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Need Help for the Moving Text Display Project

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cmyew

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Hello,

I am a newbie in pic microcontroller field. Can somebody provide information about how to scrolling a message by using shift register. the pic that i used is pic16f877a.

the circuit that i used as reference is similiar with the diagram below:
url=http://obrazki.elektroda.pl/14_1194402379.gif]
14_1194402379_thumb.gif
[/url]

i appreciate for ur help

thank you
 

Hello,

Anybody can help me??

Thanks
 
Hi,
It is simple:
Assume i is the numer of the line. Here we have 7 lines.
We usualy start with line 1
1- You select the leds that you wish highligth on line i using serial data transmission since the HC595 is a serial to parallel shifter.
2- This done you, select the the line i in your schematic this choise is done by an 3:8 Encoder.
That mean that PIC must has as output 000.
3- You wait for a while
4- You lowligth the leds
5- You incremente i
6- if i>7 then move to line 1 else move to line i+1 and repeat previous steps.
 

Ahh I see the schematic now, the OP just didn't bother to check his formatting.

Hope they used 0.1uf decoupling caps and a nice big power supply cap. The current needed will be just over 1Amp.
 

See this :

there's a good project on page 11 to download !
 

Hello,

first of all, i really thanks and appreciate for your reply.

But i still confuse at the part of shifting the words from column to next column by using shift register

for example:

10000 01000
10000 01000
10000 -> 01000
10000 01000
10000 01000

thanks
 

Hello Beny,

I also noticed that there have a program that may be suitable for me but i dont have enough point to download it.

Anywhere thanks for your advice
 

if you are using PIC see this

**broken link removed**

it's a good course to start and understand.
 

nobody can help you unless you show the exact schametic.
 

Hello Beny,

thanks for the website that you shared to me. I will try to understand it

Thanks
 

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