ESP32-A1S WiFi & Bluetooth Serial Audio Development Board

Take your embedded audio and IoT projects to the next level with the ESP32-A1S WiFi & Bluetooth Serial Audio Development Board. Built around the powerful ESP32-A1S chip, this module combines dual-mode wireless connectivity — 802.11 b/g/n WiFi and Bluetooth Classic/BLE — with integrated audio codec capabilities, making it an exceptional choice for smart speakers, voice assistants, wireless audio streaming, and IoT prototyping.

Whether you're an electronics hobbyist, a professional engineer, or a maker exploring audio-enabled microcontroller projects, this board delivers the performance and flexibility you need in one compact, versatile package.

Key Features

Dual Wireless Connectivity: Built-in WiFi (802.11 b/g/n) and Bluetooth (Classic + BLE) for seamless wireless communication
Integrated Audio Codec: Onboard serial audio support via the ESP32-A1S chip for high-quality audio input/output processing
ESP32-A1S Module: Combines the processing power of the ESP32 with an audio codec, saving board space and simplifying design
Development Board Form Factor: Breadboard-friendly design with accessible GPIO, I2S, UART, SPI, and I2C interfaces
Versatile Application: Ideal for smart home audio, voice recognition, wireless speakers, IoT sensors, and computer peripherals
Customizable & Programmable: Fully compatible with the Arduino IDE, ESP-IDF, and MicroPython environments
Brand New Condition: Delivered fresh and ready for immediate integration into your project

Specifications

Module: ESP32-A1S
Connectivity: WiFi 802.11 b/g/n, Bluetooth Classic & BLE
Type: Development Board / Module
Application: Computer, IoT, Audio Projects
Condition: New
Customizable: Yes
Quantity Options: Available as 1PC, 3PCS, 5PCS, or 10PCS

What You Can Build

The ESP32-A1S development board is a go-to module for a wide range of creative and professional builds, including:

Wireless Bluetooth & WiFi audio speakers
Voice-controlled smart home devices
Streaming audio receivers and transmitters
IoT-connected microphones and audio sensors
Computer peripheral modules and serial communication bridges

Pair It With Your Project

Looking to complete your electronics build? Check out these related items from our store:

Round Aluminum Wire 1mm–3mm | DIY Jewelry Making Wire — great for custom enclosures and wiring setups
4/6mm CCB Flat Round Spacer Beads DIY Jewelry Making 100-200pcs — useful for crafting custom project housings and assemblies

Learn more: EPA guidance on lithium-ion battery handling

Frequently Asked Questions

Q: What is the ESP32-A1S and what makes this development board unique?

A: The ESP32-A1S is a powerful system-on-chip that integrates the ESP32 dual-core processor with an onboard audio codec. This development board breaks out its full capabilities — including WiFi, Bluetooth, and serial audio — onto an accessible platform perfect for embedded audio and IoT projects without the need for external audio chips.

Q: What programming environments are compatible with the ESP32-A1S development board?

A: This board is fully compatible with the Arduino IDE, Espressif's ESP-IDF framework, and MicroPython. A wide variety of open-source libraries and example sketches are available from the ESP32 community, making it easy to get started quickly regardless of your experience level.

Q: Can I buy multiple units, and are bulk quantity options available?

A: Yes! This product is available in quantities of 1PC, 3PCS, 5PCS, and 10PCS so you can stock up for prototyping, production runs, or classroom use. Simply select your preferred quantity before adding to cart.

Q: Is this module suitable for beginner electronics makers?

A: While the ESP32-A1S is a feature-rich chip, its development board form factor and compatibility with user-friendly platforms like Arduino IDE and MicroPython make it accessible to intermediate makers and beginners who have some basic experience with microcontrollers and programming.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.