The ArduSimple simpleRTK2B Pro GPS Module from ArduSimple is a professional evaluation board for centimeter-level dual-frequency RTK GNSS technology. The module is built around the high-performance u-blox ZED-F9P receiver and can operate autonomously or in conjunction with popular platforms: Arduino, Ardupilot/Pixhawk (JST connector), Raspberry Pi, Nvidia Jetson, and STM32 Nucleo as a shield. The device can provide up to 10 RTK positions per second, making it ideal for precise positioning tasks in robotics, drones, and surveying.

Key Features

• Dual-frequency support: L1 and L2.
• High positioning accuracy: centimeter-level in RTK mode with a base station or via NTRIP up to 35 km.
• Autonomous accuracy: less than 1.2 m in standard mode.
• Update rate: up to 10 Hz (10 RTK positions/sec).
• Operating modes: can function as both Base and Rover.
• Improvements over the Budget version: high-power XBee connector, switching between UART1/UART2 for UBX protocol transmission over radio, compatibility with Sparkfun qwiic and I2C interface, dual USB-C connector, and status LEDs ("NO RTK" — red, "GPS FIX" — green).
• EXTINT and Timepulse available on the JST connector for integration with the Pixhawk platform.

Interfaces and Extensions

• 2 x USB-C for power and configuration.
• UART with line switching capability.
• Pixhawk connector (JST) with EXTINT and Timepulse signals.
• XBee connector for connecting plugins and accessories such as:
• MR/LR/XLR radio
• Bluetooth
• WiFi
• Ethernet
• Dataloggers
• RS232
• Canbus
• L-Band
• 4G/3G/2G modems
• Compatibility with Sparkfun qwiic and I2C interface for easy connection of sensors and peripherals.

Supported Satellite Systems and Frequencies

• GPS: L1C/A, L2C.
• GLONASS: L1OF, L2OF.
• Galileo: E1B/C, E5b.
• BeiDou: B1I, B2I.
• QZSS: L1C/A, L2C.
• SBAS: L1C/A.

Protocols

• NMEA 0183
• UBX (proprietary u-blox protocol)
• RTCM

Operating Modes and Functionality

• Base or Rover: full support for modes to set up your own RTK network.
• Support for raw GNSS measurements for professional processing and algorithms.
• Update rate: up to 10 Hz.
• Positioning accuracy:
  • RTK mode: centimeter-level with base or NTRIP support.
  • Autonomous mode: approximately less than 1.2 m.

Additional Information and Recommendations

• Antenna not included: a multi-frequency GNSS antenna is required for proper operation — the module will not show high performance with a standard single-frequency antenna.
• Recommended for developers and engineers integrating RTK into their own products.
• Extended functionality: the high-power XBee connector supports accessories with high output power (XLR radio, 4G NTRIP Master) and allows connecting two plugins simultaneously using a shield for the second connector.
• Compatibility with Ardusimple plastic enclosure and optional backup battery for faster re-fix after a short power loss (note: the battery does not speed up the first RTK fix after a cold start).

Technical Specifications

• Supply voltage range: 4.5 V – 5.5 V.
• Current consumption: typically 200 mA @ 5 V.
• Dimensions: Arduino UNO compatible (69×53 mm).
• Timepulse output and Event input available on the JST connector.
• Operating temperature range: -40°C to +85°C.
• Antenna connector: SMA RF.
• Weight: 24 g.
• Mounting: 3 mounting holes for easy attachment.

Documentation

• User manual for setup and integration.
• Specifications with a list of parameters and requirements.
• 3D model for designing mounts and enclosures.

Who it's for

The simpleRTK2B Pro is a powerful solution for developers, engineers, and integrators who require high-precision dual-frequency GNSS positioning with the ability to expand functionality using XBee plugins and compatible interfaces. The module is ideal for applications in drones, surveying, agricultural technology, and other projects where positioning accuracy is critical.

Technical details, platform compatibility, available interfaces, and recommendations for antennas and additional accessories are provided above — this allows for quick integration of the module into your project and obtaining a stable RTK fix.

Product category information: Drones and Quadcopters > Drone Accessories.

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