Overview

The TOXU TX-DroneCAN M9N is an integrated multi-GNSS navigation module developed for UAVs, drones, robotic platforms and autonomous systems using compatible DroneCAN flight-control architectures.

This model is designed as a compatible alternative to the Holybro DroneCAN M9N GPS module. It is manufactured and supplied by TOXU and is not an original Holybro product.

The TX-DroneCAN M9N integrates a u-blox NEO-M9N GNSS receiver, an STM32G4 processor, a BMM150 three-axis electronic compass, a ceramic patch antenna, a low-noise amplifier and LED status indicators inside a compact ABS housing.

The GNSS receiver supports concurrent reception of GPS, GLONASS, Galileo and BeiDou satellite signals. It also supports SBAS augmentation systems, including WAAS, EGNOS, MSAS and QZSS.

The module uses the DroneCAN communication protocol at 1 Mbit/s. Compared with a conventional serial-interface GPS module, the CAN bus architecture allows compatible peripheral devices to share the same CAN network without occupying an additional serial port on the flight controller.

With integrated GNSS positioning, heading sensing, antenna reception and CAN bus communication, the TX-DroneCAN M9N helps simplify UAV system installation and reduce the number of separate navigation components.

Key Features

u-blox NEO-M9N GNSS Receiver

The module integrates the u-blox NEO-M9N GNSS receiver and supports concurrent reception of up to four GNSS constellations: GPS, GLONASS, Galileo and BeiDou.

Multi-Constellation L1 Positioning

Supports GPS L1 C/A, GLONASS L1OF, BeiDou B1I and Galileo E1B/C satellite signals for standard-precision positioning in UAV and robotic navigation applications.

GNSS Augmentation Support

Supports SBAS augmentation systems, including WAAS, EGNOS, MSAS and QZSS, where regional signal availability and receiver configuration permit.

STM32G4 Processing Platform

An STM32G4 processor operating at 170 MHz with 512 KB Flash provides onboard processing and manages DroneCAN communication with compatible flight-control systems.

BMM150 Electronic Compass

The integrated BMM150 three-axis geomagnetic sensor provides heading information for compatible UAV autopilot and robotic navigation systems.

DroneCAN Communication at 1 Mbit/s

The module communicates through DroneCAN at 1 Mbit/s, enabling connection to compatible CAN bus flight controllers without occupying an additional serial port.

PX4 and ArduPilot Compatibility

Designed for compatible flight controllers running PX4 or ArduPilot firmware. The CAN interface, connector pinout and firmware configuration must be confirmed before installation.

Integrated Ceramic Patch Antenna

Includes a built-in 25 × 25 × 4 mm ceramic patch antenna with 1.5 dBi antenna gain and a 22 dB low-noise amplifier.

MAX2659ELT+ RF Amplifier

The integrated MAX2659ELT+ RF amplifier provides low-noise amplification for the received GNSS signals.

Configurable Navigation Update Rate

Provides a default navigation update rate of 5 Hz and supports a maximum update rate of 10 Hz.

LED Status Indication

Integrated LED indicators provide visible power and GNSS positioning status information during installation and operation.

Compact Integrated Construction

The GNSS receiver, processor, compass, antenna, LNA and communication circuit are integrated into a compact ABS housing measuring 54 mm in diameter and 14.5 mm in thickness.

Holybro-Compatible Alternative

The TX-DroneCAN M9N is manufactured by TOXU as a compatible alternative for relevant Holybro DroneCAN M9N applications. Compatibility should be verified according to the connector, pinout, firmware, mounting structure and system configuration.

Technical Specifications

Applications

UAV and Drone Navigation

Provides multi-GNSS positioning and electronic compass information for compatible multirotor, fixed-wing and other unmanned aerial platforms.

PX4 Autopilot Systems

Supports integration with compatible PX4-based flight controllers through the DroneCAN communication interface.

ArduPilot Autopilot Systems

Can be used with compatible ArduPilot flight-control platforms that support DroneCAN GNSS peripherals.

Robotic Platforms

Suitable for robotic systems requiring L1 multi-GNSS positioning, heading information and CAN bus communication.

Autonomous Vehicle Prototypes

Can be integrated into compatible unmanned and autonomous vehicle prototypes requiring a compact GNSS and compass unit.

Industrial Navigation Equipment

Suitable for system integrators developing compact positioning and navigation equipment based on DroneCAN communication.

System Integration

The TX-DroneCAN M9N combines GNSS signal reception, satellite positioning, heading sensing, onboard processing and DroneCAN communication in one compact unit.

A typical system configuration is:

GNSS Satellites → Built-in Ceramic Antenna → u-blox NEO-M9N Receiver → STM32G4 Processor → DroneCAN Network → Compatible Flight Controller → Autopilot System

The BMM150 compass provides heading information to the compatible flight-control system, while the u-blox NEO-M9N receiver provides GNSS positioning data. The STM32G4 processor manages the onboard data and DroneCAN communication.

