CommunityForumWikiBlogLearn
Modules
Communications

Gravity: GNSS Positioning & Timing Module

SKU: DFR1103

This product is a module integrating GNSS and RTC chips. It receives satellite signals like BeiDou and GPS for accurate time, calibrating RTC to ensure high accuracy and stability. Without GNSS signals, the onboard RTC works. For outdoor low-power scenarios, the API cuts GNSS power to reduce consumption. It suits precise time synchronization applications.

Board Overview of Gravity: GNSS GPS BeiDou Positioning Module with RTC Function

Downloadable Resources

  • Docs
  • Tech Specs
    • 1. Example Code for Arduino-Get GNSS Position

    A detailed tutorial on obtaining GNSS positioning using Arduino, including hardware setup, software requirements, and a sample code walkthrough for accurate location data retrieval.
    2. Example Code for Arduino-Get RTC Time

    A comprehensive guide on setting up and retrieving Real-Time Clock (RTC) time using Arduino and various hardware components. It includes detailed instructions on hardware preparation, software setup, and sample code to achieve accurate timekeeping. Essential for anyone seeking to implement precise time tracking in Arduino projects.
    3. Example Code for Arduino-Calibrate RTC with GNSS

    A step-by-step guide on calibrating an Arduino's RTC using GNSS, including necessary hardware and software, wiring diagrams, and example code for accurate time synchronization. Enhance your projects with precise timing capabilities.
    Reference

    This article serves as a reference guide for GNSS and RTC libraries applicable to Arduino and PlatformIO development environments, detailing installation instructions, API descriptions, and usage examples to help optimize GNSS timing and RTC calibration.

    Specification

    Parameter Value
    Operation Voltage 3.3V~5V DC
    Output Signal I2C/UART
    GNSS Accuracy 2.0m CEP
    First positioning time Cold start 30S, Hot start 2S
    Operation current 46mA (GNSS chip on), <1mA (GNSS chip off). The above are all tested under 5V condition.
    Antenna Interface IPEX 1
    PCB Size 32mm * 42mm

    Pinout

    Num Label Function
    1 D/T I2C data line SDA
    UART-TX
    2 C/R I2C clock line SCL
    UART-RX
    3 - Ground
    4 + VCC
    5 PPS GNSS Chip pulse output per second
    6 INT Active-low interrupt
    7 32K 32.768KHz pulse output

    Was this article helpful?

    TOP