[SOLVED] Cannot Connect DS3231 and MPU6050

Using Arduino Networking, Protocols, and Devices
#1

Hi, I have seen that about everyone can’t connect the DS3231 and MPU6050 modules in an Arduino Board. I am also faced with this problems. But I have finally fixed the problem, so I am sharing with the community.

You just need the following Arduino Libraries ::

  1. DS3231 Library, Download it from here :: Link = DS3231 - Rinky-Dink Electronics
    Note :: Download any other DS3231 Library…
  2. MPU6050 Library, Download it from here :: Link = MPU6050

Connect The DS3231 and MPU6050 Modules to ::
DS3231 Arduino

VCC 5V
GND GND
SDA 8
SCL 9

MPU6050 Arduino

VCC 5V
GND GND
SDA SDA
SCL SCL

Code ::

#include "MPU6050.h"
#include "Wire.h"
#include <DS3231.h>
MPU6050 accelgyro;
int16_t ax, ay, az, gx, gy, gz;

DS3231 rtc(8, 9);


double timeStep, time, timePrev;
double arx, ary, arz, grx, gry, grz, gsx, gsy, gsz, rx, ry, rz;

int i;
double gyroScale = 131;

void setup() {
  Wire.begin();
  accelgyro.initialize();
  Serial.begin(9600);
  rtc.begin();
}

void loop() {
  timePrev = time;
  time = millis();
  timeStep = (time - timePrev) / 1000; 
  accelgyro.getMotion6(&ax, &ay, &az, &gx, &gy, &gz);
  gsx = gx/gyroScale;   gsy = gy/gyroScale;   gsz = gz/gyroScale;
  arx = (180/3.141592) * atan(ax / sqrt(square(ay) + square(az))); 
  ary = (180/3.141592) * atan(ay / sqrt(square(ax) + square(az)));
  arz = (180/3.141592) * atan(sqrt(square(ay) + square(ax)) / az);
  if (i == 1) {
    grx = arx;
    gry = ary;
    grz = arz;
  }
  else{
    grx = grx + (timeStep * gsx);
    gry = gry + (timeStep * gsy);
    grz = grz + (timeStep * gsz);
  }  
  rx = (0.1 * arx) + (0.9 * grx);
  ry = (0.1 * ary) + (0.9 * gry);
  rz = (0.1 * arz) + (0.9 * grz);
  Serial.print("X axis == ");
  Serial.println(arx);
  Serial.print("Y axis == ");
  Serial.println(ary);
  Serial.print("Z axis == ");
  Serial.println(arz);
  Serial.print("Time == ");
  Serial.println(rtc.getTimeStr());
  i = i + 1;
  delay(1000);
}
#2

Sorry, don't download any other DS3231 library!

#3