Meridian

The Aerium Meridian is a compact, high-performance GNSS receiver module in M.2 Key E format. Featuring the u‑blox NEO‑M9N chipset and an onboard Bosch BMM150 magnetometer, it delivers multi‑constellation GNSS positioning with integrated heading sensing for UAVs, robotics, and embedded systems.

General

• Powered by u‑blox NEO‑M9N – supports concurrent GPS, GLONASS, Galileo, and BeiDou reception.
• Includes onboard Bosch BMM150 magnetometer connected via M.2 I²C lines.
• GNSS (NEO-M9N) communicates with the host via M.2 UART interface.
• M.2 2242 Key E form factor for seamless integration into embedded platforms.

GNSS Receiver

u-blox NEO-M9N (Multi-Constellation GNSS)

• High-performance GNSS receiver with concurrent reception of GPS, GLONASS, Galileo, and BeiDou.
• Connected to host via M.2 UART interface (TX/RX lines).
• Delivers real-time positioning with configurable update rates up to 25 Hz.
• Provides Timepulse (1PPS) signal output for time synchronization.
• Ideal for UAVs, robotics, and embedded systems requiring precise, reliable navigation.

Parameter	Value
Position Accuracy (CEP)	~2 m
Max Update Rate	25 Hz
Altitude Limit	80,000 m
Velocity Limit	500 m/s
Timepulse Accuracy	±30 ns RMS
Constellation Support	GPS, GLONASS, Galileo, BeiDou
Sensitivity (tracking)	–167 dBm
Security Features	Spoofing/jamming detection

Magnetometer

Bosch BMM150 (Heading Sensor)

• Integrated 3-axis geomagnetic sensor
• Connected to host via M.2 I²C lines
• Enables heading and compass data alongside GNSS
• Ideal for UAV orientation stabilization and navigation fusion

Parameter	Value
Interface	I²C (internal)
Resolution	16-bit
Output Rate	Up to 30 Hz
Magnetic Field Range	±1300 µT

Mechanical

• Weight: ~7 [g]
• Dimensions: 22 mm × 42 mm (M.2 2242 Key E)
• Mounting: Secures into standard M.2 Key E slot with M2 screw

Electrical

General

• Interface: M.2 Key A/E

• Host interface:

  • USB (for GNSS data from NEO-M9N)
  • UART (for GNSS data from NEO-M9N)
  • I²C (used internally for onboard BMM150 magnetometer)

  

Electrical Pinout

Main Connector

• Connector Definition

  Type	Part Number	Part Name
  Board Connector	SM06B-SRSS-TB	JST-SH
  Cable Connector	SHR-06V-S-B	JST-SH

• Connector Pinout

  Pin	Name	Description
  1	VCC	3.3 V output
  2	PPS	Pulse-per-second output (3.3 V logic)
  3	INT	Interrupt / Data Ready (3.3 V logic)
  4	GND	Ground
  5	GND	Ground
  6	GND	Ground