# Board - MERAKRCF405 MERAKRCF405 flight control is carefully optimized layout, so that users can be more concise,convenient wiring,.For ensure a good flight experience ,we use of high-performance MPU6000 gyroscope. After a long flight verification test, the flight control ensures stable flight performance. For details of flight control, please visit MERAK RC website:(http://www.merakrc.com) ### Hardware * Processors and Sensors * *MCU: STM32F405RGT6 * IMU_1 MPU6000(0 deg) * *OSD:* BetaFlight OSD (AT7456E) * Blackbox: FLASH W25Q128 (16MB) * 6 Dshot outputs * 5 UARTs (UART5 support SerialRC) * Stable voltage regulation,9V/2A DCDC BEC for VTX/camera etc.5V/2A DCDC BEC for FC/WS2812 etc. * Independent camera control. ### Pinout ### All uarts have pad on board | Value | Identifier | RX | TX | Notes | | :---: | :--------: | :--: | :--: | :------: | | 1 | USART1 | PA10 | PA9 | | | 2 | USART2 | PA3 | PA2 | | | 3 | USART3 | PB11 | PB10 | | | 4 | USART4 | PC11 | PC10 | | | 5 | USART5 | PD2 | PC12 | Rx input | ### Buzzer/LED output | Value | Identifier | function | pin | Notes | | :---: | :--------: | :------: | :--: | :---: | | 1 | LED0 | LED | PC13 | | | 2 | BEEPER | BEEP | PC14 | | ### VBAT input, Current input, Analog RSSI input | Value | Identifier | function | pin | Notes | | :---: | :--------: | :------: | :--: | :---: | | 1 | ADC1 | VBAT | PC2 | | | 2 | ADC1 | CURRENT | PC1 | | | 3 | ADC1 | RSSI | PC3 | | ### PWM Input & PWM Output & LED strip & Camera control | Value | Identifier | function | pin | Notes | | :---: | :--------: | :---------: | :--: | :---: | | 1 | TIM8_CH3 | PPM | PC8 | | | 2 | TIM3_CH1 | Motor1 | PC6 | | | 3 | TIM3_CH2 | Motor2 | PC7 | | | 4 | TIM5_CH1 | Motor3 | PA0 | | | 5 | TIM5_CH2 | Motor4 | PA1 | | | 6 | TIM3_CH3 | Motor5 | PB0 | | | 7 | TIM1_CH3N | Motor6 | PB1 | | | 8 | TIM4_CH3 | LED strip | PB8 | | | 9 | TIM11_CH1 | CAM Control | PB9 | | ### Gyro & ACC MPU6000 | Value | Identifier | function | pin | Notes | | :---: | :--------: | :------: | :--: | :------------: | | 1 | SPI2 | SCK | PB13 | MPU6000 | | 2 | SPI2 | MISO | PB14 | MPU6000 | | 3 | SPI2 | MOSI | PB15 | MPU6000 | | 4 | SPI2 | CS1 | PB12 | MPU6000_CS | | 5 | IO | INT2 | PC4 | MPU6000_INT | ### OSD MAX7456 | Value | Identifier | function | pin | Notes | | :---: | :--------: | :------: | :--: | :---: | | 1 | SPI3 | SCK | PB3 | | | 2 | SPI3 | MISO | PB4 | | | 3 | SPI3 | MOSI | PB5 | | | 4 | SPI3 | CS | PA15 | | ### FLash Blackbox | Value | Identifier | function | pin | Notes | | :---: | :--------: | :------: | :--: | :---: | | 1 | SPI1 | SCK | PA5 | | | 2 | SPI1 | MISO | PA6 | | | 3 | SPI1 | MOSI | PA7 | | | 4 | SPI1 | CS | PA4 | |