DFRobot Gravity: GNSS GPS BeiDou Receiver Module - I2C & UART
Description
- DFRobot Gravity: GNSS GPS BeiDou Receiver Module
- Offers high-precision positioning with GNSS BeiDou system
- Supports multi-satellite system joint positioning
- Enhances accuracy and speed in complex environments
- Compatible with Arduino, ESP32, and Raspberry Pi
- Provides two data output types: I2C and UART
The DFRobot Gravity: GNSS GPS BeiDou Receiver Module - I2C & UART is a high-precision positioning module that utilizes the GNSS BeiDou system. This module is designed to provide accurate and stable data, including longitude, latitude, time, and altitude, making it an ideal solution for various outdoor positioning scenarios. These may include vehicle positioning, item tracking, weather stations, and general outdoor positioning.
The module's unique feature is its ability to support multi-satellite system joint positioning. This includes satellite systems such as BeiDou, GPS, GLONASS, and Galileo. The advantage of using multiple systems for joint positioning is the increased number of visible and usable satellites, which in turn enhances the accuracy and speed of positioning. This feature allows the module to maintain high-precision positioning even in complex environments, thus providing more accurate positioning data.

In the context of smart farming, for instance, GPS signals may be compromised due to terrain and vegetation, resulting in decreased positioning accuracy. However, the use of multiple satellite systems with this GNSS receiver module can mitigate signal interference, thereby improving positioning accuracy and speed. This results in precise farmland management and crop planting.
The module's multi-satellite system joint positioning ensures that even if some satellite signals are affected by weather and terrain, other satellites can still provide reliable positioning data. This ensures the accuracy and reliability of positioning. For example, in ship positioning, where the climate and terrain at sea can greatly vary, positioning accuracy and stability are crucial. The module's support for joint positioning of multiple satellite systems can effectively enhance positioning accuracy and stability, thus meeting the requirements of ship positioning.

The DFRobot Gravity: GNSS Gps BeiDou Receiver Module is designed for ease of use. It offers two data output types: I2C and UART and these are compatible with mainstream control devices such as Arduino, ESP32, and Raspberry Pi.
This flexibility allows the module to adapt to different application scenarios, support multiple interfaces and protocols, and facilitate customer integration and development.
- 1x Gravity: GNSS Positioning Module
- 1x GPS/BeiDou Active Ceramic Antenna (IPEX1 Connector)
- 1x Gravity 4P Sensor Cable
- 27 x 37 mm / 1.06 x 1.46 inch
- Operating Voltage: 3.3 to 5.5 V DC
- Output Signal: I2C/UART
- Positioning Accuracy: 2.0m CEP
- Time for First Positioning: 30s for cold start; 2s for hot start
- Power Consumption: 40 mA
- Antenna Interface: IPEX1
- Antenna Frequency: 1561 - 1575.42 MHz ± 3 MHz
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Refund Policy
If you are not satisfied with a product purchased from the Site, you may request a return within 30 days from the delivery date, unless the product is listed under the Return Exceptions below or is subject to specific return conditions noted on the product page.
This return policy also applies, as a minimum standard, to products sold and fulfilled by third-party vendors through the Marketplace.
Please review the Return Conditions, Return Exceptions and the process on How to Request a Return Authorization (RA) before initiating a return request.
Returns under this policy concern non-defective products. In the case of a confirmed manufacturing defect, remedies are handled under the Warranty terms, at the Vendor's discretion. See the Warranty section.
Return Conditions
To qualify for a refund under the 30-day return policy, all of the following conditions must be met:
- A valid Return Authorization (RA) number must be obtained prior to returning the product. Returns without an RA number will be refused.
- The RA number is valid for 30 days. The returned item must be received within that period.
- The RA number must be included with the return.
- Products must be returned in unused, unmodified condition (e.g., no scratches, alterations, missing parts, or signs of installation/use) and in their original packaging, suitable for resale.
- Shipping fees are non-refundable. Return shipping costs are the responsibility of the customer, except in cases of a product confirmed defective through RobotShop's troubleshooting process or of a verified shipping error by RobotShop.
- Refunds are processed within 7 days after receipt and inspection of the returned item.
- A $100 cleaning fee may apply to domestic robots returned in used or unclean condition.
- A 20% restocking fee may apply to large-quantity returns of items ordered specifically for the customer from the manufacturer or not part of RobotShop's standard inventory.
Return Exceptions
The following products are not eligible for return or refund under this policy:
- Used, damaged, or modified products — Items that show signs of use, wear, or alteration, making them unsuitable for resale.
- Consumables — Use and wear-and-tear components, altered or depleted through use (e.g., batteries, belts, brushes, gears, filament, tires, disposable bags, lubricants, greases, waxes, etc.). Not eligible for return once opened or used.
- Perishables — Goods liable to deteriorate or expire rapidly. Not eligible for return.
- Sealed goods (health or hygiene) — Items sealed for health-protection or hygiene reasons (e.g., masks, gloves, odor-absorbing products). Not eligible for return once unsealed.
- Build-it-yourself products and items requiring customer assembly — Including robots & kits, robot parts, and other products requiring assembly or soldering. Not eligible for return once assembled, soldered, or installed.
- Digital Goods, Software, and Apps — Final sale only, due to licensing restrictions.
- Clearance Items — Products identified as clearance or final sale, including end-of-life or discontinued items.
- Custom-made, personalized, or special-order items — Products manufactured, configured, adapted, or built to the customer's own specifications and requirements.
- On-Demand Items — Standard catalogue products not stocked by RobotShop and ordered specifically to fulfill a customer request.
- Professional & Specialized Equipment — See the Professional & Specialized Equipment Warranty page and Professional & Institutional Buyers (B2B) section in the Terms & Conditions.
How to Request a Return Authorization (RA)
While the same return policy applies, these orders require a separate contact process for returns.
- RobotShop Fulfilled Orders → submit a support ticket from your account under My Support Tickets.
- Marketplace Vendor Orders → submit a ticket from your account under My Marketplace Tickets to contact the vendor directly.
Note: Marketplace vendor products are normally labelled with SKUs starting with RM, and identified on the product page with the mention "Sold and fulfilled by [Vendor Name]".