RadioLink Byme-DB Instruction Manual

Disclaimer

Thank you for purchasing the RadioLink Byme-DB flight controller. To fully enjoy the benefits of this product and ensure safety, please read the manual carefully and set up the device as instructed. Inappropriate operation may cause property loss or accidental threats to life. Once the RadioLink product is operated, it means the operator understands this limitation of liability and accepts responsibility for the operation. Ensure compliance with local laws and RadioLink's principles. RadioLink cannot analyze product damage or accident reasons and cannot offer after-sales service without a flight record. To the maximum extent permitted by law, RadioLink is not responsible for indirect, consequential, accidental, special, or penal damages, including losses from purchase, operation, or failure of operation, even if informed of potential losses in advance. Consumer rights may vary by country. RadioLink reserves the right to interpret and update these terms without prior notice.

Attention: This product is not a toy and is NOT suitable for children under the age of 14. Adults should keep the product out of the reach of children and exercise caution when operating this product in the presence of children.

Safety Precautions

1. Do not fly in the rain. Rain or moisture can cause flight instability or loss of control. Never fly during lightning. It is recommended to fly in good weather conditions (no rain, fog, lightning, wind).
2. Strictly abide by local laws and regulations and fly safely. Do not fly in no-fly areas such as airports or military bases.
3. Fly in an open field away from crowds and buildings.
4. Do not operate under the influence of alcohol, fatigue, or poor mental state. Operate strictly according to the product manual.
5. Be cautious near electromagnetic interference sources, including high-voltage power lines, transmission stations, mobile phone base stations, and TV broadcast signal towers. Interference may affect wireless transmission performance, potentially interrupting remote control signals and causing a crash.

Byme-DB Introduction

The Byme-DB is applicable to all model airplanes with mixed elevator and aileron controls, including delta wing, paper plane, J10, traditional SU27, SU27 with rudder servo, and F22, etc.

Diagram Description: The Byme-DB unit is a small white module with labeled ports for connections. It features an 'Input 5-6V' port, 'CH3', 'CH4', 'CH2', 'CH1' ports for servos, and an 'SBUS/PPM' receiver port. It also has a 'Gyro Phase' indicator and a 'Button' for Servo Phase Adjustment. The unit is shown connected to a receiver and servos on an aircraft.

Aircraft Examples: Images show various model aircraft types compatible with the Byme-DB, including a green and white delta wing aircraft, a camouflage jet fighter, a red and white biplane, and a yellow flying wing aircraft.

Specifications

• Dimension: 29*25.1*9.1mm
• Weight (With wires): 4.5g
• Channel Quantity: 7 channels
• Integrated Sensor: Three-axis gyroscope and three-axis acceleration sensor
• Signal Supported: SBUS/PPM
• Input Voltage: 5-6V
• Operating Current: 25±2mA
• Flight Modes: Stabilize Mode, Gyro Mode, and Manual Mode
• Flight Modes Switch Channel: Channel 5 (CH5)
• Motor Lock Channel: Channel 7 (CH7)
• Socket Specifications: CH1, CH2, CH4 use 3P SH1.00 sockets; Receiver connect socket is 3P PH1.25; CH3 uses a 3P 2.54mm Dupont Head.
• Transmitters Compatible: All transmitters with SBUS/PPM signal output.
• Models Compatible: All model airplanes with mixed elevator and aileron controls (delta wing, paper plane, J10, traditional SU27, SU27 with rudder servo, F22, etc.).

Installation

Ensure the arrow on the Byme-DB points towards the aircraft's head. Attach the Byme-DB flatly to the fuselage using 3M glue. It is recommended to install it near the aircraft's center of gravity. The Byme-DB includes a receiver connect cable for connecting to the receiver. When connecting servo and ESC cables to the Byme-DB, verify that the servo and ESC cable connectors match the Byme-DB sockets. If they do not match, the user must modify the servo and ESC cables before connecting them.

Diagram Description: A diagram illustrates the Byme-DB unit being mounted on the fuselage of a jet-like aircraft, positioned near the center of gravity. It shows the connection cable linking the receiver to the Byme-DB unit.

Flight Modes Setup

Flight modes are set using Channel 5 (CH5) on the transmitter, supporting three modes: Stabilize Mode, Gyro Mode, and Manual Mode. The manual provides examples using RadioLink T8FB/T8S transmitters.

Diagram Description: Images of RadioLink T8FB/T8S transmitters and a generic remote control show how to set CH5 for Stabilize Mode (Switch UP), Gyro Mode (Switch CENTER), and Manual Mode (Switch DOWN). The corresponding value ranges for CH5 are provided: 1000-1300 for UP (Stabilize), 1300-1700 for CENTER (Gyro), and 1700-2125 for DOWN (Manual).

Motor Safety Lock

The motor can be locked or unlocked using Channel 7 (CH7) on the transmitter. When locked, the motor will not rotate even with the throttle stick at its highest position. To unlock, place the throttle to the lowest position and toggle the CH7 switch. A successful unlock is indicated by two long beeps from the motor. When the motor is locked, the Byme-DB gyro is automatically turned off; when unlocked, the gyro is automatically turned on.

