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Old 02-09-2009, 11:49 PM   #28 (permalink)
2003protege
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Join Date: May 2008
Location: Austin
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Silver Bullet - '03 Protege LX
90 day: 39.39 mpg (US)

The Golden Turd - '01 Grand Caravan Sport
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OK! I made this diagram. Hopefully it will be pretty self-explanitory.

I plan on having two separate layers. The top layer will have a seven-segment number pattern in it (made out of mdf, cut on a scroll saw). The bottom layer will have holes drilled for the LEDs in a pattern that puts two LEDs under each segment of a number. The seven-segment number layer will be a bit thicker than the hole pattern layer and the whole assembly will be painted flat black in order to minimize glare. As mentioned I want to have a diffusing layer positioned in-between the hole-pattern and seven-segment layers. It might be as simple as a sheet of copy paper, but we'll see how bright these are in the daylight.

P.S. I forgot to mention that I also received my white on blue LCD screen and my binary-to-seven-segment ICs (74LS47's) in the mail today. THis project is gonna rock!
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