Arduino DIY Piano

This project is a hands-on exploration of DIY electronics, combining simple materials with basic circuitry to create an interactive three-key piano powered by an Arduino Uno R3. The piano is constructed from folded cardboard with aluminum tape acting as conductive touch sensors. When a key is pressed, the Arduino triggers a corresponding note (C, D, or E) through a piezo speaker while also illuminating an LED to provide visual feedback. The system is programmed to display key presses in a serial monitor, enhancing user interaction and debugging. Designed as a playful learning tool, it introduces basic coding, circuitry, and music theory, making it a fun and educational project. Users can experiment by playing simple melodies like "Mary Had a Little Lamb" while observing synchronized light and sound responses.