Documents
Manual:Click here to open
Software:Click here to open
Code:Click here to open
Datasheet:Click here to open
Schematic:Click here to open
Introduction
This product is a Raspberry Pi expansion board with GNSS (Global Navigation Satellite System) function, supports GPS, BD2 and QZSS positioning systems, and has the advantages of small size, low power consumption, and fast positioning. Take me, your Raspberry Pi will be able to easily achieve global positioning
The program provides a calibration algorithm that supports Baidu Maps with high accuracy.
Parameters
Receiving channels:33 tracking channels, 99 acquisition channels and 210 PRN channels
Receiving signal:GPS, BD2 and QZSS
Support SBAS:WAAS, EGNOS, MSAS, GAGAN
Signal frequency band:GPS L1 (1575.42Mhz) BD2 B1 (1561.098MHz) C/A Code
Capture time:Cold start:10S (fastest); Hot start:1S
Capture sensitivity:-148dBm
Tracking sensitivity:-163dBm
Recapture capture sensitivity:-160dBm
Positioning accuracy
The highest altitude:18000(M)
Maximum speed:515m/s
Logic voltage:3.3/5V
Communication interface:UART
Serial communication baud rate:4800~115200 (default 9600)
Update rate:Maximum 10Hz (default 1HZ)
Communication protocol:NMEA 0183 /PMTK
Working voltage:2.7V~5V (input power from 5V pin)
Working current:13mA
Working temperature -40→ ~ 85→
Product size:65X30.5(mm)
GNSS parameters
Signal frequency band:GPS L1 (1575.42Mhz), BD2 B1 (1561.098MHz)
Number of channels:33 tracking channels, 99 acquisition channels and 210 PRN channels
C/A code
SBA:WAAS, EGNOS, MSAS, GAGAN
Horizontal positioning accuracy
Autonomous positioning
First positioning time @ -130dBm (EASY function enabled)
Cold start
Warm start
Hot start
Sensitivity
Capture:-148dBm
Tracking:-163dBm
Recapture:-160dBm
Dynamic performance
Altitude (max):18000m
Speed (max):515m/s
Acceleration (max):4G
Package includes
1 x L76X GPS HAT
1 x GPS External Antenna (B)
1 x USB cable type A male port to micro male port
1 x RPi copper pillar package (2PCS set)
1 x 2*20PIN long row seat
Device introduction
1. L76B module
2. CP2102, USB to UART chip
3. CAT24C32, EEPROM memory chip
4. RT9193-33, power chip
5. Backup mode wake-up button
6. Standby mode switch
7. Status indicator; RXD/TXD:serial port transceiver indicator; PPS:GPS status indicator; PWR:power indicator
Interface introduction
8. Raspberry Pi GPIO interface for easy access to Raspberry Pi
9. USB TO UART interface
10. GNSS antenna interface
11. ML1220 battery holder, can be connected to ML1220 rechargeable battery, used to save data and hot start
Jumper description
12. UART selection jumper cap
A:USB to serial port control L76B
B:Raspberry Pi controls L76B
C:USB to serial port to access Raspberry Pi
Standby mode:Use the STANDBY switch to make the module enter the standby mode, which is a low power consumption mode. In standby mode, the module stops satellite search and navigation, no positioning information (NMEA message) is output, but it can be accessed through PMTK commands or any other data.
Backup mode:Press FORCE ON to exit the backup mode. Compared with standby mode, the power consumption in backup mode is lower. In the backup mode, the module will stop acquiring and tracking satellites. UART1 is not accessible. However, the backup memory in the RTC domain (including all GPS information and a few user configuration variables required for quick start) is obtained. Support EASYTM self-generated orbit prediction function, which can realize fast positioning. In this mode, the current of the module is about 7uA. In backup mode, the only way to wake up is to pull the FORCE_ON pin high
CAT24C32:The function of this chip is to provide an ID EEPROM for the Raspberry Pi (including vendor information, GPIO mapping and valid device tree information). The purpose of adding this is because of the micro-HAT (uHAT) specification introduced by Raspberry Pi (specific reference). To ensure consistency and compatibility with future Raspberry Pi add-on boards, and provide a better user experience.
Note:we have not used it here, don’t bother
Additional information
| Weight | 0.171 kg |
|---|
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