Choosing an AI recorder card: microphones, bone conduction, storage and battery life
Read the Gongdao AI recorder card specifications, assess audio capture, connectivity and storage, and identify dimensions and weight that need confirmation.
ENGINEERING INSIGHTS
Blog
Practical notes on wireless modules, embedded development, PCB engineering, manufacturing and connected-product delivery.
Choosing hardware for AI toys: story players, desktop pets and smart dolls
Plan AI toy hardware around voice, displays, enclosure design and connectivity, with tests for story players, desktop pets and smart dolls.
What can an AI electronic badge do? Bluetooth and ESP32-S3 versions compared
Compare DOIT electronic badges by media playback, AI conversations, voice cloning, knowledge bases and updates, then plan prototype tests.
Using Xiaozhi AI without Wi-Fi: switching AI-C5 between 4G and Wi-Fi
Check AI-C5 4G requirements, follow the documented button timing for network mode changes, and troubleshoot connectivity.
Changing a VB6824 wake phrase: update mode and customization
Use the DOIT AI-S3 dual-eye example to check VB6824 OTA requirements, enter update mode, choose a wake phrase and test the result.
Xiaozhi AI real-time interruption: device-side and server-side AEC
Use the DOIT AI-C5 example to understand interruption, device-side and server-side AEC, configuration requirements and testing.
How to connect Xiaozhi AI: SoftAP and BluFi provisioning
Follow the DOIT SoftAP and BluFi setup procedures, check Wi-Fi connection and device binding, and troubleshoot each stage.
Setting Up a Xiaozhi AI Dev Environment from Scratch: VSCode, ESP-IDF, and Your First Flash
Using the DOIT AI-01 dev board as an example, this guide walks through installing the development tools, wiring up the serial connection, building and flashing Hello World, and troubleshooting common issues.
How to Choose a Xiaozhi AI Dev Board: Comparing the DOIT C2, C3, S3, and C5 Options
Based on DOIT's hardware selection materials, this guide compares the C2, C3, S3, and C5 options across product form factor, display requirements, connectivity, and development deliverables.