CUAV Pixhack v3 (FMUv3)

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

The CUAV Pixhack V3 flight controller board is a flexible autopilot intended primarily for manufacturers of commercial systems.

The board is a variant of the SOLO Pixhawk® 2 (PH2) flight controller, which is in turn based on the Pixhawk-project FMUv3 open hardware design. It runs PX4 on the NuttX OS, and is fully compatible with both PX4 or ArduPilot® (APM) firmware.

Pixhack V3 has significant improvements with respect to the original design, including better interface layout and the addition of vibration damping and a thermostat system.

Pixhack v3

:::note This flight controller is manufacturer supported. :::

Quick Summary

• Microprocessor:

  • STM32F427

  • STM32F100 (Failsafe co-processor)

• Sensors:

  • Accelerometers (3): LS303D, MPU6000, MPU9250/hmc5983

  • Gyroscopes (3): L3GD20, MPU6000, MPU9250

  • Compass (2): LS303D, MPU9250

  • Barometer (2): MS5611 X2

• Interfaces:

  • MAVLink UART (2)

  • GPS UART (2)

  • DEBUG UART (1)

  • RC IN (for PPM, SBUS, DSM/DSM2)

  • RSSI IN: PWM OR 3.3ADC

  • I2C (2)

  • CAN BUS (1)

  • ADC IN: 3.3V X1 , 6.6V X1

  • PWM OUT: 8 PWM IO + 4 IO

• Power System:

  • PM POWER IN: 4.5 ~ 5.5 V

  • USB POWER IN: 5.0 V +- 0.25v

• Weight and Dimensions:

  • Weight: 63g

  • Width: 68mm

  • Thickness: 17mm

  • Length: 44mm

• Other Characteristics:

  • Operating temperature: -20 ~ 60°C

Availability

The board can be purchased from:

• store.cuav.net

• leixun.aliexpress.com/store

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-v3_default

Pinouts and Schematics

• Documentation/wiring guides

Serial Port Mapping

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