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Originally Posted by mbates14
You know, I just thought of some crazy idea yesterday.
Use an array of UV LEDs for the light source, but on the disk, instead of holes for scanning, use a UV pen, and and mark where the holes supposed to be, so in the dark, its got a cool looking effect.  |
Then I have to look on the back side of the disk. But why not using UV LEDs with holes in the disk and put a phosphored screen before the disk?