SparkFun GPS-RTK2 Board - ZED-F9P (Qwiic)

Professional-Grade, Millimeter-Level GPS Accuracy When standard GPS accuracy of a few meters isn't good enough, you need RTK. Real-Time Kinematics (RTK) technology has mastered high-precision positioning, dialing in accuracy down to the millimeter. The SparkFun GPS-RTK2 is our flagship board for high-precision GNSS, built to make this powerful technology accessible and easy to use. This board is built around the u-blox ZED-F9P module, a top-of-the-line receiver for high-accuracy GNSS and GPS location solutions. This module is capable of an incredible 10mm three-dimensional accuracy. With this board, you will be able to know where your (or any object's) X, Y, and Z location is within roughly the width of your fingernail. Dual Rover and Base Station Capability What truly sets the ZED-F9P apart is its ability to operate as both a rover (receiving correction data) and a base station (broadcasting correction data). The module features a "survey-in" mode, enabling it to easily function as a fixed base station and produce RTCM 3.x correction data, thus providing a complete, professional-grade RTK system. Flexible Connectivity: Qwiic, u.FL, and Breadboard We've designed this board for maximum flexibility, no matter your setup:

* Qwiic Connect System: Utilizing our handy Qwiic system, no soldering is required to integrate it into your projects.

* Breadboard Friendly: We've also broken out 0.1"-spaced pins for traditional breadboard or perfboard prototyping.

* U.FL Connector: Features a compact U.FL connector for a low-profile antenna connection, perfect for space-constrained applications.

A True Communication Hub The GPS-RTK2 is a communication powerhouse. It features five simultaneous communication ports, all active at the same time: USB-C (which enumerates as a COM port), UART1 (3.3V TTL), UART2 (for RTCM reception, 3.3V TTL), I2C (via the two Qwiic connectors or pins), and SPI. Power, Performance, and Fast Fixes An onboard rechargeable backup battery keeps the latest module configuration and satellite data available for up to two weeks. This enables a "warm-start," which dramatically decreases the time-to-first-fix (TTFF). The configuration options are incredible. You can set a variable I2C address, implement geofencing, and even increase the high-precision RTK navigation update rate to 20 Hz. Leave NMEA Behind: Simplified I2C Software We've written an extensive SparkFun Arduino library for u-blox modules to make reading and controlling the GPS-RTK2 over I2C incredibly easy. We highly recommend leaving processor-intensive NMEA parsing behind! Our library focuses on the much lighter-weight binary interface, allowing you to read latitude, longitude, heading, and speed—all over I2C. This frees up your microcontroller's valuable serial port for other tasks. Note: The I2C address of the ZED-F9P is 0x42 and is software configurable. A multiplexer/Mux is required to communicate with multiple ZED-F9P sensors on a single bus. If you need to use more than one ZED-F9P sensor, consider using the Qwiic Mux Breakout.