3.68 €
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HMC5883L GY271 3-Axis Compass Module for Arduino
Brand: satkit
3.68€
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The HMC5883L GY271 compass module is a three-dimensional magnetometer sensor that integrates three magnetic field sensors on the X, Y and Z axes. This device uses an HMC5883L chip with a 12-bit ADC converter and 2-wire I2C bus communication, making it easy to connect and use with microcontrollers such as Arduino, PIC or Freescale.
This module is perfect for applications that require accurate detection of the Earth's magnetic field, allowing the device's absolute orientation to be calculated using trigonometric calculations. It is widely used in automation projects, robotics, unmanned vehicles and quadcopters.
- Supply voltage: 3V to 5V
- Interface: I2C
- Model: GY-271
- Chip: HMC5883L
- Measurement accuracy: ±2º
- Type: Digital compass
- Low power consumption
- Measurement range: ±1,3 to 8 Gauss
- Resolution: 5 mili Gauss
- Dimensions: 14 mm x 15 mm
- Includes two pin headers for mounting: one straight and one 90º
This sensor is compatible with most Arduino boards and can be easily integrated into projects that require spatial orientation or magnetic detection. Its low power consumption and compact size make it ideal for portable devices and embedded systems.
Examples of use include:
- Digital compasses for mobile robots
- Navigation systems for drones and unmanned vehicles
- Automation projects that require orientation detection
- Monitoring magnetic fields in industrial or educational environments
Thanks to its I2C interface, the module allows simple and fast communication with microcontrollers, making programming and integration easier in electronics and robotics projects.
- 3-axis magnetometer sensor with HMC5883L chip
- I2C interface communication compatible with Arduino
- Measurement accuracy of ±2º for reliable orientation
- Low power consumption ideal for portable projects
- Measurement range of ±1,3 to 8 Gauss with 5 mili Gauss resolution
- Includes two pin headers for flexible mounting
- Compact dimensions of 14 mm x 15 mm
- Compatible with Arduino, PIC and Freescale microcontrollers
Customer Questions & Answers
What advantages does the HMC5883L offer compared with other magnetometers for Arduino?
The HMC5883L stands out for its low power consumption, high resolution (5 mGauss) and accuracy of ±2°, making it suitable for applications where fast response and energy saving are key. Compared with alternatives such as the QMC5883 or MPU9250, it is preferred when standard I2C compatibility and simple integration are priorities, although its measurement range (±1.3–8 Gauss) may be lower than sensors designed for high magnetic-field environments.
What are the dimensions and weight of the module, and what accessories are included in the box?
The module measures 14 mm x 15 mm, is very compact and lightweight; its typical weight is under 5 g. The package includes the main GY-271 sensor with HMC5883L chip and two pin headers (one straight and one 90-degree angled) for flexible mounting options on breadboards or PCBs.
What should I bear in mind regarding electrical installation and voltage compatibility?
The module operates from a 3 V to 5 V DC supply, so it is directly compatible with most Arduino, STM32 and other microcontroller boards using those logic levels. The I2C bus requires pull-ups on SDA and SCL if they are not already built into your board. Do not use voltages outside this range to avoid permanent damage.
Are there any recommendations for calibrating and optimising sensor accuracy in real projects?
For maximum accuracy, it is recommended to carry out hard-iron and soft-iron calibration to compensate for distortions caused by nearby metal components and stray magnetic fields. Avoid installing it near electric motors or magnets. Ideally, mount the sensor horizontally and run calibration routines in the device’s final environment.
What is its durability, and does the magnetometer require any maintenance?
The HMC5883L is a solid-state device with no moving parts, so it requires no periodic maintenance. Its service life exceeds 10 years under normal conditions (0–70°C, humidity < 85%). It is recommended to avoid exposure to liquids and knocks that could damage the board or solder joints.
Which microcontrollers is the HMC5883L GY271 module compatible with?
The module is compatible with microcontrollers that support I2C communication, such as Arduino, PIC and Freescale.
What is the voltage range for powering this module?
The module works with a supply voltage between 3V and 5V.
What accuracy does the module's digital compass have?
The measurement accuracy is ±2 degrees, suitable for orientation applications.
How is the module connected to Arduino?
It connects via the I2C bus using the Arduino's SDA and SCL pins for data communication.
Does it include mounting accessories?
Yes, it includes two pin headers for mounting, one straight and one at a 90-degree angle.
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