Pixhawk 3 Pro (Discontinued)

WARNING

PX4 does not manufacture this (or any) autopilot. Contact the manufacturer for hardware support or compliance issues.

The Pixhawk^® 3 Pro is based on the FMUv4 hardware design (Pixracer) with some upgrades and additional features. The board was designed by Drotek^® and PX4.

INFO

The main hardware documentation is here: https://drotek.gitbook.io/pixhawk-3-pro/hardware

TIP

This autopilot is supported by the PX4 maintenance and test teams.

Quick Summary

• Microcontroller: STM32F469; Flash size is 2MiB, RAM size is 384KiB
• ICM-20608-G gyro / accelerometer
• MPU-9250 gyro / accelerometer / magnetometer
• LIS3MDL compass
• Sensors connected via two SPI buses (one high rate and one low-noise bus)
• Two I2C buses
• Two CAN buses
• Voltage / battery readings from two power modules
• FrSky^® Inverter
• 8 Main + 6 AUX PWM outputs (Separate IO chip, PX4IO)
• microSD (logging)
• S.BUS / Spektrum / SUMD / PPM input
• JST GH user-friendly connectors: same connectors and pinouts as Pixracer

Where to buy

From Drotek store (EU) :

• Pixhawk 3 Pro (Pack)
• Pixhawk 3 Pro

From readymaderc (USA) :

• Pixhawk 3 Pro

Building Firmware

TIP

Most users will not need to build this firmware! It is pre-built and automatically installed by QGroundControl when appropriate hardware is connected.

To build PX4 for this target:

make px4_fmu-v4pro_default

Debug Port

The board has FMU and IO debug ports as shown below.

The pinouts and connector comply with the Pixhawk Debug Mini interface defined in the Pixhawk Connector Standard (JST SM06B connector).

Pin	Signal	Volt
1 (red)	VCC TARGET SHIFT	+3.3V
2 (blk)	CONSOLE TX (OUT)	+3.3V
3 (blk)	CONSOLE RX (IN)	+3.3V
4 (blk)	SWDIO	+3.3V
5 (blk)	SWCLK	+3.3V
6 (blk)	GND	GND

For information about wiring and using this port see:

• SWD Debug Port
• PX4 System Console (Note, the FMU console maps to UART7).

Serial Port Mapping

UART	Device	Port
UART1	/dev/ttyS0	WiFi
USART2	/dev/ttyS1	TELEM1 (flow control)
USART3	/dev/ttyS2	TELEM2 (flow control)
UART4
UART7	CONSOLE
UART8	SERIAL4