最近开始有一些安防监控方面的需求。看了一圈市场上现有的产品有三个顾虑，第一是它们的数据都要从互联网上走一 …
DIY Smart Air Purifier with Quality Monitoring using a Raspberry Pi
Indoor air can be much more polluted than the outdoor air. There are some "smart air purifier" like Dyson Air Purifier on the market, but they are usually very pricey, and lack APIs for customization. That's why I used a Raspberry Pi to build a smart air monitoring system, which …
关于树莓派测量空气质量的一些实验
现在所说的"智能家居"，其实更多的是"遥控家具"。正如以前的文里面提到的，我个人认为智能家居需要三个阶段，遥控化，自动 …
[智能家居] 家庭灯光的智能控制
智能家居最容易入手的一环就是智能灯光。从飞利浦的hue，到wemo的智能开关，到小米的智能灯泡，每家的技术都不一样，但基本都能实现 …
Update on the IFTTT Delay API
After I released the IFTTT delay API, there was some interesting discussion going on in the comments. At the same time, I also found the delay API is still too simple. It still couldn't pass any information other than the event name. And this caused troubles in the applications of …