SparkFun GPS-26620 LG290P Quad-Band GNSS RTK Qwiic Breakout

The SparkFun GPS-26620 is a quad-band GNSS RTK breakout built around the Quectel LG290P module. It suits drones, robotics and survey systems that need high-precision positioning when fed an RTK correction stream over its serial link.

Key features

• Tracks GPS, GLONASS, Galileo, BDS, QZSS and NavIC across the L1, L2, L5 and E6 bands for robust multi-constellation fixes.
• RTK-fed horizontal accuracy of 0.8cm + 1ppm, against 0.7m for autonomous fixes without corrections.
• Update rate up to 20Hz, with a 5-second RTK convergence time once corrections are streaming.
• Board measures 43.2 x 43.2mm with two Qwiic connectors, three UART interfaces and a USB-C port for wiring flexibility.
• Onboard backup battery and PWR/PPS/RTK status LEDs support standalone testing and fix monitoring during setup.

Specifications

• GNSS module: Quectel LG290P
• Bands: L1, L2, L5, E6
• RTK horizontal accuracy: 0.8 cm + 1 ppm
• Update rate: up to 20 Hz
• Supply voltage: 3.15-3.45 V
• Antenna: external active antenna required (not included)
• Operating temperature: -40 to +85 C
• Board size: 43.2 x 43.2 mm
• Interfaces: Qwiic (I2C), 3x UART, USB-C

Feed it RTCM corrections over its UART link for centimetre-level positioning in precision navigation and mapping projects.