LED驱动板ED控制
　　　　　　 单键控制LED程序,按一下按键,灯打开,电流为700MA，5分钟后，电流降为260MA，再20分钟后，电流降为130MA；
　　　　　　再按一下按键,电流持续130MA;　　再按一下按键灯关闭(LED drive board
ED drive board ED control
Single key control LED program, press a button, the light is open, the current is 700MA, 5 minutes later, the current down to 260MA, and then 20 minutes later, the current down to 130MA;
Press the button again, the current continues 130MA; then press the button to turn off)