This example we have a webpage that reads the serial monitor from the Arduino Board and move a ball in the canvas

• Node.js - To host the HTML content
• Arduino Create Plugin - To read the serial monitor with WebSockets
• Arduino IDE / Arduino Create
• Arduino Board

• Go to NodeServer's folder and install this with the console
• npm install express@4.15.2
• npm install socket.io

• Go to the Arduino Create Plugin install Directory and open "Config.ini" we will need to replace the value at origins= with "http://localhost:3000" without quotes, the port can be different, see the server console to check.
• Restart the plugin

• Just go to the directory where you have installed this and type in the CMD node app.js or by launching the run.bat

• Upload a sketch to output serial numbers to an Arduino Board
• Go to http://localhost:3000 and see the output

• Open the Serial monitor from the IDE / Create to see if there are outputs
• If you have the serial monitor openned close it and reload
• You can open the serial monitor from Create, it doesn't matter
• If you changed the config.ini, restart the plugin to make the changes