GY-271 3-Axis Magnetometer Sensor Module – Precision Digital Compass

Take your navigation and orientation projects to the next level with the GY-271 3-Axis Magnetometer Sensor Module. This compact, high-precision digital compass module detects magnetic field strength across three axes — X, Y, and Z — delivering accurate heading data for drones, UAVs, robotics, and Arduino-based builds. Whether you're developing an autonomous flight controller, a GPS-aided navigation system, or a custom robotics platform, the GY-271 provides the reliable magnetic sensing you need.

Key Features

3-Axis Magnetic Sensing: Measures magnetic fields on all three axes simultaneously for precise, real-time heading and orientation data.
High Precision Output: Delivers stable, low-noise digital readings ideal for demanding navigation and orientation applications.
I²C Interface: Easy integration with Arduino, Raspberry Pi, and other microcontroller platforms via standard I²C communication.
Compact Module Design: Small PCB footprint makes it easy to embed into tight enclosures or mount onto drones and robotic frames.
Wide Compatibility: Works seamlessly with UAV flight controllers, GPS modules, and popular development boards.
Multiple Quantity Options: Available in 1PCS, 5PCS, or 10PCS packs — perfect for prototyping or larger project builds.

Specifications

Module: GY-271 (HMC5883L / QMC5883L chip)
Axes: 3-Axis (X, Y, Z)
Interface: I²C
Operating Voltage: 3.3V – 5V
Application: Drones, UAVs, Arduino, Robotics, Navigation Systems
Pack Options: 1PCS, 5PCS, 10PCS

What's in the Box

GY-271 Magnetometer Sensor Module(s) (quantity as selected)

Perfect For

DIY drone builds and UAV navigation systems
Arduino and Raspberry Pi compass projects
Autonomous robotics and heading control
GPS-aided navigation prototypes
Electronics hobbyists and makers

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Frequently Asked Questions

Q: What is the GY-271 3-Axis Magnetometer Sensor Module used for?

A: The GY-271 is a precision digital compass module that measures magnetic field strength across three axes (X, Y, Z). It is widely used in drone and UAV navigation, Arduino-based compass projects, robotics heading control, and GPS-aided navigation systems, providing accurate real-time orientation data.

Q: Is the GY-271 compatible with Arduino and Raspberry Pi?

A: Yes! The GY-271 module communicates via the standard I²C protocol, making it fully compatible with Arduino, Raspberry Pi, and most other popular microcontroller and single-board computer platforms. It typically requires only two signal wires (SDA and SCL) plus power and ground connections.

Q: What quantity options are available for the GY-271 module?

A: The GY-271 is available in three pack sizes: 1PCS (ideal for single prototypes), 5PCS (great for small project batches), and 10PCS (perfect for larger builds or classroom/workshop use). Simply select your preferred quantity before adding to cart.

Q: What voltage does the GY-271 sensor module operate at?

A: The GY-271 module supports an operating voltage range of 3.3V to 5V, making it compatible with both 3.3V systems (such as many ARM-based boards) and standard 5V Arduino boards without the need for additional level shifting in most cases.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.