I really miss LightSensor... as it has gone inactive. I would like to have a way to close buildings with redstone at night. So either you do a check for isNight or whatever, or you do a check for light above the lever (I could combine that with Lampstones easily). It shouldn't be too hard to make, but I can't code java, and don't intend to start right now... maybe this summer. So anyway, to summarise : -Light- or time-sensitive levers (sending or not redstone current)