Learn how the touch screen on phones and tablets work, then make your own!
You will use a laser cutter to make the body of your piano or guitar, then add the touch sensors, and finally connect it all to an Arduino to bring it to life!
Build a magic wand that you can wave around in the air to create a holographic message!
Human vision is slow, we continue to see things even after they have moved, this is how movies and videos work.
It is called Persistence of Vision.
You will take advantage of this and create a wand with multiple LEDs that turn on and off so fast,
your eyes will think they see a message floating in the air!