smart controller With LED turn on control 2004 Version

Added a small function which is LED backgroud light control circuit to smart controller , with shorting the pins to decide the LED turn on all the time or turn on 30 seconds and than turn off automaticly.IF you used to start the printing jobs at night and get the parts at the next morning , that means with the new modification LCD back light will not annoying you any more ,you can make the time of light turn on longer or shorter by adjust the TRIMM R4 100K form 10s to 2mins. Hope you will like that .

This controller is 100% compaitble with original design .That mean you can use the original RAMPS adpter.

  在原来的版本上添加了一项新功能，就是背光控制。可以通过跳线来控制背光常亮还是自动点亮30秒。通过调整R4 100k的阻值。可以控制背光时间的长短。有了这个功能，可以给那些晚上开始打印作业到了明早收割的朋友们不被灯光污染的功能。    这个板是100%兼容原设计的。可以使用原装的适配器和数据线。