Mike, K8LH

Thank you for the compliment. I suspect it is more work but I was hoping to make the drawings seem more visually interesting and intuitive.

Regards, Mike

Sceadwian

You should use something like Eagle for the crude start out trace, learning to use it is smarter than learning to place manually yourself. After it's placed it's traces you can tweak them to your hearts content. Doing the whole thing from start to finish on your own is really a waste of time, no matter how good you get at it.

__________________

Gayan Soyza

Ya MS Office Packages does a great job also MS Paint.We wont consider much of these built in tools we mostly Prefer to advanced schematic design softwares. In my case I Preffer MS Excel for Schematics.It's So fun & very Creative.In the begining it takes some time to draw & after having experience can work quickly.

Thankx Mike for ur coloured Schematics.It's very useful.

Mike, K8LH

Someone uploaded that EPE "Giant LED Message Display" article on EDAboard in this thread; Led Message Display EPE Mag 2006/11

The Author actually did a very nice job coming up with a cohesive comprehensive 'system' for driving 5x7 matrix display modules. The design doesn't include row drivers and can't drive the displays to full brightness and doesn't include PWM brightness/fade control but is nonetheless a reasonably well thought out design.

linc85

Help me out anyone,pls...
Tell me how the LED function...
and help me with a microprocessor program...
Thanks

Sceadwian

Yet another thread brought back from a restful grave by a first time poster with an unanswerable question.

42

__________________

pasanlaksiri

Bravo Gayan.

Peter_wadley

Nicely done Gayan!

__________________
"Stick around" - Arnold Schwarzenegger in The Predator after impaling a soldier to a wood post

9vDC Guitar Pedal PSU

PIC16F84a Game Module

v-nay

can anyone help me for the same project...(Scrolling LED message Display) using AT89c51????
im in real problem...
can anyone help me?

charmrus

if you look at an LED to long that your eye's will sparkle

sanjeewabcs

Hello Gayan....

Can u send me sample circuit and source code with *.hex fike

sanjeewabcs

can anyone help me for the same project...(Scrolling LED message Display) using PIC16F84A............?
im in real problem...
can anyone help me?

Gayan Soyza

I learned many things from this site visit this site & look under 5X7 project.
http://www.talkingelectronics.com/te...ive_index.html

I used a similar technic that I used in my design if you got the correct picture you can scroll any pattern that you like.For that you need to write more coding.The code they provided is only for one way scrolling & its very long in my method I used indirect addressing that will be more difficult to a beginner.

__________________
Gayan
Forum Supporter

donniedj

All the techniques to drive large displays using special code are great. I have been in this game long enough to learn that years of developing clever schemes ends up almost in vain. Because one day soon, enters any one of the higher-pin count, double to quadruple code size, and peripherals galore cheaper than the older 18-pin devices to come along and disrupt all that "design around limitations" ingenuity.

__________________
I can still log in! Delete my account and all my post now.

astina76

Thanks for all informations, I'm a newbie from indonesia. sorry for my english..
my schoolproject about led matrix, it's based on at89c55. but it's never done right.
so I look out for basic tutorial about it.