Interfacing 3-Axis Compass Magnetometer Sensor Module GY-273 – HMC5883L Dengan Arduino

GY-273 module berdasarkan Honeywell HMC5883L IC low-field magnetic sensor dengan sebuah interface digital untuk aplikasi kompas dan magnetometry dengan biaya yang murah dan mempunyai akurasi 1° – 2° . Interface nya menggunakan protokol I2C serial bus sehingga praktis dan mudah untuk diaplikasikan.

Spesifikasi

• HMC5883L module (three-axis magnetic field module)
• Model: GY-273
• IC: HMC5883L
• Module Power supply : 3-5v
• Communication: IIC communication protocol
• Measuring range: ± 1.3-8 gauss
• Size: 13.9 x 18.5mm

Wiring Diagram

Kode Program

#include <Wire.h> //I2C Arduino Library

#define addr 0x1E //I2C Address for The HMC5883

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

  Wire.begin();
  Wire.beginTransmission(addr); //start talking
  Wire.write(0x02); // Set the Register
  Wire.write(0x00); // Tell the HMC5883 to Continuously Measure
  Wire.endTransmission();
}

void loop(){
  
  int x,y,z; //triple axis data

  //Tell the HMC what regist to begin writing data into
  Wire.beginTransmission(addr);
  Wire.write(0x03); //start with register 3.
  Wire.endTransmission();
   
 //Read the data.. 2 bytes for each axis.. 6 total bytes
  Wire.requestFrom(addr, 6);
  if(6<=Wire.available()){
    x = Wire.read()<<8; //MSB  x 
    x |= Wire.read(); //LSB  x
    z = Wire.read()<<8; //MSB  z
    z |= Wire.read(); //LSB z
    y = Wire.read()<<8; //MSB y
    y |= Wire.read(); //LSB y
  }
  
  // Show Values
  Serial.print("X Value: ");
  Serial.println(x);
  Serial.print("Y Value: ");
  Serial.println(y);
  Serial.print("Z Value: ");
  Serial.println(z);
  Serial.println();
  
  delay(500);
}

Output Program

Output bisa dilihat pada Serial Monitor dan seharusnya tampak seperti berikut:

X Value: 200
Y Value: 191
Z Value: -356

……. dst