The SparkFun GNSS-RTK L1/L5 Breakout - NEO-F9P (Qwiic) is a high-precision GNSS board designed for impressive accuracy and robust configuration options. Utilizing the L1/L5 bands, it delivers enhanced performance in urban environments due to the L5 signals falling within the protected ARNS frequency band, reducing RF interference.The NEO-F9P module, featuring a powerful 184-channel u-blox F9 engine, can receive signals from GPS, GLONASS, Galileo, and BeiDou constellations with an astonishing 10mm three-dimensional accuracy. This level of precision is achievable with an RTK navigation solution and a correction source, allowing you to pinpoint locations within the width of a fingernail. The module supports concurrent reception of four GNSS systems and includes a survey-in mode to function as a base station, producing RTCM 3.x correction data.A rechargeable backup battery is included to maintain the latest module configuration and satellite data for up to two weeks, significantly reducing the time-to-first-fix from a cold start of ~27 seconds to a hot start of ~3 seconds. An SMA connector ensures a secure connection.The NEO-F9P offers five communication ports that are active simultaneously: USB-C, UART1 (3.3V TTL), UART2 for RTCM reception (3.3V TTL), I2C, and SPI. The Qwiic system simplifies integration without soldering, though 2.54mm-spaced pins are available for breadboard use.Configurable via the u-center Windows program, the NEO-F9P can adjust various functions like baud rates, update rates, geofencing, spoofing detection, and more. The SparkFun Arduino Library facilitates easy reading and control of the GNSS-RTK over the Qwiic Connect System, offering a lightweight binary interface for efficient microcontroller communication.This product requires an antenna: Be sure to check out the related products/hookup accessories and pick a suitable GNSS antenna for your project.The SparkFun Qwiic Connect System is an ecosystem of I2C sensors, actuators, shields, and cables that streamline prototyping. All Qwiic-enabled boards use a common 1mm pitch, 4-pin JST connector, saving PCB space and ensuring correct connections.Get Started With the SparkFun Qwiic GNSS-RTK L1/L5 Breakout - NEO-F9P GuideFeatures: * 1x USB Type C Connector * 2x Qwiic Connectors * Default I2C Address: 0x42 * Integrated SMA connector * Concurrent reception of GPS, GLONASS, Galileo, and BeiDou * 184-Channel GNSS Receiver * Receives L1/L5 Bands * Voltage: 5V or 3.3V (all logic is 3.3V) * Current: 95mA - 135mA (varies with constellations and tracking state) * Time to First Fix: 27s (cold), 3s (hot) * Max Navigation Rate: * RTK (basic location over UBX binary protocol) - 25Hz * PVT - 25Hz * RAW - 25Hz * Horizontal Position Accuracy: * 1.5m without RTK * 0.01m with RTK * Vertical Position Accuracy: * 2.0m without RTK * 0.01m with RTK * Time Pulse Accuracy: 30ns * Operational Limits * Max G: ≤4G * Max Altitude: 80km * Max Velocity: 500m/s * Software Configurable * Geofencing * Odometer * Spoofing Detection * External Interrupt * Pin Control * Low Power Mode * Many others! * Supports NMEA, UBX, RTCM, SPARTN, CLAS protocols over UART or I2C interfaces * Power LED * Jumpers * USB Shield * Power LED * 3v3 (for UART2 Port) * I2C Pull-Up Resistors * SPI * Pulse Per Second (PPS) * RTK Status LED * Board Dimensions * 43.2mm x 43.2mm Documents:SparkFun Resources * Schematic * Eagle Files * Board Dimensions * Hookup Guide * Qwiic Info Page * Building a GPS System * RTK Solutions * Arduino Library * GitHub Hardware Repo u-blox NEO-F9P Resources * Product Summary * Datasheet * Integration Manual * GPS L5 Application Note * UBX and NMEA Protocol Manual * Release Notes - FW1.00 * White Paper: Modern GNSS/GPS signals: Moving from Single-Band to Dual-Band * u-blox ECCN https://elecena.pl/product/27751451/sparkfun-gnss-rtk-l1-l5-breakout-neo-f9p-qwiic 2025-01-24 https://elecena.pl/product/27751451/sparkfun-gnss-rtk-l1-l5-breakout-neo-f9p-qwiic 2025-09-28 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