GEPRC SPAN F722-BT-HD V2 Stack Instruction Manual

1. Introduction

The GEPRC SPAN F722-BT-HD V2 Stack is a high-performance flight tower system specifically designed for FPV freestyle drones. This integrated system combines an F722 chip flight controller with a BLheli_32 50A 96K 4-in-1 32-bit Electronic Speed Controller (ESC). It is equipped with a 42688-P gyroscope, features an integrated 512MB onboard SD card for BlackBox flight data recording, and supports on-board Bluetooth parameter tuning for convenient adjustments.

This stack is engineered for a delicate and smooth flying experience, offering direct plug-in compatibility with the DJI Air Unit, simplifying installation by eliminating the need for soldering. The flight controller also features an upgraded Type-C USB connector, enhancing durability and connection reliability. It supports various receiver protocols including Sbus, PPM, CRSF, DSMX, and iBus, ensuring broad compatibility with different remote control systems.

Key Features:

• Utilizes the mainstream STM32F722RET6 main control unit.
• Equipped with the latest 42688-P gyroscope for precise flight control.
• Supports Bluetooth parameter tuning for easy adjustments via mobile devices.
• Includes a 512MB on-board SD card for BlackBox flight data logging.
• Integrated LC filtering for clean power delivery.
• Features an upgraded Type-C USB connector for improved durability and connectivity.
• Direct plug-in support for DJI Air Unit, simplifying wiring.
• Combined with BLHeli_32 50A 96K 4IN1 ESC for a smooth flight experience.
• Simple and effective shock absorption mechanism to stabilize the gyroscope.
• Compatible with major receivers: Sbus, PPM, CRSF, DSMX, iBus.

2. Specifications

2.1. SPAN F722-BT-HD V2 Flight Controller

Figure 2.1: Flight Controller Dimensions

2.2. BL32 50A 96K 4IN1 ESC

Figure 2.2: ESC Dimensions

3. Package Contents (Stack Version)

• 1 x Flight Controller
• 1 x ESC
• 1 x Capacitor
• 1 x DJI Air Unit Adapter Cable
• 1 x Flight Controller Adapter Cable
• 1 x XT60 Power cable
• 4 x M3*30 Screws
• 4 x M3*24 Screws
• 8 x Nylon nuts
• 4 x Silicone grommets

Figure 3.1: Included Accessories

4. Setup and Installation

4.1. Mounting the Stack

The SPAN F722-BT-HD V2 Stack features a unique shock absorption structure designed to reduce the impact of external vibrations on the flight controller's gyroscope, ensuring stable flight performance. Use the provided silicone grommets with the M3 screws for optimal vibration isolation.

Figure 4.1: Shock Absorption Structure and Dimensions

The stack has a total height of approximately 19.5mm, with a 7.5mm gap between the flight controller and the ESC board.

4.2. Wiring Diagrams

Carefully follow the wiring diagrams below for connecting your flight controller and ESC to other components of your FPV drone. Ensure all connections are secure and correctly oriented before powering on the system.

Flight Controller Wiring:

Figure 4.2: Flight Controller Wiring Diagram

ESC Wiring:

Figure 4.3: ESC Wiring Diagram

4.3. DJI Air Unit Connection

The SPAN F722-BT-HD V2 Flight Controller supports direct plug-in for the DJI Air Unit. Use the provided DJI Air Unit Adapter Cable to connect without the need for additional soldering. This feature simplifies the build process and reduces potential points of failure.

Figure 4.4: DJI Air Unit Direct Connection

5. Operating Instructions

5.1. Firmware and Configuration

The flight controller comes pre-flashed with GEPRCF722-BT-HD firmware. For initial setup and advanced configuration, connect the flight controller to your computer via the Type-C USB port and use the BetaFlight Configurator software. Ensure you have the latest version of BetaFlight Configurator installed.

5.2. Bluetooth Parameter Tuning

The SPAN F722-BT-HD V2 supports on-board Bluetooth for wireless parameter tuning. This allows for convenient adjustments to your drone's settings using a compatible mobile application (e.g., SpeedyBee App) on Android or iOS devices. Refer to the specific app's instructions for connecting and modifying parameters via Bluetooth.

Figure 5.1: Bluetooth Tuning Feature

5.3. BlackBox Flight Data Recording

The integrated 512MB SD card allows for BlackBox flight data recording. This feature is invaluable for analyzing flight performance, tuning, and troubleshooting. Configure BlackBox logging settings within BetaFlight Configurator to capture desired flight parameters.

Figure 5.2: On-board SD Card for BlackBox

6. Maintenance

• Regular Inspection: Periodically check all solder joints and connections for any signs of wear, corrosion, or damage.
• Cleaning: Keep the flight controller and ESC free from dust, dirt, and moisture. Use a soft brush or compressed air for cleaning. Avoid using liquids directly on the electronics.
• Firmware Updates: Regularly check for new firmware releases for both the flight controller (BetaFlight) and ESC (BLHeli_32) to ensure optimal performance and access to new features.
• Storage: When not in use, store the stack in a dry, cool environment, away from direct sunlight and extreme temperatures.

7. Troubleshooting

• No Power: Check battery connection, XT60 power cable, and ensure the battery is charged. Inspect for any short circuits.
• No USB Connection: Ensure the Type-C USB cable is fully inserted and functional. Try a different USB port or cable. Verify that necessary drivers are installed on your computer.
• Motors Not Spinning: Check ESC connections to motors and flight controller. Verify ESC calibration and motor direction in BetaFlight. Ensure arming conditions are met.
• Unstable Flight: Recheck mounting for proper shock absorption. Verify gyroscope calibration in BetaFlight. Review BlackBox logs for insights into vibrations or control issues.
• Receiver Not Responding: Confirm receiver is correctly wired to the flight controller. Check receiver protocol settings in BetaFlight (Sbus, PPM, CRSF, etc.). Ensure receiver is bound to your remote controller.

8. User Tips

• Optimal Gyroscope Performance: The unique shock absorption structure is crucial for the 42688-P gyroscope's stability. Ensure the silicone grommets are correctly installed and not overtightened to maximize vibration dampening and achieve a 'silky smooth flight experience'.
• Leverage Bluetooth Tuning: Utilize the on-board Bluetooth feature for quick field adjustments to PID settings or other parameters without needing a laptop. This can significantly speed up tuning sessions.
• BlackBox for Diagnostics: Make full use of the 512MB BlackBox logging. It's an invaluable tool for diagnosing flight issues, identifying oscillations, and fine-tuning your drone's performance.

9. Compliance and Safety

9.1. Disclaimer

⚠️ For recreation use only. Illegal modification of drones/planes is prohibited. Please also pay attention to the relevant laws and regulations on the use of drones/planes in your country/area to ensure legal use.

10. Warranty and Support

For technical support, warranty claims, or further assistance, please contact the seller or manufacturer directly. Keep your proof of purchase for any warranty-related inquiries.