Free Project - 245 LED Display

i had to so some reading about serial eeproms and i am wondering if i can use a 24c16? apart from changing the control code and space limitation comparted to 24lc256, do you think i will have any problem assuming i am able to take care of the issue of pin compatbility if that happens to be the problem, i am really sorry if i am fooling around again with my question.


having to load message means i have to bring down my display and use my desktop serial port, i also bought a programmer and it has serial port. i was thinking if i can use a usb to serial converter so i can use my laptop to both load message and can also use the serial pic programmer with my laptop by using the adaptor. has anyone tried this out?


is there a free software or utility with which i can generate my custom character defintion for any matrix size i want, because i want to actually make a 14 by 10 size matrix display.


i was thinking of using red green and blue led in sequence so that when they scroll i sort of have a colored display, but the current required varies to get some level of brightness for the different color of leds, any advice?

thanks alot

Quote:

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Originally Posted by inspired4real

any advice?

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Stay tunned for my extensive line up of mikroC projects to come. Oh, and watch out for angry Government officials and tax payers.

Trent Jackson

How hard would it be to expand this project into a 16rowx48column display?

(I happen to have a 16x48 matrix gathering dust)


Cheers
Steve

Quote:

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Originally Posted by aurbo

How hard would it be to expand this project into a 16rowx48column display?

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Nothing is hard when you know what you're doing. But you wouldn't use this design for a big display like that. A step in the right direction would probably involve considering a module-based schema. This would allow any size display to be constructed, simply by connecting more modules together. Each module could be say: 16 x 24, occupied with its own microcontroller, leds and IO interface connecting to other modules. I think one of the biggest milestones for a project like this would be in the software.

Best regards,

Trent Jackson

Does anyone know of source for scrolling sign (pcbs only) for purchase in lots of 100 pieces? We would like to integrate these boards into our LED arrays.
Boards need to drive either 7 rows by 40 columns or 7 rows by 80 columns
USB interface for updated messages from pc
IR remote control interface
I will provide any other details if there is any interest
We will also be interested in purchased the associated remote control units.

If only I thought it was genuine buddy.

I usually take around 3ms to work people out.

Next.

HI T.Jackson

can you please tel me the modification in the code to work with 74hc164

Thank you in advance

hi t.jackson

we built ur project ,but we face some problems..
first we changed the eeprom type to (24lc16b) -256 is not avaible
but there was no thing working no message on the screen
and one thing more...
the eeprom when programmed by the serial and the pic (this stuff)
when we read it on our computer only one address changes the first one only..!

just wanted to know something too where the programme start writing on the eeprom (which address) .

i wonder if i continued working with this eeprom (24lc16b) should i change the software (the pic software).

Thanx in advance

Hi Magu

Help me i can't find www.zamfirelu.com that u post pdf file in 245 Led Matrix Display (as constructed by Magu) ....

I think magu has left the forum...

Ioannis

Hello friends I'm very happy and grateful to the t.Jackson it works very well. but had to use another computer to program the vb did not work because in my pc. wanted to know if you are like me change the transistors to turn more LEDs per pixel example three LEDs in series and make an pannel big

the program vb not run in my computer ,but run in my notebook and outhers im format my computer and not run help-me

Trent wanted to be my friend is not asking too much, me that the source code of vb to change as necessary or if you can not just tell me what he does only I can do similar for the assembly so I found problem with crystal but failed to replace and worked beyond the error of the pins to rest everything was very well I am very grateful, God bless

I have a feeling of strong resemblence between the two users with the similar user name. Or not?

Ioannis

Yeah, Ioannis is perhaps a bit physic too.

Wish I could make some sense out of the questions / remarks.

Good gawd this thing is a total nightmare.

Never again will I post projects on the net.

Some people are claiming ownership of some of them, particularly the Donkey Kong game that I wrote.

2 people have posted it on programming forums claiming that they wrote it, as their first program in VB!

Get real.

Quote:

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Originally Posted by T.Jackson

Never again will I post projects on the net.

Some people are claiming ownership of some of them, particularly the Donkey Kong game that I wrote.

2 people have posted it on programming forums claiming that they wrote it, as their first program in VB!

Get real.

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Well that sucks that people have hijacked your good work Trent.

While I learned ALOT about matricies from this project I ended up taking a different route based on what I learned.

Its a shame that other people refuse to learn from others rather than just copy and paste and claim it as their own.

I had similar problems with writing things like vb scripts in the past, some of the satellite offices where I worked started to promote others based on the scripts "they created" which saved the company big bucks.

I counter claimed every claim and won recognition but never the promotion or the bonuses.

Funny how someone can take something like your own name and embed it into the variables that no one notices, especially when spread out but in order.

set T as int
set J as int
set A as int
set C as int
set K as string
set S as int
set O as string
set N as Var

Quote:

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Originally Posted by aurbo

While I learned ALOT about matricies from this project I ended up taking a different route based on what I learned.

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Smart guy.

This is exactly what you should be doing.

I can not say if it's the same magu. Email's different, IP's different, language is the same.

However, it seems you're done with this thread Trent.

Can I close it, please?

DT

Permission granted.

Guess I won't be posting what I just fabricated in photoshop.

... Edited ...

Thank you.

Closed!