Geprc F722-BT-HD V3 Flight Controller Instruction Manual

Introduction

The GEPRC GEP-F722-BT-HD V3 Flight Controller is a high-performance control unit designed for RC FPV fixed-wing drones and multirotors. Featuring a powerful STM32F722 chip, integrated OSD, Bluetooth connectivity, and direct compatibility with the DJI Air Unit, this flight controller provides robust and stable performance for advanced aerial applications. This manual provides essential information for the proper installation, operation, and maintenance of your flight controller.

Features

• Utilizes the mainstream STM32F722 chip for powerful processing.
• Equipped with the latest 42688-P gyroscope for precise flight control.
• Includes 512M black box storage for flight data logging.
• Supports Bluetooth parameter tuning for convenient adjustments.
• Integrated LC filter for clean power delivery to sensitive components.
• Features an upgraded Type-C USB interface for modern connectivity.
• Designed for direct plugging into the DJI Air Unit for seamless integration.
• Incorporates an integrated Barometer for altitude hold and stability.
• Provides 9V@2.5A + 5V@3A dual independent BEC for reliable power to peripherals.
• Simple and effective installation method with shock-absorbing mounts ensures stable gyroscope performance.

Specifications

Product Contents

The package for your GEPRC GEP-F722-BT-HD V3 Flight Controller includes the following items:

• 1 x Flight Controller (GEP-F722-BT-HD V3)
• 1 x DJI Air Unit Adapter Cable
• 1 x Flight Controller Adapter Cable
• 4 x Nylon nuts
• 4 x Silicone grommets
• 2 x sh1.0 4pin silicone cable
• 1 x Camera connection cable

Setup and Installation

Proper installation is crucial for the optimal performance of your flight controller. Please follow these guidelines:

1. **Mounting**: Secure the flight controller to your drone frame using the provided nylon nuts and silicone grommets. The silicone grommets are essential for shock absorption, which helps maintain gyroscope stability. The mounting holes are 30.5x30.5mm, and the φ4mm holes reduce to φ3mm when using the grommets.
2. **Power Connection**: Connect your 3-6S LiPo battery to the designated battery pads on the flight controller. Ensure correct polarity to prevent damage.
3. **ESC Connection**: Connect your Electronic Speed Controllers (ESCs) to the motor output pads (M1-M4) on the flight controller. Refer to your ESC and motor documentation for specific wiring.
4. **DJI Air Unit Connection**: Utilize the provided DJI Air Unit Adapter Cable to directly connect the flight controller to your DJI Air Unit. This simplifies wiring for digital FPV systems.
5. **Receiver Connection**: Connect your RC receiver to the appropriate UART port. Consult the BetaFlight documentation for specific pinouts and configuration.
6. **Camera and VTX Connection**: Use the camera connection cable to link your FPV camera to the flight controller. Connect your Video Transmitter (VTX) to the dedicated VTX pads.
7. **USB Connection**: Connect the flight controller to your computer using a Type-C USB cable. This is required for initial setup and configuration via BetaFlight Configurator.

Operating Instructions

Once installed, the GEPRC GEP-F722-BT-HD V3 Flight Controller operates primarily through the BetaFlight firmware. Here are the basic steps for operation:

1. **BetaFlight Configuration**:
   • Download and install the latest BetaFlight Configurator software on your computer.
   • Connect the flight controller via the Type-C USB port.
   • Flash the recommended firmware target: GEPRCF722_BT_HD_V3.
   • Configure your receiver, motors, ESCs, OSD, and other peripherals within the BetaFlight Configurator.
   • Perform sensor calibration (accelerometer, gyroscope, magnetometer if applicable).
2. **Bluetooth Parameter Tuning**: The flight controller supports Bluetooth for wireless parameter tuning. Use a compatible mobile application (e.g., SpeedyBee App) to connect to the flight controller via Bluetooth (UART4 is fixed for Bluetooth) and adjust settings without a physical USB connection.
3. **OSD (On-Screen Display)**: The integrated BetaFlight OSD with AT7456E chip allows you to display critical flight information (battery voltage, flight mode, RSSI, etc.) directly on your FPV video feed. Configure OSD elements in BetaFlight Configurator.
4. **Pre-Flight Checks**: Before each flight, ensure all connections are secure, battery is charged, and propellers are correctly installed. Verify flight modes and arming procedures.

Maintenance

To ensure the longevity and reliable performance of your flight controller, consider the following maintenance tips:

• **Regular Inspection**: Periodically check all solder joints and connectors for signs of wear, corrosion, or damage.
• **Cleanliness**: Keep the flight controller free from dust, dirt, and moisture. Use compressed air or a soft brush to gently clean the board. Avoid using liquids directly on the electronics.
• **Firmware Updates**: Regularly check for and install the latest BetaFlight firmware updates. These updates often include performance improvements, bug fixes, and new features. Always back up your configuration before updating.
• **Physical Protection**: Ensure the flight controller is adequately protected within your drone frame to prevent physical impact damage during crashes.
• **Cable Management**: Route all cables neatly and securely to prevent them from interfering with propellers or other moving parts, and to reduce strain on connectors.

Troubleshooting

If you encounter issues with your flight controller, consider these common troubleshooting steps:

• **No Power**:
  • Verify battery connection and voltage (3-6S LiPo).
  • Check for short circuits on the board or connected components.
  • Inspect power cables for damage.
• **No USB Connection**:
  • Ensure you are using a data-capable Type-C USB cable.
  • Try a different USB port on your computer.
  • Install necessary USB drivers (e.g., STM32 Virtual COM Port Driver, Zadig for DFU mode).
  • Try connecting in DFU mode (bootloader mode) by holding the BOOT button while plugging in USB.
• **Unstable Flight / Drifting**:
  • Recalibrate the accelerometer and gyroscope in BetaFlight.
  • Ensure the flight controller is mounted securely and the silicone grommets are correctly installed for vibration dampening.
  • Check for loose propellers or damaged motors/ESCs.
  • Review PID tuning settings in BetaFlight.
• **OSD Not Displaying**:
  • Verify OSD settings in BetaFlight Configurator.
  • Check camera and VTX connections.
  • Ensure your FPV goggles/monitor support the video format (PAL/NTSC) configured in BetaFlight.
• **Bluetooth Connection Issues**:
  • Ensure Bluetooth is enabled on your mobile device.
  • Confirm UART4 is configured for Bluetooth in BetaFlight.
  • Check for interference from other wireless devices.

For more in-depth troubleshooting, refer to the official BetaFlight documentation and community forums.

User Tips

• **Backup Your Configuration**: Always save a full dump and diff of your BetaFlight configuration after successful setup. This will save significant time if you need to re-flash firmware or troubleshoot.
• **Start with Default PIDs**: When setting up a new drone, it's often best to start with the default BetaFlight PID settings for your frame size and then fine-tune them gradually.
• **Heat Shrink Protection**: Consider adding heat shrink tubing to exposed solder pads or connectors for extra protection against short circuits and environmental elements.
• **Test Bench First**: Before flying, always perform thorough bench testing of motor direction, receiver inputs, and flight modes to ensure everything functions as expected.

Warranty and Support

This GEPRC product is covered by the manufacturer's standard warranty against defects in materials and workmanship. Please retain your proof of purchase for warranty claims. For technical support, firmware updates, or further assistance, please visit the official GEPRC website or contact their customer service. Always refer to the latest documentation available from the manufacturer for the most up-to-date information.