1 # Board - IFlightF4_TWIN_G
3 > **IFlightF4_TWIN_G : Real Twin Gyroscopes.**
5 > **This Flight Controller can operate simultaneously with real dual gyroscopes to provide better flight performance for FPV player.**
11 * Processors and Sensors
12 * *MCU:* STM32F405RGT6
13 * IMU_1: ICM20689(0 deg)
14 * IMU_2: ICM20689(90 deg)
15 * *OSD:* BetaFlight OSD (AT7456E connected via SPI2)
16 * Blackbox: FLASH M25Q256 (connected via SPI3)
20 * USB VCP and boot select button on board (for DFU)
22 * Serial LED interface(LED_STRIP)
24 * VBAT / CURR sensors input
26 * Suppose IRC Tramp / Smart audio / FPV Camera Control / FPORT/telemetry
28 * Supports SBus, Spektrum1024/2048, PPM. No external inverters required (built-in).
33 ![IFlightF4_TWIN_G](images/IFlightF4_TWIN_G.png)
35 ![IFlightF4_TWIN_G-Botton](images/IFlightF4_TWIN_G-Botton.png)
37 ![IFlightF4_TWIN_G-Top](images/IFlightF4_TWIN_G-Top.png)
41 ### All uarts have pad on board
43 | Value | Identifier | RX | TX | Notes |
44 | :---: | :--------: | :--: | :--: | :------: |
45 | 1 | USART1 | PA10 | PA9 | |
46 | 2 | USART2 | PA3 | PA2 | Rx input |
47 | 3 | USART3 | PB11 | PB10 | |
48 | 6 | USART6 | PC7 | PC6 | |
52 | Value | Identifier | function | pin | Notes |
53 | :---: | :--------: | :------: | :--: | :---: |
54 | 1 | LED0 | LED | PB5 | |
55 | 2 | BEEPER | BEEP | PB4 | |
57 ### VBAT input, Current input, Analog RSSI input
59 | Value | Identifier | function | pin | Notes |
60 | :---: | :--------: | :------: | :--: | :---: |
61 | 1 | ADC1 | VBAT | PC2 | |
62 | 2 | ADC1 | CURRENT | PC1 | |
64 ### PWM Input & PWM Output
66 | Value | Identifier | function | pin | Notes |
67 | :---: | :--------: | :---------: | :--: | :---: |
68 | 1 | TIM9_CH2 | PPM | PA3 | |
69 | 2 | TIM3_CH3 | Motor1 | PB0 | |
70 | 3 | TIM3_CH4 | Motor2 | PB1 | |
71 | 4 | TIM8_CH4 | Motor5 | PC9 | |
72 | 5 | TIM8_CH3 | Motor6 | PC8 | |
73 | 6 | TIM4_CH1 | LED STRIP | PB6 | |
74 | 7 | TIM5_CH1 | CAM Control | PA0 | |
76 ### Gyro & ACC ICM20689
78 | Value | Identifier | function | pin | Notes |
79 | :---: | :--------: | :------: | :--: | :------------: |
80 | 1 | SPI1 | SCK | PA5 | ICM20689 |
81 | 2 | SPI1 | MISO | PA6 | ICM20689 |
82 | 3 | SPI1 | MOSI | PA7 | ICM20689 |
83 | 4 | IO | CS1 | PA4 | ICM20689_A_CS |
84 | 5 | IO | CS2 | PC3 | ICM20689_B_CS |
85 | 6 | IO | INT1 | PC4 | ICM20689_A_INT |
86 | 7 | IO | INT2 | PA8 | ICM20689_B_INT |
90 | Value | Identifier | function | pin | Notes |
91 | :---: | :--------: | :------: | :--: | :---: |
92 | 1 | SPI2 | SCK | PB13 | |
93 | 2 | SPI2 | MISO | PB14 | |
94 | 3 | SPI2 | MOSI | PB15 | |
95 | 4 | SPI2 | CS | PB12 | |
99 | Value | Identifier | function | pin | Notes |
100 | :---: | :--------: | :------: | :--: | :---: |
101 | 1 | SPI3 | SCK | PC10 | |
102 | 2 | SPI3 | MISO | PC11 | |
103 | 3 | SPI3 | MOSI | PC12 | |
104 | 4 | SPI3 | CS | PA15 | |
108 | Pin | Function | Notes |
109 | :--: | :------: | :---: |