Sparkfun SparkPNT GNSS Flex Module - mosaic-G5 P3 & IM19 IMU

Maximize precision while minimizing power and weight with the SparkPNT mosaic-G5 P3 & IM19 IMU GNSS Flex Module. This advanced module pairs Septentrio's compact mosaic-G5 P3 receiver with a high-precision IM19 IMU, creating an ideal solution for autonomous systems, robotics, and portable surveying tools where size, weight, and power constraints are critical. Designed to be easily swappable within the SparkPNT GNSS Flex ecosystem, it connects to your carrier board via standardized 2x10-pin headers, offering USB, dual UARTs, and key timing signals.

The module is perfect for applications demanding high precision and reliability. It provides millimeter-level accuracy with 6mm horizontal and 1cm vertical precision using RTK, making it suitable for exacting surveying tasks. Its precise timing features a PPS timing resolution of 1.4 nanoseconds and event trigger accuracy below 3 nanoseconds, ideal for time-synchronization applications. Equipped with AIM+ technology, it offers best-in-class protection against jamming and spoofing, ensuring reliability in hostile RF environments. The module tracks all signals from major constellations, including GPS, GLONASS, Galileo, BeiDou, and QZSS, simultaneously.

The inclusion of the Feyman IM19 IMU allows for intelligent tilt and dead reckoning capabilities. By combining MEMS sensor data with GNSS RTK positioning, it provides high-precision attitude measurements. This enables advanced features like tilt-compensated surveying, eliminating the need for perfectly vertical survey poles, and robust navigation during brief GNSS outages. With survey-grade accuracy, it delivers roll and pitch measurements accurate to within 0.05 degrees. The sensor fusion ensures continuous navigation even during momentary GNSS signal loss, making it perfect for urban or obstructed environments.

For advanced users, the module offers professional-grade control and configuration. It supports flexible protocols such as NMEA, RTCM v3.x, and the efficient Septentrio Binary Format (SBF). Configure and monitor the module using Septentrio's RxTools suite or a robust Command-Line Interface over USB or Serial. Interfaces include two hardware UARTs, two GPIO pins, two PPS outputs, and two event inputs accessible through the pHAT's headers. By default, the mosaic-G5 UART1 is linked to the IM19's UART2, automatically feeding necessary NMEA data, but this can be reconfigured via onboard jumpers if needed.

To operate, the module requires an external multi-band antenna and a GNSS Flex carrier board, with options for connecting an external GNSS antenna. It features a U.FL connector for an external antenna, and for a sturdier connection, the SparkFun GNSS Flex pHAT includes an SMA connector bridged to a U.FL connector. Users need to jumper the U.FL connectors on both the SparkPNT GNSS Flex module and SparkFun GNSS Flex pHAT with a short U.FL cable.