FLYWOOF411

This board use the STM32F411CEU6 microcontroller and have the following features:

• The 16M byte SPI flash for data logging
• USB VCP and boot select button on board(for DFU)
• Stable voltage regulation,9V/1.5A DCDC BEC for VTX/camera etc.And could select 5v/9v with pad
• Serial LED interface(LED_STRIP)
• VBAT/CURR/RSSI sensors input
• Suppose IRC Tramp/SmartAudio/FPV Camera Control/FPORT/telemetry
• Supports SBus, Spektrum1024/2048, PPM. No external inverters required (built-in).
• Supports I2C device extend(baro/compass/OLED etc)
• Supports GPS

All uarts have pad on board

Value	Identifier	RX	TX	Notes
1	USART1	PB7	PB6	FOR SBUS IN(inverter build in)
2	USART2	PA3	PA2	FOR VTX SM/IRC ETC

I2C with GPS port together.Use for BARO or compass etc

Value	Identifier	function	pin	Notes
1	I2C1	SDA	PB9	with GPS outlet
2	I2C1	SCL	PB8	with GPS outlet

Buzzer/LED output

Value	Identifier	function	pin	Notes
1	LED0	LED	PC13
2	BEEPER	BEE	PC14

VBAT input with 1/10 divider ratio,Current signal input,Analog/digit RSSI input

Value	Identifier	function	pin	Notes
1	ADC1	VBAT	PA0	DMA2_Stream0
2	ADC1	CURR	PA1	DMA2_Stream0
3	ADC1	RSSI	PB1	DMA2_Stream0

8 Outputs, 1 PPM input

Value	Identifier	function	pin	Notes
1	TIM9_CH1	PPM	PA2	PPM
2	TIM1_CH1	OUPUT1	PA8	DMA2_Stream1
3	TIM1_CH2	OUPUT2	PA9	DMA2_Stream2
4	TIM1_CH3	OUPUT3	PA10	DMA2_Stream6
5	TIM3_CH3	OUPUT4	PB0	DMA1_Stream7
6	TIM3_CH1	OUPUT5	PB4	DMA1_Stream4
7	TIM3_CH4	ANY	PB1	DMA1_Stream2
8	TIM5_CH4	ANY	PA3	DMA1_Stream3
9	TIM2_CH3	CAM_C	PB10	DMA1_Stream1
10	TIM2_CH4	LED	PB11	DMA1_Stream6

Gyro & ACC ICM20689

Value	Identifier	function	pin	Notes
1	SPI1	SCK	PA5
2	SPI1	MISO	PA6
3	SPI1	MOSI	PA7
4	SPI1	CS	PA4

OSD MAX7456

Value	Identifier	function	pin	Notes
1	SPI3	SCK	PB13
2	SPI3	MISO	PB14
3	SPI3	MOSI	PB15
4	SPI3	CS	PB12

16Mbyte flash

Value	Identifier	function	pin	Notes
1	SPI3	SCK	PB13
2	SPI3	MISO	PB14
3	SPI3	MOSI	PB15
4	SPI3	CS	PB2

SWD

Pin	Function	Notes
1	SWCLK	PAD
2	Ground	PAD
3	SWDIO	PAD
4	3V3	PAD

• FLYWOO TECH