User Manual

BOTTOM
SOLDER PADS (3)
n
CH1 / PPM
n
CH2 / GPIO
n
ADC1 / RSSI
n
ADC2 / CURRENT METER
n
CH7 / SONAR TRIGGER
n
CH8 / SONAR ECHO
n
LED_STRIP
n
3.3v
UART1 (1)
1 l GND
2 VCC
3 TXD
4 RXD
A
1 2
3
5
4
6
I2C1 (2)
1 l GND
2 5.0v
3 SCL
4 SDA
UART1 headers - Used for 5.0v Serial IO. (OSD, etc.)
MUST NOT be used when a cable is connected to the USB port.
MUST NOT be used at the same time as the UART1 headers.
I2C1 connector - Used for external sensors and OLED displays.
The SCL and SDA are 3.3v signals.
5.0v is always supplied via the on-board voltage regulators, even when powering via USB.
WARNING: logic level converters are REQUIRED if your sensors require 5.0v signals.
Solder pads
Use instead of the JST-SH connectors as-required.
NOTE: Good soldering skills required.
SPRacingF3 http://seriouslypro.com - http://cleanflight.com Page 5
Soldering
IMPORTANT:
• Use a high quality soldering iron and good solder.
• Tin/Lead solder is MUCH easier to use other Lead-free solder.
• Use solder with flux and remove any flux residue after soldering.
• Check for and remove solder balls you may have created after soldering - use a magnifying glass.
• Ensure you have sufficient fume extraction when soldering.
• Pin headers that connect to the GND signal will be more difficult to solder because the PCB will sink the heat
from your soldering iron. Solder the signal pins, then the VCC pins, then the GND pin - by the time you get
to the GND pins you will have heater the board more and it will be easier to solder them.
• If you have never soldered before then DO NOT attempt to solder the flight controller, practice on something
else first.
The flight controller is supplied with a bag of pin-headers. Some are straight, some are right-angled. Choose
very carefully which ones you want to use. You can solder headers to top or the bottom of the board.
Once you have soldered pin headers in place DO NOT attempt to remove them unless you are highly skilled in
de-soldering and have the correct tools.
Cables
The flight controller is supplied with two 8-pin JST-SH cables and two 4-pin JST-SH cables. The 8-pin JST-SH cables
are for the IO_1 and IO_2 connectors. The 4-pin JST-SH cables are for any of the UART1/2/SWD/I2C1 connec-
1. UART1 connector
2. I2C1 connector
3. ADC pads (Current, RSSI)
4. PPM & GPIO pads
5. SONAR pads
6. LED_STRIP & 3.3v pads
A. Barometer (Pressure sensor,
Deluxe Only)