I use an arduino I/O board to connect the input as a light sensor, the output as different color LEDs which can perform fading effect through different amount of power provided.

• 变成习惯性的资讯集中点后，一但消化完全部的订阅(当然大多是随意翻看，只挑有趣的标题)，不管接下来是不是有要紧的工作要做，总是有一股空虚感。