To run react-native first download and install node.js in windows.

After installing node.js open cmd and run this following command:

// https://instamobile.io/android-development/generate-react-native-release-build-android/

https://stackoverflow.com/questions/53239705/react-native-error-duplicate-resources-android

This command for initiating the project

Test Event
{
  "thing_name": "myThingNew",
  "access_key": "AKIAXLU4V3LTW4PS6CCH",
  "secret_key": "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",
  "policy_name": "ESP32_Test_Policy",
  "certificate_arn": "arn:aws:iot:us-east-1:506060987111:cert/f1020e6ed117a7c2834f25fc3025f54d6ff5b7662d339c6d4367937a2a0d135d"
}

lambda_function.py 
import boto3

def lambda_handler(event, context):
    thing_name = event['thing_name']
    access_key = event['access_key']
    secret_key = event['secret_key']
    policy_name= event['policy_name']
    certificate_arn = event['cert

This is windows youtube video Downloader. This is first version: 

You can download from here:

https://timxn.com/FileDownload/VideoDownloader.zip

Create account in ThingsSpeak . After sign up complete you see the following profile dashboard after click on MyProfile.

First open the application in visual studio and click on Build menu then drop down list will be appeared. Now click on publish [application name] 

 Click on New and click on Folder if you wish to publish the application as a folder.

 This code worked for me:

This my Fully working coder i have used in my project

 In Controller Write this view and function:

Here we will run vlc player. It is my working code 

Download grbl latest zip file from the github link https://github.com/gnea/grbl. Extract the zip file.

SerialPortCL.cs