NEO-M8T GNSS TIMING HAT
GNSS module based on NEO-M8T for Raspberry Pi, single-satellite timing feature
accurate & fast positioning with minor drifting, low power consumption, outstanding ability for anti-spoofing & anti-jamming
This is a Raspberry Pi GNSS HAT based on NEO-M8T with multi-constellation receiver support, as well as precise single-satellite timing feature. It supports concurrent reception of up to 3 GNSS (GPS, Beidou, Galileo, GLONASS) and augment systems like SBAS, QZSS, IMES, and D-GPS. It features accurate & fast positioning with minor drifting, low power consumption, outstanding ability for anti-spoofing & anti-jamming, and so on.
By simply attaching it onto the Pi, it is fairly easy to enable GNSS capability for your Raspberry Pi.
Features at a glance
- Precise timing feature, high availability even with one single satellite
- High dynamic range radios with both analog and digital interference mitigation, supporting applications in wireless communications equipment
- Multi-constellation receiver support, concurrent reception of up to 3 types of GNSS satellite systems from GPS, Beidou, Galileo, and GLONASS, and still retains low power consumption
- Augment systems support, including SBAS, QZSS, IMES, D-GPS, improving the positioning performance of service location
- A-GNSS (Assisted GNSS) support, reducing the first positioning time when powered up, improving the acquisition sensitivity
- Features -167dBm navigating sensitivity and outstanding ability for anti-spoofing & anti-jamming, supports geo-fencing
- Supports U-Center, an easy way to config the module
- Standard Raspberry Pi 40PIN GPIO extension header, supports Raspberry Pi series boards, Jetson Nano
- Breakouts the module's UART and I2C interface, for connecting with host boards like Arduino/STM32
- Baudrate range: 4800~921600bps (9600bps by default)
- Supports DDC (I2C compliant) interface: up to 400KHz (max)
- Onboard battery holder, supports ML1220 rechargeable cell, for preserving ephemeris information and hot starts
- 4x LEDs for indicating the module operating status
- Comes with development resources and manual (examples for Raspberry Pi/Jetson Nano/Arduino/STM32)
Specifications
| GNSS Specifications |
|---|
| NEO-M8T |
GPS & GLONASS |
GPS |
GLONASS |
BeiDou |
Galileo |
| 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 |
| Horizontal positioning accuracy |
Autonomous |
2.5m CEP |
2.5m CEP |
4.0m CEP |
3.0m CEP |
- |
| SBAS |
2.0m CEP |
2.0m CEP |
- |
- |
- |
| Max navigation update rate |
4Hz |
10Hz |
10Hz |
10Hz |
10Hz |
| Time-To-First-Fix |
Cold starts |
25s |
29s |
30s |
34s |
45s |
| Hot starts |
1s |
1s |
1s |
1s |
1s |
| Aided starts |
2s |
2s |
2s |
3s |
7s |
| Sensitivity |
Tracking and navigating |
-167 dBm |
-166 dBm |
-166 dBm |
-159 dBm |
-159 dBm |
| Aided acquisition |
-157 dBm |
-157 dBm |
-151 dBm |
-146 dBm |
-142 dBm |
| Re-acquisition |
-160 dBm |
-160 dBm |
-156 dBm |
-156 dBm |
-153 dBm |
| Cold starts |
-148 dBm |
-148 dBm |
-145 dBm |
-143 dBm |
-138 dBm |
| Hot starts |
-160 dBm |
-160 dBm |
-156 dBm |
-155 dBm |
-151 dBm |
| Velocity accuracy |
0.05 m/s |
0.05 m/s |
0.1 m/s |
0.1 m/s |
0.1 m/s |
| Heading accuracy |
0.3 degree |
0.3 degree |
0.4 degree |
0.5 degree |
0.5 degree |
| PPS accuracy |
Clear sky |
=20ns |
| Indoor |
=500ns |
| Jitter |
±11ns |
| PPS frequency |
0.25Hz…10MHz (configurable) |
| Operational limits |
Acceleration (max): 4g |
| Altitude (max): 50000m |
| Velocity (max): 500m/s |
| Other Specifications |
|---|
| Communication interface |
USB, UART (4800~921600bps, 9600bps by default), I2C (max 400KHz) |
| Update rate |
1Hz (default), 10Hz (max) |
| Protocol |
NMEA 0183 Version 4.0 (V2.3 or V4.1 selectable), UBX, RTCM 2.3 |
| Power supply |
5V |
| Overall current |
<45mA@5V (Continue mode) |
| Module current |
32mA@3V (Continue mode) |
| Operating temperature |
-40? ~ 85? |
| Dimensions |
65mm × 30.5mm |
Standard Raspberry Pi 40PIN GPIO
Compatible with Raspberry Pi series boards, Jetson Nano
single-satellite timing & synchronization
high integrity, precise timing feature, high availability even with one single satellite
Cost effective, high precision, easy implement
Multi-constellation receiver support
concurrent reception of up to 3 types of GNSS satellite systems, and still retains low power consumption
Supports GPS, Beidou, Galileo, and GLONASS
Augment systems support
Augment system is aimed at improving the accuracy, integrity, reliability, and availability of positioning and navigation
Supports augment systems including SBAS, QZSS, IMES, D-GPS
Geo-fencing support
Features -167dBm navigating sensitivity, outstanding ability for anti-spoofing & anti-jamming
software U-Center support
an easy way to config the module
applications
Ideal for fleet management, asset tracking, financial transaction, smart electricity grids, security systems, industrial PDA, GIS app, etc.
What's on board
- NEO-M8T module
- RT9193-33 power chip
- TXS0108EPWR voltage translator
- Status indicators RXD/TXD: UART TX/RX indicator PPS: GPS status indicatorPWR: power indicator
- Battery holder supports ML1220 rechargeable cell, for preserving ephemeris information and hot starts
- Raspberry Pi GPIO header for connecting with Raspberry Pi
- USB port
- UART, I2C interface for connecting with other MCUs
- GNSS antenna connector
Pinout definition
Outline Dimensions
Resources & Services
* Resources for different product may vary, please check the wiki page to confirm the actually provided resources.