raven

A 100-day challenge exploring IoT and embedded systems using ESP32, ESP8266, and Raspberry Pi Pico with MicroPython. Each day covers a new sensor or module with complete code, circuit diagram, and explanation.

High-performance AI pipeline engine with a C++ core and 50+ Python-extensible nodes. Build, debug, and scale LLM workflows with 13+ model providers, 8+ vector databases, and agent orchestration, all from your IDE. Includes VS Code extension, TypeScript/Python SDKs, and Docker deployment.

Curated list of project-based tutorials

Open-source iOS compatibility layer for Diablo II: Resurrected with the Reign of the Warlock expansion. Runs your own Switch copy natively on iPhone and iPad — full touch controls, 60 fps, new endgame modes. Bring your own game files. 开源的《暗黑破坏神 II：狱火重生》术士君临 iOS 兼容层

:books: 技术面试必备基础知识、Leetcode、计算机操作系统、计算机网络、系统设计