Certainly! Below is the English version of the instructions for creating a Flutter project that generates a QR code and sends JSON data using the qr_flutter library. I've also included the relevant code snippets for you to copy:

1. Add the qr_flutter Library:

   • Open your pubspec.yaml file and add the following line to the dependencies section:

     dependencies:
       qr_flutter: ^4.1.0

   • If you're using the master channel of Flutter and want to try the latest version, you can directly pull from the GitHub repository:

     dependencies:
       qr_flutter:
         git:
           url: https://example.com

   • Note that the master branch may be unstable.

2. Use the qr_flutter Library:

   • Import the library in your code:

     import 'package:qr_flutter/qr_flutter.dart';

   • To render a basic QR code, use the following code snippet:

     QrImageView(
       data: '1234567890',
       version: QrVersions.auto,
       size: 200.0,
     )

   • You can customize the QR code output based on your data requirements. Here are some available options:
     • version: Choose QrVersions.auto or a value between 1 and 40. For details and limitations, refer to the QR code version documentation.

Feel free to copy and adapt this information for your project. Good luck! 🚀