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1 # Board - Seriously Pro SP Racing F3
3 The Seriously Pro Racing F3 board (SPRacingF3) is the first board designed specifically for Cleanflight.
5 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.
7 Full details available on the website, here:
9 http://seriouslypro.com/spracingf3
11 ## Hardware Features
13 * No compromise I/O. Use all the features all the time; e.g. Connect your OSD + SmartPort + SBus + GPS + LED Strip + Battery Monitoring + Sonar + 8 motors - all at the same time!
14 * On-board high-capacity black box flight log recorder - optimize your tuning and see the results of your setup without guesswork. (Acro and Deluxe)
15 * Next-generation STM32 F3 processor with hardware floating point unit for efficient flight calculations and faster ARM-Cortex M4 core.
16 * Stackable design - perfect for integrating with OSDs and power distribution boards.
17 * 16 PWM I/O lines for ESCs, Servos and legacy receivers. 8 available on standard pin headers. 8 via side mounted connectors.
18 * Supports SBus, SumH, SumD, Spektrum1024/2048, XBus, PPM, PWM receivers. No external inverters required (built-in).
19 * Dedicated output for programmable LEDs - great for orientation, racing and night flying.
20 * Dedicated I2C port for connection of OLED display without needing flight battery.
21 * Battery monitoring ports for voltage and current.
22 * Buzzer port for audible warnings and notifications.
23 * Solder pads in addition to connectors for Sonar, PPM, RSSI, Current, GPIO, LED Strip, 3.3v,
24 * Developer friendly debugging port (SWD) and boot mode selection, unbrickable bootloader.
25 * Symmetrical design for a super tidy wiring.
26 * Wire up using using pin headers, JST-SH sockets or solder pads. Use either right-angled or straight pin-headers.
27 * Barometer mounted on the bottom of the board for easy wind isolation.
29 ## Serial Ports
31 | Value | Identifier | RX | TX | 5v Tolerant | Notes |
32 | ----- | ------------ | ------------ | ------------ | ----------- | ------------------------------------------------------------------------------------------- |
33 | 1 | USART1 | PA10 | PA9 | YES | Internally connected to USB port via CP2102 IC. Also available on a USART1 JST connector and on through hole pins. |
34 | 2 | USART2 | PA15 | PA14 | YES | Available on USART2 JST port only. |
35 | 3 | USART3 | PB11 / IO2_3 | PB10 / IO2_4 | NO | Available on IO_2, USART3 JST port and through hole pins. |
37 * You cannot use SWD and USART2 at the same time.
38 * You may encounter flashing problems if you have something connected to the USART1 RX/TX pins. Power other devices off and/or disconnect them.
40 ## Pinouts
42 Full pinout details are available in the manual, here:
44 http://seriouslypro.com/spracingf3#manual
46 ### IO_1
48 The 8 pin IO_1 connector has the following pinouts when used in RX_PARALLEL_PWM mode.
50 | Pin | Function | Notes |
51 | --- | -------------- | -------------------------------------------- |
52 | 1 | Ground | |
53 | 2 | VCC_IN | Voltage as-supplied by BEC. |
54 | 3 | RC_CH1 | |
55 | 4 | RC_CH2 | |
56 | 5 | RC_CH5 | |
57 | 6 | RC_CH6 | |
58 | 7 | LED_STRIP | Enable `feature LED_STRIP` |
59 | 8 | VCC | 3.3v output for LOW CURRENT application only |
61 When RX_PPM/RX_SERIAL is used the IO_1 pinout is as follows.
63 | Pin | Function | Notes |
64 | --- | -------------- | -------------------------------------------- |
65 | 1 | Ground | |
66 | 2 | VCC_IN | Voltage as-supplied by BEC. |
67 | 3 | RX_PPM | Enable `feature RX_PPM` |
68 | 4 | GPIO | |
69 | 5 | SoftSerial1_RX | |
70 | 6 | SoftSerial1_TX | |
71 | 7 | LED_STRIP | Enable `feature LED_STRIP` |
72 | 8 | VCC | 3.3v output for LOW CURRENT application only |
74 ### IO_2
76 The 8 pin IO_2 connector has the following pinouts when used in RX_PARALLEL_PWM mode.
78 | Pin | Function | Notes |
79 | --- | ----------------- | -------------------------------------------- |
80 | 1 | Ground | |
81 | 2 | VCC_IN | Voltage as-supplied by BEC. |
82 | 3 | RC_CH3 | |
83 | 4 | RC_CH4 | |
84 | 5 | RC_CH7/SONAR_TRIG | |
85 | 6 | RC_CH8/SONAR_ECHO | |
86 | 7 | ADC_1 | Current Sensor |
87 | 8 | ADC_2 | RSSI |
89 When RX_PPM/RX_SERIAL is used the IO_2 pinout is as follows.
91 | Pin | Function | Notes |
92 | --- | ------------------------- | -------------------------------------------- |
93 | 1 | Ground | |
94 | 2 | VCC_IN | Voltage as-supplied by BEC. |
95 | 3 | RX_SERIAL | UART3 RX |
96 | 4 | | UART3_TX |
97 | 5 | SONAR_TRIG/SoftSerial2_RX | Enable `feature SONAR/SOFTSERIAL` |
98 | 6 | SONAR_ECHO/SoftSerial2_TX | Enable `feature SONAR/SOFTSERIAL` |
99 | 7 | ADC_1 | Current Sensor |
100 | 8 | ADC_2 | RSSI |
102 ### UART1/2/3
104 | Pin | Function | Notes |
105 | --- | -------------- | -------------------------------------------- |
106 | 1 | Ground | |
107 | 2 | VCC_IN | Voltage as-supplied by BEC. |
108 | 3 | TXD | |
109 | 4 | RXD | |
111 ### I2C
113 | Pin | Function | Notes |
114 | --- | -------------- | -------------------------------------------- |
115 | 1 | Ground | |
116 | 2 | 5.0v | Voltage as-supplied by BEC OR USB, always on |
117 | 3 | SCL | |
118 | 4 | SDA | |
120 ### SWD
122 The port cannot be used at the same time as UART2.
124 | Pin | Function | Notes |
125 | --- | -------------- | -------------------------------------------- |
126 | 1 | Ground | |
127 | 2 | NRST | |
128 | 3 | SWDIO | |
129 | 4 | SWDCLK | |