/* Fill-in your Template ID (only if using Blynk.Cloud) */
//#define BLYNK_TEMPLATE_ID   "YourTemplateID"

#include <ESP8266WiFi.h>
#include <BlynkSimpleEsp8266.h>

// You should get Auth Token in the Blynk App.
// Go to the Project Settings (nut icon).
char auth[] = "sbaRMaPtJamrTQ-k9stmWb3I8Ec4fSPR";

// Your WiFi credentials.
// Set password to "" for open networks.
char ssid[] = "SmS_jiofi";
char pass[] = "sms123458956";
#define R5 05  //Control D1 appliances

BLYNK_WRITE(V1)
{
  int pinValue = param.asInt(); // assigning incoming value from pin V1 to a variable
  digitalWrite(R5, pinValue);
  // process received value
}

void setup()
{
  // Debug console
  Serial.begin(9600);
  pinMode(R5, OUTPUT);
  Blynk.begin(auth, ssid, pass);
  // You can also specify server:
  //Blynk.begin(auth, ssid, pass, "blynk-cloud.com", 80);
  //Blynk.begin(auth, ssid, pass, IPAddress(192,168,1,100), 8080);
}

void loop()
{
  Blynk.run();
}

//Unity Code
code in C#

// 1)PlacementMGR

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.XR.ARFoundation;
using UnityEngine.XR.ARSubsystems;

public class PlacementMGR : MonoBehaviour
{
    // declarations
    public GameObject placementIndicator;

    [SerializeField]
    private ARSessionOrigin arSessionOrigin;
    [SerializeField]
    private ARRaycastManager arRaycastManager;

    private Pose placementPose;
    private bool placementPoseIsValid = false;
    [SerializeField]
    TrackableType trackableType = TrackableType.Planes;

    public GameObject objectToPlace;

    int i = 0 ;   
    int j = 0;

    void Update()  
    // update the location move the mobile
    {

        if(i != 1 && j != 1)  
          {
            UpdatePlacementPose();
            UpdatePlacementIndicator();
          }
       
          if(placementPoseIsValid && Input.touchCount>0 && Input.GetTouch(0).phase == TouchPhase.Began && i<1 ){
            PlaceObject();
            Debug.Log("Object Place thay che");
            i++;
            if(i==1)
            {
               
                j = 1;      // place only one cube // remove this more more cube place at one time
            }
          }
    }

    void PlaceObject()   
    // place the cube
    {
        Instantiate(objectToPlace, placementPose.position, placementPose.rotation);
    }

    private void UpdatePlacementIndicator()   
    // indication place change while move the mobile
    {
        if (placementPoseIsValid)
        {
            placementIndicator.SetActive(true);
            placementIndicator.transform.SetPositionAndRotation(placementPose.position, placementPose.rotation);

        }
        else
        {
            placementIndicator.SetActive(false);
        }
    }

    private void UpdatePlacementPose()  
    {
        var screenCenter = arSessionOrigin.camera.ViewportToScreenPoint(new Vector3(0.5f, 0.5f));
        var hits = new List<ARRaycastHit>();
        arRaycastManager.Raycast(screenCenter, hits, trackableType);

        placementPoseIsValid = hits.Count > 0;
        if(placementPoseIsValid)
        {
            placementPose = hits[0].pose;

            var cameraForward = arSessionOrigin.camera.transform.forward;
            var cameraBearing = new Vector3(cameraForward.x, 0, cameraForward.z).normalized;
            placementPose.rotation = Quaternion.LookRotation(cameraBearing);
        }

    }
}

//2) button code

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.Events;
using UnityEngine.Networking;
 
public class Button : MonoBehaviour {
    bool isRed;
    public string url_on;    //create variable for on api
    public string url_off;   //create variable for off api

    IEnumerator GetRequest(string uri) // Fuction for the GetRequest APi
    {
        using (UnityWebRequest webRequest = UnityWebRequest.Get(uri))
        {
            // Request and wait for the desired page.
            yield return webRequest.SendWebRequest();
 
        }
    }

    public void OnMouseUp(){
        isRed = !isRed;
        if(isRed){
            GetComponent<Renderer>().material.color = Color.red;    // change the cube color to red
            StartCoroutine(GetRequest(url_on));     // On APi working  
            Debug.Log("LED IS ON");
        }
        else{
            GetComponent<Renderer>().material.color = Color.white;    // change the cube color to white
            StartCoroutine(GetRequest(url_off));  // Off API working
            Debug.Log("LED IS OFF");
        }
    }
}