SparkPNT GNSS Flex Module - LG290P & IM19 IMU

Harness the power of Quectel's advanced GNSS technology with the SparkPNT LG290P & IM19 GNSS Flex Module. This all-in-one module pairs the robust, quad-band LG290P RTK receiver with our proven IM19 IMU, delivering centimeter-level accuracy with full tilt compensation and superior anti-jamming performance.

Like all SparkPNT GNSS Flex Modules, this board is designed to be easily swappable and pin-compatible for future upgrades. It connects to your GNSS Flex pHAT carrier board via standardized 2x10-pin headers, which break out the module’s set of interfaces, including USB, dual UARTs, and I²C* for seamless integration into your Raspberry Pi or similar single-board computer (SBC). 

Multi-Constellation and Quad-Band RTK Precision

At its core is the Quectel LG290P, a high-precision, multi-constellation GNSS receiver. It is engineered for fast convergence times and reliable performance, even in challenging conditions. It simultaneously receives signals from the L1, L2, L5, and L6/E6 bands across all major constellations.

• RTK & PPP Ready: Supports standard RTK and RTCM corrections, SBAS augmentation, and multiple PPP services (including BDS PPP-B2b, QZSS CLAS, and Galileo HAS).

• Advanced Anti-Jamming: A built-in NIC anti-jamming unit provides professional-grade interference detection and mitigation, ensuring signal integrity in complex electromagnetic environments.

• Reliable in Tough Scenarios: Embedded algorithms ensure dependable positioning even in challenging situations, such as dense urban canyons and deep tree cover.

Intelligent Tilt & Dead Reckoning

Paired with the LG290P 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, like tilt-compensated surveying and robust navigation through 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: Offers a continuous navigation solution (Dead Reckoning) even during brief GNSS signal loss, making it ideal for urban or obstructed environments.

Seamless Integration & Connectivity

This GNSS Flex Module has been designed for the LG290P and IM19 to work in symbiosis. By default, the LG290P's navigation data is automatically fed to the IMU. The IM19 then outputs proprietary NMEA messages containing the fully compensated position and attitude (roll, pitch, and yaw). This default link can be easily reconfigured via onboard jumpers to suit your specific project needs.

This product 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 utilized. Users can simply jumper the U.FL connectors between the SparkPNT GNSS Flex Module and the carrier board with a short U.FL cable.

*According to Quectel, support for the I²C interface is still under development and will be made available through a future firmware update.

Features & Specs