NEO-M8T GNSS TIMING HAT - GNSS module with NEO-M8T for Raspberry Pi

Description

GNSS receiver expansion module dedicated to Raspberry Pi minicomputers. It features an extremely precise timing function and the ability to work with a single satellite. It provides simultaneous reception of up to three types of satellite systems, including GNSS with GPS, Beidou, Galileo and GLONASS. The module also has support for supporting systems such as SBAS, QZSS, IMES, D-GPS and A-GNSS (Assisted GNSS).

The receiver features a high sensitivity of -167dBm. It features a high dynamic range radio circuit with analog and digital noise reduction. It uses a 72-channel u-blox M8 engine that supports GPS L1C/A, SBAS L1C/A, QZSS L1C/A, QZSS L1 SAIF, GLONASS L1OF, BeiDou B1, Galileo E1B/C frequency bands. It allows positioning with an accuracy of 2.5m for GPS and GLONASS, 3m for Beidou, and 2.5m for GPS. It also allows measurement of movement speed and direction.

The module has a Raspberry Pi 40-pin GPIO connector, and a UART and I2C interface that is derived, allowing connection to boards such as Arduino and STM32. It communicates at speeds from 4800 to 921600bps (9600bps by default) and has support for DDC (I2C-compatible) with a maximum frequency of 400KHz. On the bottom of the board is an ML1220 battery slot for faster measurement startup after power loss. The module is configured using the U-Center application. Full documentation and configuration examples are available on the product page.

Features

• Precision timing function, ability to work with up to one satellite
• High dynamic range radio circuit with analog and digital interference cancellation
• Simultaneous reception of up to 3 types of GNSS satellite systems from GPS, Beidou, Galileo and GLONASS
• Support for supporting systems including SBAS, QZSS, IMES, D-GPS
• A-GNSS (Assisted GNSS)
• Sensitivity: -167dBm
• Configuration via U-Center application
• Raspberry Pi 40-pin GPIO connector (compatible with Raspberry Pi, Jetson Nano)
• UART and I2C interface of the module out (can be connected to boards such as Arduino/STM32)
• Baudrate range: 4800 to 921600bps (default is 9600bps)
• Support for DDC (I2C compatible) interface: up to 400KHz (max)
• Built-in battery slot for ML1220 batteries
• 4x LEDs to indicate module operation status
• Frequency band:  72-channel u-blox M8 engine, GPS L1C/A, SBAS L1C/A, QZSS L1C/A, QZSS L1 SAIF, GLONASS L1OF, BeiDou B1, Galileo E1B/C
• Positioning accuracy:
  • GPS & GLONASS: 2,5 m
  • GPS: 2.5 m
  • GLONASS: 4 m
  • BeiDou: 3 m
• Takeoff time: 25 s (cold), 1 s (hot)
• Speed measurement accuracy: 0.05 m/s (GPS), 0.1 m/s (GLONASS, BeiDou, Galileo)
• Accuracy of direction measurement: 0.3° (GPS), 0.4° (GLONASS), 0.4° (BeiDou, Galileo)
• PPS accuracy: ≤20ns (open space), ≤500ns (indoor)
• Maximum acceleration: 4g
• Maximum altitude: 50000m
• Maximum velocity: 500 m/s
• Update frequency: 1Hz (default), 10Hz (max)
• Protocol: NMEA 0183 version 4.0 (V2.3 or V4.1 selectable), UBX, RTCM 2.3
• Power supply: 5V
• Current consumption: <45mA@5V
• Module current: 32mA@3V
• Operating temperature -40℃ to 85℃
• Dimensions: 65 x 30.5mm

Kit contains

• NEO-M8T GNSS TIMING HAT
• GPS external antenna (B)
• USB-A to Micro-B cable
• RPi screw set (2pcs)
• 2x20PIN female connector