FUTABA GYC441 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 GYC441 (When
shared with the receiver).
• The GYC441 is activated when the power is turned on. The neutral position is also
read at the same time. If initialization is successful, you will see the servo move left
and right slightly.
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 driving from the neutral position.
Do not use the GYC441 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 damage.
Do not place gyro near heating equipment (engine, motor,
ESC, battery, servo, etc.).
• Always allow the gyro to adjust to the outside temeprature before driving.A large tem-
perature change during use will cause drift and other operational issues.
Connecting the GYC441 S.BUS Connecting the GYC441
Mounting to Chassis
Steering servo SR mode
RateGyro
I NSTRUCTION M ANUAL
I NSTRUCTION M ANUAL
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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setting
Boosts vehicle straightness and cornering ability, regardless of surface type.
● 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
GYC441. The mode switching function allowsAVCS/NORMAL gyro mode
switching.
● Integrated,compact,andlightweight
High density mounting technology makes the GYC441 compact (20.5 x
20.5 x 11 mm) and lightweight (3.7 g).
● Easysetup
The GYC441 can be used immediately with minimal setup.
● S.BUS/S.BUS2support
Only one wire-receiver connection is needed to operate the GYC441 with
S.BUS/S.BUS2.
● OnlyforFutabadigitalservos
GYC441Ratings:
(Integrated sensor type rate gyro)
•Gyro sensor: MEMS vibrating structure gyro
•Operating voltage: DC 4.2V to 8.4V
•Current drain: 30mA (excluding a servo)
•Operating temperature range: -10 ºC to +45 ºC
•Dimensions: 20.5 x 20.5 x 11.0 mm (0.8 x 0.8 x 0.43 in) (except connector)
•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 GYC441
Functions
Monitor LED display
State Color Move Reference
1. No servo pulse / sensor
error Red 2 flash
2. Warm-up Green Fast blink
3. Sensor initialization Red/Green ON AVCS (Red)
NORMAL (Green)
4. Turn Red/Green Fast blink Right (Green)
Left (Red)
5. Neutral offset Orange Slow blink Stick operation
6. Gain OFF −OFF
7. Switch operation Green One blink Each time of switch
operation
8. Low battery Red One flash Less than 4.0V
●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
The following items are supplied with the GYC441:
Mini screwdriver
Sensor tape
Extension cord
Nylon strap
GYC441
1M23N33902 Thank you for purchasing the
GYC441 RC car gyro. Compact
and lightweight, the GYC441 is
designed to control steering in your
RC car. If the transmitter has 3 or
more channels (capable of 3CH
adjustment), gyro sensitivity can
be adjusted from the transmitter.
Features include simple set-up and S.BUS/S.BUS2
connectivity.
S.BUS/S.BUS2port
GYC441 GYC441
S.BUSReceiver
Steeringservo Steeringservo
SteeringCH1
GyrogainCH3
Receiver
GyrogainCH(Receiver)←connect→Port2(GYC441)
Remotegaineffective.Trimmer(GYC441)becomesLIMIT.
GyrogainCH(Receiver)←Itdoesnotconnect→Port2(GYC441)
Remotegainisinvalid.Trimmer(GYC441)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.
WhenusingSRmode,connectasshownontheleft.
*WhenusingSRmode,SBUSconnectionisnotpossible.
wiringlooseandbundleitwiththeincludednylonstrapso
thatitwillnotinterferewiththerod.
Linktheservoaccordingtothekitinstructionmanual.Ad-
just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.
Equalize EPA(ATV) left and right.
ItispossiblewhenusingtheT7PX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.

Adjustments.
Tuning Adjustment S.BUS System
AVCS / NORMAL Modes
Setup before a run [ Remote gain use ]
Gain adjustments are carried out with a transmitter.
Follow this procedure when the gyro's port 2 and the receiver's gain
CH are connected (or connected via S.BUS).
1Runthecarinthegyrooffmode(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GYC441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according tothetransmitter's instructionmanual.Refer
tothe<GAINCH><AVCS/NORMALModes>graphonthe
nextpage.
*Makethegaintuningadjustmentafterrunningthecarandnoting
thebehavior.
4ReceiverON → TheGYC441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slightlyseveraltimes,indicatingthatthe
GYC441isnowreadyforuse.Iftheneutralhasshifted,the
LEDwillblinkorange.Inthatcase,itreboots.
5Movethesteeringwheelleftandrightandadjustthe
limittrimmertomaximizeservooperationwithout
bindingthecontrollinkageormechanicallimits.
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AVCSmode,theangleiscontrolledsimultaneously
withNORMALmode'srate control(swingspeed).TheAVCS
modeincreases straightstabilitymorethanNORMAL mode.
Chooseyourmodetomatchyourpreferences.
3CH(GAINCH)issetupwithreferencetothetransmitter
manual.NeutralpositionbecomesGAIN0%.Itisdividedinto
AVCSsideandNORMALside.RefertotheGYC441'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.
0%
-50%
+50%
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devicesbydatacommunication.TheS.BUS
compatibledeviceexecutesonlyexecutesdataforthechan-
nelsitsets.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
totheright
＜LimitTrimmerAdjustments＞
Itadjuststothe
maximumoperationof
linkage.
Steeringwheelto
full Limittrimmer
Adjustments
D/R(UPside)
Gyro sensitivity zero --- LED OFF
AVCS side --- LED red
NORMAL side --- LED green
6Usingthegyrodirectionswitch,adjustthegyro
directionsothatsteeringmovesallthewaytothe
rightwhen thecaris turnedtotheleft.Correctly setgyro
operatingdirectionorthecarwillnotrun.
[ When remote gain function is off ]
Adjust the gyro sensitivity with the GYC441 trimmer.
If port 2 of gyro is not connected, remote gain is automatically
prohibited. (S.BUS connection is excluded)
In this case, the limit trimmer is automatically changed to the
gyro sensitivity setting trimmer.
/LPLWDGMXVWPHQWFDQQRWEHSHUIRUPHG$OLPLWLV¿[HGWRULJKW
and left.)
1Selecttheappropriatesettingforthesteeringservothat
youareusing.TheGYC441's servoselectionswitchof
GYC441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:NORMAL(green)or
right:AVCS(red)fromthe70%point.
3ReceiverON → TheGYC441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slightlyseveraltimes,indicatingthatthe
GYC441isnowreadyforuse.If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.Correctlyset
theoperatingdirectionorthecarwillnotrun.
● Trimmeroperation
*Sincethisgyroisverysmall,theadjustmenttrimmerisasmallpart.Al-
waysoperatethetrimmerwiththeincludedminiscrewdriverwithout
applyingexcessiveforce.
*Limitissymmetricalfromtheneutral
position.Onlyproceedwiththelimit
adjustmentaftercompletingthetrim
adjustment.
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
AVCSmodeandthecounterclockwisedirectionisNORMAL
mode.Atthecenterposition,thesensitivitybecomes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
FUTABA CORPORATION
oak kandakajicho 8F 3-4 Kandakajicho, Chiyoda-ku, Tokyo 101-0045, Japan
Phone: [phone], FAX: [phone]
©FUTABA CORPORATION 2017, 12 (1)
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%
NORMAL70%
AVCS70% AVCS100%
NORMAL50% NORMAL100%
0%
AVCS50%
AVCS NORMAL
Countersteersagainst
outsideforce,butcannot
correcttheskiddirection.
Correctstheskidding
directionandforcefully
maintainstheheading.
Outside
force Outside force