Compasses Accelerometer 3-Axis Sensor Module MAG3110

This module is a digital triple-axis magnetometer based on the MAG3110 sensor. It integrates a magnetic transducer with an onboard ASIC responsible for control logic and I2C communication. The sensor can measure magnetic fields with a full-scale range of up to approximately ±1000 uT. When combined with a 3-axis accelerometer, the MAG3110 can be used to build an orientation-independent electronic compass capable of delivering accurate heading information.

Package Includes

1 x MAG3110 Triple-Axis Magnetometer Sensor Module

Compass

47.25 AED (Tax included)

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The module communicates through a two-wire I2C interface with data output rates of up to 80 Hz and supports fast-mode I2C operation up to 400 kHz. It operates from a low-voltage power supply ranging between 1.95 V and 3.6 V. Standard 2.54 mm pin spacing makes it easy to use on breadboards, and the board includes selectable I2C pull-up resistors via solder jumpers along with multiple mounting holes.

Features

Digital triple-axis magnetic field sensing
Onboard ASIC for control and I2C communication
Orientation-independent compass capability when paired with an accelerometer
Fast-mode I2C interface up to 400 kHz
Selectable I2C pull-up resistors via solder jumpers
Integrated temperature sensor
Standard 2.54 mm pin spacing for easy breadboarding
Four mounting holes for secure installation

Specifications

Operating voltage: 1.95 V to 3.6 V
Full-scale magnetic field range: ±1000 uT
Sensitivity: 0.10 uT
Interface: I2C (up to 400 kHz fast mode)
Maximum output data rate: 80 Hz
I2C pull-ups: Selectable via solder jumpers
Integrated temperature sensor
Mounting holes: 4

Pinout

MAG3110 Triple Axis Magnetometer Breakout Board — PMD Way

Pin	Description
3.3V	Supply voltage (3.3V)
GND	Ground connection
SDA	Serial data line for I2C communication
SCL	Serial clock line for I2C communication
INT	Interrupt output, goes high when new data is ready
VCC	Supply voltage (5V input via onboard regulation)

Applications

Electronic compass systems
UAV and robotics navigation
Dead-reckoning systems

How to Use

Power the module using either the 3.3V pin or the VCC pin (if onboard regulation is available).
Connect the module to a microcontroller using the I2C interface.
Ensure the I2C pull-up resistors are enabled if required (via onboard solder jumpers).
Upload the example code to initialize the sensor and read magnetic field data.
Place the module away from strong magnetic fields such as motors, speakers, or metal objects.
Use the X, Y, and Z magnetic data to determine heading or orientation.

Typical Connections (Arduino Uno)

Module Pin	Arduino Uno
3.3V	3.3V
GND	GND
SDA	A4
SCL	A5
INT	Not Connected (Optional)

Library Requirement

Install the Adafruit MAG3110 library from the Arduino Library Manager.
Also install the Adafruit Unified Sensor library if prompted.

Example Code (Arduino)


#include "Wire.h"
#include "Adafruit_Sensor.h"
#include "Adafruit_MAG3110.h"

Adafruit_MAG3110 mag = Adafruit_MAG3110();

void setup() {
  Serial.begin(9600);
  Wire.begin();

  if (!mag.begin()) {
    Serial.println("MAG3110 not detected!");
    while (1);
  }
}

void loop() {
  mag.read();

  Serial.print("X: ");
  Serial.print(mag.x);
  Serial.print("  Y: ");
  Serial.print(mag.y);
  Serial.print("  Z: ");
  Serial.println(mag.z);

  delay(500);
}

Code Explanation

Initializes I2C communication and the magnetic sensor.
Reads magnetic field values along X, Y, and Z axes.
Outputs raw magnetic field data to the Serial Monitor.
Data can be processed further to calculate compass heading.

Applications

Electronic compass and heading systems
Robotics navigation and orientation
UAV flight stabilization
Dead-reckoning and motion tracking systems