Table of Contents
The following table gives the relationship between the output of this command and the uart devices:
|NuttX UART||PX4FMUv1 UART||PX4FMUv2 (Pixhawk) UART|
|/dev/ttyS0||UART1 (NSH console)||IO DEBUG (RX only)|
|/dev/ttyS4||N/A||N/A (UART5, IO link)|
|/dev/ttyS5||N/A||SERIAL5 (UART7, NSH console do only use as console)|
Common UART Pinout
|2||Tx (out)||5||FTDI RX (yellow) (in)|
|3||Rx (in)||4||FTDI TX (orange) (out)|
|4||CTS (in)||6||FTDI RTS (green) (out)|
|5||RTS (out)||2||FTDI CTS (brown) (in)|
|6||GND||1||FTDI GND (black)|
Radio Control (RC)
PWM ESC / Servos
Pixhawk doesn't provide power on servo rails. To power servos connect external BEC to servo rail.
MAIN OUT should be used to connect all servos and ESCs (AUX OUT can be used in custom setups to drive additional servos or other peripherals).
Digital Airspeed Sensor
External USB Port
External USB port can be mounted on the outside of the plane / copter / rover and provides convenient access.
External Multicolor LED
External multicolor LED connects via I2C and has the same functionality as the in-built led and can be mounted anywhere on the system.
I2C splitter allows to connect multiple peripherals to the I2C port, including the external compass on the GPS.