Circuitrocks Project Name: "Arduino Melody Player with Speaker" Used: In this project, the Arduino generates specific frequencies that correspond to musical notes. Allowing you to bring your project to life with sound. The Arduino plays each note for a duration specified by another array, which determines the length of each note. A short delay between notes ensures that they are distinct and do not overlap, creating a clear and pleasant melody. The use of basic concepts such as arrays and loops.