My Big Blue Audio Spectrum Analyzer Video 3

One last video of the analyzer from a distance to let you see more of the control board. The PIC and its support chipset are at the top of the board. The PIC is a microcomputer that drives the display array and computes data into linear, logarithmic, dot and bar mode patterns.

Center of the board is filtering. Design of the filter elements was critical.

The bottom section of the board is input signal conditioning and remote control decode logic.

The existing control board outputs can drive many LED's per "pixel" or even 8 watt incandescent lamps. This display is the "mini" version of the final product.

The two boards stack inside a metal frame to permit hanging on a wall.

Category:

Howto & Style

Tags:

• VU
• Meter
• Audio
• Spectrum
• Analyzer
• Microchip
• PIC
• Home
• Made
• Music
• Sound
• LED
• Lightshow
• Light
• Electronic
• Art

[bungalowhulk]

can you please make video explaining how you made this?? or post instructions somewhere?i really want to make one for my music production setup. it would make mixing much easier. does it work in real time?

[gavincurtis]

It is in real time to find hidden peaks. You can get it on ebay as a kit now.

Ebay search "VU meter kit"

[gavincurtis]

@bungalowhulk

If you need full assembly, call me 888-892-0764

[johneymute]

oke tell me how to do it and what i do need.

note: i have a famicom console with mono output.

there,re 5 instruments/sounchannels inside the famicom, for wich 2 instruments are far to quit that i even can,t hear it.

my goal is to increase the volume from those 2instruments till it match eachother.

thank you very much.

[gavincurtis]

Hi johneymute,

Have you shopped around at a pawn shop or ebay for one of the stereo graphic equalizers which were popular in the 80's and early 90's? You should be able to pick up a nice 10 band stereo (20 bands total) for under $20.00.

It would have the exact filtering you need with all the bandpass control necessary to amplify the specific sound you want.

It simply would plug in between your famicom audio outputs (RCA line level) and then into your amplifier.

[koolariz]

hi,

i'm a student, and i'm doing this for my final college project.. and i wonder, if you could share, how much program memory did u use with fft and the rest of the code (pic16f877 and exclude boot-loader if any), because i wonder if there is any left to implement displaying text written from a ps2 keyboard, and some other stuff. i'm asking because i'm at the designing stage and i'd like to know the boundaries.

thank you!

[dra90n8]

could you mail me some instruktions on how you made this? i want it so badly and im not able to call you cuse i live in sweden

[Philscbx]

Nice Job.

Watching the VU meters on my iTunes player actually got me here. Google search, and search here, and here we are.

[crackflash77]

Please I need to know that integrate circuit you used to make the vumeter and that integrated circuit usastes for the filters bandpass and of that oreden are the filters 1º 2º o 3º And the size of the box of leds

sorry for my english

[gavincurtis]

I might be able to get close to that price with no LED's in the kit (bare display array board). You would provide your own LED's if blue is not your color.

[gavincurtis]

It can, but the board is currently wired for 16 X 16. What are you wanting to display?

The current configuration can also diplay scrolling text, simple animation, digital clock, oscilliscope waveform as well as the audio bars as in this video. It all depends on what is programmed in the microprocessor for the desired display.