The SparkFun Quadband GNSS RTK Breakout - LG290P (Qwiic) offers a powerful upgrade with the Quectel LG290P GNSS module, providing exceptional positioning accuracy. The board's dimensions, pin layout, and connectors are exactly the same as the popular SparkFun GPS-RTK-SMA Breakout - ZED-F9P (Qwiic), featuring the same compact design and convenient Qwiic connector. Connect with ease using a variety of interfaces, including UART, SPI*, and I2C*.

The LG290P module is a quad-band, multi-constellation, high-precision, RTK GNSS receiver. The module is capable of simultaneously receiving signals from the L1, L2, L5, and L6/E6 frequency bands of the GPS, GLONASS, Galileo, BDS, QZSS, and NavIC GNSS constellations. In addition, the module supports SBAS augmentation systems (WASS, EGNOS, BDSBAS, MSAS, GAGAN, and SDCM), PPP services* (BDS PPP-B2b, QZSS CLAS, MADOCA-PPP, and Galileo HAS), RTCM, and RTK corrections for precision navigation with a fast convergence time and reliable performance.

The built-in NIC anti-jamming unit provides professional-grade interference signal detection and elimination algorithms, effectively mitigating multiple narrow-band interference sources and significantly improving signal reception performance in complex electromagnetic environments. Additionally, the embedded algorithms ensure reliable positioning in complex scenarios such as urban environments and deep tree cover.

With its high-precision and low power consumption performance advantages, this board is ideal for high-precision navigation applications, such as intelligent robots, UAVs, precision agriculture, mining, surveying, and autonomous navigation.

SparkFun Quadband GNSS RTK Breakout - LG290P Features

• Quectel LG290P quad-band, GNSS module
  • Concurrent signal reception: 5 + QZSS
    • L1, L2, L5, E6 frequency bands
  • GNSS Constellations:
    • GPS (USA)
    • GLONASS (Russia)
    • Galileo (EU)
    • BDS (China)
    • QZSS (Japan)
    • NavIC (India)
  • SBAS Systems:
    • WASS (USA)
    • SDCM (Russia)
    • EGNOS (EU)
    • BDSBAS (China)
    • MSAS (Japan)
    • GAGAN (India)
  • Built-in NIC anti-jamming unit
• Breakout board:
  • Dimensions: 1.70" x 1.70" (43.2mm x 43.2mm)
  • Four mounting holes:
    • 4-40 screw compatible
• Connections:
  • 24 PTH Pins
  • 4-pin JST Qwiic connector* (x2)
  • UART interfaces (x3)
    • USB-C connector
    • 6 PTH pins (BlueSMiRF/Serial-to-UART)
    • 4-pin locking JST connector
• LEDs:
  • PWR - Red 3.3V power indicator
  • PPS - Yellow Pulse-Per-Second indicator
  • RTK - White RTK correction indicator
• Backup battery

LG290P General Features

• High-precision GNSS module
• Electrical Characteristics:
  • Supply Voltage: 3.15–3.45V
  • Current Consumption:
    • Normal Operation:
      • 91mA (300.3mW) (Acquisition)
      • 91mA (300.3mW) (Tracking)
    • Power Saving Mode:
      • 12μA (39.6mW) (Backup Mode)
• GNSS Frequency bands:
  • GPS: L1 C/A, L1C*, L5, L2C
  • GLONASS: L1, L2
  • Galileo: E1, E5a, E5b, E6
  • BDS: B1I, B1C, B2a, B2b, B2I, B3I
  • QZSS: L1 C/A, L1C*, L5, L2C
  • NavIC: L5
  • SBAS: L1 C/A
  • L-band PPP*:
    • PPP: B2b
    • QZSS: L6
    • Galileo HAS: E6
• Tracking Channels: 1040
• Horizontal Position Accuracy:
  • Autonomous: 0.7m
  • RTK: 0.8cm + 1ppm
• Vertical Accuracy:
  • Autonomous: 2.5m
  • RTK: 1.5cm + 1ppm
• Velocity Accuracy Without Aid: 0.03m/s
• Accuracy of 1PPS Signal: 5ns (RMS)
• RTK Convergence Time: 5s
• Time to First Fix (without AGNSS):
  • Cold Start: 28s
  • Warm Start: 28s
  • Hot Start: 1.7s
• Sensitivity:
  • Acquisition: -146dBm
  • Tracking: -160dBm
  • Reacquisition: -155dBm
• Dynamic Performance:
  • Maximum Altitude: 10000m
  • Maximum Velocity: 490m/s
  • Maximum Acceleration: 4g
• Update Rate:
  • Default: 10Hz
  • Max: 20Hz
• Antenna Interface:
  • External active antenna
  • Power Supply: External or Internal
• Interfaces
  • UART (x3)
    • Baud Rate: 9600–3000000bps
    • Default: 460800bps
    • Protocol: NMEA 0183/RTCM 3.x
  • SPI* (x1)
  • I2C* (x1)
• Operating temperature: -40°C to +85°C
• Footprint: 12.2mm × 16mm × 2.6mm
• Weight: ~0.9g

• Design Files
  • Schematic
  • KiCad Files
  • Board Dimensions
  • STEP File
• Hookup Guide
  • CH342 USB Driver (manufacturer website)
    • Windows
    • MacOS
  • QGNSS Software (v2.0)
• Component Documentation
  • Product Brochure
  • RTK Application Note
  • Protocol Specification
  • Hardware Design
  • Firmware Upgrade Guide
• Qwiic Info Page
• GitHub Hardware Repo