1. Introduction
The FLYSKY FS-R4P is a compact 4-channel 2.4GHz receiver designed for RC car applications. It utilizes the advanced ANT protocol, ensuring reliable communication with compatible FLYSKY transmitters such as the FS-G7P and FS-ST8. This manual provides essential information for the proper setup, operation, and maintenance of your FS-R4P receiver.
2. Safety Information
Please read and understand all safety warnings and precautions before using this product. Failure to do so may result in injury or damage to the product or property.
- Always ensure the receiver is securely mounted in your RC vehicle to prevent damage from vibrations or impacts.
- Verify correct polarity when connecting power to the receiver. Incorrect connections can cause permanent damage.
- Operate your RC vehicle in open areas, away from people, obstacles, and other radio interference sources.
- Keep the receiver away from water and moisture, as it is only IPX4 rated (splash resistant).
- Regularly inspect all wiring and connections for wear or damage.
3. Package Contents
- 1 x FLYSKY FS-R4P Receiver
4. Specifications
| Feature | Specification |
|---|---|
| Product Model | FS-R4P |
| Compatible Transmitters | FS-G4P, FS-G7P (with ANT protocol) |
| Model Type | Cars |
| PWM Channels | 4 |
| Wireless Frequency | 2.4GHz |
| Wireless Protocol | ANT |
| Range | 100~300m (Ground) |
| Antenna Type | Built-in single antenna |
| Power Input | 3.5-8.4V |
| Working Current | 70mA (at 5V) |
| RSSI | Not Supported |
| Data Port | PWM |
| Temperature Range | -10 ℃ to +60 ℃ |
| Humidity Range | 20% - 95% |
| Online Update | No |
| Dimensions | 22.6 x 20.6 x 25.5mm |
| Weight | 6g |
| Certification | CE, FCC, UKCA |
5. Setup and Installation
5.1 Receiver Overview
The FS-R4P receiver features 4 PWM channels and a power input. The channels are typically labeled CH1 to CH4, and there is a dedicated port for power/battery connection. The built-in single antenna is designed for optimal signal reception.
5.2 Physical Installation
- Choose a suitable location in your RC car that is protected from impacts, vibrations, and moisture.
- Use double-sided foam tape or a receiver box to securely mount the receiver.
- Ensure the built-in antenna is positioned away from large metal objects or carbon fiber parts that could shield the signal.
5.3 Wiring Connections
Connect your servos, ESC, and power source to the receiver's ports as follows:
- CH1-CH4: Connect your servos (steering, throttle, etc.) to the corresponding PWM channels. Ensure the signal wire (usually white or orange) is connected to the 'S' pin, positive (red) to '+', and negative (black or brown) to '-'.
- Power Input: The receiver can be powered via the ESC's BEC (Battery Eliminator Circuit) connected to any channel, or directly from a separate battery pack within the 3.5-8.4V range.
5.4 Binding the Receiver
To establish communication between the FS-R4P receiver and your compatible FLYSKY ANT protocol transmitter, follow these general binding steps:
- Ensure your transmitter is turned off.
- Connect a bind plug (if required by your transmitter/receiver combination, though many modern Flysky receivers have a bind button) to the B/VCC port on the receiver, or locate the bind button.
- Power on the receiver (e.g., by connecting the ESC with the main battery, or a separate receiver battery). The receiver's LED should start flashing rapidly, indicating it's in bind mode.
- While holding the bind button on your transmitter (or following its specific bind procedure), turn on the transmitter.
- The receiver's LED should stop flashing and become solid, indicating a successful bind.
- Turn off both the receiver and the transmitter.
- Remove the bind plug (if used).
- Turn on the transmitter first, then power on the receiver. The receiver's LED should be solid, confirming a successful connection.
Note: Refer to your specific FLYSKY transmitter's manual for detailed binding instructions, as procedures may vary slightly.
6. Operation
Once the receiver is successfully bound to your transmitter and all components are connected, you can begin operating your RC car. The receiver will translate the signals from your transmitter into commands for the servos and ESC, controlling steering, throttle, and any other connected functions.
- Always perform a range check before operating your vehicle at a distance.
- Ensure all control surfaces respond correctly to transmitter inputs (e.g., steering turns left when you steer left).
- Monitor the receiver's power supply to ensure it remains within the specified voltage range (3.5-8.4V) during operation.
7. Maintenance
Proper maintenance will extend the life of your FS-R4P receiver:
- Keep the receiver clean and free from dust, dirt, and debris.
- Avoid exposing the receiver to extreme temperatures or direct sunlight for prolonged periods.
- Regularly check all connections for looseness or corrosion.
- If the receiver gets wet, disconnect power immediately and allow it to dry completely before re-applying power.
8. Troubleshooting
If you encounter issues with your FS-R4P receiver, try the following troubleshooting steps:
- No response from receiver:
- Check power connections to ensure the receiver is receiving adequate voltage (3.5-8.4V).
- Verify the receiver is correctly bound to the transmitter (solid LED indicates successful bind).
- Ensure the transmitter is turned on and has sufficient battery power.
- Check for damaged wires or connectors.
- Intermittent signal loss:
- Ensure the receiver's antenna is not obstructed by metal or carbon fiber parts.
- Perform a range check to confirm adequate signal strength.
- Check for external interference sources (e.g., Wi-Fi routers, other 2.4GHz devices).
- Ensure the transmitter's battery is fully charged.
- Servos not moving correctly:
- Verify servos are correctly plugged into the appropriate channels on the receiver.
- Check for mechanical binding in the servo linkage.
- Ensure the servo itself is not damaged.
9. User Tips
- For optimal performance, keep the receiver's antenna as straight as possible and away from other electronics.
- Always power on your transmitter before the receiver, and power off the receiver before the transmitter, to prevent unexpected movements.
- Consider using a small piece of heat shrink tubing or liquid electrical tape over exposed solder joints if you are modifying connections, to prevent short circuits.
10. Warranty and Support
FLYSKY products are manufactured to high-quality standards. For any issues or technical support, please contact your retailer or the official FLYSKY support channels. Keep your proof of purchase for warranty claims.
