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Accelerometer 3 Axis Compass Sensor Module GY-511 LSM303

Accelerometer 3 Axis Compass Sensor Module GY-511 LSM303

The LSM303 Module integrates a triple-axis accelerometer and magnetometer using the STMicroelectronics LSM303 IC. It provides 3D digital linear acceleration and magnetic field measurements with 16-bit data output via an I2C interface. The sensor can measure dynamic acceleration caused by motion, shock, or vibration, and detects magnetic fields based on the Lorentz effect, converting induced currents into differential voltages per axis. This module is ideal for applications such as Arduino-based digital compasses, position detection, map rotation, pedometers, and other motion sensing projects.

Package Includes:

  • 1 x LSM303DLHC e-Compass 3-axis Accelerometer and 3-axis Magnetometer Module

Compass
45.15 AED 45.15 AED (Tax included)

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Specifications:

  • Power supply: 3-5V
  • Model: GY-511
  • 3 magnetic field channels and 3 acceleration channels
  • Magnetic field full scale range: ±1.3 to ±8.1 gauss
  • Linear acceleration full scale: ±2g, ±4g, ±8g, ±16g
  • 16-bit data output resolution
  • I²C serial communication interface
  • Power-down and low-power modes supported
  • 2 programmable interrupt generators (free-fall, motion detection)
  • Embedded temperature sensor
  • Built-in FIFO buffer
  • 6D/4D orientation detection
  • Chip includes 12-bit ADC with 16-bit data output
  • Pin pitch: 2.54 mm
  • Module size: 20.5mm × 14.5mm

Applications:

  • Tilt-compensated digital compasses
  • Map rotation and position detection
  • Motion-triggered functions
  • Free-fall detection and impact logging
  • Click and double-click gesture recognition
  • Pedometers and fitness trackers
  • Power-saving features for handheld devices
  • Display orientation adjustment
  • Gaming and virtual reality input
  • Vibration monitoring and compensation

 

LSM303DLHC GY-511 Module Pinout:

Pin Name Description
1 GND Ground connection to complete the circuit
2 3.3V Power supply input (recommended 3.3V)
3 SDA I2C Serial Data line
4 SCL I2C Serial Clock line
5 INT1 Inertial Interrupt 1 (external interrupt request)
6 INT2 Inertial Interrupt 2 (external interrupt request)
7 DRDY Data Ready indicator output
8 VIN Main power supply input (2.5V to 5.5V)

Arduino Code Example for LSM303 Module:

Before using the code, download and install the LSM303 library.

#include <Wire.h>
#include <LSM303.h>

LSM303 compass;
LSM303::vector running_min = {32767, 32767, 32767};
LSM303::vector running_max = {-32768, -32768, -32768};
char report[80];

void setup() {
  Serial.begin(9600);
  Wire.begin();
  compass.init();
  compass.enableDefault();
}

void loop() {
  compass.read();

  running_min.x = min(running_min.x, compass.m.x);
  running_min.y = min(running_min.y, compass.m.y);
  running_min.z = min(running_min.z, compass.m.z);

  running_max.x = max(running_max.x, compass.m.x);
  running_max.y = max(running_max.y, compass.m.y);
  running_max.z = max(running_max.z, compass.m.z);

  snprintf(report, sizeof(report), 
    "min: {%+6d, %+6d, %+6d} max: {%+6d, %+6d, %+6d}", 
    running_min.x, running_min.y, running_min.z, 
    running_max.x, running_max.y, running_max.z);

  Serial.println(report);
  delay(100);
}