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mRo Pixracer Pro

by mRobotics

Community
Closed Hardware

ArduPilot notes the Pixracer Pro is still evolving, so users should review release updates when deploying new firmware builds.

mRo Pixracer Pro flight controller board with JST-GH connectors across the top edge.

Key Specifications

MCU
STM32H743
STM32H742xI/G, STM32H743xI/G data sheet
Mounting Pattern
Custom
Connectivity
7 UARTs ā€¢ 1 SPI ā€¢ 2 CAN
Power
5ā€“5.5 V ā€¢ USB
Onboard Sensors
3Ɨ IMU ā€¢ 1Ɨ Barometer ā€¢ 1Ɨ Magnetometer
Firmware Support
ArduPilot
Reference Docs
ArduPilot Autopilot Hardware OptionsArduPilot Autopilot Hardware Options
Image: ArduPilot Documentation ā†—

Detailed Specifications

Core Specifications

Quick reference for the primary hardware capabilities.

MCU
STM32H743
STM32H742xI/G, STM32H743xI/G data sheet
 Mounting Custom
Power 5ā€“5.5 V ā€¢ USB I/O Overview 7 UARTs ā€¢ 1 SPI ā€¢ 2 CAN
PWM & Storage 8 PWM outputs ā€¢ microSD logging Sensors 3Ɨ IMU ā€¢ 1Ɨ Barometer ā€¢ 1Ɨ Magnetometer

Hardware Overview

Core MCU, mounting, and mechanical data.

Base hardware specification
Default
MCU
STM32H743
STM32H742xI/G, STM32H743xI/G data sheet
 Mounting Custom

Power Supply

Input rails, regulators, and redundancy.

Voltage ā€”
Inputs 2
Redundancy ā€”

Power Inputs

USB USB
Connector:  USB Type-C
Voltage:  5ā€“5.5 V
POWER Power Module
Connector:  PowerBrick (JST-GH 6-pin)
Voltage:  5ā€“5.5 V
Input Voltage ā€” Redundancy ā€”

Ultra-low-noise regulators recommended with optional ACSP4 power supply.

Connectivity & I/O

Port availability, buses, and expansion options.

UARTs 7 CAN Bus 2
PWM Outputs 8 SD Card āœ“ Yes
Ethernet āœ— No

Peripheral Ports

Port Type Default Function Voltage / Level Connector Notes
TELEM1 UART Primary MAVLink telemetry 3.3 V signal / 5 V selectable supply JST-GH 6-pin Hardware flow control with selectable 3.3 V or 5 V logic level for telemetry radios.
TELEM2 UART Secondary telemetry or RTK link 3.3 V signal / 5 V selectable supply JST-GH 6-pin Full-duplex UART with RTS/CTS for redundant radios or companion computers.
UART1/UART7 harness UART Auxiliary payload and console UARTs 3.3 V signal JST-GH 8-pin Combined harness exposing USART1 and UART7 for scripting, companion links, or peripheral control.
GPS/I2C GPS GPS + compass harness 3.3 V signal / 5 V supply JST-GH 6-pin Provides GNSS UART alongside shared SDA/SCL for external magnetometers.
FrSky UART8 UART SmartPort telemetry 3.3 V signal JST-GH 4-pin Dedicated USART8 header for FrSky SmartPort in/out with power and ground.
RCIN/RSSI RC Serial RC input with RSSI 3.3 V signal / 4.5 V receiver supply JST-GH 5-pin Supports SBUS, DSM, SumD, ST24, and PPM with dedicated analog RSSI input.
CAN1 CAN DroneCAN peripheral bus Differential CAN / 5 V supply JST-GH 4-pin Powered CAN-FD port for smart power modules, ESCs, or sensors.
CAN2 CAN Redundant DroneCAN bus Differential CAN / 5 V supply JST-GH 4-pin Secondary CAN channel for redundant peripherals or ESC networks.
PWM OUT (1-8) PWM Motor/servo outputs Selectable 3.3/5 V signal (servo rail) 8-channel servo header Supports PWM or DShot with configurable signal level jumpers.
SPI6 SPI External SPI payloads 3.3 V JST-GH 6-pin Breaks out SPI6 with chip select for sensors, loggers, or companion devices.
Power Brick Power Primary power module input 5.0-5.5 V JST-GH 6-pin Accepts ACSP4 or similar power modules with current and voltage telemetry.
USB-C USB Console and firmware updates 5 V USB Type-C Provides composite USB device with bootloader, console, and SLCAN access.
Onboard buzzer Other Audible status output 5 V Onboard driver High-output piezo buzzer driven by dedicated amplifier for alarms.
RGB LED Other Status indication 5 V Onboard LED Addressable RGB status LED indicating flight mode and warnings.

Onboard Sensors

IMU, barometer, and magnetometer load-outs per revision.

IMU
TDK InvenSense ICM-20602
TDK InvenSense ICM-20602 datasheetMatek F765-Wing ā€” ArduPilot Hardware OverviewMatek F765-Wing ā€” ArduPilot Hardware Overview
TDK InvenSense ICM-20948
TDK InvenSense ICM-20948 datasheetCube Orange/Orange+ ā€” ArduPilot Hardware OverviewCube Orange+ ā€” PX4 User GuideCube Orange/Orange+ ā€” ArduPilot Hardware Overview
Bosch Sensortec BMI088
Bosch Sensortec BMI088 datasheetCUAV Pixhawk V6X ā€” ArduPilot Hardware OverviewPixhawk 6X ā€” PX4 User GuideCUAV Pixhawk V6X ā€” ArduPilot Hardware Overview
Barometer
Infineon DPS310
Infineon DPS310 datasheetMatek F405-Wing ā€” ArduPilot Hardware OverviewMatek F405-Wing ā€” ArduPilot Hardware Overview
Magnetometer
TDK InvenSense ICM-20948
TDK InvenSense ICM-20948 datasheetCube Orange/Orange+ ā€” ArduPilot Hardware OverviewCube Orange+ ā€” PX4 User GuideCube Orange/Orange+ ā€” ArduPilot Hardware Overview

Additional Features

Value-add capabilities bundled with the controller.

  • āœ“ 256KB FRAM and microSD logging for high-rate data capture
  • āœ“ Dual DroneCAN ports and dedicated FrSky telemetry UART
  • āœ“ Selectable 3.3V or 5V servo rail levels for ESC compatibility

Known Issues & Advisories

BMI088 IĀ²C driver produces unstable gyro data

PX4's bmi088_i2c driver reports severe gyro jitter and unusable orientation on Crazyflie and other IĀ²C-based boards.

Medium
Reported
Source BMI088 connected via I2C does not work right
Affects Bosch Sensortec BMI088
Onboard IMU

Documentation & Vendor Resources

Edit on GitHub

Propose improvements to this controller entry.

ā†—
Contributors: Jairus
Last updated:
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