FLYSKY FGr8B 2.4GHz 8-Channel Receiver Instruction Manual

1. Introduction

The FLYSKY FGr8B is a compact and lightweight 2.4GHz 8-channel receiver designed for use with various RC models, including cars and boats. It features a single-antenna bidirectional transmission system and is capable of outputting PWM, PPM, and i-bus signals. This receiver is fully compatible with all AFHDS 3 series transmitters and RF modules, such as the PL18, NB4, NB4 Lite, and FRM302.

Its small size and minimal weight ensure that it adds no significant burden to your RC model, making it an ideal choice for enthusiasts seeking reliable and efficient control.

2. Specifications

Package Dimensions:

• Size: 8 x 5 x 2cm
• Weight: 59g

3. Package Contents

• 1 x FLYSKY FGr8B Receiver

4. Product Overview

The FGr8B receiver features a compact design with clearly labeled ports and indicators for easy setup and operation. Refer to the diagram below for a detailed overview of the receiver's components and their functions.

Component Identification:

1. CH1 (PWM/PPM Output)
2. CH2-CH4 (PWM Output)
3. CH5 (NPD)
4. CH6 (NPC)
5. CH7 (NPB)
6. i-bus in (CH8/NPA)
7. VCC/BVD (Battery Voltage Detection Power Supply Interface)
8. Antenna
9. BIND Button
10. LED Indicator
11. S (Signal Pin)
12. + (Positive Power Terminal)
13. - (Power Ground)
14. BVD Harness
15. Connect to Battery Positive Pole
16. Connect to Battery Negative Pole

Important Notes:

• The added new NPA/B/C/D and BVD functions will be available with a firmware update (released November 2020). The BVD harness (17) will not function until the new firmware has been installed.
• The i-bus/s.bus terminal (8) will be replaced with the CH8 (NPA) function after the firmware upgrade.

5. Setup and Installation

The FGr8B receiver's compact size and lightweight design facilitate easy installation in various RC models. Follow these general steps for installation:

1. Mounting: Securely mount the receiver in your RC model using double-sided tape or other appropriate mounting hardware. Ensure it is placed away from high-current wires, motors, and other potential sources of interference.
2. Antenna Placement: Position the single antenna in a location that provides optimal signal reception, typically extending away from carbon fiber or metal parts of the model. Avoid bending the antenna sharply.
3. Power Connection: Connect the receiver to a stable power source within the specified input voltage range of 3.5-9V DC. Refer to the Product Overview diagram (Figure 1) for the VCC/BVD ports (9) and positive/negative terminals (14, 15).
4. Servo/ESC Connections: Connect your servos, Electronic Speed Controller (ESC), and other components to the appropriate PWM channels (1-7) or the i-bus/CH8 port (8) as required by your model's configuration.

6. Binding Procedure

To establish communication between your FGr8B receiver and an AFHDS 3 compatible transmitter, you must perform a binding procedure. The receiver features a dedicated 'Bind' button (11) for this purpose.

1. Power Off Transmitter: Ensure your AFHDS 3 transmitter is powered off.
2. Receiver Power & Bind: While holding down the 'Bind' button (11) on the FGr8B receiver, power on the receiver. The LED indicator (12) should start flashing, indicating it is in binding mode.
3. Transmitter Bind Mode: Power on your transmitter and navigate to its binding menu. Select the bind option for your model.
4. Confirmation: Once the binding is successful, the LED indicator on the receiver will stop flashing and remain solid. This indicates a successful connection.
5. Test: Power cycle both the transmitter and receiver, then test all control surfaces and functions to ensure proper operation before use.

7. Operating Instructions

Once the receiver is successfully bound to your transmitter, it will begin receiving control signals. The FGr8B supports multiple output types:

• PWM Output: Standard Pulse Width Modulation for direct connection to servos and ESCs. Channels 1-7 provide PWM output.
• PPM Output: Pulse Position Modulation, often used for flight controllers or other devices that accept a single-wire signal for multiple channels. Channel 1 can output PPM.
• i-bus Output: A digital serial bus protocol that transmits all channel data over a single wire, reducing wiring complexity. The i-bus in (CH8/NPA) port (8) is used for this.

Ensure your flight controller or other connected devices are configured to accept the chosen signal type (PWM, PPM, or i-bus) from the FGr8B receiver.

8. Maintenance

To ensure the longevity and optimal performance of your FGr8B receiver, follow these maintenance guidelines:

• Environmental Conditions: Operate and store the receiver within the specified temperature range of -10℃ to +60℃ and humidity limit of 20%-95%. Avoid extreme temperatures, direct sunlight, and high humidity.
• Cleaning: Keep the receiver clean and free from dust, dirt, and moisture. Use a soft, dry cloth for cleaning. Do not use solvents or abrasive cleaners.
• Physical Protection: Protect the receiver from physical shock and vibration. Ensure all connections are secure and free from strain.
• Firmware Updates: The FGr8B supports online firmware updates. Regularly check the official FLYSKY website for the latest firmware versions to ensure access to new features and performance improvements. Refer to the Product Overview section for details on features enabled by firmware updates.

9. Troubleshooting

• Receiver Not Binding:
  • Ensure both the receiver and transmitter are powered on correctly and within range.
  • Verify that the transmitter is set to AFHDS 3 protocol.
  • Confirm the binding procedure steps are followed precisely, especially holding the bind button while powering on the receiver.
  • Check the power supply to the receiver (3.5-9V DC).
• No Signal Output / Incorrect Functionality:
  • Ensure the receiver is successfully bound (solid LED indicator).
  • Verify that servos/ESCs are connected to the correct PWM channels.
  • If using i-bus, confirm your flight controller or device is configured for i-bus input.
  • Check for any physical damage to the receiver or wiring.
• New Functions (NPA/B/C/D, BVD) Not Working:
  • These functions require a firmware update. Ensure your receiver has the latest firmware installed (November 2020 or newer).
  • The BVD harness (17) will only function after the firmware update.
  • The i-bus/s.bus terminal (8) changes to CH8 (NPA) after the firmware upgrade.
• General Issues:
  • If you encounter persistent problems, try re-binding the receiver.
  • Ensure there is no significant interference from other electronic devices.
  • If issues persist, please contact customer support for assistance.

10. User Tips

• Firmware First: Before initial use, consider checking for and applying any available firmware updates for your receiver. This ensures you have the latest features and bug fixes, especially for new functions like NPA/B/C/D and BVD.
• Compatibility Check: Always confirm that your transmitter is an AFHDS 3 model (e.g., PL18, NB4, NB4 Lite, FRM302) to ensure full compatibility and proper operation with the FGr8B receiver.
• Application: This receiver is primarily designed for RF Modules and Transmitters in RC car and boat models.

11. Warranty and Support

All FLYSKY FGr8B receivers come with a 1-year guarantee from the date of purchase. This warranty covers defects in materials and workmanship under normal use.

If your purchase does not meet merchantable quality, is not fit for its intended purpose, or does not match the product description, we are committed to resolving your issues.

For any problems, questions, or support needs, please contact the store or seller where you purchased the product in a timely manner. We are dedicated to providing a satisfactory solution.

12. Compliance and Warnings

⚠ WARNING: This product can expose you to chemicals including phthalates (DEHP), which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov.