编者按：这是一个用LED灯装饰的餐桌,LED由于体积很小,开灯后散热也非常少,最小的魔块灯可以安装在尺寸很小的缝隙里,作者详细的介绍了制作过程.这种工艺不光可以用在餐桌上,也可以在一些娱乐场所等空间的的墙面,地面,固定家具上大胆使用,例如用做地面藏光,可以将玻璃与原地面的缝隙缩小到一厘米多,这个厚度少于铺地的水泥沙浆层,所以就不用为做地面藏光而加高整个地平.

原文地址：http://www.evilmadscientist.com/article.php/LedDiningTableStory

This is our dining table. We built it because we needed a new dining table, and I guess we're just that kind of people. It has a frosted glass top lit by 448 multicolored LEDs that respond, in a complex and gentle fashion, to input generated by motion above the table while we eat.

We showed it off at the Maker Faire. Click on the photo to get to see some other photos of the table construction. Lenore was interviewed about the table at the faire, see Lenore's CNET interview.

The LEDs are controlled by a 16-node 1-D analog computer network. Each node has an amplified photodiode that senses changes in ambient light above its region of the table. An analog integrator (memory) averages that signal along with input from its neighbors, and the resulting signal is used to drive one of two strands of 14 LEDs (depending on polarity) with intensity that depends on the integrated value. Each node consists of one photodiode, one quad op-amp IC, nine resistors, and four capacitors that we hand-soldered onto a tiny piece of plain perfboard. We mounted the nodes to sheets of masonite pegboard, such that the output LEDs fit through the holes. After (a dozen or so evenings of) soldering, the pegboard with its electronics and a power supply was set into a stained-wood table frame that we made out of birch and poplar, and topped with glass recycled from a desk top.