GoolRC Flysky FGR8B 2.4GHz 8CH Receiver Instruction Manual

1. Introduction and Overview

The GoolRC Flysky FGR8B is an 8-channel 2.4GHz remote control receiver designed for use with RC cars and boats. It utilizes Flysky's third-generation Automatic Frequency Hopping Digital System (AFHDS 3) for reliable communication. This receiver supports PWM, PPM, and i-Bus signal outputs and is compatible with various AFHDS 3 transmitters and RF modules, including PL18, NB4, NB4 Lite, and FRM302.

Image: The GoolRC Flysky FGR8B 8-channel receiver, suitable for RC car and boat applications.

Image: The FGR8B receiver demonstrating compatibility with various AFHDS 3 transmitters such as PL18, NB4, NB4 Lite, and FRM302.

2. Product Components and Pinout

Understanding the receiver's layout is essential for proper connection and operation. The FGR8B receiver features multiple channels and connection points as detailed below.

Image: Detailed diagram of the FGR8B receiver showing its various ports and components.

Pinout Description:

• [1] CH1 (PWM/PPM): Channel 1 output, supports PWM or PPM signals.
• [2]-[4] CH2-CH4: Channels 2-4 outputs for PWM signals.
• [5] CH5 (NPD): Channel 5 output.
• [6] CH6 (NPC): Channel 6 output.
• [7] CH7 (NPB): Channel 7 output.
• [8] i-Bus in (CH8/NPA): i-Bus input, also functions as Channel 8 (NPA).
• [9] VCC/BVD (Battery Voltage Detection): Power supply interface, also used for battery voltage detection.
• [10] Antenna: Receiver antenna for signal reception.
• [11] BIND: Binding button/port for pairing with a transmitter.
• [12] LED: Status indicator light.
• [13] S (Signal Pin): Signal pin.
• [14] + (Positive power terminal): Positive power connection.
• [15] - (Power ground): Power ground connection.
• [16] BVD harness: Harness for Battery Voltage Detection.
• [17] Connect to battery positive pole: Connection point for the positive terminal of the battery.
• [18] Connect to battery negative pole: Connection point for the negative terminal of the battery.

Important Tips:

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

3. Setup and Binding

Follow these steps to connect and bind your GoolRC Flysky FGR8B receiver to your compatible AFHDS 3 transmitter.

3.1 Initial Connection

1. Connect the receiver to your RC model's Electronic Speed Controller (ESC) or power source. Ensure correct polarity to avoid damage.
2. Connect your servos or other control components to the appropriate channels (CH1-CH8) on the receiver. Refer to the pinout diagram in Section 2.
3. Ensure the transmitter is powered off during initial wiring.

3.2 Binding Process

Binding establishes a secure communication link between your receiver and transmitter.

1. Power on your transmitter and put it into binding mode. The specific steps for binding mode vary by transmitter model; consult your transmitter's manual.
2. While holding down the BIND button on the FGR8B receiver (labeled [11] in the diagram), power on the receiver.
3. The LED indicator ([12]) on the receiver should flash rapidly, indicating it is in binding mode.
4. Once the binding is successful, the LED on the receiver will stop flashing and remain solid.
5. Turn off both the receiver and the transmitter.
6. Power on the transmitter first, then the receiver. The receiver's LED should illuminate solid, confirming a successful bind.

4. Operating the Receiver

After successful binding, the receiver is ready for operation. The FGR8B receiver outputs PWM, PPM, or i-Bus signals depending on the configuration and connected devices. Ensure your transmitter and receiver are compatible for optimal performance.

Image: Compatibility table for AFHDS 3 transmitters and receivers, indicating pairing status.

Note: The table above indicates compatibility. A '√' means match, and '✕' means semi-compatible (basic channel output only). Some transmitters may require specific firmware or modules for full functionality with certain receivers.

5. Maintenance

Proper maintenance ensures the longevity and reliable performance of your FGR8B receiver.

• Keep Dry: Avoid exposing the receiver to moisture or liquids. Water can cause short circuits and damage internal components.
• Clean Gently: Use a soft, dry cloth to clean the receiver. Do not use harsh chemicals or solvents.
• Protect from Impact: Mount the receiver securely within your RC model to protect it from vibrations and impacts during operation.
• Antenna Placement: Ensure the antenna is positioned correctly and not obstructed by carbon fiber or metal parts, which can reduce signal range.
• Storage: Store the receiver in a cool, dry place when not in use.

6. Troubleshooting

If you encounter issues with your FGR8B receiver, refer to the following common problems and solutions.

• No Signal / No Response:
  • Ensure the receiver is correctly powered and the LED is solid.
  • Verify that the receiver is properly bound to the transmitter. Re-attempt the binding process if necessary.
  • Check all wiring connections between the receiver, ESC, and servos for correct polarity and secure fit.
  • Confirm the transmitter is powered on and functioning correctly.
• Intermittent Connection / Poor Range:
  • Check the receiver antenna for damage or improper placement. Ensure it is extended and not shielded by conductive materials.
  • Avoid operating in areas with high radio interference (e.g., near large metal structures, Wi-Fi routers, or other 2.4GHz devices).
  • Ensure the transmitter battery is fully charged.
  • Consider updating the receiver and transmitter firmware to the latest versions for improved performance and stability.
• Incorrect Channel Output:
  • Verify that servos and other components are connected to the correct channels on the receiver.
  • Check your transmitter's channel mapping and settings to ensure they match the desired output.
  • If using i-Bus, ensure your flight controller or other device is configured to receive i-Bus signals.
• Receiver LED Not Illuminating:
  • Check the power supply to the receiver. Ensure the voltage is within the specified range (3.5-9V DC).
  • Inspect for any physical damage to the receiver or power wires.

7. Specifications

Detailed technical specifications for the GoolRC Flysky FGR8B receiver are provided below.

Image: Table summarizing the product specifications of the FGR8B receiver.

Image: The FGR8B receiver displaying its compact dimensions of 35mm x 23.3mm x 13.3mm.

8. Warranty and Support

GoolRC provides a warranty for this product. If you encounter any problems or require assistance, please contact the store where you purchased the product. They will provide a satisfactory solution in accordance with their warranty policy.

For further technical support or inquiries, refer to the official GoolRC website or contact their customer service channels.