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This seems like a very good idea. It can be a very inexpensive solution to people that aren't afraid to crack open their LCDs and do a bit of work.
Did you say it would be necessary to replace the existing backlight with these LED, or would the LEDs supplement the backlight already in?
Also, is it possible to control the brightness level like you do with a standard car's instrument panel? This is achieved using a variable resistor. If that is possible, would a variable resistor be used, or could PWM be used for more efficiency?
Last but not least, if it is indeed necessary to replace the backlight that comes with the LCD, would it be necessary to leave the LEDs on at all times to be able to view the monitor, or could they be turned off when lighting conditions are favorable (like at night)? Road Runner has a feature that allows you to select a "day" and "night" skin, and I'm assuming brightness level has something to do with that.
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Self proclaimed environmentalist.
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