当环境光线变亮时，又自动关闭灯带。 连接 Arduino ↔ LDR 分压 ↔ 继电器模块 ↔ 12V 灯带。 热熔胶枪（可选） 用于固定 LDR 位置或整理线材，提升结构可靠性。 A0 点的电压随光照变化而变化，Arduino 通过 analogRead(A0) 读到 0–1023 之间的数值，即可反映当前亮度。 为了安全与隔离，LED 灯带不直接由 Arduino 供电，而是： 灯带的 正极( ...

前几天发布了开源4.3寸触摸屏的文章，里面有WIFI获取时间和天气预报相关的功能，今天就来介绍一下这个功能是怎样实现的。 1.底层驱动 首先，硬件上，单片机通过串口AT指令访问WIFI模块（ESP8266）。具体AT指令怎样写，可以参考之前的文章《单片机裸机环境下 ...

Few devices have hit the hacker/maker word with quite as large a bang as the ESP8266. [Brian] first reported a new $5 WiFi module back in August. Since then there have been an explosion of awesome ...

In August of 2014, something new started showing up in the markets of Shenzhen, the hi-tech area of China where the majority of the world’s electronics components are made. This is the ESP8266, a WiFi ...

Those of you that enjoy using the Arduino platform to build electronic projects, a new WifiDuino device which has this week launched over on the Indiegogo crowd funding website, ma be worth more ...