Tutorials/Night lights (Lights activated at night)

With the new Daylight Detector, it is possible to make a system of lights which turn on only at night (Snapshot 13w01a or higher needed to build)

Resources required
-The raw materials of which are: - 4 Redstone - 1 Glowstone - Per block. (See Redstone lamp) -The raw materials of which are: - 3 glass - 3 wood slabs - 3 Nether Quartz
 * Around 1/2 stack of Redstone (Depends on size)
 * 3 redstone lamps (Depends on size again)
 * Material of housing (Stone, wood, whatever your house is made of.)
 * 1 Daylight detector

Making the circuit

 * Place the detector in an appropriate place, near your house.
 * Place your lamps in an outer wall (They must be visible from inside!)
 * Connect the detector to a NOT Gate (If you're confused, check the picture), for best effect have a distance of 5-6 blocks (Again, if you don't understand, check the picture).
 * Connect the NOT gate to the lamps.


 * *It's done!*

Uses
This circuit can be used for many things, including
 * Turn on lights inside/outside, for decoration
 * Turn on in-ground "street lights" to prevent mobs from spawning in a certain area
 * Activate defenses to keep mobs out of you house (For example, you could make a drawbridge that retracts at night, or something to automatically kill mobs outside your door in the morning)
 * Use an "AND" gate to create a circuit that will only work at day, or one that will only work at night

Gallery
Please feel free to expand this!