Yu Xiang EC135 Scale Helicopter User Manual

Introduction

This model is a 1:32 scale replica of the EC135 helicopter, featuring highly realistic detailed appearance and cool lighting effects. It is equipped with intelligent flight control, an Optical Flow positioning module, and an altitude hold module. With its dual brushless motor drive, it is especially suitable for beginners and can also serve as an excellent static display model.

Before operating the helicopter, please read this user manual carefully. This manual provides detailed instructions to help you understand the product. Incorrect operation may result in damage to the aircraft model, wasting your valuable time and money.

Accessory List

Caution

Our company reserves the right to change all specifications, warranties, and other accompanying documents. Please contact us for the latest product information.

Warning

Please read the entire user manual before operating the product to familiarize yourself with its functions. Failure to operate the product correctly may result in product damage, personal and property losses, and cause serious injury. This is a complex hobby product that requires careful and sensible operation, as well as some basic mechanical skills. Failure to operate this product responsibly and in a safe manner may result in personal injury, damage to the product, or other property. This product is not intended for use by children without direct adult supervision. This manual contains safety, operational, and maintenance instructions. It is essential to read and follow all instructions and warnings in the manual before assembly or use to ensure proper operation and to avoid damage or serious injury.

Safety Precautions and Warnings

1. Age Recommendation: Not suitable for children under 14 years old. This is not a toy.
2. Always operate your model in an open space away from vehicles, traffic, and people.
3. Follow operating notices, warnings, and any supporting equipment instructions (charger, batteries, etc.) carefully.
4. Keep away from any chemicals; keep small parts and electrical components away from children.
5. Always stay away from water, especially as this product is not waterproof; it will be damaged by moisture.
6. Do not put any part of the model in your mouth, as it may cause serious injury or even death.
7. Do not operate your model using low-voltage transmitter batteries.

Helicopter Specifications

Warnings and Battery Usage Guide

General Warnings:

• Charging: Always monitor the battery while it is charging for maximum safety.
• Supervision: Do not allow children to charge the battery on their own; ensure adult supervision throughout the process.

Battery Functions and Indicators:

For safety purposes, please use the provided standard charger. It is strongly recommended to use the included charger for battery charging. Warning: Lithium batteries may be damaged and may not charge properly when the voltage drops below 7.4V.

Battery Charging:

1. Connect the USB cable to a computer USB port or a power adapter.
2. Connect the USB's other end (Type-C plug for Android) to the battery for charging.
3. During charging, the current battery level indicator will flash, and all four lights will remain solid when charging is complete.
4. Disconnect the charging connection after charging is complete.

Note: It is recommended to use a 5V 2A adapter for charging, as it will enable faster charging.

Battery Status Indicators:

Important Notes: After use, please turn off the battery as prolonged power-on time may shorten the battery lifespan. After flying, remove the battery from the cabin to prevent damage due to over-discharge.

Transmitter Functions

The transmitter features controls for Manual Mode and Optical Flow Mode. Key functions include:

• Throttle/Rudder Joystick
• Aileron/Elevator Joystick
• Power Switch
• Long press to lock/Short press to unlock
• Push button power on, MODE switch
• Trim Buttons (Small/Large)
• Pitch Setting
• One-key Inverted Flight
• Frequency Pairing Button
• One-key Landing

Aircraft and Remote Control Frequency Binding

When purchasing the aircraft kit, the remote control is already bound to the aircraft at the factory and can be used directly. In other cases, please follow the instructions below for binding:

1. Press and hold the right-side trim button of the remote control's auxiliary joystick while turning on the remote control to enter binding mode. The remote control will emit a beep sound upon power on, and the remote control's indicator light will flash quickly, indicating it has entered binding mode.
2. Power on the aircraft and turn on the battery switch. The aircraft's indicator light will flash yellow.
3. Keep the aircraft still within 0.5m from the remote control.
4. The remote control will emit two beeps, and the remote control's indicator light will remain solid. At the same time, the aircraft's indicator light will also return to a solid green, indicating successful binding.
5. If the binding process is unsuccessful, please repeat the above steps to rebind.

Mode Switching: The default factory setting is MODE2 (left-hand throttle). Press the right-side trim button to switch to MODE1, indicated by the remote control's red and blue lights.

Joystick Calibration: To calibrate the remote control's joysticks, power on the remote control by pressing the left-side trim button. The remote control will emit three beeps. Keep the remote control still, and it will automatically calibrate the joysticks.

Trim Buttons: The default setting for the trim buttons is small trim. Press the trim buttons to switch between small trim (two beeps) and large trim (one beep).

Aircraft Status Indicator Light Explanation

• Rapid yellow flashing: Aircraft self-checking. The aircraft should remain stationary until the self-check is completed.
• Solid green: Downward visual optical flow mode.
• Slow green flashing: Poor downward visual environment. Lower the flight altitude or change the flying area.
• Solid red: Manual flight mode. Exercise close attention when flying manually.
• Slow red flashing: Low-level battery warning. Control the aircraft within visual range.
• Rapid red flashing: Critical-level battery warning. The aircraft will initiate an automatic landing.

Gyroscope Calibration

After successful binding, perform the following steps to calibrate the gyroscope: On the remote control (MODE2), hold the left joystick in the upper corner and the right joystick in the lower corner as shown in the diagram for 2-3 seconds. The aircraft's indicator light will flash yellow and then change to solid green, indicating successful calibration.

Important: Place the aircraft on a level surface for accurate calibration. The gyroscope is pre-calibrated at the factory. Recalibration is only necessary if initialization cannot be exited or if there is yaw drift in manual attitude mode.

Manual Motor Start/Stop

Motor Start: Perform the throttle stick action to start the motor. Immediately release the stick after starting the motor. Push the throttle stick upward by more than 50%, and the aircraft will take off.

Motor Stop:

1. After the aircraft has landed, move the throttle stick to the lowest position and hold it for at least 3 seconds to stop the motor.
2. After the aircraft has landed, pull both joysticks inward simultaneously to stop the motor immediately. Release the sticks after the motor has stopped.

Aircraft Locking

Long press the lock button to hear two beeps for locking, and short press for one beep to unlock. Locking should not be performed while the aircraft is in the air, as it may cause the motors to stop and pose a risk of crashing.

First Flight

If you are not familiar with the F06, please take a few minutes to familiarize yourself with its controls before attempting your first flight.

Basic Controls:

• Throttle Up/Descend: Increase altitude.
• Throttle Down/Ascend: Descend.
• Aileron Left/Roll Left: Turn left.
• Aileron Right/Roll Right: Turn right.
• Elevator Forward/Move Forward: Move forward.
• Elevator Backward/Move Backward: Move backward.

Main Control Board Socket Diagram

The main control board has sockets for:

• Tail Lights
• Front Headlights Status Indicator Lights
• Downward Vision (Optical Flow)
• Servo 1, Servo 2, Servo 3
• WIFI

Notes on Downward Vision Mode

Please pay attention to the surrounding flying environment. The vision system only serves as an auxiliary function under limited conditions and cannot replace human judgment and control. Users should constantly be aware of the surrounding environment during flight, maintain control over the aircraft throughout the entire flight, and take responsibility for their actions.

The downward vision system relies on the camera to lock onto objects below and limits the takeoff altitude to 8 meters. Please avoid taking off from rooftops or flying over rooftops, as it may cause the downward vision to fail, resulting in aircraft drift. In such cases, immediately fly the aircraft back or switch to manual stability mode.

The downward vision system cannot recognize surfaces without textured features and cannot function properly in environments with insufficient or excessive lighting. The following scenarios are where the downward vision system cannot work:

• Solid color surfaces (e.g., solid black, solid white, solid red, solid green)
• Surfaces with strong reflections or reflections
• Water surfaces or surfaces of transparent objects
• Surfaces of moving objects (e.g., above crowds, bushes, and grasses swaying in strong winds)
• Scenes with rapidly changing lighting conditions
• Surfaces that are exceptionally dark or exceptionally bright
• Surfaces of materials that have strong absorption or reflection of infrared

Manual Mode Flight

Pressing the Manual Mode button will disable the optical flow flight mode. In this mode, the aircraft's status indicator light will remain solid red, and the altitude restriction will be lifted. The maximum flight speed can reach up to 10 meters per second. Please closely monitor the aircraft and operate with caution. Pressing the throttle adjustment button on the remote control again will activate the optical flow mode, indicated by a solid green status indicator light on the aircraft.

One-Key Landing

During flight, long-press the One-Key Landing button, and the aircraft will initiate a landing at its current position. While landing, the remote control can still be used to control the aircraft. Pushing the throttle up during the landing process will cancel the landing. Alternatively, pressing the One-Key Landing button again will cancel the one-key landing function.

Expert Inverted Flight Mode

This mode is designed for 3D aerobatic inverted flight training and should be conducted in open outdoor areas with calm or light wind conditions.

In manual mode, with the flight altitude above 9 meters, press the upper right One-Key Inverted Flight button. The remote control will emit two beeps. Quickly push the elevator stick forward or backward and immediately return it to the center position. The aircraft will automatically perform a 180-degree roll and enter inverted flight hover. In this mode, the helicopter's control input is the same as that of a 3D helicopter (pushing the throttle stick up will make the aircraft descend, pushing the elevator stick forward will make the aircraft move towards the tail).

Pressing the One-Key Inverted Flight button again and quickly moving the elevator stick will transition the aircraft from inverted flight to normal flight mode, restoring normal flight behavior.

Pitch Setting

When users replace servos or other major components, it may alter the pitch setting. Correct pitch setting contributes to stable flight. Please follow the steps below for pitch setting:

1. Power on the aircraft and bind it with the remote control.
2. Long-press the lock button on the remote control to lock the aircraft with two beeps. Then long-press the pitch setting button to enter pitch setting mode with two beeps.
3. Use the joystick to adjust the corresponding servo until the aircraft's swashplate is level and the rotor blade angle is 0 degrees. Then, short-press the lock button on the remote control to unlock with a beep, exit the pitch setting mode, and save the settings.

Note: Pitch setting should be done under the guidance of an experienced individual. Incorrect pitch setting can result in reduced flight performance.

Common Troubleshooting