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
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issues.
WhenusinganS-FHSSreceiver,atransmitterthatcanswitch
between"Digitalservomode"and"Analogservomode"must
beusedinanalogservomode.Theservothatconnectstothe
gyrousesadigitalservo.
• It may not work in S-FHSS receiver + Digital servo mode.
Connecting the GYD470 S.BUS Connecting the GYD470
Connecting the GYD470 S.BUS Connecting the GYD470
Mounting to Chassis
Mounting to Chassis
Steering servo
Steering servo
SR mode
SR mode
RateGyroforRCDriftCars
INSTRUCTION MANUAL
INSTRUCTION MANUAL
OnlyforFutabadigitalservo
ForRCmodels
Gyro
Includedsponge
sensortape
Degrease
andstick Horizontalplane
Flat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firmly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position
The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 permissi o n . 
•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 oc-
cur 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setting
Vehicle 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function
You 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weight
Compact size（20.7x20.7x11mm）and light weight（3.7g）realized by
high density mounting technology.
● Easysetup
The 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servo
GYD470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 GYD470
Features of GYD470
Functions
Functions
●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 Contents
Set Contents
The following items are supplied with the GYD470:
Miniscrewdriver
Sensortape
Extensioncord
Nylonstrap
GYD470
1M23N38414 Thank 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port
GYD470 GYD470
S.BUSReceiver
Steeringservo Steeringservo
SteeringCH1
GyrogainCH3
Receiver
GyrogainCH(Receiver)←connect→Port2(GYD470)
Remotegaineffective.Trimmer(GYD470)becomesLIMIT.
GyrogainCH(Receiver)←Itdoesnotconnect→Port2(GYD470)
Remotegainisinvalid.Trimmer(GYD470)becomesGAIN.
S.BUSCH
Steering---1CH
Gyrogain---3CH
Extensioncord
In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
manual.Adjustthelinkagerodsothatthetrimamountis
assmallaspossible.Adjustthelinkagesothattheleftand
rightmovementanglesareequal.EPA(ATV)shouldbe
100%.WhenusingS.BUSservo,initializeaparameter.
Maketheservooperatingrangeaswideaspossible.
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
Futabareceiveronly

Adjustments
Adjustments.
Tuning Adjustment
Tuning Adjustment
S.BUS System
S.BUS System
AVCS / NORMAL Modes
AVCS / 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).
3Turn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firmer.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different,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control
Incaseoftherightslide
⇒Rightsteeringcontrol
AVCS NORMAL
The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rate
Gain
NORMAL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
full
D/R(UPside)
Limittrimmer
Adjustments
Gyro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.
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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 Switching
Gyro 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
figure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
<DEXWVXND&KRVHLPXUD&KRVHLJXQ&KLEDNHQ-DSDQ
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