Hi,
I have used HMC588l magnetometer for my quadcopter project where I will have to calculate yaw angle for the stabilization and I have planned to use complementary filter algorithm for accurate angles
In this equation I need to use Yaw compass values, Actually I am getting raw values from my Hmc 588l magnetometer, I am not certain about what values should the raw value be converted so that I can use it in this equation. The actual raw values from my magnetometer is attached
/*
An Arduino code example for interfacing with the HMC5883by: Jordan McConnell
SparkFun Electronics
created on: 6/30/11
license: OSHW 1.0, OSHW - Definition of Free Cultural WorksAnalog input 4 I2C SDA
Analog input 5 I2C SCL
*/#include <Wire.h> //I2C Arduino Library
#define address 0x1E //0011110b, I2C 7bit address of HMC5883
void setup(){
//Initialize Serial and I2C communications
Serial.begin(9600);
Wire.begin();//Put the HMC5883 IC into the correct operating mode
Wire.beginTransmission(address); //open communication with HMC5883
Wire.write(0x02); //select mode register
Wire.write(0x00); //continuous measurement mode
Wire.endTransmission();
}void loop(){
int x,y,z; //triple axis data
//Tell the HMC5883 where to begin reading data
Wire.beginTransmission(address);
Wire.write(0x03); //select register 3, X MSB register
Wire.endTransmission();//Read data from each axis, 2 registers per axis
Wire.requestFrom(address, 6);
if(6<=Wire.available()){
x = Wire.read()<<8; //X msb
x |= Wire.read(); //X lsb
z = Wire.read()<<8; //Z msb
z |= Wire.read(); //Z lsb
y = Wire.read()<<8; //Y msb
y |= Wire.read(); //Y lsb
}//Print out values of each axis
Serial.print("x: ");
Serial.print(x);
Serial.print(" y: ");
Serial.print(y);
Serial.print(" z: ");
Serial.println(z);delay(250);
}
