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AI Voice Assistant Module, ESP32 S3, Audio, Xiaozhi
Compact solution for projects with AI voice assistant and display, based on a dual-core ESP32-S3 at 240 MHz with 16MB Flash and 8MB PSRAM for fast response. Includes a 1.54" LCD, integrated microphone, and ES8311 audio codec for natural conversations with an external speaker. Offers 2.4 GHz Wi-Fi and Bluetooth 5 LE, and can be easily programmed via USB-C in Arduino IDE, ESP-IDF, or MicroPython.
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The Xiaozhi ESP32-S3 AI module is a compact, all-in-one solution for developing smart devices with voice interaction and visual display, intended for electronics enthusiasts, developers, and hobbyists who want to explore the world of AI assistants on affordable hardware.
At its core is the dual-core ESP32-S3 chip running at 240 MHz, paired with 16MB Flash and 8MB PSRAM, providing generous resources for running AI applications with fast response times. 2.4 GHz Wi-Fi and Bluetooth 5 LE connectivity ensure easy integration into smart home projects, personal assistants, or educational devices.
The module integrates the ES8311 audio codec, which handles both sound capture through the built-in microphone and audio playback to an external speaker connected via the PH2.0 connector, enabling natural conversations with the chosen AI assistant.
It supports switching between popular AI models such as Qwen, DeepSeek, and Doubao through the xiaozhi.me platform, offering high flexibility for various use cases. The source code can also be customized for use with the API of other platforms such as ChatGPT.
The board includes dedicated buttons for BOOT, reset, WiFi rewiring, volume control (+ / -), a 3.7V Li-Ion battery management circuit with PH2.0 connector, and programming and charging are conveniently done through the USB Type-C port.
The compact 45.5 x 45.5 mm dimensions make the module easy to integrate into enclosures or custom projects. It is compatible with ESP32-S3 platforms, can be programmed via Arduino IDE, ESP-IDF, or MicroPython, and integrates natively with the xiaozhi.me ecosystem.
The module comes from the factory in Chinese and requires flashing a new firmware set to English or Romanian, according to the instructions below.
Specifications:
Chip: Dual-core ESP32-S3 240 MHz
SRAM memory: 512KB
PSRAM memory: 8MB
Flash memory: 16MB
Connectivity: 2.4 GHz Wi-Fi, Bluetooth 5 LE
Serial driver: CH340X
Audio codec: ES8311
Microphone: Built-in
Microphone driver: INMP441
Audio output: External speaker, PH2.0 connector
Amplifier: MAX98357
Battery: 3.7V Li-Ion, PH2.0 connector
Battery charging controller: TP5400H
USB: Type-C (programming and charging)
Buttons: BOOT, Volume +, Volume -, reset, WiFi rewiring
Supported AI models: Qwen, DeepSeek, Doubao
Platform: xiaozhi.me
IDE compatibility: Arduino IDE, ESP-IDF, MicroPython
Dimensions: 45.5 x 45.5 mm
Layout:
Usage:
Xiaozhi AI firmware (bread-compact-wifi)
What do you need?
- ESP32-S3 board
- Good-quality USB Type-C cable (important!)
- Windows PC
- xiaozhi.me account
Step 1 - Install tools
In CMD (Command Prompt):
Python:
Download from https://python.org
During installation, check "Add Python to PATH"
esptool:
| pip install esptool |
ESP-IDF:
Download from https://dl.espressif.com/dl/esp-idf/
Install version v5.5.x
Step 2 - Download source code
In ESP-IDF PowerShell:
|
git clone https://github.com/78/xiaozhi-esp32.git folder-path\xiaozhi-bread |
The command downloads directly into the folder where PowerShell is running. We add the folder path to change this.
Step 3 - Build
In ESP-IDF PowerShell (from the Start Menu):
Navigate to the downloaded folder:
| cd folder-path\xiaozhi-bread |
Run in order:
| $env:IDF_COMPONENT_MANAGER=1 |
| idf.py set-target esp32s3 |
Wait a few minutes for it to finish. When it is done, continue with the command:
| idf.py menuconfig |
In menuconfig:
Xiaozhi Assistant → Board Type → select lc-s3-wifi-1.54tft
Xiaozhi Assistant → Default Language → select English or Romanian
Press S to save → Q to exit
Build:
| idf.py build |
The first time it takes 10–15 minutes.
Step 4 - Flashing
In ESP-IDF PowerShell:
- Disconnect the board
- Hold down the BOOT button on the board
- Connect the USB cable to the PC
- Release BOOT after 2 seconds
Run:
| idf.py -p COM3 flash |
(replace COM3 with your port from Device Manager)
Step 5 - Configure xiaozhi.me
Restart the board normally (without BOOT)
On your phone, connect to the ESP’s WiFi
Open the browser at http://192.168.4.1 (or the address shown on the screen). Normally the browser opens automatically.
Select your WiFi network and enter the password
Go to https://xiaozhi.me and register
Click Add Device → enter the 6-digit code shown on the board’s screen
Step 6 - Configure assistant
On xiaozhi.me:
Configure Character
Dialogue Language → Romanian
Voice Role → Romanian voice
Role Introduction → describe how you want the assistant to behave
Save
Usage:
Press BOOT once → the assistant is online, listens, and responds. To exit conversation mode, press BOOT again.
Dimension diagram:
Produs destinat utilizarii in proiecte electronice, automatizari, prototipare, educatie si cercetare.
Produsul trebuie utilizat numai conform specificatiilor tehnice mentionate in descriere si/sau in documentatia produsului.
Avertismente generale de siguranta:
Nu utilizati produsul la tensiuni, curenti sau temperaturi peste valorile specificate.
Montajul si conectarea trebuie realizate de persoane cu cunostinte tehnice minime in domeniul electric/electronic.
Evitati scurtcircuitele, inversarea polaritatii si conectarea gresita a alimentarii.
Nu lasati produsul alimentat nesupravegheat in timpul testelor.
Produsul nu este jucarie si nu este destinat copiilor.
Pentru modulele electronice, se recomanda utilizarea in carcase, panouri sau montaje protejate, dupa caz.
Identificare produs:
Denumirea produsului, codul/SKU-ul si caracteristicile tehnice sunt mentionate in pagina produsului si/sau pe eticheta ambalajului.
Producator / Importator / Distribuitor:
Sigmanortec S.R.L.
Calea Bucuresti nr. 9, Targu Jiu, Gorj, Romania
E-mail: [email protected]
Website: www.sigmanortec.ro
Persoana responsabila in UE:
Sigmanortec S.R.L.
Calea Bucuresti nr. 9, Targu Jiu, Gorj, Romania
E-mail: [email protected]
Documentatie si siguranta:
Pentru informatii suplimentare, fise tehnice, declaratii de conformitate sau instructiuni, ne puteti contacta la [email protected].
