GPS-RTK2 Board – ZED-F9P (Qwiic) (GPS-15136) SparkFun

DESCRIPTION

With GPS you are able to know where you are, where you’re going, and how to get there anywhere on Earth within 30 seconds. This means the higher the accuracy the better! GPS Real Time Kinematics (RTK) has mastered dialling in the accuracy on their GPS modules to just millimetres!

The SparkFun GPS-RTK2 raises the bar for high-precision GPS and is the latest in a line of powerful RTK boards featuring the ZED-F9P module from u-blox. The ZED-F9P is a top-of-the-line module for high accuracy GNSS and GPS location solutions including RTK that is capable of 10mm, three-dimensional accuracy. With this board, you will be able to know where your (or any object’s) X, Y, and Z location is within roughly the width of your fingernail! The ZED-F9P is unique in that it is capable of both rover and base station operations. Utilising the handy Qwiic system, no soldering is required to connect it to the rest of your system. However, there are still 0.1″-spaced pins broken out in case you prefer to use a breadboard.

There’s even included a rechargeable backup battery to keep the latest module configuration and satellite data available for up to two weeks. This battery helps ‘warm-start’ the module decreasing the time-to-first-fix dramatically. This module features a survey-in mode allowing the module to become a base station and produce RTCM 3.X correction data.

The number of configuration options of the ZED-F9P is incredible! Geofencing, variable I²C address, variable update rates, and even the high precision RTK solution can be increased to 20Hz. The GPS-RTK2 even has five communications ports which are all active simultaneously: USB-C (which enumerates as a COM port), UART1 (with 3.3V TTL), UART2 for RTCM reception (with 3.3V TTL), I²C (via the two Qwiic connectors or broken out pins), and SPI.

An extensive Arduino library for u-blox modules has been created to make reading and controlling the GPS-RTK2 over the Qwiic Connect System easy. Leave NMEA behind! Start using a much lighter weight binary interface and give your microcontroller (and its one serial port) a break. The SparkFun Arduino library shows how to read latitude, longitude, even heading and speed over I²C without the need for constant serial polling.

FEATURES

• Concurrent reception of GPS, GLONASS, Galileo and BeiDou
• Receives both L1C/A and L2C bands
• Voltage: 5V or 3.3V but all logic is 3.3V
• Current: ~35mA (varies with constellations and tracking state)
• Time to First Fix: 25s (cold), 2s (hot)
• Max Navigation Rate:
  • PVT (basic location over UBX binary protocol) – 25Hz
  • RTK – 20Hz
  • Raw – 25Hz
• Horizontal Position Accuracy:
  • 2.5m without RTK
  • 0.010m with RTK
• Max Altitude: 50km (31 miles)
• Max Velocity: 500m/s (1118mph)
• Weight: 6.8g
• Dimensions: 43.5mm x 43.2mm (1.71in x 1.7in)
• 2x Qwiic Connectors

RESOURCES

• Schematic
• Eagle Files
• Hookup Guide
• Datasheet (ZED-F9P)
• UBX and NMEA Protocol Manual (ZED-F9P)
• Integration Manual (ZED-F9P)
• Product Summary (ZED-F9P)
• Release Notes – FW1.00 (ZED-F9P)
• Example RTCM Output
• U-blox ECCN
• Arduino Library
• GitHub