Bluetooth speaker
Neil Cameron · Apress eBooks · 2020
A Bluetooth speaker complements the Internet radio in Chapter 1, the MP3 player in Chapter 5, and the WS2812 5050 RGB LED strip that responds to sound in Chapter 4. The Bluetooth stereo audio receiver module with the PAM8403 class-D audio amplifier does not require an ESP8266 or ESP32 microcontroller, but the project merits incorporation in the book because it's fun and a straightforward build. After the Bluetooth stereo audio receiver module is switched on with the announcement "Bluetooth mode: the Bluetooth device is ready to pair," the mobile phone or Android tablet with Bluetooth communication is connected to the Bluetooth stereo audio receiver module, followed by another announcement "The Bluetooth device is connected successfully."