8
11. USART1 connector: Used for 5.0V I/O ports (OSD, etc.)
DO NOT use it when the USB port is connected.
DO NOT use it when the USART1 headers are in use.
USART1 connector
1
GND
2
VCC
3
TXD
4
RXD
12. I2C1 connector: To connect to external sensors and OLED display. SCL and SDA are the signal
ports of the 3.3V.
I2C1 connector
1
GND
2
5.0V
3
SCL
4
SDA
1.4
Software
The
SF Racing F3
runs the
Cleanflight
and
Betaflight
flight control software which has a community
with a growing number of friendly developers and users. Being open-source means that you can
also contribute to the system.
SunFounder