Introduction
This manual provides comprehensive instructions for the Radiolink F722 Flight Controller and the Flycolor 55A 4-in-1 Electronic Speed Controller (ESC) stack. Designed for FPV racing drones, quadcopters, and other RC aircraft, this stack offers high performance and versatility with support for Betaflight and INAV firmware.
1. Specifications
1.1 Radiolink F722 Flight Controller Specifications
| Feature | Specification |
|---|---|
| Firmware Type | Betaflight, INAV |
| Firmware Name | RADIOLINKF722 |
| Processor | STM32F722RET6 |
| Gyro | ICM42688 |
| Barometer | BMP280/DPS310 (SPL06-001) |
| OSD Module | AT7456E (Integrated) |
| RC In Signal Input | SBUS/CRSF |
| Input Voltage | 3-6S |
| BEC | 3.3V/300mA, 4.5V/500mA, 5V/3A, 12V/3A |
| 12V BEC Switch | Support (USER1) |
| Channel Output | M1 - M8 |
| HD Digital Video Transmission | Support plug-and-play |
| Analog Video Transmission | Support plug-and-play |
| Battery Scale | 110 |
| UART Port | 5 |
| USB Port | 1 (Type-C) |
| Blackbox | 128MB, record and store flight logs |
| ESC Features/I2C | Support |
| LED Strip | Support, have LED strip soldering pads |
| Buzzer | Support, have a buzzer soldering pads |
| Adaptable Models | 2-8 axis multi-rotor (including X8 models), Airplane, A-tail Quad, Bicopter, Custom Airplane, Custom Tricopter, Dualcopter, Flying-wing, Gimbal, Helicopter120, HEL+, HEX H, HEX X, OCTO FLAT+, OCTO FLAT X, OCTO X8, OCTO X8+, PPM to Servo, Quad+, Quad X, Quad X 1234, Singlecopter, Tricopter, V-tail Quad, Y4, Y6 |
| Dimension | 30.5*30.5mm |
| Weight | 9.5g |
1.2 Flycolor 55A 4-in-1 ESC Specifications
| Feature | Specification |
|---|---|
| MCU | EFM8BB21F16G (8-bit C8051 core) |
| Continuous Current | 45 A - 65 A |
| Operating Frequency | 50 MHz maximum |
| ESC Firmware | A-H-30 (BLS-04 4in1) |
| Number of Lithium Batteries | 3-6 S |
| Mounting Hole | 1.2*1.2 in, M3 |
| Parameter Adjustment Software | Bluejay Configurator or BLHeliSuite |
| Weight | 0.56 oz (approx. 15.8g) |
2. Package Contents
2.1 Radiolink F722 Only Package
The 'Radiolink F722 Only' package includes:
- F722 Flight Controller * 1
- ESC Connect Cable * 2
- Camera Connect Cable * 1
- ELRS Receiver Connect Cable * 1
- Analog Video Transmission Connect Cable * 1
- GPS Connect Cable * 1
- R8SM Receiver Connect Cable * 2
- Receiver Connect Cable * 2
- Instruction Manual * 1
- Package Box * 1
2.2 F722 4-in-1 ESC Stack Package
The 'F722 4in1 ESC Stack' package includes:
- F722 Flight Controller * 1
- 4-in-1 ESC * 1
- Camera Connect Cable * 1
- ELRS Receiver Connect Cable * 1
- Analog Video Transmission Connect Cable * 1
- GPS Connect Cable * 1
- Receiver Connect Cable * 2
- ESC Connect Cable * 2
2.3 Flycolor 55A 4-in-1 ESC Only Package
The '4in1 55A ESC' package includes:
- ESC * 1
- XT60 Power Connector * 1
- FC/ESC Connect Cable * 1
- Low ESR Capacitor * 1
- O-Ring * 5
- Silicone Vibration Absorber * 1
3. Setup
3.1 Component Overview
The Radiolink F722 Flight Controller and Flycolor 55A 4-in-1 ESC form a compact and powerful stack for various RC applications. The F722 FC features a STM32F722RET6 main processor, ICM42688 gyroscope, BMP280/DPS310 barometer, and an integrated OSD module. The Flycolor 55A 4-in-1 ESC is designed for 3-6S LiPo batteries and supports various throttle signals.
