tecno4

This Arduino project “rickrolls” people when they open a box (see https://en.wikipedia.org/wiki/Rickrolling). Basically, this involves a surprise piezo rendition of the song “Never Gonna Give You Up” by Rick Astley that plays when the box is opened and pauses when the box is closed. When the box is reopened, the song picks up where it left off. While the song is playing, an LED blinks to the notes of the music, and the Serial monitor outputs the lyrics in time with the actual song. A potentiometer can be turned to adjust the volume of the music. A fun button also exists that, when pressed, makes the song get faster. It can be pressed a few more times to make the tempo get progressively faster until it loops back around to the original tempo.