sparkfun NEO-M9N - User Manual

SparkFun GPS NEO-M9N Hookup Guide
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Introduction
The SparkFun GPS NEO-M9N is the next iteration of u-blox's GPS offerings! We've developed two flavors of the
board: one with a small chip antenna and another with a u.FL connector so that you can select an antenna of your
choosing.
SparkFun GPS Breakout - NEO-M9N, Chip Antenna
(Qwiic)
 GPS-15733

sparkfun NEO-M9N Specifications

General

GNSS Support	GPS, GLONASS, Galileo, BeiDou
Position Accuracy	2.5m
Operating Temperature	-40°C to 85°C
Velocity Accuracy	0.05 m/s
Type	GPS Module
Chipset	u-blox M9
Category	GPS
Communication Interface	I2C, UART
Sensitivity	-167 dBm
Heading Accuracy	0.3 degrees

Summary

Hardware Overview and Concepts

Power Options

Explains power options including USB-C, Qwiic connectors, and specific 5V/3.3V pins.

Hardware Details

Backup Battery Functionality

Details the backup battery's role in satellite reconnection and its charging mechanism.

Board Features and Connectivity

Jumper Configurations

Explains the function of four jumpers for I2C pull-ups, power LED, PPS LED, and SPI/UART selection.

Antenna Connector Options

Differentiates board versions by built-in antenna or U.FL connector for external antennas.

Communication Interfaces

Qwiic and I2 C Connectivity

SPI Interface Setup

Broken Out Pins and UART

UART Communication Pins

Special Function Pins

Details the function of specific pins like PPS, RST, SAFE, and INT for time signals, resets, and power modes.

Board Specifications

GPS Capabilities

Hardware Assembly and Performance

Assembly and Single Constellation Performance

Software Integration

SparkFun U-Blox Arduino Library

Example Code for NMEA Parsing