How can I use mpu6050 and arduino uno to control cube so the cube will move with mouse position? - unity3d

Question

When I first tried the arduino code with my mpu6050, the serial monitor showed the readings. However, when I tried to connect it with unity, the readings cannot be showed or used in unity. I was stuck at this problem. I was trying to make the cube that i created in unity to move with the mouseposition then replaced by the mpu 6050.
Arduino code
#include <Wire.h>
#include <I2Cdev.h>
#include <MPU6050.h>
MPU6050 mpu;
int16_t ax, ay, az, gx, gy, gz;
int vx, vy;
void setup() {
Serial.begin(115200);
Wire.begin();
mpu.initialize();
//if (!mpu.testConnection()) { while (1); }
}
void loop() {
mpu.getMotion6(&ax, &ay, &az, &gx, &gy, &gz);
vx = ((gx+300)/150)-1; // "+300" because the x axis of gyroscope give
values about -350 while it's not moving. Change this value if you get
something different using the TEST code, chacking if there are values far
from zero.
vy = -(gz-100)/150; // same here about "-100"
String output = String(gx) + ";" + String(gz) + ";" + String(vx) + ";" +
String(vy);
Serial.println(output);
Serial.flush();
delay(10);
}
Unity code
public class Cube : MonoBehaviour {
SerialPort stream = new SerialPort("COM4", 115200);
public Camera cam;
public float mousex;
public float mousey;
public GameObject target; // is the gameobject to
public float acc_normalizer_factor = 0.00025f;
public float gyro_normalizer_factor = 1.0f / 32768.0f; // 32768 is max
value captured during test on imu
//float curr_angle_x = 0;
//float curr_angle_y = 0;
//float curr_angle_z = 0;
float curr_offset_x = 0;
float curr_offset_y = -2;
void Start()
{
stream.Open();
cam = Camera.main;
}
void Update()
{
string dataString = "null received";
dataString = stream.ReadLine();
char splitChar = ';';
string[] dataRaw = dataString.Split(splitChar);
float vx = int.Parse(dataRaw[2]);
float vy = int.Parse(dataRaw[3]);
curr_offset_x += (vx * acc_normalizer_factor);
curr_offset_y += (vy * acc_normalizer_factor);
//get mouse possition
mousex = (curr_offset_x);
mousey = (curr_offset_y);
//adapt it to screen
// 5 in z to be in the front of the camera, but up to you, just
avoid 0
Vector3 mouseposition = cam.ScreenToWorldPoint(new Vector3(mousex,
mousey, 5));
//make your gameobject fallow your input
target.transform.position = mouseposition;
}

Answer 1

First of all, check your device. Is the data being sent by your device and received by machine the mpu is connected to?
Also you can try to Debug.Log(dataString) in Unity right after dataString = stream.ReadLine(); in your code (it makes sense only if data from mpu is receiving by machine your device is connected to).