1. Introduction
The Radiolink Crossflight Flight Controller is a versatile and compact control unit designed for a wide range of remote-controlled models, including FPV drones, multi-copters, airplanes, helicopters, cars, and boats. Featuring an integrated OSD module, advanced sensors (BMI270 Gyro & Accelerometer, LPS22HB Barometer, VCM5883L Compass), and compatibility with various GPS modules, it offers precise control and stable flight performance. Its compact size and software-based vibration damping contribute to extended flight times and enhanced reliability. This manual provides essential information for setting up, operating, maintaining, and troubleshooting your Crossflight Flight Controller.
2. Setup
2.1 Package List
Verify that all items are present in your package:
- Radiolink Crossflight Flight Controller V1.1
- Connecting Wires (various types for different connections)
- USB Type-C Cable
- Power Module
- User Manual (printed or digital)
- Mounting Accessories (e.g., double-sided tape)


2.2 Connectors and Protocols
The Crossflight Flight Controller features various ports for connecting peripherals:

- TELEM 1 & TELEM 2: Connect to Image Transmission and Data Transmission / PRM-03 (Mavlink UART and CRSF).
- USB: Connect to a computer for setting up parameters (Type-C port).
- POWER: Connects to the Power Module.
- RC IN: Connects to Receiver/Buzzer (PPM/SBUS).
- BUZZER: Connects to the Buzzer.
- OSD: On-Screen Display module integrated.
- GPS/I2C: Connects to GPS / Ultrasonic Sensor / Expansion Board.
- ESC (PWM 1-10): Main output to connect to ESC/Servo (PWM).
- Status LED: Indicates flight controller status.
- Power LED: Indicates power status.
2.3 GPS Wiring
For connecting a GPS module like the TS100, refer to the following wiring diagram. Ensure correct polarity and pin assignments.

2.4 Software Setup and Firmware
The Crossflight Flight Controller supports multiple mission planners for parameter configuration:
- Radiolink Mission Planner for Crossflight
- ArduPilot Mission Planner
- QGroundControl (QGC)
Important: Firmware updates can only be performed using the Radiolink Mission Planner and firmware specifically from Radiolink. Always download the latest software and firmware from the official Radiolink website: https://radiolink.com/crossflight

2.5 Compass Calibration
Proper compass calibration is crucial for accurate navigation and stable flight. Refer to the video below for detailed instructions on how to calibrate the compass of your Crossflight Flight Controller and GPS TS100.
3. Operating
3.1 Flight Modes
The Crossflight Flight Controller supports various flight modes to suit different piloting skill levels and application needs. Common modes include:
- Altitude Hold Mode: Maintains a stable altitude, allowing the pilot to focus on horizontal movement.
- Stabilize Mode: Provides basic stabilization, returning the aircraft to a level attitude when controls are centered.
- Acro Mode: Offers full manual control without self-leveling, suitable for experienced pilots.

3.2 Integrated OSD Module
The integrated OSD (On-Screen Display) module provides real-time flight information directly on your video feed, eliminating the need for an external OSD unit. This includes critical data such as flight direction, position, battery voltage, and more, enhancing situational awareness during flight.

3.3 Adaptable Applications
The Crossflight Flight Controller is highly adaptable and can be used across various platforms and industries due to its 10-channel PWM output and robust design.



