L76X Multi-GNSS HAT for Raspberry Pi, GPS, BDS, QZSS

Features

• Standard Raspberry Pi 40PIN GPIO extension header, supports Raspberry Pi series boards, Jetson Nano
• Supports Multi-GNSS systems: GPS, BDS, and QZSS
• EASY™, self track prediction technology, help quick positioning
• AlwaysLocate™, intelligent controller of periodic mode for power saving
• Supports DGPS, SBAS (WAAS/EGNOS/MSAS/GAGAN)
• UART communication baudrate: 4800~115200bps (9600bps by default)
• Onboard battery holder, supports ML1220 rechargeable battery, for preserving ephemeris information and hot starts
• 4x LEDs for indicating the module working status
• Comes with development resources and manual (examples for Raspberry Pi/Jetson Nano/Arduino/STM32)

GNSS Specifications

• Band: GPS L1(1575.42Mhz), BD2 B1 (1561.098MHz)
  • Channels: 33 tracking ch, 99 acquisition ch, 210 PRN ch
  • C/A code
  • SBA: WAAS, EGNOS, MSAS, GAGAN
• Horizontal position accuracy:
  • Autonomous: <2.5mCEP
• Time-To-First-Fix @-130dBm (EASY™ enabled):
  • Cold starts: <15s
  • Warm starts: <5s
  • Hot starts: <1s
• Sensitivity:
  • Acquisition: -148dBm
  • Tracking: -163dBm
  • Re-acquisition: -160dBm
• Dynamic performance:
  • Altitude (max): 18000m
  • Velocity (max): 515m/s
  • Acceleration (max): 4G

General Specifications

• Communication interface: UART
• Baudrate: 4800~115200bps (9600bps by default)
• Update rate: 1Hz (default), 10Hz (max)
• Protocols: NMEA 0183, PMTK
• Power supply voltage: 5V / 3.3V
• Operating current: 13mA
• Operating temperature: -40℃ ~ 85℃
• Dimensions: 65mm x 30.5mm

Applications

• Vehicle tracking
• Asset tracking
• Security system
• Industrial PDA
• GIS application

What’s on Board

1. L76B module
2. CP2102: USB TO UART converter
3. CAT24C32: EEPROM
4. RT9193-33: power manager
5. Backup mode wakeup button
6. Standby switch
7. Indicators:
   • RXD/TXD: UART RX/TX indicator
   • PPS: GPS status indicator
   • PWR: power indicator
8. Raspberry Pi GPIO connector: for connecting with Raspberry Pi
9. USB TO UART port
10. GNSS antenna connector
11. Battery holder: supports ML1220 rechargeable battery, for preserving ephemeris information and hot starts
12. UART selection jumpers
    • A: control the L76B through USB TO UART
    • B: control the L76B through Raspberry Pi
    • C: access Raspberry Pi through USB TO UART

Dimension

PACKAGE CONTENT

Weight: 0.129 kg

Note: Raspberry Pi is NOT included.

1. L76X GPS HAT x1
2. GPS External Antenna (B) x1
3. USB type A plug to micro plug cable x1
4. RPi screws pack (2pcs) x1
5. 2x20PIN female header x1

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Development Resources

Wiki : www.waveshare.com/wiki/L76X_GPS_HAT