Light Sensor

This is a machine I created that will activate lights when you enter a room and shut them off when you leave. It does have some bugs, but since I am an amateur at redstone, I think I did pretty good. Basically, how it works is that if you step on the outside pressure plate first, it thinks you're entering and turns the lights on. Likewise, the inside pressure plate turns the lights off. Of course, it could misdetect you, but if you walk from the outside to the room without stopping, it should work fine.