4. Maintenance
To ensure the longevity and optimal performance of your Crossflight Flight Controller, follow these maintenance guidelines:
- Keep Clean: Regularly clean the flight controller and its connections to prevent dust and debris buildup, which can affect sensor performance and electrical contacts. Use a soft, dry brush or compressed air.
- Inspect Connections: Periodically check all wiring and connectors for secure fit and signs of wear or damage. Loose connections can lead to intermittent issues or complete failure.
- Physical Inspection: Examine the flight controller for any physical damage, such as cracks in the board, bent pins, or damaged components. Replace damaged parts immediately.
- Software Updates: Keep the firmware updated to the latest version available from the Radiolink official website to benefit from performance improvements and bug fixes.
- Storage: When not in use, store the flight controller in a dry, cool environment, away from direct sunlight and extreme temperatures.
5. Troubleshooting
If you encounter issues with your Crossflight Flight Controller, consider the following troubleshooting steps:
- No Power/No LED Indicator:
- Check power supply connections and ensure the power module is correctly wired and functioning.
- Verify the input voltage is within the specified 2-12S range.
- Inspect the USB cable if powering via USB.
- Unstable Flight/Drifting:
- Perform a full calibration of all sensors (accelerometer, gyroscope, compass).
- Check for excessive vibrations in the airframe; ensure the flight controller is properly mounted with vibration damping.
- Verify ESC calibration and motor rotation direction.
- Review PID settings in your mission planner.
- GPS Not Locking/Inaccurate Position:
- Ensure the GPS module is connected correctly and has a clear view of the sky.
- Perform compass calibration as described in Section 2.5.
- Check GPS module settings in the mission planner (e.g., baud rate, protocol).
- Avoid areas with strong magnetic interference or tall buildings.
- OSD Not Displaying Data:
- Verify OSD settings in the mission planner.
- Check video signal connections between the camera, flight controller, and video transmitter.
- Connection Issues with Mission Planner:
- Ensure the correct COM port is selected and drivers are installed.
- Try a different USB cable or USB port.
- Restart the mission planner software and your computer.
For persistent issues, consult the Radiolink official website for updated documentation or contact their support.
6. Specifications
6.1 General Flight Controller Specifications
| Feature | Specification |
|---|---|
| Processor | HC32F4A0PITB |
| Gyro & Accelerometer | BMI270 |
| Barometer | LPS22HB |
| Compass | VCM5883L |
| OSD Module | Integrated |
| PWM Output | 10 Channels |
| Mavlink UART | 2 (without CTSRTS) |
| USB Port | 1 (Type-C) |
| GPS UART or I2C Port | 1 |
| RC In Signal Input | PPM/SBUS |
| RSSI Output | Support |
| ESC Protocol | PWM, DShot, OneShot |
| RTK/Redevelopment | Support |
| FRAM | Without FRAM, uses internal flash for parameters (2617 waypoints for multi-copters, 2623 for airplanes, cars, boats) |
| Buzzer | 1 |
| Switch | None |
| Dimension | 39.7*39.7*12.1mm (1.56"*1.56"*0.48") |
| Weight | 16.5g (0.58oz), 54g (1.9oz with all connect wires) |
| Material | Plastic (PC) |
| Recommend Age | 14+y |
6.2 Power Module Specifications
| Feature | Specification |
|---|---|
| Weight | 16g (0.56oz) without wire |
| Input Voltage | 2-12S |
| Maximum Detection Current | 90A |
| Output Voltage (BEC) | 5.3V±0.2V |
| Output Current (BEC) | 2A |
| Single ESC Max Detection Current | 22.5A |
| USB Voltage | 5V±0.3V |
| Servo Voltage | Not applicable |
| Operating Temperature | -40~80℃ |
6.3 GPS Module Specifications (General)
| Feature | Specification |
|---|---|
| Protocol | Default NMEA; auto-switches to FC protocol when connected to SE100, TS100, TS100 v2.0. Reverts to NMEA when disconnected. |
| Velocity Precision | 0.1m/s |
| Max Height | 50000 meters |
| Max Speed | 515m/s |
| Max Acceleration | 4G |
| Max Update Rate | 10Hz (TS100), 20Hz (TS100 V2.0/SE100) |
| Sensitivity (Tracking & Nav.) | -167dBm |
| Sensitivity (Acquisition) | -163dBm |
| Sensitivity (Cold start) | -151dBm |
| Sensitivity (Hot start) | -159dBm |
| Activation Period (Cold start) | 26s |
| Activation Period (Hot start) | 1s |
6.4 GPS Module Comparison

6.5 Flight Controller Comparison (Crossflight vs. Others)

6.6 Dimensions


7. User Tips
- Enhanced Stability: The Crossflight's software-based vibration damping ensures highly accurate sensor data, leading to a better Altitude Hold effect and overall more stable flight.
- Quality Assurance: Benefit from the same rigorous automated software testing system used for PIXHAWK and Mini Pix, ensuring the reliability of every function and connection.
- Space and Weight Saving: With its mini size (39.7*39.7*13mm) and light weight (16.5g), the Crossflight helps save valuable space and reduces the total weight of your model, potentially extending flight times.
- Versatile Compatibility: The flight controller's broad adaptability to various models (multirotor, airplane, helicopter, car, boat, submarine, radartracker) makes it a cost-effective solution for diverse applications.
8. Warranty and Support
For warranty information, technical support, or service inquiries, please contact the Radiolink Official Store or visit their official website. Keep your purchase receipt as proof of purchase.
9. Safety 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.
Always operate your RC model responsibly and in accordance with local laws and regulations. Ensure you understand and follow all safety guidelines for operating drones and other remote-controlled vehicles.





