Let me explain in further detail.
I can't write Java so that's why I'm request this project.
You can use a regular flash drive for testing, if the communication part is done, I can later make the integration with the weiheng scale myself.
Also make sure you add another link for refreshing the information, maybe reload the applet and print the info to the html again.
The budget is low cause you don't have to do much. Just write a simple applet and make the communication between the 3 technologies.
Make sure you have enough experience with this before you make your bid.