DIY Piano with Arduino

This is a very simple project done by using Arduino Uno. Materials (ONLY very cheap materials are needed): - pencil - A4 paper - paper clip - resistor 1M ohm - speaker - male-to-male jumper wires - breadboard - Arduino Uno board *Of course the Arduino Uno board is not cheap, but it is reusable for other projects too. So it is worth to own one. This Piano is miracle. There are no button/switch on it. Just a simple piano keyboard draw on a paper. Once you touch the keyboard, it will produce a tone. It works like a touchscreen phone!!! ^o^ Concept used: Capacitive Sensor For better understanding: Coding/Schematic: Thanks for the reading, hope the information will get help for those interested with this project. =D