Homework 12: Knock LockHomework 12:

This project is fun to play with. It combined something we did in the previous project and formed an interesting experience. I can imagine a lot of new ways to use them in the projects such as using it as a controller for games.

The build in the project is not that hard, everything went smoothly without causing any issue. This is what I have:

I think the piezo would works better if I put it in a paper box like it is shown in the demo, but I didn’t find one for it. Here is my circuit: