Futaba Gyd470 User manual

WARNING

Failure to follow these safety precautions may result in severe injury to

yourself and others.

Check that there is sufﬁcient battery capacity.

Do not operate the model and transmitter steering wheel

for about 3-5 seconds after turning on the GYD470 (When

shared with the receiver).

• GYD470 initialization and neutral position reading. The GYD470 is initialized when the

power is turned on. 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.

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.

• 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 position.

Do not use the GYD470 for applications other than RC cars.

•This gyro is designed for RC cars only. Do not use it for other applications.

Analog servos cannot be used.

•The use of analog servos may cause servo trouble.

Do not place gyro near heating equipment (engine, motor,

ESC, battery, servo, etc.).

• Always allow the gyro to adjust to the surrounding environmental temperature before

ight. A large temperature change during use will cause drift and other operational

issues.

Connecting the GYD470 S.BUS Connecting the GYD470Connecting the GYD470 S.BUS Connecting the GYD470

Mounting to ChassisMounting to Chassis

Steering servoSteering servo SR modeSR mode

Rate Gyro for RC Drift Cars

INSTRUCTION MANUAL

Only for Futaba digital servoFor RC modelsGyroIncluded sponge sensor tapeDegrease and stickHorizontal planeFlat surface of the chassis where the sensor tape sticks easily. Mount the gyro level so that it is not tilted relative to the chassis.Use the included double-sided sponge tape to rmly at-tach the gyro perpendicular to the control axis, at a posi-tion where there is as little vibration as possible. Make the Gyro mounting positionThe direction of rotation fixed by the gyro can be any direction within 360°relative to the steering axis controlled by the gyro.•Nopartofthismanualmaybereproducedinanyformwithoutpriorpermis-sion.•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.

● Dedicated RC Drift car settingVehicle straight-line and cornering performance can be increased without

taking into account the effect of the road surface, etc.

● Remote gain function and mode switching functionYou can adjust gain from the transmitter (3 or more CH) by using the

remote gain function. Gain can also be adjusted with the trimmer on the

GYD470. The mode switching function allows AVCS/NORMAL gyro mode

switching.

● Integrated, compact, and light weightCompact size（20.7x20.7x11mm）and light weight（3.7g）realized by

high density mounting technology.

● Easy setupThe GYD470 can be used immediately with minimum setup.

● Supporting the S.BUS/S.BUS2 connection

Only one wire connection to the receiver can operate the GYD470.

● Only for Futaba digital servoGYD470 Ratings:(Integrated sensor type rate gyro)

• Gyro sensor: MEMS vibrating structure gyro

• Operating voltage: DC4.0 V to 8.4 V

• Current drain: 30 mA (excluding a servo)

• Operating temperature range: -10ºC to +45ºC

• Dimensions: 20.7 x 20.7 x 11.0 mm (0.82 x 0.82 x 0.43 in) (except protrusion)

• Weight: 3.7 g (0.13 oz)

• Functions: Sensitivity trimmer. LED monitor. Servo selection (SR mode

ON/OFF). S.BUS/S.BUS2 connection.

Features of GYD470Features of GYD470

FunctionsFunctions

●Trimmer

（Limit/Gain）●LED

●Servo selection switch

(SR mode ON/OFF) ●Port1（Steering input/

S.BUS input）●Port2（Gain input）●Port3（Steering servo output）●Gyro direction

Switch

Set ContentsSet Contents

The following items are supplied with the GYD470:

Mini screwdriver

Sensor tape

Extension cord

Nylon strap

GYD470

1M23N38406Thank you for purchasing the

GYD470 RC cars gyro. Compact

and lightweight, the GYD470 is

designed to control steering for RC

Drift cars. If the transmitter has 3

or more channels (capable of 3CH

adjustment) the gyro sensitivity can

be adjusted from the transmitter.

