need some help

i have made this capacitive touch sense piano

and it works perfectly

but I'm not sure how it works..can someone please explain...
i need to explain my project in school....any help is welcome

Post the program code here.

And please post your program using the code button </> so it looks like this. See How to use the Forum

...R

(deleted)

spycatcher2k:
Just tell them you stole it from the internet and did no actual work

.... and apply cold water to that buuuurn.

Google 'capacitive sensing', rememberize the first 5 results, and you'll be golden.