SparkPNT GNSS Flex Module - mosaic-X5 & IM19 IMU

Achieve the absolute pinnacle of positioning performance with the SparkPNT mosaic-X5 & IM19 IMU GNSS Flex Module. This is one of our most advanced modules, combining the industrial-grade, millimetre-level Septentrio mosaic-X5 RTK receiver with the high-precision IM19 IMU for full tilt compensation and dead reckoning. It's the ultimate solution for professional surveying, industrial robotics, and critical autonomous systems.

As part of the SparkPNT Flex ecosystem, this module is designed to be easily swappable for repairs or future upgrades. It connects to your carrier board via standardized 2x10-pin headers, breaking out a rich set of interfaces including quad UARTs, USB, and an SD card interface.

Survey-Grade RTK Precision

At the heart of this Flex Module is the Septentrio mosaic-X5, a multi-band, multi-constellation receiver known for its best-in-class reliability and performance.

• Millimetre-Level Accuracy: Delivers an impressive 6mm horizontal and 1cm vertical accuracy with RTK, plus timing precision down to five nanoseconds.
• AIM+ Interference Mitigation: Features Septentrio's unique AIM+ technology, a powerful anti-jamming and anti-spoofing system that ensures unparalleled robustness and reliability in noisy RF environments.
• Multi-Band & Multi-Constellation: Tracks all signals from all major constellations (GPS, GLONASS, Galileo, BeiDou, NavIC) for maximum satellite availability and fast, reliable fixes.

Intelligent Tilt & Dead Reckoning

Paired with the mosaic-X5 is the Feyman (FMI) IM19 IMU, which combines MEMS sensor data with the GNSS RTK positioning data to provide high-precision attitude measurements. This enables advanced features, such as tilt-compensated surveying and robust navigation during brief GNSS outages.

• Survey-Grade Accuracy: Delivers roll and pitch measurements accurate to within 0.05 degrees.
• Tilt Compensation: No more perfectly vertical survey poles! The IM19 can calculate a virtual digital level point at any tilt angle, revolutionizing field data collection.
• Sensor Fusion: Provides a continuous navigation solution (dead reckoning) even during momentary GNSS signal loss, perfect for urban or obstructed environments.

Intuitive Control & Seamless Integration

This Flex Module is engineered to provide both a sophisticated user experience and a tightly integrated navigation solution, setting it apart from typical receivers.

• Browser-Based Interface: Access the mosaic-X5's powerful, built-in web server from any browser via the USB interface for intuitive setup, monitoring, and data logging.
• Command-Line Interface: For power users and automated testing, a full Command-Line Interface (CLI) is also available for deep configuration and control.
• Pre-Configured for Fusion: By default, the mosaic-X5's COM4 is linked to the IM19's UART2, automatically feeding it the necessary NMEA data. The IMU then outputs a fully compensated position and attitude. This link can be easily reconfigured via onboard jumpers to suit your specific project needs.

This module requires an external antenna and a GNSS Flex carrier board. Users should have two options for connecting an external GNSS antenna to their GNSS receiver.

• The GNSS Flex Module has a U.FL connector for an external antenna.
• For a sturdier connection, an SMA connector on a GNSS Flex pHAT carrier board can be utilised. Users can simply jumper the U.FL connectors between the SparkPNT GNSS Flex Module and the carrier board with a short U.FL cable.

• Schematic
• KiCad Files
• Board Dimensions
• STEP File
• Hookup Guide
  • Software: RxTools
  • Correction Service: Agnostic Corrections
• Component Datasheets:
  • mosaic-X5 Datasheet
    • mosaic-X5 Brochure
    • Firmware Manual (v4.15.0)
  • Septentrio's GNSS Modules
  • mosaic-X5 Product Page
• Building a GNSS System
• GitHub Hardware Repo