Compass 3-Axis QMC5883L Module Magnetometer (GY-271)
Compass 3-Axis QMC5883L module Specifications
The Compass Module is designed for low-field magnetic sensing with a digital interface, to provide heading information for your microcontroller project.
This compact sensor fits into small projects such as UAVs and robot navigation systems.
The sensor converts any magnetic field to a differential voltage output on 3 axes. This voltage shift is the raw digital output value, which can then be used to calculate headings or sense magnetic fields coming from different directions. Example codes in C are provided below.
Compass 3-Axis QMC5883L module Key Features:
- Measures Earth's magnetic fields
- Precision in-axis sensitivity and linearity
- Designed for use with a large variety of microcontrollers with different voltage requirements
- Datasheet.
Compass 3-Axis QMC5883L Module Magnetometer (GY-271) Example Code:
This example sketch shows a reading of a heading from an QMC5883L triple-axis magnetometer on the Arduino Serial monitor.
#include <Arduino.h>
#include <Wire.h> // I2C Library
#include <QMC5883LCompass.h> // QMC5883L Compass Library
QMC5883LCompass compass;
void setup() {
Serial.begin(9600); // Initialize the serial port.
Serial.print("Sample code from botshop\n ");
Wire.begin(); // Initialize I2C.
delay(500);
Serial.print(" Initialize I2C.\n ");
compass.init(); // Initialize the Compass.
delay(500);
Serial.print(" Initialize the Compass.\n ");
delay(1000);
}
void loop() {
int x, y, z;
compass.read(); // Read compass values
x = compass.getX();
y = compass.getY();
z = compass.getZ();
Serial.print("X: ");
Serial.print(x);
Serial.print(" Y: ");
Serial.print(y);
Serial.print(" Z: ");
Serial.println(z);
delay(300);
}
Technical Specification:
Parameter QMC5883L
Voltage Supply (Vs) 2.16V ~ 3.6V
Digital Supply (VDDIO) (max) 1.65V ~ 3V6
Interface I2C
I2C Address (R,W) [RW] 0x0D [R/W]
I2C rates (kHz) 100,400
Resolution (ADC) 16Bits
Gauss Resolution +-2mG~ +-8G
Acquisition time 6ms
Active current (7Hz,10Hz) 75uA
Operating temperature -40°C ~ 85°C
