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Old 11th January 2013, 10:56 PM   #11
olafk is offline olafk  Germany
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and another one:

Just for Fun 01 - YouTube

regards Olaf
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Old 12th January 2013, 07:45 AM   #12
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Originally Posted by olafk View Post
Just for fun, but not ready:
AudioAnalyser - YouTube

regards Olaf
Quote:
Originally Posted by olafk View Post
and another one:

Just for Fun 01 - YouTube
Thank you so much for keeping my request, Olaf !
Lovely videos!
I showed the videos of your creation to two friends. They simply loved those!
Great work!
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Old 3rd July 2013, 07:19 PM   #13
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Hi olaf,
I want to make an audio spectrum analyser following you.

Could you kindly help me with your board layout and schematic in pdf format?

Thank you.
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Old 5th July 2013, 05:50 PM   #14
olafk is offline olafk  Germany
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Sorry for delay. I will look for the files later.

Regards
Olaf
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Old 5th July 2013, 05:57 PM   #15
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Sorry for delay. I will look for the files later.

Regards
Olaf
Thank you so much Olaf.
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Old 5th July 2013, 06:40 PM   #16
olafk is offline olafk  Germany
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Ok, here we are.
If you need the files mirrored, i can print it new.

regards Olaf
Attached Images
File Type: jpg Filter.JPG (162.1 KB, 217 views)
File Type: jpg Preamplifier+Buffer.JPG (202.6 KB, 180 views)
Attached Files
File Type: pdf Layout_Filter.pdf (22.2 KB, 26 views)
File Type: pdf Layout_Preamplifier.pdf (42.8 KB, 24 views)
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Old 5th July 2013, 08:11 PM   #17
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Ok, here we are.
If you need the files mirrored, i can print it new.

regards Olaf
Thank you so much Olaf!
This is really a great help!

I will try to follow your design and report you about my progress soon!

Thanks a ton!
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Last edited by csom; 5th July 2013 at 08:15 PM.
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Old 5th July 2013, 08:38 PM   #18
olafk is offline olafk  Germany
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Have fun.
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Old 15th July 2013, 07:49 PM   #19
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Dear Olaf,
I found a nice display section with more LEDs on youtube
10 band audio spectrum analyzer with 400 LED FullHD - YouTube
This section uses LM324 opamps.

The poster posted a documentation link there too.
YouTube

I want to use this display section along with your filter section.
It would be great if you could confirm it will work or not.
Thank you.
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Old 16th July 2013, 12:30 AM   #20
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Here is some info on a 2x15 and a 1x40 VU meter using an inexpensive PIC16F88. Add proper filters in front (for 1/3 octave you will need a 6-pole Butterworth for each band): www.s-o.webnode.cz/vu-meter/ E
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