how do i use it tho?

[awesome8o]

I downloaded it but don't know how to run it because im a noob

[cubedhuang]

Download Processing 2.2.1 (from processing.org) and unzip the file. Then, run processing.exe inside of the extracted folder. Go to File => Open... and navigate to the downloaded folder.
Then, press the little play button in the top corner. That's it!

[ProjectHSI]

Processing files are .pde And never changed from .pde to .pde2 to .pde3. Just compile and your ready to go.