最近搞了场说走就走的旅游。周六听说下周二阿拉斯加极光爆发，查了一下月相和天气都非常完美，果断周六订机票，周日 …
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 …
Some experiments about thermal cameras
The motivation is, it's getting cold in Seattle. And the condo we live reached an extent that we cannot bear any more. In addition to buying more (and more) heaters, I also began to think about where the energy went, because our monitoring system shows that the new heaters brought …
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