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Old 3rd October 2008, 11:29 AM   #1
skappy is offline skappy  France
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Default VFD analogic vu meter diy

Hi Everybody,

May i ask you if you know some plan, schematics or even information on how to build the same VFD display vumeter as the one enclosed.

I've got 256*64 nortiake VFD, some Micrichip PICs but i need information on how i should proceed for the next building steps ...

Thank you very much for your help ...

Have a nice week end

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File Type: gif squeezebox-vfd-vua.gif (26.3 KB, 671 views)
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Old 3rd October 2008, 10:18 PM   #2
DcibeL is offline DcibeL  Canada
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You want someone to teach you how to program or...?
The power of Science compels you!
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Old 4th October 2008, 12:48 AM   #3
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where is possible to find vumeters like that?
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Old 4th October 2008, 08:33 PM   #4
skappy is offline skappy  France
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i'm just wondering if somebody has already build something similar.
I only try to find schematics and why not code if it is available ...
Thank you
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Old 5th October 2008, 12:48 PM   #5
skappy is offline skappy  France
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What do you think of using a LM3914 and intreafcing it with a pic for displaying results to the VFD ?

Sorry for bothrting you but i'm trying to obtain as much info as i can ...

Thank you very much
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Old 9th October 2008, 04:25 PM   #6
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Location: midlands
Originally posted by skappy
Hi Everybody,
May i ask you if you know some plan... snip
I think thats a picture of a squeezebox in screen-saver mode. You can choose analogue syle meters - quite groovey really

Anyway, I'm very much a beginner here, but I would have thought that you should be able to use 2 of the built in ADC's on a PIC and to then draw the display (referencing the data-sheet for your display) on the vfd using straight-forward trig-functions.

Don't think you need the LM3914.

This is just my thoughts tho.....

May be easier to program in c than assembly.


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Old 11th October 2008, 01:40 AM   #7
jaycee is offline jaycee  United Kingdom
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Location: Norwich, UK
Yep, use the inbuilt ADC's will be enough. You will have to convert the signal to a single polarity signal and attenuate it some first.

If you aren't a programmer though, with no experience working on microcontrollers - forget it.
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