Matek GNSS GPS & Compass Module M9N-5883

The Matek M9N-5883 is multi-constellation GPS module with integrated compass (QMC5883L). The GPS is the u-blox NEO-M9N which supporst simultaneous reception of four GNSS (GPS, GLONASS, Galileo, Beidou). It offers exceptional sensitivity and acquisition time for all GNSS L1 signals. Its built-in patch antenna provides the best balance between performance and small size. It offers great RF sensitivity and can improve the dynamic position accuracy even in non-line-of-sight scenarios.

For your UAV systems, Robots, RC, FPV or other projects. This is one of the best performing gps units that work flawlessly with Inav, Betaflight and also ardupilot (3.5.4+) systems.

Stock Update: Patch antenna “Taoglas” has been replaced by “Cirocomm PA025AZ0009”.  Both antennas perform the same.

Wiring and settings

• M9N-5883 5V to Flight controller 4~6V
• M9N-5883 RX to Flight controller UART_TX
• M9N-5883 TX to Flight controller UART_RX
• M9N-5883 CL to Flight controller I2C_SCL
• M9N-5883 DA to Flight controller I2C_SDA
• M9N-5883 G to Flight controller GND
• Compass Alignment(Arrow forward and flat mounting):
• INAV/BetaFLight: CW 270° Flip when flight controller arrow is facing forward also.
• Ardupilot/Mission Planner: Rotation None.
• Protocol: Ublox or NEMA
• Make sure to have compass/magnetometer 10cm away from power lines/ESC/motors/iron-based material
• The scratches on the ceramic antenna are the result of tuning the antenna.
• u-center Windows

Tips and Notes

• Compass Alignment(flat mounting): Tilting the magnetometer is strongly discouraged !
  • INAV/BetaFLight: compass Arrow forward, set CW 270° Flip when flight controller arrow is facing forward.
  • INAV/BetaFLight: compass Arrow backward, set CW 90° Flip when flight controller arrow is facing forward.
  • Ardupilot/Mission Planner: Rotation None.
• Make sure to have compass/magnetometer 10cm away from power lines/ESC/motors/iron based material

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• INAV 5.0.0, Betaflight 4.3.0,  ArduPilot 4.3 or newer is required.
• UBlox NEO-M9N, MAX-M10S, SAM-M10Q series all don’t have dataflash built in.  once GNSS is powered off and the supercapacitor run out. the settings will back to default.
• UBX protocol is bidirectional.  Flight controller firmware can change settings on GPS via UBX protocol. You don’t need to set GNSS module parameters in u-center.
• The default configuration on SAM-M10Q with ublox FW 5.1 is concurrent reception of GPS, Galileo, GLONASS, and BeiDou B1C with QZSS and SBAS enabled.
• Start with u-blox GNSS FW3.01, timepulse is aligned with UTC time and that time is set valid only after leap second is downloaded. That could take up to 12.5 min. Probably PPS LED will not blink immediately after GPS has 3D fixed.
• The M10Q-5883 provides the ability to reset the receiver. Bridging “RST” pad to Ground for at least 100 ms will trigger a cold start. RESET will delete all information and trigger a cold start. It should only be used as a recovery option. If you are sure wiring and setup are all right. but flight controller can’t detect the GNSS module(grey GPS icon), try doing reset.
• The scratches on ceramic antenna are the result of tuning the antenna.

• Troubleshoot GPS related issues: http://www.mateksys.com/?p=5712#tab-id-6
• u-center Windows