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Old 24th September 2014, 03:19 PM   #1
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Default Spectrum analyser using LM3915

Hello,

I am looking for a 10 band LED spectrum analyser using LM3915. Unfortunately a few circuits I have found on web are far too complicated for my calibre.

Does anyone have a tested circuit?

This is exactly what I am looking for:

https://www.youtube.com/watch?v=7D-ZWhCnzBE

Thanks in advance.
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Old 24th September 2014, 07:14 PM   #2
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Go to: http://s-o.webnode.cz/vu-meter/ you will find a 2x15 and a 1x40 vu meter based on PIC complete with code. Be warned: the site is in Czech! E
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Old 25th September 2014, 02:11 AM   #3
Vasquo is offline Vasquo  United States
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Join Date: Sep 2014
Location: Nashville, TN
Quote:
Originally Posted by inverseopamp View Post
Hello,

I am looking for a 10 band LED spectrum analyser using LM3915. Unfortunately a few circuits I have found on web are far too complicated for my calibre.

Does anyone have a tested circuit?

This is exactly what I am looking for:

https://www.youtube.com/watch?v=7D-ZWhCnzBE

Thanks in advance.
Schematics are available for this project. It's pretty smart, using a single 3915 and multiplexing it to light up 10 bands.
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Old 25th September 2014, 02:36 AM   #4
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Quote:
Originally Posted by mickeymoose View Post
Go to: http://s-o.webnode.cz/vu-meter/ you will find a 2x15 and a 1x40 vu meter based on PIC complete with code. Be warned: the site is in Czech! E
Hi
The page not fond
Do you have any other adress or do you have compelet things about your spectrom?
Thank you
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Old 25th September 2014, 11:47 AM   #5
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Location: Dona paula, Goa
ROELECTRONICA
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Old 25th September 2014, 06:58 PM   #6
olafk is offline olafk  Germany
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Join Date: Mar 2011
Location: germany
Look here:
Christmas Project - Audio Analyser
Original data comes from ESP at Project 136

You can even choose the number of modules. I built it and the effect is great.

regards Olaf
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