微信机器人功能升级：群标签云统计、个人发言分析、活跃度可视化，并接入ElasticSearch和Kibana实现实时监控，算法从TF升级到TF-IDF。
Articles in the Computing category
能理解聊天记录的微信机器人
探讨聊天机器人的核心价值：利用聊天记录做跨群转发、主题归并、脉络梳理和统计分析，让碎片化信息变得有组织，提供比单纯推送更独特的价值。
DIY Smart Air Purifier with Quality Monitoring using a Raspberry Pi
Build a Raspberry Pi-based air quality monitoring system with gas and dust sensors, plus a DIY air purifier using a box fan and MERV 13 filter.
Some experiments about thermal cameras
Using a FLIR One thermal camera to identify home energy leaks: window drafts, heater inefficiencies, and door gaps. Practical DIY approach to thermal debugging.
Update on the IFTTT Delay API
The IFTTT delay API now supports passing extra POST parameters (Value1, Value2, Value3), enabling more complex automation recipes like delayed blog cross-posting and smart home scene scheduling.