Puteţi urmării video-ul de mai sus pentru o exemplificare mai clară.

El a declarat pe blog-ul lui:

I love vu meters. I mean it I really really like them. So with me doing so much work on psp’s over the years I knew that I would one day end up trying to fit one in a psp some how. I should say before I start that this is only a semi finished project. My psp (the one I use for gaming) has a full vu meter installed, however I have plans to do an entirely new revision of this, which I will go into more detail about later.
For those of you not in the know a VU meter displays signal level in Visual Units. They are often seen in audio equipment an are usually ether a needle or led display.

There are two ways that I know of of building a vu circuit. One is with a ic that is designed for it called a LM3915. This is relatively simple to use and would be perfect for what I want to achieve. I didnt have one of those though. The other way is using several opamps. I had some of those. So the design I went for in this first revision was 2 quad opamps called LM324′s Heres an schematic of that circuit. Please note that this is not the actual one I used as I had to modify that for use with the psp. I do have that schematic but its currently residing in my desk tops HD in storage. I’ll update this when I get set up back in the UK.

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