Unity and arduino processing

Question

This question relates to this link: https://www.freetronics.com.au/blogs/news/6537043-experimenting-with-unity-processing-and-arduino#.W2-SFs4zbIU Does anyone have any idea how I would begin doing this? I cannot find the tutorial or code that relates to this. I have a cube on unity that changes colour and texture according to the input from a force sensing resistor. How would I get the cube to react in this way (as in the video)? Any assistance will be appreciated

In this video, a flexiforce sensor is housed in a cube. When the user presses the sensor, a cube on Unity reacts in the same manner that the real cube is squeezed; its basically a virtual version of what is happening to the cube in real life

Answer 1

This works well:

     using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using System.IO.Ports;
using System.IO;
public class arduino : MonoBehaviour
{

    public SerialPort sp = new SerialPort("\\\\.\\COM5", 9600);// Com port and the baud rate of the arduino
    Material m_Material;
    GameObject Sphere;



    void Awake()
    {
        Sphere = GameObject.FindWithTag("Player");
        m_Material = GameObject.FindWithTag("Player").GetComponent<Renderer>().material;
    }
    void Start()
    {
        if (!sp.IsOpen)
        {
            sp.Open(); // Open 
        }
        sp.ReadTimeout = 250; // Timeout for reading 

    }

    // Update is called once per frame
    void Update()
    {
        if (sp.IsOpen)
        { // Check to see if the serial port is open 
            try
            {

                //string portreading = sp.ReadLine(); // get the string output of the serial port 
                //float amount = int.Parse(portreading);
                string value = sp.ReadTo("EOL"); //Read the information
                float amount = float.Parse(value);


                if ((amount > 251f))
                {
                    m_Material.color = Color.red;
                    Renderer _rend = Sphere.GetComponent<Renderer>();
                    Sphere.GetComponent<Renderer>().material = _rend.material;
                    _rend.material.mainTexture = Resources.Load("face1") as Texture;
                    Sphere.transform.localScale = new Vector3( 2f, 0.03f*amount, 2f);
                    //Sphere.transform.position = new Vector3(2f, 2f , 2f);
                }
                else
                {
                    m_Material.color = Color.white;
                    Sphere.transform.localScale = new Vector3(2f, 10f, 8f);

                }
            }
            catch (System.Exception)
            {

            }
        }
    }