LED Umbrella
Dave made a really nice LED Umbrella… Source, schematic, laser files and more all included! via NYCR.
Ever wanted to grow grass in your cubicle? I did. But the grass kept dying. So I made a custom grow light out of LEDs, and now I have the nicest lawn on my block. Build photos, schematic, sourcecode, etc. are on the project page.
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Original post by Phillip Torrone