SparkFun GPS-RTK Dead Reckoning Breakout – ZED-F9R (Qwiic)

Meet the SparkFun GPS-RTK Dead Reckoning Breakout – ZED-F9R, your go-to GPS module for precision navigation in tough environments. This cutting-edge GPS receiver fuses sensor data with GNSS signals from GPS, GLONASS, Galileo, and BeiDou, delivering an impressive 0.01-meter accuracy when paired with an RTK correction source. The ZED-F9R combines u-blox’s Automotive Dead Reckoning (ADR) technology with a 3D IMU sensor, wheel tick data, vehicle dynamics models, and GNSS corrections to provide a continuous, reliable positioning solution—even in dense urban landscapes or areas with limited signal access.

The 184-channel u-blox F9 engine enables this module to operate with four GNSS systems at once, keeping you connected and precise in real-time at rates up to 30Hz. Whether you’re navigating tunnels, parking garages, or urban canyons, this module guarantees you won’t get lost.

Perfect for autonomous robotics, the ZED-F9R features a built-in Qwiic connector, meaning no soldering is required to hook it up to your system. However, the board also includes 0.1″-spaced pins for breadboard compatibility, offering ultimate flexibility. Want even more control? The module is fully configurable using u-center software or SparkFun’s Arduino library, allowing you to tweak baud rates, update rates, geofencing, spoof detection, and more.

A cold start takes ~24 seconds, but thanks to the onboard rechargeable battery, you can enjoy hot starts in just ~2 seconds. The SparkFun ZED-F9R is a top-tier choice for anyone who demands precision and performance.

Key Features:

• Concurrent reception of GPS, GLONASS, Galileo, and BeiDou
• 184-channel u-blox F9 GNSS receiver
• Dual-band support: L1C/A and L2C
• 0.01m accuracy with RTK correction
• 30Hz real-time positioning rate
• Built-in accelerometer and gyroscope for dead reckoning
• Time to First Fix: Cold (24s), Hot (2s)
• Max velocity: 500m/s (1,118mph)
• Geofencing, odometer, spoofing detection, and more configurable options via u-center or Arduino
• Supports NMEA, UBX, and RTCM protocols over UART or I2C

Specifications:

• Max Altitude: 80km (49.7 miles)
• Max G-force: ≤4G
• Heading Accuracy: 0.2 degrees
• Voltage: 5V or 3.3V (logic level 3.3V)
• Current: 85mA to 130mA
• Dimensions: 43.18mm x 50.8mm (1.7in x 2.0in)
• Weight: 11.05g

In the Box:

• SparkFun GPS-RTK Dead Reckoning Breakout – ZED-F9R
• 2x Qwiic Connectors
• u.FL antenna connector (antenna sold separately)

Note: Accessories may vary based on supply availability. Be sure to check compatible antennas and cables to complete your setup.

Resources

• Schematic (v12)
• Eagle Files (v12)
• Board Dimensions
• Hookup Guide
• ZED-F9R Datasheet
• Product Summary
• Integration Manual
• u-blox Interface Description
• u-blox ECCN
• Arduino Library
• GitHub Hardware Repo