Let me introduce another simple microcontroller-based do-it-yourself circuit that detects motion and excites a light source in a flash. The “snooper” here is an ordinary passive infrared (PIR) motion ...

Arduino WS2812B LED灯带可单独控制每个LED的亮度和颜色，提供了一种简单而酷炫的LED效果体验。 WS2812B LED灯带以串联方式组合LED灯，内嵌有放大驱动电路、振荡器和电压可编程控制芯片，可寻址，可通过一个单线接口通讯。这意味着，用户可通过Arduino板子上的一个 ...

Here is one simple circuit of a general-purpose white LED security light with Passive Infrared (PIR) Motion sensing mechanism. At the heart of the circuit is a PIR sensor module SB0061. SB0061 is a ...