SparkFun GPS Breakout - NEO-M9N, Chip Antenna (Qwiic)

The SparkFun NEO-M9N GPS Breakout is a top-tier GPS board, equipped with a chip antenna and a multitude of configuration options. This board features a 92-channel u-blox M9 engine GNSS receiver, capable of receiving signals from GPS, GLONASS, Galileo, and BeiDou constellations with an accuracy of approximately 1.5 meters. It supports concurrent reception from four GNSS, significantly enhancing position accuracy and reducing lock time. It also includes a rechargeable battery for backup power, ensuring a hot lock within seconds. This u-blox receiver is compatible with I²C (known as Display Data Channel), making it a perfect fit for Qwiic systems, without occupying valuable UART ports. With the Qwiic system, soldering is not required to connect it to your system, but 2.54mm-spaced pins are available if you prefer using a breadboard.

The NEO-M9N module is equipped with jamming and spoofing detection, able to report such events to the host for appropriate responses. It also includes a Surface Acoustic Wave (SAW) filter and a Low Noise Amplifier (LNA) in its RF path, ensuring normal operation even under strong RF interferences.

The NEO-M9N module can be configured using the popular u-center windows program. This allows users to set baud rates, update rates, geofencing, spoofing detection, external interrupts, SBAS/D-GPS, and more, all within the SparkFun Arduino Library.

The SparkFun NEO-M9N GPS Breakout also includes an on-board rechargeable battery that powers the RTC on the NEO-M9N. This feature reduces the time-to-first fix from a cold start (approximately 24 seconds) to a hot start (around 2 seconds). The battery can maintain RTC and GNSS orbit data for a substantial period without power.

The SparkFun Qwiic Connect System is an ecosystem of I²C sensors, actuators, shields, and cables that simplifies and accelerates prototyping while reducing errors. All Qwiic-enabled boards use a common 1mm pitch, 4-pin JST connector, which minimizes the required PCB space and ensures correct connections with its polarized design.

The SparkFun NEO-M9N GPS Breakout features an integrated chip antenna, a 92-channel GNSS receiver, 1.5m horizontal accuracy, a max update rate of 25Hz (with 4 concurrent GNSS), and a max altitude of 80,000m. It also supports NMEA, UBX, and RTCM protocols over UART or I2C interfaces. This board offers software configurability for geofencing, odometer, spoofing detection, external interrupt, pin control, low power mode, and many other functions.