IoT Development for ESP32 and ESP8266 with JavaScript: A Practical Guide to XS and the Moddable SDK

© Peter Hoddie and Lizzie Prader 2020

P. Hoddie, L. PraderIoT Development for ESP32 and ESP8266 with JavaScripthttps://doi.org/10.1007/978-1-4842-5070-9_7

7. Audio

Peter Hoddie¹  and Lizzie Prader¹

(1)

Menlo Park, CA, USA

 

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 ...