Baytec A3X Pro Expert II Bedienungsanleitung

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A3X Pro Expert II

3-axis Gyro & Flight Stabilizer for fixed-wing

User Manual

2014.12.1 Revision

For Firmware Version V1.0

& Data Version V1.0

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Package Contents

Main Controller × 1

The main controller has a built-in 32-bit MCU and a MEMs sensor consist of a

3-axis gyroscope and a 3-axis accelerometer. There are up to 7 input channels and

5 output channels. It also has a 4-pin data interface for connecting the program

card and PC. A RGB LED is used to display the operation state. The main controller

is small in size and light in weight, it can be attached flat or upright, and even

upside down under the plane.

Program Card × 1

The program card is used to setup the controller more quickly and easily, especially in

the field. The card has a white backlit LCD screen and supports both Chinese and

English languages. The firmware of the card can be upgraded online and it can be also

used for other products from Bay-Tec.

Receiver Cable × 3

Cables used to connect the main controller and the receiver. Including male to male

power lead 15cm × 1, combined signal lead 15cm × 2.

Data Cable × 1

Cable used to connect the program card or PC.

USB Adapter × 1

This adapter is used to connect to the USB port of PC.

3M Double-sided Tapes × 2

The double-sided tapes are used to attach the controller on the fuselage.

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Package Contents ....................................................................................................................................... 2

Installation .................................................................................................................................................. 5

Connection .................................................................................................................................................. 6

Standard Receiver .......................................................................................................................................... 6

Futaba S.Bus / S.Bus 2 .................................................................................................................................... 6

Flight Modes ............................................................................................................................................... 8

Gyro Off Mode ............................................................................................................................................... 8

Normal Mode ................................................................................................................................................ 8

3D AVCS Mode............................................................................................................................................... 8

Auto-balance Mode ....................................................................................................................................... 8

Auto-hover Mode .......................................................................................................................................... 8

User Defined Mode ........................................................................................................................................ 8

Stick Control Modes ................................................................................................................................... 9

Manual Mode (MM) ...................................................................................................................................... 9

Auto Mode (RR/AR) ....................................................................................................................................... 9

Wing Type...................................................................................................................................................10

LED Descriptions ........................................................................................................................................11

Gyro Direction ............................................................................................................................................11

Confirm the gyro direction on Aileron ...........................................................................................................12

Confirm the gyro direction on Elevator .........................................................................................................12

Confirm the gyro direction on Rudder ...........................................................................................................12

Quick Start ..................................................................................................................................................13

Config Software .........................................................................................................................................14

Software and USB Driver Installation ............................................................................................................14

GUI ...............................................................................................................................................................14

Main Menu ...................................................................................................................................................15

Language ......................................................................................................................................................15

Connection Wizard .......................................................................................................................................16

Read .............................................................................................................................................................17

Write ............................................................................................................................................................17

Firmware Update ..........................................................................................................................................17

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Basic Settings ................................................................................................................................................19

Wing Type ....................................................................................................................................................20

Mounting ......................................................................................................................................................20

Gain ..............................................................................................................................................................20

Radio ............................................................................................................................................................20

Level Offset ..................................................................................................................................................22

Hover Offset .................................................................................................................................................23

Debug Mode .................................................................................................................................................23

Program Card .............................................................................................................................................24

Buttons .........................................................................................................................................................24

Connection ...................................................................................................................................................24

Language ......................................................................................................................................................24

Menu Operation ...........................................................................................................................................24

Option Selection ...........................................................................................................................................25

Value Modification .......................................................................................................................................25

Specifications .............................................................................................................................................25

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Installation

The controller must be mounted on the platform inside the airframe by using one of the provided double-sided

tapes. When mounting, try your best to mount the controller as close to the C.G. as possible. Pay attention that

the edges of the controller unit are all parallel with the corresponding axes of the plane, and make it parallel to

the mounting platform. The controller can be attached flat or upright, and even upside down under the plane. The

illustration shows you the 4 different mounting orientations. However, no matter which orientation to select, you

have to ensure that the side of DATA interface is always pointing to the plane’s heading direction, otherwise the

stabilizer will not work properly.

VERY IMPORTANT!

1． You need only one piece of the double-sided tapes each time. A soft or thick mounting may probably

hinder the performance of the gyroscope.

2． Never use the hot-melt glue or nylon ties to fix the controller onto the airframe!

3． The controller is a sensing device, please make enough space around it and keep as far away from other

devices or wires as possible.

Flat

Horizontal Face Up

Flat Inverted

Horizontal Face Down

Upright

Vertical

Upright Inverted

Vertical Upside Down

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Connection

A3X Pro E. supports a standard receiver or a Futaba’s S.Bus receiver. You don’t need to connect all of the 7 input

channels, just connect those you want to use. The controller will detect the input signal for each channel and

enable or disable the correlation functions automatically. For example, if the input [AIL2] is connected, the dual

aileron control system will be activated by the controller. It’s recommended that you should at least connect the

channels for [AIL], [ELE], [RUD] and [MOD].