The module operates from a 4.7–5.2 V power supply and communicates at 1 Mbit/s through the CAN bus. Before installation, customers should verify the connector pinout, power supply, CAN wiring, termination configuration and flight-controller firmware settings.

Multiple compatible CAN peripherals may share the same CAN network when the flight controller, CAN wiring and termination are configured correctly.

Mounting accessories may be supplied according to the selected product configuration. Flight controllers, UAV frames and other external equipment shown for application demonstration are not included unless otherwise specified.

Complete GNSS Solution Support

GNSS Antenna Matching

TOXU provides matched GNSS antennas, including ceramic antennas, patch antennas and RTK antennas, for different positioning, frequency and installation requirements.

RF Cable Assembly

TOXU provides customized RF cable assemblies with SMA, MMCX, MCX, FAKRA and other connector options.

Connector Solution

TOXU supports connector selection, cable-length customization and interconnection solutions according to the customer’s flight controller and equipment structure.

GNSS Board Development

TOXU can integrate GNSS modules, processors, communication interfaces and related components into customized receiver boards.

Hardware Customization

TOXU supports PCB design, prototype development, component selection, product assembly and mass production for customized GNSS positioning products.

Why Choose TOXU

Compatible Alternative Development

TOXU develops compatible GNSS hardware alternatives according to customer requirements for electrical interfaces, mechanical structures, communication protocols and system integration.

Complete GNSS Hardware Capability

Our product and manufacturing capabilities cover GNSS modules, receiver boards, antennas, RF cable assemblies, connectors and complete navigation hardware integration.

OEM and ODM Customization

Customization support is available for PCB design, housing structure, cable length, connector type, labeling and packaging.

Prototype-to-Production Support

TOXU supports customers from sample development and system verification through to component sourcing, product assembly and batch production.

Application-Oriented Technical Support

Our team can assist with GNSS receiver selection, antenna matching, CAN interface confirmation, RF cable design and connector selection.

Quality Management

TOXU operates under IATF 16949 and ISO 9001 quality-management systems to support consistent manufacturing and product quality control.

FAQ – Frequently Asked Questions

Q: Is the TX-DroneCAN M9N an original Holybro product?

No. The TX-DroneCAN M9N is manufactured and supplied by TOXU as a compatible alternative for relevant Holybro DroneCAN M9N applications. It is not manufactured, authorized or endorsed by Holybro.

Q: Can it replace the Holybro DroneCAN M9N GPS module directly?

The product is designed as a compatible alternative. However, customers should confirm the connector pinout, supply voltage, CAN wiring, firmware configuration, termination settings and mounting structure before replacement.

Q: Which GNSS receiver does the module use?

The TX-DroneCAN M9N integrates the u-blox NEO-M9N GNSS receiver.

Q: Which processor is integrated into the module?

The module uses an STM32G4 processor operating at 170 MHz with 512 KB Flash for onboard processing and DroneCAN communication.

Q: Does the module include an electronic compass?

Yes. It integrates a BMM150 three-axis geomagnetic sensor to provide heading information to compatible flight-control systems.

Q: Does the TX-DroneCAN M9N support RTK positioning?

No. This is a standard-precision L1 GNSS navigation module with a specified positioning accuracy of 2.5 m. Customers requiring centimeter-level RTK positioning should select a suitable TOXU GNSS RTK module, receiver board or integrated receiver.

Q: Is this a GNSS/INS module?

No. The module contains a BMM150 electronic compass, but it does not include the complete IMU and sensor-fusion functions required for a GNSS/INS system.

Q: Which satellite systems and signals are supported?

The module supports GPS L1 C/A, GLONASS L1OF, Galileo E1B/C and BeiDou B1I signals, with concurrent reception of up to four GNSS constellations.

Q: What communication interface does it use?

It communicates through DroneCAN at 1 Mbit/s using a GHR-04V-S port.

Q: Is it compatible with PX4 and ArduPilot?

It is designed for compatible PX4- and ArduPilot-based flight-control systems that support DroneCAN GNSS peripherals. Hardware and firmware compatibility should be confirmed before installation.

Q: Does the product include a GNSS antenna?

Yes. It includes a built-in 25 × 25 × 4 mm ceramic patch antenna with 1.5 dBi antenna gain and a 22 dB LNA.

Q: Can the cable length, connector and housing be customized?

Yes. TOXU supports cable-length, connector, housing, labeling and packaging customization according to project and order requirements.

Q: Can TOXU provide customized GNSS solutions?

Yes. TOXU provides complete GNSS hardware integration services, including customized receiver boards, GNSS antennas, RF cable assemblies, connectors and PCB hardware development.

Q: Can the GNSS module be integrated into a customized board?

Yes. TOXU can integrate GNSS modules, processors and communication interfaces into customized PCB boards and provide prototype development and mass-production support.

Q: Can TOXU provide antenna and cable solutions?

Yes. TOXU provides matched GNSS antennas, RF cables and connectors to complete the positioning system solution.

Trademark Notice

Holybro is referenced solely to explain product compatibility. Holybro and other third-party product names and trademarks belong to their respective owners. TOXU is not affiliated with or endorsed by Holybro.