Refined title: MATEK F405-WMN Flight Controller with OSD and Blackbox

The Matek F405-WMN Flight Controller is a powerful and versatile unit designed for use in a variety of applications. Featuring a STM32F405RGT6 microcontroller running at 168MHz with 1MB of flash memory, the F405-WMN packs a punch in a compact form factor.

At the heart of the controller is an IMU (Inertial Measurement Unit) comprising the ICM42688-P, a high-performance 6-axis sensor, and the SPL06-001 barometric pressure sensor. This combination provides precise motion and altitude data, essential for stable and accurate flight performance.

The F405-WMN boasts an impressive array of connectivity options, including 5 UART ports, 1 Softserial_Tx option (for use with INAV), 12 PWM outputs, and a single I2C port. Additionally, it features 3 ADC channels for monitoring battery voltage, current, and RSSI (Received Signal Strength Indicator). A spare PINIO (Programmable Input/Output) pin provides additional flexibility for custom applications.

Easily accessible via a USB Type-C port, the F405-WMN includes a built-in inverter on the UART2-RX line for SBUS input, allowing for seamless integration with a wide range of radio control systems. The controller also supports switchable dual camera inputs, making it an ideal choice for aerial photography and videography applications.

Measuring just 31 x 26 x 16.5mm and weighing only 10g, the Matek F405-WMN is designed for easy installation and integration into a variety of platforms. Its compact size and 22 x 22mm mounting pattern with 2mm holes make it a great fit for a wide range of drones and other unmanned vehicles.

The F405-WMN comes pre-loaded with the INAV firmware, version 5.0 or newer, providing a feature-rich and user-friendly flight control solution. For users of the ArduPilot ecosystem, the board is also compatible and can be flashed with the appropriate firmware.

Several important tips are provided to ensure a smooth setup and integration process. For example, when connecting a single GPS to the UART4 (TX4/RX4) port, it is recommended to set the UART5 SERIAL3_PROTOCOL to -1 or a non-"5" value to prevent issues during bootup. Additionally, for high-speed serial data transmission (e.g., 921600 baud), it is advised to use the USART1 (Serial1) or USART2 (Serial6) ports.

The F405-WMN also supports Frsky Smartport Telemetry using a non-inverted (hacked) S.Port signal on any spare UART_TX, with the SERIALX_BAUD set to 57, SERIALX_OPTIONS to 7, and SERIALX_PROTOCOL to 4 or 10 (for Yaapu). For DJI FPV OSD integration with ArduPilot 4.1, the OSD_TYPE should be set to 3, and the SERIALX_PROTOCOL to 33, with MSP_OPTIONS set to 0 for polling mode.

The Matek F405-WMN's versatility extends to its GPIO (General Purpose Input/Output) capabilities, with the PINIO1 and PINIO2 pins providing control over a relay and camera switch, respectively. These features can be configured using the appropriate RC input options and GPIO settings.

In summary, the Matek F405-WMN Flight Controller is a powerful and feature-rich unit that delivers impressive performance in a compact and lightweight package. Its extensive connectivity options, sophisticated sensor suite, and compatibility with popular flight control firmware make it an excellent choice for a wide range of aerial and robotics applications.

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