mRo Nexus

The mRo Nexus is new member of mRo’s Pixracer autopilot family.

../_images/mro-nexus-top.png
../_images/mro-nexus-bottom.png

Overview

The mRo Nexus is a member of the next generation of mRobotics’ family of Pixracer autopilots. It has been designed for ultra compact applications which primarily use CAN peripherals, as well as standard GPS/Compass or Airspeed sensors. It includes an integrated ADS-B receiver for avoidance.

Tip

At time of writing the autopilot is still being evolved/improved. The final version may very slightly from the information provided here.

Specifications

  • Processor:

    • MCU - STM32H743VIH6

    • 2MB flash allows full features of ArduPilot to be flashed

  • Sensors

    • Gyro/Accelerometer: Invensense ICM-40609D / Gyro (? KHz)

    • Barometer: DSP310

    • RM3100 Precision Compass

  • Power

    • 5-5.5VDC from USB or PowerBrick connector. Optional/recommended ACSP4 +5V/+12V Power Supply.

    • Ultra low noise LDOs for sensors and FMU

  • Interfaces/Connectivity

    • Dual CAN/DroneCAN ports

    • MicroSD card reader

    • Micro-C USB

    • RGB LED

    • GPS (serial + I2C)

    • UART for serial RC input

    • Connectors: GPS+I2C (USART4),CAN1, CAN2, USART7 (TxD, RxD), POWER-BRICK(VDD, Voltage, Current, GND).

  • Dimensions

    • Weight ?

    • Size

Connector pin assignments

Unless noted otherwise all connectors are JST GH

UART7 connector

PIN

SIGNAL

VOLTAGE/TOLERANCE

1

+5V

+5V

2

TX1

+3.3V/5V

3

RX1

+3.3V/5V

4

GND

GND

USART4 (GPS+I2C) connector

PIN

SIGNAL

VOLTAGE/TOLERANCE

1

+5V

+5V

2

TX

+3.3V/5V

3

RX

+3.3V/5V

4

SCL

+3.3V/5V

5

SDA

+3.3V/5V

6

GND

GND

CAN1 and CAN2 connectors

PIN

SIGNAL

VOLTAGE/TOLERANCE

1

+5V

+5V

2

CH

+3.3V/5V

3

CL

+3.3V/5V

4

GND

GND

Power connector

PIN

SIGNAL

VOLTAGE/TOLERANCE

1

+5V in

+5V

2

+5V in

+5V

3

CURR sense in

+3.3V/5V

4

VOLT sense in

+3.3V/5V

5

GND

GND

6

GND

GND

Default UART order

Parameter

Default Protocol**

Connector/Suggested Use

SERIAL0

console

USB

SERIAL1

Telemetry1

UART7/Serial RC input

SERIAL2

Telemetry2

USB (second composite USB interface)/SLCAN

SERIAL3

GPS1

UART4/GPS

** User may change SERIALx_PROTOCOL as required for application

Where to Buy