How to Use SPEEDYBEE F405 WING FC Board Back: Examples, Pinouts, and Specs

The SPEEDYBEE F405 WING FC Board Back is a high-performance flight controller designed specifically for drones. It features the powerful STM32F405 processor, enabling precise and efficient flight control. This flight controller is optimized for fixed-wing and VTOL (Vertical Take-Off and Landing) drones, offering advanced features such as multiple UART ports, telemetry support, and easy configuration via the SpeedyBee app.

• Fixed-wing drones for recreational or professional use
• VTOL drones for industrial or research applications
• FPV (First-Person View) drones for racing or aerial photography
• Autonomous drone systems requiring advanced flight control and telemetry

The SPEEDYBEE F405 WING FC Board Back is packed with features to support a wide range of drone applications. Below are the key technical specifications:

• Processor: STM32F405 (168 MHz, ARM Cortex-M4)
• IMU (Inertial Measurement Unit): MPU6000 (6-axis gyro and accelerometer)
• Input Voltage: 7V–36V (2S–8S LiPo battery)
• BEC Output: 5V/2A and 9V/2A
• UART Ports: 6 UARTs for peripherals (e.g., GPS, telemetry, receivers)
• Flash Memory: 16MB for Blackbox logging
• OSD: Integrated Betaflight OSD (On-Screen Display)
• Connectivity: Bluetooth for SpeedyBee app configuration
• Dimensions: 50mm x 50mm
• Mounting Holes: 30.5mm x 30.5mm (M3 screws)

The SPEEDYBEE F405 WING FC Board Back features a well-labeled pinout for easy connection of peripherals. Below is the pin configuration:

1. Powering the Board: Connect a 2S–8S LiPo battery to the VBAT pin. Ensure the voltage is within the 7V–36V range.
2. Connecting Peripherals:
   • Use the UART ports to connect devices such as GPS modules, telemetry radios, or receivers.
   • Connect ESCs to the motor output pins (M1–M8) for motor control.
   • Use the 5V or 9V BEC outputs to power FPV cameras or other peripherals.
3. Configuration:
   • Download the SpeedyBee app on your smartphone.
   • Use the built-in Bluetooth module to connect the flight controller to the app.
   • Configure flight parameters, calibrate sensors, and set up the OSD using the app or Betaflight Configurator on a PC.
4. Mounting: Secure the flight controller to your drone frame using M3 screws and vibration-dampening mounts.

• Sensor Calibration: Always calibrate the accelerometer and compass before the first flight.
• Firmware Updates: Ensure the flight controller is running the latest firmware version for optimal performance.
• Power Distribution: Avoid overloading the 5V and 9V BEC outputs. Check the current requirements of connected peripherals.
• Wiring: Double-check all connections to prevent short circuits or reversed polarity.
• Blackbox Logging: Use the 16MB flash memory to log flight data for analysis and troubleshooting.

While the SPEEDYBEE F405 WING FC Board Back is not typically used with an Arduino UNO, you can use an Arduino to send telemetry data to the flight controller. Below is an example of how to send data via UART:

// Example: Sending telemetry data to the SPEEDYBEE F405 WING FC via UART
#include <SoftwareSerial.h>

// Define RX and TX pins for SoftwareSerial
SoftwareSerial telemetrySerial(10, 11); // RX = pin 10, TX = pin 11

void setup() {
  // Initialize the serial communication
  telemetrySerial.begin(9600); // Set baud rate to match the flight controller
  Serial.begin(9600); // For debugging on the Serial Monitor

  Serial.println("Telemetry communication initialized.");
}

void loop() {
  // Example telemetry data (replace with actual data as needed)
  String telemetryData = "Altitude: 120m, Speed: 15m/s";

  // Send telemetry data to the flight controller
  telemetrySerial.println(telemetryData);

  // Debug output
  Serial.println("Sent: " + telemetryData);

  delay(1000); // Send data every second
}

1. Issue: The flight controller does not power on.

   • Solution: Check the battery voltage and ensure it is within the 7V–36V range. Verify the VBAT connection.

2. Issue: Bluetooth connection to the SpeedyBee app fails.

   • Solution: Ensure the flight controller is powered on and within range. Restart the app and reattempt pairing.

3. Issue: Motors do not spin after arming.

   • Solution: Verify motor connections to the M1–M8 pins. Check the ESC calibration and motor configuration in Betaflight.

4. Issue: No telemetry data is received.

   • Solution: Confirm the UART port and baud rate settings match between the flight controller and the telemetry device.

• Q: Can I use this flight controller with a quadcopter?

  • A: Yes, the SPEEDYBEE F405 WING FC Board Back supports quadcopters, but it is optimized for fixed-wing and VTOL drones.

• Q: How do I update the firmware?

  • A: Use the Betaflight Configurator on a PC. Connect the flight controller via USB, select the correct firmware, and flash it.

• Q: What is the maximum number of motors supported?

  • A: The flight controller supports up to 8 motors, making it suitable for octocopters.

• Q: Can I use this flight controller without the SpeedyBee app?

  • A: Yes, you can configure the flight controller using Betaflight Configurator on a PC.

This documentation provides a comprehensive guide to using the SPEEDYBEE F405 WING FC Board Back effectively. For further assistance, refer to the official product manual or community forums.