The CH34X family comprises widely used USB‑to‑serial chips manufactured by WCH (WinChipHead), commonly integrated into generic UNO R3, ESP8266, and ESP32 development boards.
Overview
The Lonely Binary Audio Shield harnesses the ESP32’s DAC2 channel on GPIO26 for digital-to-analog audio conversion, featuring an 8-bit DAC capable of outputting 256 distinct voltage levels. This module includes a standard 3.5mm audio jack, enabling connectivity with headphones or external speakers. Ideal for constructing your own internet-enabled Wi-Fi radio or adding sound functionality to any ESP32-based project, this shield offers a user-friendly interface for integrating audio output.
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Resources
What’s in the Box
- 1 x ESP32 Audio Shield

Audio ESP32 Shield
$15.00
Tutorial
HC-05 Bluetooth Module and Arduino Beginner Tutorial
This is a basic example to get you start with HC-05 Bluetooth Module. Depending on your specific requirements and the functionality you want, you may need to expand and modify the sketch accordingly.
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