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Scrolling in LED Dot Matrix

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ignitedindian

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scrolling dot matrix

Hi !!

I have developed a program for controlling 5 x 7 LED Dot Matrix using PIC18F4550. I am attaching my project files here. (Source code in mikroc, simulation in proteus).

I am able to scroll the text letter by letter, i.e. block by block. I am not able to scroll it smoothly, shifting by just one coloumn at a time. Please suggest me an approach.

Thanks.
 

how to scroll 25 leds
 
scrolling letters of led matrix using program

You might need a controller for each matrix [5x7 LEDs].
With this you can control each character as it moves from a column to the next within that matrix. Also if it has done with the scrolling in that matrix, its microcontroller can transmit to next microcontroller and hence pass the character and so on...

however, this is not so cost effective. :D
 

scroll led matrix source code

Hi
No further controllers are required. When i was doing such things i use only one Micro-controller to scroll 120 BY 24 Pixels. The controller was not a RISC that was the classical CISC based MSC 51 Architecture.
Optimize your code for delays and use data holding registers like serial in parallel out registers.
 

scrolling led display block diagram

Hi ignitedindian,
I was not able to open the DSN file, What software and version are you using ?
Preferably post the GIF file for schematic, so that everybody can see it.
Since I could not see the diagram, so I am not going through your code.

The problem that you posted seems that : scrolling is working, but it is in blocks. If you post the GIF file of circuit, I might be able to help you. You need independant driver to every row and column. Example: if you want to develop a display with 16x200 LEDS then you need 16 row drivers and 200 column drivers. That is the only way you can scroll each column.
 

hey hello, excuse me, I need to ask you some questions about your project, I hope I can amrme answering them and I find a great idea but I have problems when performing laboratory

these driving anode or cathode?
remains switched on as lit static blocks and after a while blinks

thanks¡¡¡
 

i want to display an sms sent from my mobile to this dot matrix scrolling display using a GSM modem....how to do...anyone plese help me
 

Re: scrolling dot matrix

ignitedindian said:
Hi !!

I have developed a program for controlling 5 x 7 LED Dot Matrix using PIC18F4550. I am attaching my project files here. (Source code in mikroc, simulation in proteus).

I am able to scroll the text letter by letter, i.e. block by block. I am not able to scroll it smoothly, shifting by just one coloumn at a time. Please suggest me an approach.

Thanks.
Click to expand...

not working
 

Re: scrolling dot matrix

ignitedindian said:
I am not able to scroll it smoothly, shifting by just one coloumn at a time. Please suggest me an approach.
Click to expand...
Hi;
My project is for PIC16F628A and written in Proton basic but I hope it will help you. Look at the attachment here:
https://www.edaboard.com/threads/11364/#post898313
Good luck
zuisti

EDITED:
Your attached project doesn't work and nothing to do with my old project which is working ....
 
Last edited:

Shift the display. One microcontroller is enough to do that job. If you require more matrix then use shift register ICs
 

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