FOXEER F722 V4 Flight Controller User Manual

1. Introduction

The FOXEER F722 V4 Flight Controller is an advanced component designed for drone applications, providing precise control and stability. It integrates a powerful STM32F722RET6 CPU, an MPU6000 gyroscope, and a DPS310 barometer to ensure optimal flight performance.

This flight controller supports a wide range of power inputs and offers multiple output options for peripheral devices. It is equipped with features for real-time monitoring, data logging, and extensive connectivity, making it suitable for various drone setups.

Figure 1: Overview of the FOXEER F722 V4 Flight Controller.

2. Key Features

• High-Performance CPU: Equipped with STM32F722RET6 for fast processing.
• Precise Sensors: Features MPU6000 gyroscope and DPS310 barometer for accurate flight data.
• Wide Power Input: Supports 4S to 8S LiPo battery input.
• Dual BEC Output: Provides stable DC5V/2A and DC10V/2A power for peripherals.
• Integrated OSD: BetaFlight OSD for on-screen display and configuration.
• Black Box Functionality: 16M Flash Memory for comprehensive flight data logging.
• Extensive Connectivity: Five UART sets plus Rx4 for various accessories and ESC telemetry.
• Audio and Visual Feedback: Includes buzzer and 2812 LED set.
• Compact Design: Measures 37x37mm with 30.5x30.5mm mounting holes, weighing 7.7g.
• USB Type-C: Modern and convenient USB interface.
• DJI/HDzero Connector: Dedicated connector for digital FPV systems.

3. Setup and Wiring

Proper wiring is crucial for the safe and correct operation of the flight controller. Refer to the pinout diagram below for connection details.

Figure 2: FOXEER F722 V4 Pinout Diagram (Top View).

3.1. Mounting

The flight controller has a size of 37x37mm with 30.5x30.5mm mounting holes (Φ4mm). Use the provided rubber columns to securely mount the FC to your drone frame, ensuring vibration isolation.

3.2. Power Connection

Connect your LiPo battery (4S to 8S) to the designated power pads. Ensure correct polarity. The FC provides regulated 5V and 10V outputs for your FPV camera, VTX, and receiver.

3.3. Peripheral Connections

• ESCs: Connect ESC signal wires to the appropriate motor outputs (M1-M4/M8).
• Receiver: Connect your receiver to one of the UARTs (e.g., RX4 for SBUS/CRSF).
• FPV Camera: Connect to the CAM input and 5V/10V output.
• Video Transmitter (VTX): Connect to the VTX output and 5V/10V output. Smart Audio is supported for VTX control.
• GPS/Compass: Connect to an available UART (e.g., TX/RX pads).
• Buzzer: Connect to the dedicated buzzer pads.
• LEDs: Connect 2812 LEDs to the LED pad.
• DJI/HDzero: Use the dedicated connector for digital FPV systems.

Figure 3: Angled view of the FOXEER F722 V4, highlighting the USB Type-C port.

4. Operating Instructions

4.1. Firmware Flashing

The FOXEER F722 V4 uses BetaFlight firmware. To flash or update the firmware:

1. Download the latest BetaFlight Configurator from the official BetaFlight website.
2. Connect the flight controller to your computer using a USB Type-C cable.
3. Enter DFU mode by holding the BOOT button while plugging in the USB cable, or by using the DFU option in BetaFlight Configurator.
4. Select the target firmware "FOXEERF722V4" in the BetaFlight Configurator and flash the firmware.

4.2. BetaFlight Configuration

After flashing, connect to the BetaFlight Configurator to set up your flight controller:

• Ports Tab: Configure UARTs for your receiver, VTX (Smart Audio), GPS, and ESC telemetry.
• Configuration Tab: Set up ESC protocol (e.g., DShot), accelerometer calibration, and other basic settings.
• Motors Tab: Test motor direction and order.
• OSD Tab: Customize the on-screen display elements for your FPV feed.
• Blackbox Tab: Configure black box logging rates and parameters.
• CLI Tab: For advanced configurations or specific settings not available in the GUI. X8 support requires CLI commands.

5. Maintenance

Regular maintenance helps ensure the longevity and reliable performance of your flight controller.

• Visual Inspection: Periodically inspect the board for any signs of damage, loose connections, or corrosion.
• Cleaning: Gently clean the board with isopropyl alcohol and a soft brush if dust or debris accumulates. Ensure the board is powered off and disconnected before cleaning.
• Firmware Updates: Keep the firmware updated to benefit from performance improvements and bug fixes.
• Storage: When not in use, store the flight controller in a dry, anti-static environment, away from extreme temperatures.

6. Troubleshooting

If you encounter issues with your FOXEER F722 V4 Flight Controller, consider the following troubleshooting steps:

• No Power/LEDs Off:
  • Check battery connection and polarity.
  • Verify power supply voltage is within the 4S-8S LiPo range.
  • Inspect for short circuits on the board or connected peripherals.
• Cannot Connect to BetaFlight Configurator:
  • Ensure correct USB Type-C cable is used (data capable, not just charging).
  • Install necessary VCP (Virtual COM Port) drivers.
  • Try a different USB port or computer.
  • Attempt to connect in DFU mode for firmware re-flash.
• Gyro/Accelerometer Issues:
  • Perform accelerometer calibration in BetaFlight Configurator on a level surface.
  • Check for excessive vibrations on the drone frame; ensure FC is soft-mounted.
• Peripheral Not Working (e.g., Receiver, VTX):
  • Verify wiring connections to the correct UARTs and power outputs.
  • Check UART configuration in BetaFlight Configurator (e.g., Serial RX for receiver, Peripherals for Smart Audio).
  • Ensure peripherals are powered correctly by the FC's BEC outputs.

7. Specifications

8. Warranty and Support

8.1. Warranty Information

This product is typically covered by a return policy allowing for refund or replacement within 30 days of purchase. Please refer to your retailer's specific return and warranty policies for detailed terms and conditions.

8.2. Technical Support

For technical assistance, firmware updates, or further inquiries, please visit the official FOXEER website or contact their customer support channels. Ensure you have your product model (F722 V4) and any relevant purchase information ready when seeking support.

Manufacturer: Foxeer