Where do i find an LED Bar?

guitarguy12387 · 7th July 2008, 02:18 AM

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.

Chartal · 7th July 2008, 03:45 AM

Hi.

Hint -->> Digi-key, search result for "Led Bar Graph"

guitarguy12387 · 7th July 2008, 11:35 AM

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!

rtarbell · 7th July 2008, 11:41 AM

"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.

guitarguy12387 · 7th July 2008, 11:48 AM

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.

Pano · 7th July 2008, 12:43 PM

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. =)

theAnonymous1 · 7th July 2008, 01:07 PM

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.

7th July 2008, 02:18 AM	#1
guitarguy12387 diyAudio Member Join Date: Mar 2008	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.

7th July 2008, 12:43 PM	#6
Pano diyAudio Moderator Join Date: Oct 2004 Location: North Carolina Blog Entries: 4	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. =) __________________ Take the Speaker Voltage Test!

7th July 2008, 01:07 PM	#7
theAnonymous1 diyAudio Member Join Date: Feb 2004 Location: Anonymityville	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. __________________ "If you don't like funerals don't kick sand in Ninja's face." - Ninja

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7th July 2008, 03:45 AM	#2
Chartal diyAudio Member Join Date: Nov 2004 Location: Montreal	Hi. Hint -->> Digi-key, search result for "Led Bar Graph"

7th July 2008, 11:35 AM	#3
guitarguy12387 diyAudio Member Join Date: Mar 2008	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!

7th July 2008, 11:41 AM	#4
rtarbell diyAudio Member Join Date: Sep 2005	"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.

7th July 2008, 11:48 AM	#5
guitarguy12387 diyAudio Member Join Date: Mar 2008	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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