FUTABA GYC 470 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 GYC470 (When
shared with the receiver).
• The GYC470 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 GYC470 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 GYC470 S.BUS Connecting the GYC470Connecting the GYC470 S.BUS Connecting the GYC470
Mounting to ChassisMounting to Chassis
Steering servoSteering servo SR modeSR mode
Rate Gyro
I NSTRUCTION M ANUAL
I NSTRUCTION M ANUAL
Only for Futaba digital servoFor RC models
GyroIncluded 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 settingBoosts vehicle straightness and cornering ability, regardless of surface type.
● 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
GYC470. The mode switching function allows AVCS/NORMAL gyro mode
switching.
● Integrated, compact, and lightweightHigh density mounting technology makes the GYC470 compact (20.7 x
20.7 x 11 mm) and lightweight (3.7 g).
● Easy setupThe GYC470 can be used immediately with minimal setup.
● S.BUS/S.BUS2 supportOnly one wire-receiver connection is needed to operate the GYC470 with
S.BUS/S.BUS2.
●Only for Futaba digital servosGYC470 Ratings:(Integrated sensor type rate gyro)
• Gyro sensor: MEMS vibrating structure gyro
• Operating voltage: DC 4.0 V to 8.4 V
• Current drain: 30mA (excluding a servo)
• Operating temperature range: -10 ºC to +45 ºC
• Dimensions: 20.7 x 20.7 x 11.0 mm (0.82 x 0.82 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 GYC470Features of GYC470
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 GYC470:
Mini screwdriver
Sensor tape
Extension cord
Nylon strap
GYC470
Thank you for purchasing the
GYC470 RC car gyro. Compact
and lightweight, the GYC470 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 portGYC470GYC470S.BUS ReceiverSteering servoSteering servoSteering CH1Gyro gain CH3ReceiverGyro gain CH(Receiver)←connect→Port2(GYC470)Remote gain effective. Trimmer(GYC470) becomes LIMIT.Gyro gain CH(Receiver)←It does not connect→Port2(GYC470)Remote gain is invalid. Trimmer(GYC470) becomes GAIN.S.BUS CHSteering --- 1CHGyro gain --- 3CHExtension cordIn 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 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. 1M23N38404Monitor LED display
State Color Move Reference
1. Power ON Orange 2 blinks
2. No servo pulse / Error Red 2 flashes
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 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 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 GYC470 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 GYC470 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 GYC470 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 GYC470'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%-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 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 fullLimit trimmer AdjustmentsD/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 GYC470 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.
(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. The GYC470's servo selection switch of GYC470 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 GYC470 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 GYC470 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 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 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 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%NORMAL 70%AVCS 70%AVCS 100%NORM 50%NORM 100%0%AVCS 50%AVCSNORMALCountersteers against outside force, but cannot correct the skid direction.Corrects the skidding direction and forcefully maintains the heading.Outside forceOutside forceFUTABA CORPORATION
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