I made it and improve this project’s arduino part based on paper piano with arduino-- Hackster.io

You could also find this original idea in paper piano with arduino-- Arduino Project Hub The changes I've done to the paper piano above is not only the appearance but also the way that the wires are connected to the breadboard. Using the previous way cause few problems: the wires are too close to each other and they're sensitive, so the sounds won't stop unless you could separate the wires from not touching each other, but this could be tough because how the wires are designed to be put closely. Also, there are few mistakes in the schematic. That's the main reason why I changed these places. This project is also used in the Arduino Paper Piano which I’ve posted on the Instructables The reason I want to do something for the people with OCD problems (even though mine designment may only influence a little) is because I have some family members and friends that suffered from it before. That’s why I thought maybe I could do something to help them. This project is mainly an extension of the Arduino Paper Piano, few changes I’ve done first is the appearance and the whole thing’s texture, another will be the sponge in front of where your fingers will put while playing the music. The music is more relaxing than just the pitch getting higher from C3 to C4. In fact, all these changes all improves the project to look more charming and may help the OCD people to relax and think of nothing.

Supplies

Male-to-male jumper wires
Breadboard
Arduino Uno or Arduino Leonardo
Resistor 1M ohm
Speaker
Really thick cardboards
Paper boxes(cut them into large pieces)
Aluminum foil
Some decorating papers

Step 1: What Is Arduino?

Introduction: Arduino

Step 2: Downloading Arduino

download Arduino--windows

download Arduino---Mac book

Step 3: Capacitive Sensing

Capacitive touch sensing is a way of human touch sensing, that requires little or no force to activate. It may be used to sense human touch through more than a quarter of an inch of plastic, wood, ceramic or other insulating material (not any kind of metal though), enabling the sensor to be completely visually concealed.