Features include simple set-up and

S.BUS/S.BUS2 connectivity. S.BUS/S.BUS2 portGYD470GYD470S.BUS Receiver

Steering servoSteering servo

Steering CH1Gyro gain CH3ReceiverGyro gain CH(Receiver)←connect→Port2(GYD470)Remote gain e󱐯ective. Trimmer(GYD470) becomes LIMIT.Gyro gain CH(Receiver)←It does not connect→Port2(GYD470)Remote gain is invalid. Trimmer(GYD470) becomes GAIN.S.BUS CHSteering --- 1CHGyro gain --- 3CHExtension cordIn S.BUS connection, the port 2 is not connected. Remote gain is still eﬀective.wiring loose and bundle it with the included nylon strap so that it will not interfere with the rod.Link the servo in accordance with the kit instruction man-ual. Adjust the linkage rod so that the trim amount is as small as possible.When using S.BUS servo, initialize a parameter.Make the servo operating range as wide as possible. Make the numerical value of EPA (ATV) equally in left and right.Monitor LED display

State Color Move Reference

1. Power ON Orange 2 blinks

2. No servo pulse / Error Red Slow blink

3. Signal input from receiver Green Fast blink

4. Sensor initialization Red/Green ON AVCS (Red)

Normal (Green)

5. Turn Red/Green Fast blink Right (Green)

Left (Red)

6. Neutral offset Orange Slow blink Steering operation

7. Gain off －OFF

8. Switch operation Green One blink Each time of switch

operation

9. Low battery Red One ﬂash Less than 3.8 V It is possible when using the S.BUS setting compatible transmitter to change the servo to "SR Mode" and improve the servo response. If the servo can't be changed to SR mode, do not set the TX to SR mode. Not compatible with UR mode

AdjustmentsAdjustments.Tuning AdjustmentTuning Adjustment

S.BUS SystemS.BUS System

AVCS / NORMAL ModesAVCS / NORMAL Modes

Setup before a run [ Remote gain use ]

Gain adjustments are carried out with a transmitter.

Follow this procedure when the port 2 of gyro and gain CH of the

receiver are connected. (or with S.BUS connection)

1Run the car in the gyro off (gyro gain 0%) and adjust the steering trim (sub trim).2Select the appropriate setting for the steering servo that you are using. Servo selection switch of GYD470 should be moved to SR mode ON or OFF. *Do not use a normal digital servo in the SR servo mode (ON). The servo may be damaged. Use a normal digital servo in the SR servo mode (OFF).　　　3Turn on your transmitter's power. Set the gyro sensitivity to about 70% at the NORMAL or AVCS side in accordance with the transmitter instruction manual. The <GAIN CH><AVCS / NORMAL Modes> graph of the next page is referred to.*Makethegaintuningadjustmentafterrunningthecarandnotingthebehavior.4Receiver ON→The GYD470 requires 3-5 seconds to initialize when the power is turned on. Do not move the car and do not move the steering wheel during this initialization or the gyro may not initialize properly. Once the initialization process has been completed the steering servo will move (a little) several times indicating that the GYD470 is now ready for use. If the neutral has shifted, LED will blink orange. In that case, it reboots.5Move the steering wheel to the left and right and perform adjustment at the limit trimmer so that the servo operation is maximum without any bind of the control linkage or mechanical limits. Actually drive the vehicle and adjust the gyro sensitivity.

1Always re-trim with the gyro gain at 0.2In this state turn the receiver power OFF →ON. The neutral position is memorized. Steering trim must not be performed while the car is running.The gyro has 2 operating modes: NORMAL mode and AVCS mode. In the AVCS mode, gyro control is rmer. The car will hold heading via the drivers commands. In NORMAL mode the gyro will try to counter steer, but still allow the car to drift regardless of previous heading. Because the feel of operation is di󱐯erent, choose your favorite mode.3CH (GAIN CH) is set up with reference to the manual of a transmitter. Neutral position becomes GAIN 0%. It is divided into AVCS side and NORMAL side. Check using the GYD470's LED.When Port 2 is not used for gain, and SBUS/SBUS2 is not used, the trimmer works as the gain adjustment shown below.In case of the right slide⇒Left steering controlIn case of the right slide⇒Right steering controlAVCSNORMALThe gyro will try to get the car to grip in the drivers steering direction. The gyro will try to counter steer regardless of the angle of the car. 0%-55%+55%50%50%100%100%+110%-110%End point rateGainNORMAL side（LED : GREEN）AVCS side（LED : RED）Unlike conventional radio control systems, the S.BUS system sends operating signals from the receiver to a gyro or other S.BUS compatible device by data communication. The S.BUS compatible device executes only those parts of this data for the channels set by itself. For this reason multiple servos can be connected to the same signal line.The S.BUS system requires a dedicated S.BUS receiver and S.BUS servo (gyro, etc.).If the car is turned to the left by hand → steering goes out on the right＜Limit Trimmer Adjustments＞It adjusts to the maximum operation of linkage.Steering wheel to fullD/R (UP side)Limit trimmer AdjustmentsGyro sensitivity zero --- LED OFF

AVCS side --- LED red

NORMAL side --- LED green

6Using the gyro direction switch, adjust the gyro operating direction so that steering moves all the way to the right when the car is turned to the left. Be sure to set gyro operating direction correctly or the car will not run.[ When remote gain function is off ]

Adjust the gyro sensitivity with the GYD470 trimmer.

If the port 2 of gyro is not connected, remote gain is automatically

set to being inhibited. (S.BUS connection is excluded)

In this case, the limit trimmer is automatically changed to gyro

sensitivity setting trimmer.

(Limit adjustment cannot be performed. A limit is xed to 50 right

and left.)

1Select the appropriate setting for the steering servo that you are using. Servo selection switch of GYD470 should be moved to SR mode ON or OFF. *Do not use a normal digital servo in the SR servo mode (ON). The servo may be damaged. Use a normal digital servo in the SR servo mode (OFF).2Gain trimmer halfway to the left : NOMAL(green) or right : AVCS (red) from the 70% point.3Receiver ON→The GYD470 requires 3-5 seconds to initialize when the power is turned on. Do not move the car and do not move the steering wheel during this initialization or the gyro may not initialize properly. Once the initialization process has been completed the steering servo will move (a little) several times indicating that the GYD470 is now ready for use. If the neutral has shifted, LED will blink orange. In that case, it reboots.4Using the gyro direction switch, adjust the gyro's operating direction so that steering moves all the way to the right when the car is turned to the left. Be sure to set the operating direction correctly or the car will not run.● Trimmer operation*Since this gyro is also very small, the adjustment trimmer is also a small part. Always operate the trimmer with the accessory mini screwdriver and without applying unreasonable force.*Limitissymmetricalfromtheneutralposition.Onlyproceedwiththelimitadjustmentaftercompletingthetrimadjustment.Gyro Sensitivity and mode SwitchingGyro Sensitivity and mode Switching

When the remote gain function is not used, the clockwise direction from the center of the sensitivity setting trimmer is the AVCS mode and the counterclockwise direction is the NORMAL mode. At the center position the sensitivity be-comes zero and when the trimmer is turned fully to the left or right, the sensitivity becomes 100%. The sensitivity setting criteria by end point is shown in the gure below.＜GAIN CH ＞Gyro sensitivity zero --- LED OFF

AVCS side --- LED red

NORMAL side --- LED green

When the remote gain function is used, NORMAL and AVCS mode switching is performed in accordance with the direc-tion of operation of the transmitter's remote gain channel. At the + rate side, the AVCS mode is selected and at the – rate side, the NORMAL mode is selected. The sensitivity is changed by adjusting the end point rate. 0%

NOMAL 70%

AVCS 70%AVCS 100%

NORM 50%NORM 100%

0%AVCS 50%FUTABA CORPORATION

Hobby Radio Control Business Center Sales & Marketing Department

1080 Yabutsuka, Chosei-mura, Chosei-gun, Chiba-ken, 299-4395, Japan