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Hardware real-time spectrum analyzers and peak level meters?

soundwave76

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#1
Any tips on cheap desktop (not rack) hardware products, that have real-time spectrum analyzers and/or peak level meters? These could be a cool addition to many systems. I personally miss the spectrum analyzer of the RME ADI-2 Pro I no longer have... :)
 
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soundwave76

soundwave76

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Thread Starter #2
There are many DIY LED kits for example on eBay but I am looking for maybe a bit more PRO device...
 
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soundwave76

soundwave76

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Thread Starter #4
I have tried. No luck yet. That's why I am asking for tips.
 

Habu

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#5
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Habu

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DWPress

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#8
How about one of these? I had all the parts and made it for about $1.00.

IMG_6528.jpg
 

DWPress

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#10
LOL, NO!

It's an iPhone 4s or 5 (I forget) with a $4 app called Spectrum which also does octave, FFT and spectral plots in various ways that I use on my current phone. I'm a bookbinder and printer so wrapping it up in some book board and pleather took about 10 minutes. Just made this prototype earlier this week when I saw someone else posting about the expensive single purpose boards on eBay from Asia.

Who among us on this list doesn't have a few old smartphones in a drawer? You could buy an old iPhone for less than one of the "new" OLED screen toys and use it just for this.

I thought briefly about marketing the enclosure but that sounds like a nightmare with all the different phone sizes and shapes so I'll let someone else steal this idea and stick to making books.
 

RayDunzl

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#11
Yeah, but it has tubes...
 

DWPress

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#12
Yeah, but it has tubes...
\
LOL, that's an unused little tube buffer sitting behind the display. Great idea though - little led light on top with a tube glued on it and I could charge $200 instead of the $20 I was thinking...

Here are some better pics. Anyone should be able to figure out the basic pieces based on these and make one for themselves:

IMG_6530.JPG IMG_6531.JPG IMG_6533.JPG IMG_6534.JPG IMG_6535.JPG
 
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soundwave76

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Thread Starter #13
Nice!! This is an innovative idea and I do have several old iPhones laying around in the house. Kudos to this DIY! :)
 

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