Christmas Project - Audio Analyser

[olafk]

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

Olaf

 

[ronned2tm]

That is just freakin cool! Merry Christmas to you!

 

[csom]

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]

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]

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 😀 )?

 

[olafk]

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]

Thank you again Olaf!

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

All the very best.

 

[olafk]

Technically nearly completed, enclosure is still missing.

regards Olaf

 

[csom]

View 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]

Just for fun, but not ready:
AudioAnalyser - YouTube

regards Olaf

 

[olafk]

and another one:

Just for Fun 01 - YouTube

regards Olaf

 

[csom]

Just for fun, but not ready:
AudioAnalyser - YouTube

regards Olaf

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!
🙂

 

[csom]

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.

 

[olafk]

Sorry for delay. I will look for the files later.

Regards
Olaf

 

[csom]

Sorry for delay. I will look for the files later.

Regards
Olaf

Thank you so much Olaf. 🙂

 

[olafk]

Ok, here we are.
If you need the files mirrored, i can print it new.

regards Olaf

 

[csom]

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!

 

[olafk]

Have fun.

 

[csom]

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. 🙂

 

[mickeymoose]

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