About XIAOZHI AI Voice Assistant Project
A compact ESP32-S3 based AI Voice Assistant powered by XIAOZHI AI firmware.
Designed for hands-free voice interaction, AI question answering, document intelligence, and smart-home control— all without writing any code.
Available as a ready-to-use device or open hardware platform for further customization.
Product Overview
- Voice-controlled AI assistant with OLED display
- Powered by XIAOZHI AI cloud firmware
- No programming or firmware development required
- Supports multi-language voice interaction
- Can be integrated with Home Assistant
- Battery powered & portable
- Ideal for education, AI experimentation, and smart-home projects
Key Features
- AI Voice Interaction – Ask questions and get instant spoken responses
- OLED Display Output – Text responses with emoji expressions
- PDF Knowledge Upload – Upload documents and query them using voice
- Multi-Language Support – Supports English, Hindi, and more
- Smart Home Control – Control devices using Home Assistant
- Low Latency Responses – Fast AI response time
- No Code Required – Fully configurable using XIAOZHI platform
- Expandable Hardware – Open design for custom firmware and add-ons
Technical Specifications
| Parameter | Specification |
|---|---|
| Microcontroller | ESP32-S3 (N16R8) |
| Flash Memory | 16MB |
| PSRAM | 8MB |
| Microphone | INMP441 Digital I2S Microphone |
| Audio Amplifier | MAX98357 |
| Speaker | 8Ω 2W Cavity Speaker |
| Display | 0.96-inch OLED |
| Buttons | Record, Replay, Volume Up, Volume Down |
| LED | RGB LED |
| USB Interface | Type-C |
| USB-UART | CH340C |
| Battery Charging | TP4056 |
| Power Input | USB Type-C / Li-ion Battery |
| Enclosure | Optional 3D Printed Case |
Hardware Overview
Important Notes
- The project will come fully programmed but user need to connect it with XIAOZHI platform by themselves
- Display font support may vary for certain languages.
- Battery not included for International Shipping
- Home Assistant setup required for smart-home control
Important Links
The Firmware Files & Schematic are uploaded in our GitHub Repository – https://github.com/techiesms/XIAOZHI-AI-Voice-Assistant
 Complete Video Guide – Setup, Usage & Customization
A detailed step-by-step video guide is available that walks you through everything required to use this product, from hardware understanding to final AI interaction.
This video is highly recommended for all the buyers of this project
Verified owner Shivas R Shivu (verified owner) –
The Xiaozhi AI Assistant website presents a very innovative and impressive product. The idea of creating a low-cost AI voice assistant using ESP32 is truly creative and useful, especially for students and beginners. The website clearly explains the features and makes it easy to understand how the product works.
This is a must-buy product for anyone interested in AI, electronics, or smart projects. It provides a great opportunity to learn and build your own assistant at a much lower cost compared to other devices. Overall, it is a highly innovative product with great potential for learning .