Troubleshooting Unlock Failure: If the motor only beeps once upon toggling CH7 to unlock, the process has failed. Ensure the throttle is at the lowest position. If it still fails, adjust the throttle travel in the transmitter (e.g., from 100 to 101, 102, etc.) until the second long beep is heard. Be sure to stabilize the aircraft during this adjustment to prevent injury from blade rotation.

Diagram Description: Images of transmitters illustrate the CH7 switch positions for Motor Unlocked (UP, value range 1000-1300) and Motor Locked (DOWN, value range 1700-2125).

Transmitter Setup

1. Do not set any mixing in the transmitter when the Byme-DB is mounted on the aircraft, as Byme-DB handles mixing automatically based on flight mode. Transmitter mixing can cause conflicts and affect flight.
2. For RadioLink transmitters, set the transmitter phase: Channel 3 (CH3) - Throttle: Reversed. Other channels: Normal. Non-RadioLink transmitters do not require this phase setting.

Power-on and Gyro Self-test

Each time the flight controller is powered on, the gyro performs a self-test. This test requires the aircraft to be stationary. It is recommended to install the battery and power up the aircraft while it is stationary. After power-on, the green indicator light on Channel 3 will be constantly on. A successful self-test is indicated by slight shaking of the aircraft's control surfaces and solid green indicator lights on other channels (e.g., CH1, CH2).

Notes:

• Indicator light behavior may vary due to differences in aircraft, transmitters, and equipment. Judge self-test completion by control surface movement.
• Always push the throttle stick to the lowest position before powering on the aircraft. Powering on with the throttle stick high will initiate ESC calibration mode.

Attitude Calibration

The Byme-DB requires attitude calibration to ensure balance. Place the aircraft flat on the ground. For beginners, lifting the model's head at a 20-degree angle is advised for smoother flight. Calibration is recorded by the flight controller upon successful completion.

Procedure: Push the left stick (down and left) and the right stick (down and right) simultaneously and hold for over 3 seconds. A single green LED flash indicates successful calibration.

Diagram Description: Illustrations show the specific joystick movements for attitude calibration. Another diagram shows a transmitter screen displaying channel monitor values (CH1, CH2, CH3, CH4) during successful calibration, indicating specific microsecond values (e.g., CH1 2000 μs, CH3 1000 μs).

Note for Non-RadioLink Transmitters: If attitude calibration fails, check and potentially change the channel direction in the transmitter. Ensure the value range for channels 1-4 during calibration is CH1 2000 μs, CH2 2000 μs, CH3 1000 μs, CH4 1000 μs.

Servo Phase

Servo Phase Test

Complete attitude calibration first. After calibration, test the servo phase to prevent abnormal control surface movement. Switch to Manual mode and verify that joystick movements correspond correctly to control surface movements. Mode 2 for transmitters is used as an example.

Diagram Description: Illustrations show transmitter stick movements (aileron stick left/right, elevator stick down) and the corresponding aircraft control surface responses (left aileron lifted/pressed, right aileron lifted/pressed, left/right taileron lifted/pressed).

Servo Phase Adjustment

If control surface movement direction is inconsistent with joystick input, adjust the servo phase by pressing the buttons on the front of the Byme-DB unit.

Notes:

• The green LED of CH3 is always on.
• An always-on or off green LED does not necessarily indicate a reversed phase. Toggle joysticks to check corresponding servo phases. If a servo phase is reversed, adjust it using the buttons on the flight controller, not the transmitter.

Three Flight Modes

Flight modes are set via Channel 5 (CH5) on the transmitter, offering three options: Stabilize Mode, Gyro Mode, and Manual Mode. Examples are provided using Mode 2 for transmitters.

Stabilize Mode

Stabilize Mode provides flight controller balancing, ideal for beginners practicing level flight. The model's attitude (inclination angles) is controlled by joysticks. When a joystick returns to the center, the aircraft levels out. The maximum inclination angle is 70° for rolling and 45° for pitching.

Diagram Description: Illustrations show transmitter stick movements (aileron stick left/right, elevator stick down/up) and the resulting aircraft behavior (model leans left/right, model nose lifts/presses, model levels when stick is centered).

Gyro Mode

In Gyro Mode, the joystick controls the aircraft's rotation speed. The integrated three-axis gyro enhances stability. This is an advanced flight mode where the aircraft will not level out even when the joystick is returned to the center.

Diagram Description: Illustrations show transmitter stick movements (aileron stick left, elevator stick down) and the resulting aircraft behavior (models rotate horizontally, models rotate vertically).

Manual Mode

Manual Mode offers no assistance from the flight controller algorithm or gyro. All flight movements are manual, requiring advanced skills. In this mode, control surfaces will not move without transmitter input, as the gyroscope is not involved in stabilizing the aircraft.

Gyro Sensitivity

The Byme-DB features PID control with a stability margin. For aircraft of different sizes, if gyro correction is insufficient or too strong, pilots can adjust the rudder angle to fine-tune gyro sensitivity.

Technical Support

For assistance, users can contact RadioLink RL via Facebook Messenger. Additional resources include the Byme-DB User Manual and Byme-DB Tutorials.

If problems persist, technical support can be reached via email at after_service@radioLink.com.cn.

This content is subject to change. Download the latest manual for the Byme-DB from https://www.radiolink.com/bymedb_manual.

Thank you for choosing a RadioLink product.