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Old 7th July 2008, 03:18 AM   #1
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Default Where do i find an LED Bar?

Hey everyone, I am looking at doing a project like this:

http://www.youritronics.com/led-bar-...trum-analyzer/

but i have no idea where to find a LED bar like that. Anyone have any ideas? Thank you in advance.
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Old 7th July 2008, 04:45 AM   #2
Chartal is offline Chartal  Canada
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Hi.

Hint -->> Digi-key, search result for "Led Bar Graph"
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Old 7th July 2008, 12:35 PM   #3
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Hey, thanks for the reply. I searched newark before, but not digi-key. Anyway, the best i could find on digi-key is something like this:

http://www.lumex.com/product.aspx?id=646

But thats only 14 LEDs high (instead of 20). Would i have to get a bunch of them and mount them together?

Also, wouldn't the voltage ratings and other varying specs of different LEDs change the circuit depending on what i picked?

Sorry if this is obvious stuff... i'm a noob at this stuff. Thanks again for your help and patience!
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Old 7th July 2008, 12:41 PM   #4
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"But thats only 14 LEDs high (instead of 20). Would i have to get a bunch of them and mount them together?"

--> Yes, you would probably get two 10-segment LEDs for each column of the spectrum analyzer.
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Old 7th July 2008, 12:48 PM   #5
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Ok thanks again. Taking a closer look at the spec, i see that it says that "any LED type will work." I would think that since different LEDs have different voltage ratings that this would change the circuit? Or is it a negligible change or something... Thanks again.
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Old 7th July 2008, 01:43 PM   #6
Pano is offline Pano  United States
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Check around some of the surplus sites like Goldmine Electronics, All Electronics and such. Or even eBay.

They may have the common 10 segment arrays for cheap. You could save a lot of cash.

Cool project, BTW. =)
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Old 7th July 2008, 02:07 PM   #7
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Here is a link to some 20 segment on ebay......

http://cgi.ebay.com/Display-SSA-LXB2...QQcmdZViewItem

It might be cheaper to buy 40 peices of 10 segment from digikey though depending on how low of an offer the ebay seller will accept.
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