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olafk 24th December 2012 10:37 PM

Christmas Project - Audio Analyser
2 Attachment(s)
Here is my Christmas project: audio analyzer, still under construction. All sources come from Project 136

I hope I'm ready for the new year.

regards and mery christmas


ronned2tm 24th December 2012 10:52 PM

That is just freakin cool! Merry Christmas to you!

csom 25th December 2012 02:19 PM

This is amazing!!! Wow!!! Great work , Olafk!

Could you please tell what is the total cost and power consumption of this project?

Merry Christmas!

olafk 25th December 2012 02:55 PM

The total cost is round about 100 Euro without PCBs. It needs 2 PSU. 8V for LEDs (apr. 3...3,5A) and +/- 15V for preamplifier (150 mA). But only if you can produce your own PCBs.

regards Olaf

csom 25th December 2012 03:34 PM

Thank you so much Olafk.

Could you please share your experience, observation, opinion, the problem you faced, or the tweaks you did when you have time ( without violating the strict copyright of ESP site of course :D )?

olafk 25th December 2012 04:09 PM

2 Attachment(s)
Here are a few components. Power supply for 8V with stabilization with Zener diode and 2N3055, + / -15 V power supply with LM317/337 and preamplifier.
When I assembled everything, I can report.

regards Olaf

csom 25th December 2012 04:21 PM

Thank you again Olaf!

I am so eager to see the photos of your completed project !

All the very best.

olafk 9th January 2013 06:31 PM

1 Attachment(s)
Attachment 322675

Technically nearly completed, enclosure is still missing.

regards Olaf

csom 10th January 2013 10:27 AM


Originally Posted by olafk (
Attachment 322675

Technically nearly completed, enclosure is still missing.

regards Olaf

WOW! This is an amazing work!! Hats off!

I would love to see a video of this gem in action!

Please post a youtube link at your convenience!!

Thank you so much! And congratulations on your this grand achievement!.

olafk 10th January 2013 08:05 PM

Just for fun, but not ready:
AudioAnalyser - YouTube

regards Olaf

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