七彩LED指示灯，通电后，按开关开启后，每隔四秒钟LED闪一次，且每次闪的颜色可以变化可以组合出多种颜色循环。七彩LED灯用红绿蓝三色的共阳LED灯，驱动直接用78P153的I/0。-Colorful LED lights, electricity, press switch to open, the LED flash every four seconds once, and each flash can change the color of a variety of colors can