HOLYBRO M9N GPS V2

HOLYBRO M9N GPS V2 – High-Precision Multi-GNSS Module with Integrated Compass

The HOLYBRO M9N GPS V2 is a high-performance GNSS module designed for professional drones, UAVs and other unmanned systems. At the core of the module is the u-blox M9N GNSS receiver, which can receive and process multiple global navigation satellite systems simultaneously.

GPS, Galileo, GLONASS and BeiDou can be used simultaneously. By processing multiple GNSS constellations in parallel, a large number of available satellites can be used by the flight controller for navigation and position estimation.

The V2 version features a redesigned and robust enclosure with an IP67 protection rating. An integrated IST8310 compass, a high-performance ceramic patch antenna, improved filtering and additional RF shielding complete the GNSS module.

Multi-GNSS Reception

The u-blox M9N supports simultaneous reception of up to four GNSS systems. This allows a large number of available satellites to be used for positioning and navigation.

• GPS
• Galileo
• GLONASS
• BeiDou
• QZSS
• Up to 4 GNSS systems simultaneously

Integrated IST8310 Compass

The integrated IST8310 magnetometer provides additional heading information to the flight controller and supports orientation and navigation of the UAV system.

High-Performance Antenna

The module features a 25 × 25 × 4 mm ceramic patch antenna with an antenna gain of 1.5 dBi. The active antenna circuitry and 22 dB LNA gain support reliable GNSS reception.

Improved V2 Signal Processing

The V2 version incorporates additional measures to improve signal integrity. A high-performance SAW filter and additional RF shielding around the receiver module help reduce unwanted high-frequency interference.

• High-performance SAW filter
• Additional RF shielding
• MAX2659ELT+ RF amplifier
• Low-noise 3.3 V voltage regulator
• Rechargeable backup power storage for warm starts

Robust IP67 Enclosure

The redesigned enclosure provides an IP67 protection rating. This makes the module dust-tight and protected against temporary immersion, making it suitable for UAV systems operated under more demanding environmental conditions.

RGB Status Indicator

An integrated RGB LED is controlled by the flight controller and can indicate different system states. In the V2 version, the buzzer, safety switch and separate safety and GPS fix LEDs were removed to reduce potential electromagnetic and radio-frequency interference.

Features

• u-blox M9N GNSS receiver
• Up to 4 GNSS systems simultaneously
• GPS, Galileo, GLONASS, BeiDou and QZSS
• Integrated IST8310 compass
• 25 × 25 × 4 mm ceramic patch antenna
• High-performance SAW filter
• Additional RF shielding
• RGB status LED
• IP67 protection rating
• Support for PX4 and ArduPilot

GNSS Specifications

• GNSS Receiver: u-blox M9N
• Simultaneous GNSS Systems: up to 4
• GPS: L1
• Galileo: E1
• GLONASS: L1
• BeiDou: B1
• SBAS: L1
• QZSS: L1
• Accuracy: 1.5 m CEP
• Navigation Rate: up to 25 Hz with 4 GNSS systems used simultaneously

Supported GNSS Augmentation Systems

• EGNOS
• GAGAN
• MSAS
• WAAS
• QZSS L1S

Technical Specifications

• Compass: IST8310
• Output Protocols: UBX (u-blox) and NMEA
• Default Baud Rate: 115200
• Input Voltage: 4.7–5.2 V
• Current Consumption: less than 200 mA at 5 V
• Antenna: 25 × 25 × 4 mm ceramic patch antenna
• Antenna Gain: 1.5 dBi
• LNA Gain: 22 dB
• Operating Temperature: -40 °C to +80 °C
• Dimensions: Ø 51 × 18.5 mm
• Weight: 36.8 g
• Protection Rating: IP67
• Cable Length: 26 cm

Compatibility

The HOLYBRO M9N GPS V2 is suitable for flight controllers and UAV systems based on PX4 and ArduPilot. The RGB status LED is supported from PX4 1.14 and ArduPilot 4.4.0 onward.

Note for ArduPilot: If standard compass calibration is not possible, the parameter COMPASS_ORIENT=6 (Yaw270) can be used for the corresponding compass orientation.