VFD analogic vu meter diy

skappy · 3rd October 2008, 11:29 AM

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

Skappy

DcibeL · 3rd October 2008, 10:18 PM

You want someone to teach you how to program or...?

samsagaz · 4th October 2008, 12:48 AM

where is possible to find vumeters like that?

skappy · 4th October 2008, 08:33 PM

Hi,
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

skappy · 5th October 2008, 12:48 PM

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

MikeBarton · 9th October 2008, 04:25 PM

Quote:

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.

HTH

Mike

jaycee · 11th October 2008, 01:40 AM

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.

3rd October 2008, 10:18 PM	#2
DcibeL diyAudio Member Join Date: May 2003 Location: Saskatchewan	You want someone to teach you how to program or...? __________________ The power of Science compels you!

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4th October 2008, 12:48 AM	#3
samsagaz diyAudio Member Join Date: Aug 2004 Location: Argentina	where is possible to find vumeters like that?

4th October 2008, 08:33 PM	#4
skappy diyAudio Member Join Date: Jan 2004 Location: France	Hi, 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

5th October 2008, 12:48 PM	#5
skappy diyAudio Member Join Date: Jan 2004 Location: France	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

11th October 2008, 01:40 AM	#7
jaycee diyAudio Member Join Date: Apr 2004 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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