Standard Receiver

Futaba S.Bus / S.Bus 2

When using a Futaba’s S.Bus receiver, you can make a single-line connection between the receiver and the

controller. Just plug the male to male lead into the input [S.Bus/MOD] and from the receiver’s s.bus output pin. In

this case, you don’t need to connect other inputs of the controller anymore. As the S.Bus is a single-line solution

all channels are transmitted via one single line, in order to make the controller distinguish the input signals for

each channel correctly, you have to tell it the channel mapping on your transmitter by using the program card or

the config software.

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VERY IMPORTANT!

1． Please respect the polarities for the plugs going to the controller. The orange signal line must always be on

the top and the brown on the bottom.

2． Check all the connectors and make sure that all of them are firmly connected to the pins.

3． If both [AIL] and [AIL2] are connected, the dual aileron control function will be activated. The [OUT1] and

[OUT4] are used to connect the 2 aileron servos. If the input [AIL2] is not connected, the controller will

switch to single aileron input mode. In this case, you can still plug the 2 aileron servos into [OUT1] and

[OUT4], just as using a Y-cable on the aileron. It’s quite the same as when using the dual elevator.

4． Please refer to the manual of your radio to find the right way to assign a 3-position switch for flight mode

control, and a knob or slide lever for remote master gain control.

5． You have to reboot the controller after you change the receiver type to make the new setting take effect.

Port Description

Inputs

AIL For aileron control

ELE For elevator control

RUD For rudder control

AIL2 For aileron 2 control

ELE2 For elevator 2 control

GAIN For remote master gain control

S.Bus/MOD For flight mode switch or Futaba’s S.Bus input. It’s also the power supply interface of the

controller.

Outputs

OUT1 To aileron servo

OUT2 To elevator servo

OUT3 To rudder servo

OUT4 To the second aileron servo

OUT5 To the second elevator servo

Others

DATA To the program card and the PC

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Flight Modes

A3X Pro Expert provides 6 different flight modes.

Gyro Off Mode

Choose this mode to disable the gyros for all channels. The plane will be completely under the control of the radio.

The plane will go back to its previous performance when operating it in this mode. Usually it is only used to test.

Normal Mode

Normal mode is the most basic application of the gyro. In this mode, the gyro will sense angular velocity on each

axis and make a momentary reaction. The normal mode is suitable for all types of fixed-wings, it can effectively

improve the stability of your plane specially on a windy day.

3D AVCS Mode

The AVCS mode is an advanced application of the gyro. By adding an integral algorithm to the gyros, the controller

will try to lock the plane to its previous attitude if there is no command sent from the transmitter in a flight. This

mode can effectively help you to accomplish such hard actions as hover and knife edge. But this mode is designed

especially for the 3D planes, it’s not suitable for the planes those not designed for 3D flight.

Auto-balance Mode

The auto-balance mode is designed for the new beginners or the FPV applications. When operating in this mode,

the controller will command the plane to maintain level flight automatically when you release the sticks. When

switch it to this mode from any other modes in an emergency, the plane will recover to the level flight

automatically, which we call “one-click rescue”.

Auto-hover Mode

The auto-hover mode is another form of the self balance ability of the controller. The only difference is that the

correction from the gyro will be applied to both pitch and yaw axes, to keep the plane always vertical. When

switch to this mode, the plane will lift its nose and start to hover automatically, which we call “one-click hover”.

User Defined Mode

This mode allows you to select different mode for each axis, from normal , 3D or gyro off mode.

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Stick Control Modes

A3X Pro E. provides 2 different control modes for the sticks, including Manual Mode and Automatic Mode. The

default is Manual Mode when you first get it.

Manual Mode (MM)

When manual mode is chosen, the sticks are used to control the surfaces directly as usual. That is, there is no

rotation rate or tilt angle locking and limitation when you move the sticks. All the servos will be completely under

the control of the radio. It’s more obvious to the users because you can see the servos move following the sticks as

you expected. The plane will maintain its original control behavior when operating it in this mode.

Auto Mode (RR/AR)

When using this mode, the controller will take over the control of all servos. The sticks are used to control the

rotation rate (RR) on each axis when flying in normal or 3D mode, or the tilt angle rate (AR) on each axis when

flying in auto-balance or auto-hover mode. The max rotation rate and max tilt angle can be set in the program

card or the config software. In this mode, the controller will handle the position of the surfaces based on the

actual rotation rate or tilt angle of the plane intelligently. This is why the movement of the servo will become

different from the manual mode.

Flight Mode Stick Control Mode

Manual Mode Auto Mode

Gyro Off Mode MM MM①

Normal Mode MM RR

3D AVCS Mode RR② RR

Auto-balance Mode MM AR

Auto-hover Mode MM AR

User Defined Mode Depends on the flight mode of each axis

MM: Stick controls the servo directly.

RR: Stick controls the rotation rate on each axis.

AR: Stick controls the tilt angle rate on each axis.

① Whatever the setting of control mode is, the stick is always used to control the servo directly when

operating in gyro off mode or the gyro of the corresponding axis has been disabled.

② Whatever the setting of control mode is, the stick is always used to control the rotation rate on each

axis when operating in 3D mode.

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Wing Type

A3X Pro E. supports a standard wing type of the fixed-wing, including 1AIL+1ELE, 1AIL+2ELE, 2AIL+1ELE, 2AIL+2ELE,

and a delta-wing or V-tail mixing. Connect the servos following the illustration below.

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