3.2 Wiring and Connections
Careful wiring is crucial for the proper functioning of your RC aircraft. The F722 FC offers multiple interfaces for connecting various peripherals.
The F722 FC supports both CADDX HD Digital and DJI HD Digital Image Transmission systems with plug-and-play compatibility. Refer to the diagrams below for specific wiring instructions.
For a complete system integration, the F722 FC can be combined with various Radiolink components and other third-party devices to create a cost-effective solution for high-speed aerial photography and cinematography.
3.3 Firmware Installation and Configuration
The Radiolink F722 FC supports both Betaflight and INAV firmware. Users can specify their preferred firmware before shipment. If no preference is stated, the default factory firmware will be flashed.
Configuration can be performed using the Betaflight Configurator or INAV Configurator software on a PC or mobile phone. For the ESC, use Bluejay Configurator or BLHeliSuite for parameter adjustment.
4. Operating Instructions
4.1 FPV Flight with OSD
The integrated OSD module allows for real-time display of critical flight information such as flight mode, distance, GPS satellites, longitude, latitude, home direction, GPS speed, and battery voltage. This enhances situational awareness during FPV flight.
4.2 ESC Telemetry
The ESC supports information telemetry, providing data on motor status and performance. It is compatible with two-way DShot, OneShot, and PWM signals.
4.3 Adaptable Models
The F722 Flight Controller is adaptable to a wide range of models including 2-8 axis multi-rotors (including X8 models), airplanes, A-tail quads, bicopters, custom airplanes, custom tricopters, dualcopters, flying-wings, gimbals, Helicopter120, HEL+, HEX H, HEX X, OCTO FLAT+, OCTO FLAT X, OCTO X8, OCTO X8+, PPM to Servo, Quad+, Quad X, Quad X 1234, Singlecopter, Tricopter, V-tail Quad, Y4, Y6.
5. Maintenance
5.1 General Care
Keep the flight controller and ESC clean and free from dust and debris. Use a soft, dry brush or compressed air for cleaning. Avoid exposing the components to moisture or extreme temperatures.
5.2 Connection Inspection
Regularly inspect all wiring and solder joints for any signs of wear, corrosion, or loose connections. Secure any loose connections immediately.
5.3 Firmware Updates
Periodically check the official Radiolink website for firmware updates. Keeping your firmware up-to-date can improve performance and add new features.
6. Troubleshooting
6.1 Common Issues and Solutions
- No Power/Intermittent Power: Check all power connections, including the battery, XT60 connector, and BEC output. Ensure the input voltage is within the specified 3-6S range.
- Motors Not Spinning/Incorrect Direction: Verify ESC connections to the flight controller and motor wiring. Use the Betaflight/INAV configurator to check motor output and direction. Calibrate ESCs if necessary using Bluejay or BLHeliSuite.
- No OSD Display: Ensure the OSD module is correctly configured in Betaflight/INAV. Check video transmission connections (digital or analog) and ensure your FPV goggles/monitor are receiving a signal.
- Unstable Flight: Review PID settings in Betaflight/INAV. Ensure the flight controller is securely mounted and vibration-isolated. Check for any loose propellers or damaged motors.
- Receiver Not Responding: Verify receiver wiring (SBUS/CRSF) and binding with your transmitter. Check receiver settings in the flight controller software.
7. User Tips
- For optimal performance, ensure proper vibration isolation for the flight controller. Use the provided silicone vibration absorbers.
- Always double-check wiring diagrams before making connections to prevent damage to components.
- Familiarize yourself with the Betaflight or INAV configurator software for advanced tuning and customization.
- Consider using a smoke stopper during initial power-up after assembly to prevent short-circuit damage.
8. Warranty and Support
For detailed warranty information, technical support, and the latest resources, please visit the official Radiolink website: https://www.radiolink.com/f722.
