HMC5883L

GY-271 HMC5883L模塊 電子指南針羅盤模塊 三軸磁場傳感器

#include <Wire.h>

#define Addr 0x1E // 7-bit address of HMC5883 compass

void setup() {

Serial.begin(9600);

delay(100); // Power up delay

Wire.begin();

// Set operating mode to continuous

Wire.beginTransmission(Addr);

Wire.write(0x02);

Wire.write(0x00);

Wire.endTransmission();

}

void loop() {

int x, y, z;

double radx, rady, radz;

// Initiate communications with compass

Wire.beginTransmission(Addr);

Wire.write(0x03);// Send request to X MSB register

Wire.endTransmission();

Wire.requestFrom(Addr, 6);// Request 6 bytes; 2 bytes per axis

if(Wire.available() <=6) {// If 6 bytes available

x = Wire.read() << 8 | Wire.read();

z = Wire.read() << 8 | Wire.read();

y = Wire.read() << 8 | Wire.read();

radx = x / 131.0;

rady = y / 131.0;

radz = z / 131.0;

}

// Print values

Serial.print("X=");

Serial.print(radx);

Serial.print(", Y=");

Serial.print(rady);

Serial.print(", Z=");

Serial.println(radz);

delay(20);

}