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The SparkFun MicroMod GNSS Function Board features a u-blox NEO-M9N 92-channel GNSS receiver, supporting concurrent reception of GPS, GLONASS, Galileo, and BeiDou constellations with approximately 1.5 m horizontal accuracy. It connects to a MicroMod Main Board via the solderless M.2 connector and communicates over UART, SPI, or I²C.

An onboard rechargeable battery backs up the RTC, reducing time-to-first-fix from 24 seconds (cold start) to approximately 2 seconds (hot start). The module includes jamming and spoofing detection, a built-in SAW filter with LNA, and is configurable via the SparkFun Arduino library or u-blox u-center software.

Key Features

  • 92-Channel u-blox NEO-M9N – GPS, GLONASS, Galileo, and BeiDou (4 concurrent)
  • 1.5 m Horizontal Accuracy – High-precision positioning
  • 25 Hz Max Update Rate – Fast position updates
  • Hot Start in ~2 s – Rechargeable RTC backup battery
  • Jamming and Spoofing Detection – Built-in SAW filter and LNA
  • MicroMod M.2 Connector – Solderless connection to Main Board
  • USB-C – For module configuration with u-center
  • U.FL Antenna Connector – Connect your choice of GNSS antenna

Specifications

  • Receiver – u-blox NEO-M9N, 92 channels
  • Constellations – GPS, GLONASS, Galileo, BeiDou (concurrent)
  • Accuracy – 1.5 m horizontal, 0.05 m/s velocity, 0.3° heading
  • Update Rate – Up to 25 Hz
  • TTFF – Cold: 24 s, Hot: 2 s
  • Max Altitude – 80,000 m
  • Max Velocity – 500 m/s
  • Current (tracking) – 27 mA (GPS only), 31 mA (GPS+GLONASS), 36 mA (all four) @ 3.0 V
  • Voltage Regulator – 3.3 V / 600 mA (AP2112K)
  • Protocols – NMEA, UBX, RTCM over SPI, USB, UART, or I²C
  • Battery Backup – 1.5 mAh rechargeable for RTC

Package Contents

  • 1× SparkFun MicroMod GNSS Function Board (NEO-M9N)
Note: A GNSS antenna, MicroMod Processor Board, and MicroMod Main Board are required but not included. Purchase these separately.

Resources

The SparkFun MicroMod GNSS Function Board - NEO-M9N appears in the following collections:

SKU SF-GPS-18378