I just finished this little project. I actually finished a week a go, but did some finishing touches to the circuit these last few days. The circuit has a volume control and the LED high reference control (using the pot's). I didn't make the LED brightness adjustment, because the light was just fine by me (if you feel the need you can add it by adding the extra pot on LM3915). The TEA2025 did a much better job than the LM386 as expected, but as I was finishing this project, I have to say it is still pretty weak. You can listen to them but don't expect a good punch without hearing atleast a little noise (The power limit of the TEA2025). You may get a better resault than me if you get a decent speaker, mine was used and as I later found out crappy as ....
So without say any more, here is the circuit:
And the video result:
http://youtu.be/wCjnDwTiAwM
And the remake of this projects title will be posted next week, when I will get more info about it, so I could tell you more about it than just the idea.
By the way the transistor line at the LED's is not necessary, I was planing to put LED strips then you would need the transistors (the LED strips would go instead of the LED's in the circuit), if you only want 1 LED per level than connect them like this, in the picture:
If you have any questions, please ask if i'll know the answer I'll try to help ;)
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