flying wing and V-tail aircraft.

  • Page 10: Installation

    As most parameter settings need to be done thru OSD menu, for the first calibration we recommend connecting the AP video output directly to a monitor. ↘ When Crosshair Autopilot detects the video signal loss, it automatically switches to Internal synchronous video signal mode, showing the OSD image on black background.
  • Page 11 How to enter the OSD menu  THR, CH5 and CH6 in LOW, move ELE to the bottom-right corner, wait for 2 seconds or longer until the OSD prompts “Enter menu?”. Then switch the CH5 to HIGH to enter OSD menu mode. How to exit the OSD menu ...
  • Page 12 Because every plane has its characters, these settings are only for reference. There are 3 types of plane available: NORMAL/WING/V-TAIL Select the type of you plane if via OSD menu PLANE SETTINGS->PLANE TYPE Especially we need to point out that loading settings from a pre-set model will not modify your servos REVERSED settings.
  • Page 13 Plane banks to the right: left aileron moves upward, the right one moves downward Plane nose up: elevator move downward If any control surface moves to an unexpected direction, go to PLANE SETTINGS OSD menu, reverse the corresponding channel (AIL,ELE or RUD). For instance if when the plane nose up, elevator goes upward, you have to reverse the PLANE SETTINGS->ELE status.

  • Page 14: Osd Layout

    AIL stick to the right to execute the calibration. The AP will start to calibrate itself and display some information on OSD. Wait for a while until the timer counts down to zero. Move AIL to left to exit the calibration. These parameters are calibrated during the COMMON CALIBRATION: 1.
  • Page 15 are 90,180,270. When the plane’s speed is greater than 5km/h the heading data comes from the GPS. When the speed is less than 5Km/H, the heading data comes from the combination of GPS and internal compass. The number of satellites that GPS locked. RSSI, receiver signal strength.
  • Page 16 18. Battery voltage (In Volt). This data is read from the current sensor. The gauge shows the remained battery life. To match the battery that you are using, you need to config the battery type via OSD menu SENSORS SETTINGS->BATTERY TYPE. The AP will assume that 4.2v is the voltage of a fully charged single cell battery.
  • Page 17 According to the above picture, our friend is at 9 O'clock, flying to almost the opposite direction with us. Our distance is 123m, and it's 115m below us. To use this function you need 2 or more MFD AAT system and connect them together. 2.
  • Page 18 The throttle is controlled by AP in RTH mode. Please follow the following procedure in the test fly: 1) Switch the AP to MAN (manual mode), fly it as a normal RC plane. Check the plane CG and the control surface before you fly it. Trim the plane if the plane is not able to fly level and straight.

  • Page 19: Osd Menu System

    3) Next is to test RTH function. You have to set home before take off. If you don't set home the OSD will show N/A instead of a target distance reading. Once you engage RTH mode in this situation, AP will load in the last HOME location and display a warning message.
  • Page 20 1. AUTO-PILOT SETTINGS [Settings about automatic flying] 1.1 *MAX-ROLL Maximum roll angle, in degrees. This is the maximum roll angle AP can use maneuverability except in MAN mode. Increase this parameter will increase the of the plane, but a too big value will cause unstable flying or crash. Recommended value is 20~45 degrees. 1.2 *MAX PITCH-UP Maximum pitch up angle, in degrees.
  • Page 21 not able to track the flying path well. 1.14 CRUISE-D Cruising damping, use to reduce the above oscillating heading in auto-fly. 1.15 ALT-P Altitude gain. The bigger the value, the faster the plane try to achieve the altitude. A too high value will cause to pitch up/down oscillating. A too small value will cause the plane not able to maintain its altitude.
  • Page 22 2.5 *ROLL-TRIM in degrees. Use this parameter to compensate the AP installing error in roll. You can adjust this parameter to trim the plane's roll attitude. For example, the plane rolls to the left a bit in STB mode, you should increase this ROLL-TRIM to make the plane to roll to the right a bit.

  • Page 23: Osd Settings

    ELE and RUD output of the AP in this case. AP will mix the ELE/RUD controls, do not use any mix for v-tail models on your transmitter.  AP will set the PLANE TYPE when you load parameters via SAVE/LOAD->LOAD PRE-SET 2.11 CH5=H,CH6=M Define the mode AP will use when CH5=HIGH, CH6=MID.

  • Page 24: Sensors Settings

     Selecting ROLL/PITCH will show (top to bottom): Roll angle (negative numbers mean rolling to the left, positive numbers means rolling to the right) / Pitch angle (negative numbers mean diving, positive numbers mean climbing)  Selecting LON/LAT will show (top to bottom): Altitude (ASL) / Longitude (LON) / Latitude (LAT) ...

  • Page 25: Misc. Settings

    MAX and execute it when your RX has the best signal strength. Then move to MIN and execute it. Turn off your transmitter now to make sure the RX has the worst signal strength. Make sure your RX Failsafe outputs CH5=H to avoid quitting menu system when you turn off the TX. (Usually we set F/S to CH5=H and CH6=H, so it should not be a problem).
  • Page 26 R/P: Adjust ROLL-P and PITCH-P C/A: Adjust CRUISE-P and ALT-P Once this option is activated you can use CH7 and CH8 to adjust the parameters anytime. For example, if you set this option to R/P, you can use CH7 to adjust ROLL-P and use CH8 to adjust PITCH-P.

  • Page 27: Ground Station

    Set OSD menu MISC->DATA RADIO to a proper baudrate, for example 9600. Run the APM Mission Planner (it's an open source GCS which is also available on www.MyFlyDream.com). Select corresponding COM port, then click the icon on the upper-left corner After we connect to the AP successfully, click the "Flight Plan"...
  • Page 28 Now you can place some way points on the map with your mouse. Make sure you set the correct altitude for the way points. AP can handle maximum 20 way points. When all way points are defined, click "Write WPs" button on the bottom-right corner to upload the way points to AP.

  • Page 29: Firmware Upgrade

    More parameters will appear here in the future. 8. Firmware upgrade MyFlyDream will continue to improve the firmware to fix bugs and get better performance. Unless a warning message is given in the firmware update history, no setting will be erased...
  • Page 30 COM port number that assigned by the system. For example it is COM4 as shown in the picture below. Plug the USB-TTL blue connector in the GPS port of AP (Also blue) 3. Download the update program: http://www.myflydream.com/inc/lib/download/download.php?DId=43 Run the MFD_Update.exe program. Select corresponding COM port. 4. Download the most update firmware:...
  • Page 31 Click "Select File", Select the firmware file downloaded from our website. 6. Click "Update". Wait until complete. 9.FAQ Q: Why I can't see OSD on my monitor? A: You need to feed video signal (from a camera) to MFD AP to get video output.
  • Page 32 Q: Why it can't lock heading direction when I am in ALT mode and release all sticks? A: use SENSORS SETTINGS->CAL. JOYSTICK to let the AP know the neutral points of your radio. Q: Why the plane is not able to reach the target altitude in ALT/RTH/WPT/CIR modes? A: First you need to make sure the plane can fly almost levelly in MAN mode.

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