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The Waveshare L76K GPS HAT is a multi-GNSS module for Raspberry Pi that supports GPS, BeiDou, GLONASS and QZSS with AGNSS, a built-in LNA, a SAW filter and a UART interface. It also works with Jetson and RDK boards. It is built on the AT6558R chip platform.
It has an L1-band receiver with 32 tracking and 72 acquisition channels, and hot starts of just 2 seconds.
Acquisition sensitivity is -148 dBm, re-acquisition is -160 dBm and tracking is -162 dBm. Cold start time is 30 seconds, or 5.5 seconds with AGNSS. Position accuracy is 2.0 m CEP, speed accuracy is 0.1 m/s and timing accuracy is 30 ns. The UART runs at 4800 to 115200 bps (9600 default) and the update rate is 1 Hz by default with a 5 Hz maximum.
The HAT is powered from 5 V, draws under 55 mA in continuous mode and works from -40 to 85 C. It measures 65 x 30.5 mm. In the box are the HAT, a GPS antenna, a 2x20 pin header, a USB Type-A to Micro-B cable and a pack of screws.
Raspberry Pi and Jetson users who want to add location or precise time to a project, such as a data logger, clock or tracker.
Enable the serial port and disable the login shell on it, attach the HAT to the 40-pin header and connect the antenna. You can then read NMEA data from the UART or connect the USB cable and use the module from a computer. Tools such as gpsd make it easy to see the position and satellite count.
Raspberry Pi, Jetson and RDK boards.
GPS, BeiDou, GLONASS and QZSS.
About 2.0 m CEP.
From 5 V.
The HAT, an antenna, a 2x20 header, a USB cable and screws.
| Brand | Waveshare |
|---|---|
| Accuracy | 2.0m CEP |
| Baud Rate | 4800-115200 (9600 default) |
| Chipset | AT6558R |
| Cold Start Time | 30s (5.5s with AGNSS) |
| Dimensions | 65 x 30.5 mm |
| GNSS Constellations | GPS, GLONASS, BDS, QZSS |
| Hot Start Time | 2s |
| Interface Type | UART |
| Operating Voltage | 5V |
| Update Rate | 5.000000 Hz |
| Selling unit | PCS |
