help requst for led display board

[adarang]

led display board simulator

hi
my hardware for led disply board is in the attachment file .
and i need help for the basic program for drive it.
(in the bascom or fastavr)
can anybody help me?
thanks.

 

[cmyew]

8 bit led display board

Can you share the diagram with me because i also doing the same project.
i using the pic16f877a and shift register to control the LED dot matrix.
but i dont know how to drive the shift register to shift the text from column to column.

Thanks

 

[adarang]

cmyew Posted: 11 Nov 2007 8:09 Post subject: Re: help requst for led display board

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Can you share the diagram with me because i also doing the same project.
i using the pic16f877a and shift register to control the LED dot matrix.
but i dont know how to drive the shift register to shift the text from column to column.

Thanks



hi
you can download it from this tpic
i uploaded it in this topic .

but i can not write a program for it.
the onnection diagram is ok.
u cant download it?

 

[cmyew]

Sorry,

I cant see it may be is the file type problem

 

[adarang]

hi
u must have the proteus 7.1 or later to see it.
u can download it from rapidshare:

**broken link removed**

 

[Mike K8LH]

So what about those of us who don't have Proteus? You don't want our help?

 

[blueroomelectronics]

I'm not going to install Proteus to check your problem. Just post the schematic as a gif, png or pdf

 

[wizpic]

Sorry I don't use AVR micro's but looking at it it looks a bit over the top if it's for a volt meter

blueroomelectronics here you go

the other question I would ask is you can't write the code and you want some one to do it for you ?

well how much are you willing to pay some one, we all like to help but asking some to write the code for you is a bit of a cheek I think, the way i lopok at it I'm willing to help others who are willing to help themselves.

have you tried writing the code for it ?

wizpic

 

[blueroomelectronics]

Design is incomplete, no column driving transistors, no LED current limiting resistors.
The 74HC164 can source 20 ma per pin but the entire chip can only deliver a total of 50ma so you have to limit the current per pin to 50/8 or 6.25ma per LED.
Might work in a simulator but not real life.

PS Wizpic read your personal mail, I've sent you a letter.

 

[adarang]

hi
thanks for ur reply.
i want yo simulate it in the proteus not in real.
can u send me the program for it plz?