Hey I’m working in Arduino project, I’m using qmc5883l sensor, I have to detect magnetic field of wires in the wall but I got a problem and I need help with the code ,this is my first school project, can anyone show me what to do?
I don’t know what to do next, my values get higher when a magnet is near the sensor but I don’t this this is correct so anyone any idea?
#include <QMC5883LCompass.h>
#include <Wire.h> //I2C Arduino Library
QMC5883LCompass compass;
#define addr 0x0D //I2C Address for The HMC5883
void setup() {
Serial.begin(9600);
Wire.begin();
Wire.beginTransmission(addr); //start talking
Wire.write(0x0B); // Tell the HMC5883 to Continuously Measure
Wire.write(0x01); // Set the Register
Wire.endTransmission();
Wire.beginTransmission(addr); //start talking
Wire.write(0x09); // Tell the HMC5883 to Continuously Measure
Wire.write(0x1D); // Set the Register
Wire.endTransmission();
}
void loop() {
int x, y, z; //triple axis data
Wire.beginTransmission(addr);
Wire.write(0x00); //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(); //MSB x
x |= Wire.read() << 8; //LSB x
z = Wire.read(); //MSB z
z |= Wire.read() << 8; //LSB z
y = Wire.read(); //MSB y
y |= Wire.read() << 8; //LSB y
}
float B = sqrt(pow(x, 2) + pow(z, 2)+pow(y, 2)) * 1.3 / 2048;
// 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();
Serial.print("B Value: ");
Serial.println(B);
delay(1000);
}
