DFRobot Gravity GNSS GPS BeiDou Positioning Module with RTC - I2C & UART

The integrated Real-Time Clock (RTC) provides continuous, precise timekeeping. It is automatically calibrated using the highly accurate time signal from the GNSS satellites. After synchronization, the GNSS receiver can be powered down, allowing the RTC to maintain accurate time with minimal power consumption, ideal for long-term battery-operated applications.

The module offers dual interfaces. The UART interface provides direct access to the GNSS receiver for raw NMEA data streams, enabling latitude, longitude, and satellite info. The I2C interface is dedicated to communicating with the onboard RTC chip, allowing you to read and set the time, date, and alarm functions independently.

After the GNSS receiver has synchronized time with the RTC and is powered down, the module enters a low-power mode where current consumption drops to less than 1mA. This mode is sustained by the RTC and supporting circuitry, making the module exceptionally efficient for applications that only require periodic time checks or location updates.

The package includes an active ceramic antenna with an IPEX1 (also known as U.FL) connector. This small, high-gain antenna plugs directly into the IPEX1 port on the module. It is designed for optimal reception of GPS and BeiDou L1 band signals and is suitable for most outdoor positioning applications.