Board - Seriously Pro SP Racing F3 EVO

The Seriously Pro Racing F3 Evo board (SPRacingF3EVO) is the evolution of the first board designed specifically for Cleanflight.

Purchasing boards directly from SeriouslyPro / SP Racing and official retailers helps fund Cleanflight development, it's the reason the Seriously Pro boards exist! Official retailers are always listed on the SeriouslyPro.com website.

Full details available on the website, here:

http://seriouslypro.com/spracingf3evo

Hardware Features

• Next-generation STM32 F3 processor with hardware floating point unit for efficient flight calculations and faster ARM-Cortex M4 core.
• MicroSD-Card socket for black box flight log recorder - optimize your tuning and see the results of your setup without guesswork.
• Race transponder built in - just turn up at a race and have your lap times recorded.
• Features the latest Accelerometer, Gyro and Mag/Compass and Baro/Altitude sensor technology.
• Wire up using using pin headers for all major connections for excellent crash-durability. Use either right-angled or straight pin-headers.
• No compromise I/O. Use all the features all the time; e.g. Connect your USB + OSD + SmartPort + SBus + GPS + LED Strip + Battery Monitoring + 8 motors - all at the same time!
• 8 PWM output lines for ESCs and Servos. Arranged for easy wiring on standard pin headers.
• Supports direct connection of SBus, SumH, SumD, Spektrum1024/2048, XBus receivers. No external inverters required (built-in).
• Supports direct connection of 3.3v Spektrum Satellite receivers via 3 pin through-hole JST-ZH connector.
• Dedicated PPM receiver input.
• 3 Serial Ports - NOT shared with the USB socket.
• Telemetry port
• Micro USB socket.
• Dedicated output for programmable LEDs - great for orientation, racing and night flying. (Currently mutually exclusive with the Transponder).
• Dedicated I2C port for connection of OLED display without needing flight battery.
• Battery monitoring for voltage and current.
• RSSI monitoring (analogue or PWM).
• Buzzer port for audible warnings and notifications.
• Developer friendly debugging port (SWD) and boot mode selection, unbrickable bootloader.
• Symmetrical design for a super tidy wiring.
• JST-SH sockets only for I2C, UART2 and SWD. UART2 also on through-hole pins.
• Flashing via USB or serial port.
• Stackable design - perfect for integrating with OSDs and power distribution boards.
• Standard mounting - 36x36mm with standard 30.5mm mounting holes.
• LEDs for 3v, 5v and Status for easy diagnostics.
• Copper-etched Cleanflight logo.

Serial Ports

Value	Identifier	RX	TX	5v Tolerant	Notes
1	USART1	PA10	PA9	YES	2 through-hole pins. Use for connecting to OSD/GPS/BlueTooth.
2	USART2	PA15	PA14 / SWCLK	YES	JST socket and PPM header. Use to connect to RX.
3	USART3	PB11 / AF7	PB10 / AF7	NO	Available on 4 through-hole pins. 3.3V signals only ! Use for GPS, Spektrum Satellite RX, SmartPort Telemetry, HoTT telemetry, etc.

• You cannot use SWD and USART2 at the same time.
• When using a Serial RX receiver the TXD (T2) pin cannot be used for telemetry. Use UART3 TXD instead.
• Two SoftSerial is supported. Enabling SoftSerial disables Servo output 3,4,5,6
• Windows DFU Flashing requires Zadig (see configurator)

SoftSerial

Pin	Function	Notes
5	SOFTSERIAL1 RX	SoftSerial replaces Servo 3,4,5,6
6	SOFTSERIAL1 TX
7	SOFTSERIAL2 RX
8	SOFTSERIAL2 TX

Pinouts

Full pinout details are available in the manual, here:

http://seriouslypro.com/files/SPRacingF3EVO-Manual-latest.pdf

IO_1

The 6 pin IO_1 connector has the following pinouts when used in RX_SERIAL mode.

Pin	Function	Notes
1	Ground
2	VCC_IN	Voltage as-supplied by BEC.
3	RX_SERIAL	Enable feature RX_SERIAL
4
5	+V BATTERY	Voltage as-supplied by Battery.
6	-V BATTERY	Voltage as-supplied by Battery.

When RX_PPM is used the IO_1 pinout is as follows.

Pin	Function	Notes
1	Ground
2	VCC_IN	Voltage as-supplied by BEC.
3	RX_PPM	Enable feature RX_PPM
4	TELEMETRY	Enable feature TELEMETRY
5	+V BATTERY	Voltage as-supplied by Battery.
6	-V BATTERY	Voltage as-supplied by Battery.

IO_2

When TRANSPONDER is used and the IR solder pads are shorted, the 6 pin IO_2 pinout is as follows.

Pin	Function	Notes
1	IR-	Short leg of the IR LED
2	IR+	Long leg of the IR LED
3	CURRENT	Current Sensor
4	RSSI	RSSI (PWM or Analog - select by solder pads)
5	BUZZER+	5V Source
6	BUZZER-	Buzzer signal

When LEDSTRIP is used and the LED solder pads are shorted, the 6 pin IO_2 pinout is as follows.

Pin	Function	Notes
1
2	LEDSTRIP	WS2812 Ledstrip data
3	CURRENT	Current Sensor
4	RSSI	RSSI (PWM or Analog - select by solder pads)
5	BUZZER+	5V Source
6	BUZZER-	Buzzer signal

UART1

Pin	Function	Notes
3	TXD
4	RXD

UART2/3

Pin	Function	Notes
1	Ground
2	VCC_IN	Voltage as-supplied by BEC.
3	TXD
4	RXD

Spektrum Satellite

Pin	Function	Notes
3	3.3V
2	Ground
1	RXD

I2C

Pin	Function	Notes
1	Ground
2	5.0v	Voltage as-supplied by BEC OR USB, always on
3	SCL	3.3V signals only
4	SDA	3.3V signals only

SWD

The port cannot be used at the same time as UART2.

Pin	Function	Notes
1	Ground
2	NRST
3	SWDIO
4	SWDCLK