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Features of GYA441
Set Contents
Connection
S.BUS 3-axes Connection Example
S.BUS Connection
Mounting to the Chassis
Name and Function of Each Part
S.BUS connection makes the wiring extremely simple.
The GYA440 and GYA441 can be connected by one
3-way hub. The aileron, elevator, and rudder servos
are output from the gyro. Servos other than S.BUS ser-
vos can also be used. When an R6303SB is used the CH
switching mode is set to group 7. The normal group 7
CH outputs are CH3, CH11, and CH12. CH3 is the throt-
tle channel and CH11 and CH12 are spare channels.
The transmitter function settings are shown below. A
total of 9 channels are used with three axes gyro con-
trol.
Function
GYA441
(aileron)
GYA441
(elevator)
GYA440
(rudder)
Aileron CH1
Elevator CH2
Rudder CH4
2nd aileron CH6
2nd elevator CH9
Gyro sensitivity
(aileron)
CH5
Gyro sensitivity
(elevator)
CH7
Gyro sensitivity
(rudder)
CH8
● Dedicated airplane setting
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● Compatible with aileron or elevator control
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● Remote gain function
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● Integrated type, compact size and light weight
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● Easy setup
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● Supporting the S.BUS/S.BUS2 connection
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Rate Gyro for Airplanes
Aileron or Elevator use
INSTRUCTION MANUAL
INSTRUCTION MANUAL
For RC models
Trimmer
(LIMIT/GAIN)
(Digital/Analog
servo function)
LED
Aileron/Elevator
selector switch
Port 1 (S.BUS input/
Aileron and elevator
input)
Port 2 (2nd aileron or 2nd
elevator/Gyro sensitivity input)
Port 3 (Aileron/Elevator servo output)
Gyro direction
switch
Aileron(Elevator)
servo
※Only S.BUS is compatible with 1 servo.
Extension cord: (Black)
Accessory connector (Red)
GYA441
To port 3
To port 1
Aileron/Elevator CH
Gyro sensitivity CH
To port 2
Receiver
Gyro gain CH(Receiver)←connect→Port2(GYA441)
Remote gain effective. Trimmer(GYA441) becomes LIMIT.
Gyro gain CH(Receiver)←It does not connect→Port2(GYA441)
Remote gain is invalid. Trimmer(GYA441) becomes GAIN.
S.BUS Receiver
Aileron (Elevator) servo
2nd servo
Extension cord: (Black)
GYA441
To port 3
To port 2
When there is 1
servo, port 2 is not
connected.
To port 1
S.BUS/S.BUS2 port
Controlled axis (roll axis)
90°
Gyro
Degrease and stick
Flat surface of the fuselage to which
double-sided tape easily sticks
(double-sided tape does not stick to balsa)
Sensor tape
Rudder servo
Elevator servo
GYA440(Sold separately)
GYA441
GYA441
Aileron servo
S.BUS/S.BUS2 port
S.BUS Receiver
This is a three axes
connection example. The
rudder uses a GYA440 and
the receiver is an R6303SB.
< GYA441 aileron mounting >
The turning direction which fixes the gyro can be any
direction up to 360° relative to the roll axis.
LIMIT
GAIN
Function Aileron mode Elevator mode
Aileron CH1
Elevator CH2
2nd aileron CH6
2nd elevator CH9
Gyro sensitivity (Aileron) CH5
Gyro sensitivity (Elevator) CH7
At S.BUS/S.BUS2 operation, the channels are fixed as shown in the
table below. Match the transmitter channels to these.
GYA441 Ratings:
(Integrated sensor type rate gyro)
Gyro sensor: MEMS vibrating structure gyro
Operating voltage: DC4.0V to 8.4V
Current drain: 30mA (excluding a servo)
Operating temperature range: -10ºC to +45ºC
Dimensions: 20.5 x 20.5 x 11.0mm (except protrusion)
• Weight: 3.7g
Functions: (1) Gyro sensitivity trimmer, (2) Monitor LED, (3) Two servos
compatibility, (4) S. BUS/S.BUS2 compatibility, (5) Digital / analog servo
function
Monitor LED display
Operation status Color Display Remarks
1. No servo pulse /
sensor error
Red 4 flash
2. Start of initialization
Green Fast blink
3. End of initialization
Red/Green/
Orange
Steady
light
Digital Analog
AVCS Red Red
Normal Orange Green
4. Turn
Red/Green Fast blink
Right (Green)
Left (Red)
5. Neutral deviation
Orange Slow blink
When stick operated
6. Gyro sensitivity zero
OFF
7. Switch switching
Green One blink
Each switching
8. Low battery
Red One flash
When power drops to 3.8V
or less
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GYA441
Mini screwdriver
Extension cord: (Black)
Extension cord: (Red)
Sensor tape
Magic strap (for clamping the wiring)
WARNING
Failure to follow these safety precautions may result in severe injury
to yourself and others.
Check that there is sufficient transmitter battery capacity for
flight.
• Determine the operating time of the receiver, gyro, and servo battery in the adjust-
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Analog servos cannot be used while in "digital servo" mode.
• Analog servos may break down if "digital servo" mode is selected.
Do not operate the airplane and transmitter sticks for about 3-5
seconds after turning on the GYA441 (When shared with the re-
ceiver).
GYA441 initialization and neutral position reading. The GYA441 is initialized when
the power is turned on. In the AVCS mode, the neutral position is also read at the
same time. If initialization ends normally, the operator is informed by two repetitive
movements of the servo to the left and right (a little).
Always check the direction of operation of the gyro.
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Do not strike the gyro with a hard object. Do not drop it onto a
concrete surface or other hard floor.
• The sensor may become damaged during strong impacts.
Do not use trims or mixing in AVCS mode.
• In the AVCS mode all corrections are made by the gyro. Therefore, if trimming and
mixing, are turned on, operation will be the same as deviating from the neutral po-
sition.
Do not use the GYA441 for applications other than RC airplanes.
•This gyro is designed for RC airplanes only. Do not use it for other applications.
Do not place gyro near heating equipment (engine, motor, ESC,
battery, servo, etc.).
Always allow the gyro to adjust to the surrounding environmental temperature be-
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tional issues.
Rudder control
(GYA440)
Aileron control
Elevator control
Servo
Mode
1M23N30802
• No part of this manual may be reproduced in any form without prior
permission.
• The contents of this manual are subject to change without prior notice.
• Futaba is not liable for any potential damage (accidental or otherwise)
that may occur after installation.
Before using your new gyro, please read this manual thoroughly
and use the gyro properly and safely. After reading this manual,
store it in a safe place.
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The gyro is very sensitive to vibration. Securely mount it with the included double-sided sponge tape at a position where vibration is
minimal and the gyro is perpendicular to the axis to be controlled. Since double-sided tape will not stick to balsa, make a smooth sur-
face by cementing a smooth plastic sheet. to the frame and securely attach the gyro with double-sided tape. Provide a surplus in the
wiring and bundle the wiring with the included magic strap so that it will not interfere with the rod.
1

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