I have used node.js to implement the server side of the project. The user can transmit/receive the data to/from the launchpad. For testing online, i have used localtunnel which allows us to convert the intranet to internet. The UI receives the data from a MSP430FR5739 launchpad and the data is then displayed on the website. Also, you can transmit data from UI to the launchpad as well. Tested on all commonly known browsers. The detailed instructions and the source files are there on my github repository.
Details
youtube demonstration video:
The detailed instructions and the source files are there on my github repository: link to the repositoryor, you can download the project files from here: master.zip
I've been looking for web visualization just like this. Thanks for posting your method, I'm going to give it a try!