Sound is a great way to communicate information to the user of a device. You can use sound to provide feedback for user actions like tapping a button, to alert the user when a background task such as a timer or a download has finished, and much more.
Both the ESP32 and the ESP8266 support audio playback. Some development boards, including the M5Stack FIRE, come with a speaker built in. If your board doesn’t include a speaker, you can attach one yourself. In this chapter, you’ll learn how to play sounds using an inexpensive speaker ...
