Holybro pix32 Flight Controller (Discontinued)

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

The Holybro^® pix32 autopilot (also known as "Pixhawk 2", and formerly as HKPilot32) is based on the Pixhawk^®-project FMUv2 open hardware design. This board is based on hardware version Pixhawk 2.4.6. It runs the PX4 flight stack on the NuttX OS.

pix32

As a CC-BY-SA 3.0 licensed Open Hardware design, schematics and design files should be available here.

:::tip The Holybro pix32 is software compatible with the 3DR Pixhawk 1. It is not connector compatible, but is otherwise physically very similar to the 3DR Pixhawk or mRo Pixhawk. :::

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

Key Features

Main System-on-Chip: STM32F427
CPU: 32-bit STM32F427 Cortex^® M4 core with FPU
RAM: 168 MHz/256 KB
Flash: 2 MB
Failsafe System-on-Chip: STM32F103
Sensors:
ST Micro L3GD20 3-axis 16-bit gyroscope
ST Micro LSM303D 3-axis 14-bit accelerometer / magnetometer
Invensense^® MPU 6000 3-axis accelerometer/gyroscope
MEAS MS5611 barometer
Dimensions/Weight
Size: 81x44x15mm
Weight: 33.1g
GPS: u-blox^® super precision Neo-7M with compass
Input Voltage: 2~10s (7.4~37V)

Connectivity

1x I2C
2x CAN
3.3 and 6.6V ADC inputs
5x UART (serial ports), one high-power capable, 2x with HW flow control
Spektrum DSM / DSM2 / DSM-X® Satellite compatible input up to DX8 (DX9 and above not supported)
Futaba^® S.BUS compatible input and output
PPM sum signal
RSSI (PWM or voltage) input
SPI
External microUSB port
Molex PicoBlade connectors

Where to Buy

shop.holybro.com

Accessories

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-v2_default

Debug Port

See 3DR Pixhawk 1 > Debug Ports.

Pinouts and Schematics

The board is based on the Pixhawk project FMUv2 open hardware design.

FMUv2 + IOv2 schematic -- Schematic and layout

::: info As a CC-BY-SA 3.0 licensed Open Hardware design, all schematics and design files are available. :::

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 |

Holybro Pix32