5b874bc3ad
* Initial plan * Fix LVGL object deletion issue in SetChatMessage - Refresh child_count after deleting first_child to avoid using stale count - Add lv_obj_is_valid() checks before accessing deleted objects - Prevent duplicate deletion by refreshing child_count before system message deletion - Ensures last_child validation before scrolling to it Co-authored-by: 78 <4488133+78@users.noreply.github.com> * Address code review feedback on LVGL object deletion fix - Move last_child retrieval after deletion to avoid stale pointer - Add child_count > 0 check before scrolling to prevent edge case issues - Add lv_obj_is_valid() check for last_bubble for consistency Co-authored-by: 78 <4488133+78@users.noreply.github.com> * Final review: LVGL object deletion fix complete Co-authored-by: 78 <4488133+78@users.noreply.github.com> * Remove std::thread wrappers in display callbacks to fix thread safety Remove detached threads that were calling SetChatMessage from download/upgrade progress callbacks. The DisplayLockGuard mutex already provides thread safety, so we can call display methods directly from the callback thread without spawning additional threads, which were causing race conditions. Co-authored-by: 78 <4488133+78@users.noreply.github.com> * Use Application::Schedule() for display updates in callbacks Instead of calling SetChatMessage directly from download/upgrade progress callbacks, queue the updates using Application::Schedule(). This prevents blocking the network receive task and avoids potential UART FIFO overflow issues with 4G modems. The scheduled callbacks execute in the main task thread, maintaining proper thread safety. Co-authored-by: 78 <4488133+78@users.noreply.github.com> --------- Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com> Co-authored-by: 78 <4488133+78@users.noreply.github.com>
An MCP-based Chatbot
Introduction
👉 Handcraft your AI girlfriend, beginner's guide【bilibili】
As a voice interaction entry, the XiaoZhi AI chatbot leverages the AI capabilities of large models like Qwen / DeepSeek, and achieves multi-terminal control via the MCP protocol.
Version Notes
The current v2 version is incompatible with the v1 partition table, so it is not possible to upgrade from v1 to v2 via OTA. For partition table details, see partitions/v2/README.md.
All hardware running v1 can be upgraded to v2 by manually flashing the firmware.
The stable version of v1 is 1.9.2. You can switch to v1 by running git checkout v1. The v1 branch will be maintained until February 2026.
Features Implemented
- Wi-Fi / ML307 Cat.1 4G
- Offline voice wake-up ESP-SR
- Supports two communication protocols (Websocket or MQTT+UDP)
- Uses OPUS audio codec
- Voice interaction based on streaming ASR + LLM + TTS architecture
- Speaker recognition, identifies the current speaker 3D Speaker
- OLED / LCD display, supports emoji display
- Battery display and power management
- Multi-language support (Chinese, English, Japanese)
- Supports ESP32-C3, ESP32-S3, ESP32-P4 chip platforms
- Device-side MCP for device control (Speaker, LED, Servo, GPIO, etc.)
- Cloud-side MCP to extend large model capabilities (smart home control, PC desktop operation, knowledge search, email, etc.)
- Customizable wake words, fonts, emojis, and chat backgrounds with online web-based editing (Custom Assets Generator)
Hardware
Breadboard DIY Practice
See the Feishu document tutorial:
👉 "XiaoZhi AI Chatbot Encyclopedia"
Breadboard demo:
Supports 70+ Open Source Hardware (Partial List)
- LiChuang ESP32-S3 Development Board
- Espressif ESP32-S3-BOX3
- M5Stack CoreS3
- M5Stack AtomS3R + Echo Base
- Magic Button 2.4
- Waveshare ESP32-S3-Touch-AMOLED-1.8
- LILYGO T-Circle-S3
- XiaGe Mini C3
- CuiCan AI Pendant
- WMnologo-Xingzhi-1.54TFT
- SenseCAP Watcher
- ESP-HI Low Cost Robot Dog
Software
Firmware Flashing
For beginners, it is recommended to use the firmware that can be flashed without setting up a development environment.
The firmware connects to the official xiaozhi.me server by default. Personal users can register an account to use the Qwen real-time model for free.
👉 Beginner's Firmware Flashing Guide
Development Environment
- Cursor or VSCode
- Install ESP-IDF plugin, select SDK version 5.4 or above
- Linux is better than Windows for faster compilation and fewer driver issues
- This project uses Google C++ code style, please ensure compliance when submitting code
Developer Documentation
- Custom Board Guide - Learn how to create custom boards for XiaoZhi AI
- MCP Protocol IoT Control Usage - Learn how to control IoT devices via MCP protocol
- MCP Protocol Interaction Flow - Device-side MCP protocol implementation
- MQTT + UDP Hybrid Communication Protocol Document
- A detailed WebSocket communication protocol document
Large Model Configuration
If you already have a XiaoZhi AI chatbot device and have connected to the official server, you can log in to the xiaozhi.me console for configuration.
👉 Backend Operation Video Tutorial (Old Interface)
Related Open Source Projects
For server deployment on personal computers, refer to the following open-source projects:
- xinnan-tech/xiaozhi-esp32-server Python server
- joey-zhou/xiaozhi-esp32-server-java Java server
- AnimeAIChat/xiaozhi-server-go Golang server
- hackers365/xiaozhi-esp32-server-golang Golang server
Other client projects using the XiaoZhi communication protocol:
- huangjunsen0406/py-xiaozhi Python client
- TOM88812/xiaozhi-android-client Android client
- 100askTeam/xiaozhi-linux Linux client by 100ask
- 78/xiaozhi-sf32 Bluetooth chip firmware by Sichuan
- QuecPython/solution-xiaozhiAI QuecPython firmware by Quectel
Custom Assets Tools:
- 78/xiaozhi-assets-generator Custom Assets Generator (Wake words, fonts, emojis, backgrounds)
About the Project
This is an open-source ESP32 project, released under the MIT license, allowing anyone to use it for free, including for commercial purposes.
We hope this project helps everyone understand AI hardware development and apply rapidly evolving large language models to real hardware devices.
If you have any ideas or suggestions, please feel free to raise Issues or join our Discord or QQ group: 994694848