[AVR] Help with led message board

codename25 · Feb 26, 2015

Hi,
I'm building an led display board. I'm confused about the type of Led used in display board. Other than high bright led which type of led should i use? Should i use the the transparent (glass) type or the colored(diffused) one? i'm planning to give red led. Thanks in advance.

FvM · Feb 26, 2015

You'll primarly look for luminous intensity and viewing angle of the LEDs. LEDs with diffused package have usually a wider viewing angle and lower luminous intensity.

Besides the effect of different viewing angle, there's a large range between low efficiency standard LEDs and super bright LEDs.

codename25 · Feb 27, 2015

Thanks fvm, so it is preferable to use diffused type over glass type. I have another doubt does high before led also have high intensity?

kam1787 · Feb 27, 2015

codename25 said:
............does high before led also have high intensity?

I do not understand. Did you miss a word? or make a typo?

codename25 · Feb 27, 2015

Yeah. It's high bright led not " high before led".

kam1787 · Feb 27, 2015

That makes more sense, but I think you really need to clarify on what the terms means;

http://en.wikipedia.org/wiki/Luminous_intensity
http://en.wikipedia.org/wiki/Brightness
**broken link removed**
and this might help
http://www.jameco.com/Jameco/workshop/techtip/light-brightness-intensity.html

[AVR] Help with led message board

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