Due to the epidemic, I spent more time at home than usual in the past six months. It is inevitable that a person would be bored at home, so I made an audio player with ESP32 to pass the time.

ESP32 can be used as an independent system to run applications, just plug in the cable, power the device, and program it. With downloading different programs, the player can realize SD card playing music function, Internet radio function, and music alarm clock function.