3 This board use the STM32F411CEU6 microcontroller and have the following features:
5 * The 16M byte SPI flash for data logging
6 * USB VCP and boot select button on board(for DFU)
7 * Stable voltage regulation,9V/1.5A DCDC BEC for VTX/camera etc.And could select 5v/9v with pad
8 * Serial LED interface(LED_STRIP)
9 * VBAT/CURR/RSSI sensors input
10 * Suppose IRC Tramp/smart audio/FPV Camera Control/FPORT/telemetry
11 * Supports SBus, Spektrum1024/2048, PPM. No external inverters required (built-in).
12 * Supports I2C device extend(baro/compass/OLED etc)
15 ### All uarts have pad on board
16 | Value | Identifier | RX | TX | Notes |
17 | ----- | ------------ | -----| -----| ------------------------------------------------------------------------------------------- |
18 | 1 | USART1 | PB7 | PB6 | FOR SBUS IN(inverter build in) |
19 | 2 | USART2 | PA3 | PA2| FOR VTX SM/IRC ETC |
22 ### I2C with GPS port together.Use for BARO or compass etc
23 | Value | Identifier | function | pin | Notes |
24 | ----- | ------------ | ---------| -------| ------------------------------------------------------------------------------------- |
25 | 1 | I2C1 | SDA | PB9 | with GPS outlet
26 | 2 | I2C1 | SCL | PB8 | with GPS outlet
30 | Value | Identifier | function | pin | Notes |
31 | ----- | ------------ | ---------| -------| ------------------------------------------------------------------------------------- |
32 | 1 | LED0 | LED | PC13 |
33 | 2 | BEEPER | BEE | PC14 |
36 ### VBAT input with 1/10 divider ratio,Current signal input,Analog/digit RSSI input
37 | Value | Identifier | function | pin | Notes |
38 | ----- | ------------ | ----------| ------| ------------------------------------------------------------------------------------- |
39 | 1 | ADC1 | VBAT | PA0 | DMA2_Stream0
40 | 2 | ADC1 | CURR | PA1 | DMA2_Stream0
41 | 3 | ADC1 | RSSI | PB1 | DMA2_Stream0
44 ### 8 Outputs, 1 PPM input
45 | Value | Identifier | function | pin | Notes |
46 | ----- | ------------ | ----------| ------| ------------------------------------------------------------------------------------- |
47 | 1 | TIM9_CH1 | PPM | PA2 | PPM
48 | 2 | TIM1_CH1 | OUPUT1 | PA8 | DMA2_Stream1
49 | 3 | TIM1_CH2 | OUPUT2 | PA9 | DMA2_Stream2
50 | 4 | TIM1_CH3 | OUPUT3 | PA10 | DMA2_Stream6
51 | 5 | TIM3_CH3 | OUPUT4 | PB0 | DMA1_Stream7
52 | 6 | TIM3_CH1 | OUPUT5 | PB4 | DMA1_Stream4
53 | 7 | TIM3_CH4 | ANY | PB1 | DMA1_Stream2
54 | 8 | TIM5_CH4 | ANY | PA3 | DMA1_Stream3
55 | 9 | TIM2_CH3 | CAM_C | PB10 | DMA1_Stream1
56 | 10 | TIM2_CH4 | LED | PB11 | DMA1_Stream6
59 ### Gyro & ACC ICM20689
60 | Value | Identifier | function | pin | Notes |
61 | ----- | ------------ | ---------| -------| ------------------------------------------------------------------------------------- |
62 | 1 | SPI1 | SCK | PA5 |
63 | 2 | SPI1 | MISO | PA6 |
64 | 3 | SPI1 | MOSI | PA7 |
65 | 4 | SPI1 | CS | PA4 |
68 | Value | Identifier | function | pin | Notes |
69 | ----- | ------------ | ---------| -------| ------------------------------------------------------------------------------------- |
70 | 1 | SPI3 | SCK | PB13 |
71 | 2 | SPI3 | MISO | PB14 |
72 | 3 | SPI3 | MOSI | PB15 |
73 | 4 | SPI3 | CS | PB12 |
76 | Value | Identifier | function | pin | Notes |
77 | ----- | ------------ | ---------| -------| ------------------------------------------------------------------------------------- |
78 | 1 | SPI3 | SCK | PB13 |
79 | 2 | SPI3 | MISO | PB14 |
80 | 3 | SPI3 | MOSI | PB15 |
81 | 4 | SPI3 | CS | PB2 |
84 | Pin | Function | Notes |
85 | --- | -------------- | -------------------------------------------- |