RGB表示红色绿色蓝色的灯，通过三种灯光的顺序点亮可以实现彩色跑马灯的功能，里面加入了小小的暂停，如果光强比例合适的话，还可以发出白光-RGB red green and blue light that, by the order of three light colored marquees light up function can be achieved, which added a little pause, if the intensity ratio of the right wor