Need help for making "Rolling display using Matrix LEDs" : 8051 Microcontroller Projects AVR PIC Projects Tutorials Ebooks Libraries codes

Forums

Rickey's World :: Discussion Forums :: Project Development :: Project Help		<< Previous thread \| Next thread >>
Need help for making "Rolling display using Matrix LEDs"


Moderators: Ajay Bhargav, Arun Kumar V, pdi33, Shailesh NAYAK, ۞ TPS ۞, shyam, sashijoseph, ExperimenterUK, DavesGarage

Author

Post

rushi53

Mon Jun 01 2009, 11:31PM

Registered Member #18965

Joined: Mon Jun 01 2009, 10:29PM

Posts: 7
Thanked 0 times in 0 posts

Hi I am want to make a Rolling message display for which I want to use Matrix LED display.
can someone help me for this.

MATHIVANAN

Tue Jun 02 2009, 12:18AM

Registered Member #2569

Joined: Wed Jul 25 2007, 05:21AM

Posts: 96
Thanked 11 times in 9 posts

Left to Right:
Initially just Display the (Starting) One Letter in Left side. Give the delay for 50ms and Display the first letter to next position from right to left,Second Letter in the first position. Give the delay for 50ms. Again do the same procedure continuously in the Loop.

I respect others the same way i expect from others.

rushi53

Tue Jun 02 2009, 01:17AM

Registered Member #18965

Joined: Mon Jun 01 2009, 10:29PM

Posts: 7
Thanked 0 times in 0 posts

Hey MATHIVANAN, thanks for the quick reply, I appreciate your comments.
But problem is that I am not using the readymade matrix display, instead I want to design a PCB where I will solder normal 5mm LEDs.
Reason behind this is that the readymade Matrix display are small in size and I want to design a size of approximately 10cm by 15cm so that it is visible from a long distance.
For this I need a circuit design from basic. I would appreciate if you provide me a circuit diagram or some help regarding circuit diagram

Ajay Bhargav

Tue Jun 02 2009, 06:38AM

Rickey's World Admin

Registered Member #1

Joined: Fri Feb 24 2006, 04:56AM

Posts: 7567
Thanked 1331 times in 1255 posts

build something.. will tell you if its right or wrong.. and how to modify it. or just google.. you will get many circuits.

www.rickeyworld.info
If you feel satisfied with the user's forum reply please click on the thank button.

Obey forum rules!
Respect others!

MATHIVANAN

Wed Jun 03 2009, 06:48AM

Registered Member #2569

Joined: Wed Jul 25 2007, 05:21AM

Posts: 96
Thanked 11 times in 9 posts

I think this is the circuit what you want.

led-dot-matrix-display.pdf

I respect others the same way i expect from others.

This post has been thanked 1 time

rushi53

rushi53

Wed Jun 03 2009, 10:36PM

Registered Member #18965

Joined: Mon Jun 01 2009, 10:29PM

Posts: 7
Thanked 0 times in 0 posts

Hey MATHIVANAN, thanks for the circuit diagram,
Now I can start working on this...
THANKS a TON !!!

ExperimenterUK

Thu Jun 04 2009, 02:11PM

Registered Member #9602

Joined: Tue Aug 05 2008, 04:15PM

Posts: 1262
Thanked 199 times in 198 posts

rushi53 wrote ...

Hey MATHIVANAN, thanks for the circuit diagram,
Now I can start working on this...

It is one way, but may not be the best way for you.
It may be better to consider other methods before committing yourself.

You want a 10cm by 15cm display. Have you decided how many leds you will have up and across ?

[ Edited Thu Jun 04 2009, 02:13PM ]

rushi53

Thu Jun 04 2009, 09:12PM

Registered Member #18965

Joined: Mon Jun 01 2009, 10:29PM

Posts: 7
Thanked 0 times in 0 posts

ExperimenterUK wrote ...

Hi ExperimenterUK,
I want to use a matrix of 7 by 5 LEDs
I mean 7 rows and 5 columns
Like shown below:

o o o o o
o o o o o
o o o o o
o o o o o
o o o o o
o o o o o
o o o o o