Top view


High-performance board-level positioning module with compass and barometric altimeter for robots and unmanned vehicles.

Zubax GNSS 2 is a multipurpose high-performance board-level positioning module interfaced via CAN bus, USB, and UART. It includes a multi-system concurrent GPS + GLONASS + Galileo receiver, a high-precision barometric altimeter, and a 3-axis compass with thermal compensation. Zubax GNSS 2 supports a variety of standard protocols, which ensures compatibility with third party software and hardware: DroneCAN, NMEA 0183 (over USB and UART), and the u-Blox M8 binary protocol.


  • Positioning module for unmanned vehicles (aerial, ground, underwater, etc) and robots.
  • General-purpose embedded positioning module.



  • State-of-the-art concurrent GPS + GLONASS + Galileo receiver u-blox MAX-M8Q.
    • Full RF shielding of the GNSS circuits ensures reliable operation in high-EMI environments.
    • 35 mm high gain patch antenna with large ground plane for reliable reception even in deep urban canyons.
    • Analog front end with LNA and SAW ensures high noise resilience.
    • Supercapacitor-based backup power source enables low time-to-first-fix (a few seconds).
    • Up to 15 Hz solution update rate.
  • High precision digital barometer TE Connectivity MS5611.
    • Altitude resolution 10 cm.
  • High precision 3-axis digital compass STMicroelectronics LIS3MDL with thermal compensation.


  • Doubly redundant CAN bus interface (UAVCAN v0).
    • Continuous self diagnostic and failure detection outputs.
    • Remote reconfiguration.
    • Can be used in non-redundant mode as well (one interface will be inactive).
    • Firmware upgrade.
  • USB (virtual serial port interface).
    • NMEA output for all sensors.
    • Direct access to the u-blox module.
    • Diagnostics and configuration via the command-line interface.
    • Firmware upgrade.
  • UART
    • NMEA output for all sensors.


  • Top notch positioning performance.
  • Extensive, continuous self diagnostics and failure detection make Zubax GNSS a favorable choice for mission-critical applications.
  • Compact size.
  • High quality assurance:
    • Every manufactured unit undergoes a rigorous testing procedure. The testing log for each produced unit is available on the web.
    • Protection against unlicensed (counterfeit) production by means of a digital signature installed on every manufactured unit.

Related announcements and discussions

About the GNSS category
GPS point issue - RaccoonLab GPS MAG BRO V2.3.2 - Cyphal testing with Yukon
Info about weight, size, operating temperature and accuracy
Positioning degradation due to interference to gnss2
Does GNSS 2 support UAVCAN v1
Zubax GNSS v2.4 release announcement
Help getting started with GNSS 2 & Babel?
Configure Zubax GNSS2 with U-blox U-center software
How many km / h speed Zubax GNSS 2 supports ?
GNSS2 Heading Data
GNSS2 highly susceptable to RF noise
Cant communicate with Zubax GNSS2 in PX4 (UAVCAN node RX transfer count is 0)
Node id How to read and set
Pixracer and GNSS GPS...No GPS message in Mission Planner




GNSS 2 is manufactured by an ISO 9001:2015 certified vendor. Contact Zubax Robotics for information about quality and standard compliance.


GNSS 2 is manufactured in the European Union.

Bottom view
Installed on M3 PCB spacers with cables connected