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

Zubax GNSS 2 is a multipurpose high-performance 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: UAVCAN (over CAN bus), 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).
    • 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

Zubax mounting holes

Cannot find in all the Zubax Gnss 2 docs the mounting holes distance . Is it 44 or 45 mm ?…

GPS settings for GNSS 2

I am not seeing any significant GPS satellite coverage with the GNSS 2 over my old 3DR LEA-6H module. GPS is properly set with GPS_TYPE to 9 and I am getting a GPS fix. GPS_AUTO_CONFIG is enabled with 1 for automatic configuration. Have also tried setting GPS_GNSS_MODE to 67 and 71. External compass…

Enabling barometer

Please provide specific instructions on how to enable the barometer in GNSS 2. I understand that the configuration parameter “uavcan.pubp-pres” is recommended to be set to 50,000. I also understand that there is a command-line interface somewhere that allows listing, editing and saving parameters…

ZUBAX GNSS 2 pressure and temperature

Just received my ZUBAX GNSS 2 module recently. Here is the results of a quick test of pressure and temperature readings from Zubax vs BMP280 sensor ( Two modules were set up side by side in a room and run simultaneously for several hours. Data is collected a…

Pixhawk Compasses inconsistent

ook like orientation problem how do enter settings with usb? and what softwar…

Gnss 2 to pixhawk Pinout

Does any one have the pinout of the gnss2 to pixhawk and pixhawk2 ?…

Galileo support in Zubax GNSS 2

The European global navigation system - Galileo - has become operational in 2016. Currently, there already are 15 operational satellites in orbit, which means that it is time to upgrade Zubax GNSS 2 with the capability to utilize Galileo signals alongside GPS and GLONASS. The new firmware version 4…

Zubax 2 CAN connector

I broke all the CAN cables provided with Zubax 2 . What is the type and brand of Zubax 2 CAN connectors ? I would like to build my own cables. Thanks Luca…

Help with CLI in OSX

I’m trying to use the CLI under OSX with my GNSS 2, and am not seeing a virtual serial device that looks like the GNSS. I’ll admit a lack of general knowledge about what I’m doing, so this is probably a very very basic issue. At the end of the day, I’d like to just use the GNSS 2 as a NMEA data sou…

GNSS 2.2 Module issues

Hi All, We’ve received 2 GNSS 2.2 modules this week and I’ve been trying them out - unfortunately I’ve had some problems. The first module is powering up and communicating OK on USB, however I can’t seem to get a GNSS fix. The second module doesn’t want to power up at all, although it does seem to …