Instructables

Make a 24X6 LED matrix

Featured
Picture of Make a 24X6 LED matrix
PICT0003.JPG
PICT0021.JPG
After making a 8X10 matrix a lot of people asked me about expanding the matrix to some thing bigger, and some wanted to write stuff to the matrix via a PC, so one day I looked at a pile of LEDs that I had leftover from a LED cube projected and I decided to make a bigger matrix with all the things people wanted.

So what are you waiting for? Get those LEDs out and heat up your soldering iron because we are about to make a 24X6 LED matrix! 





 
Remove these adsRemove these ads by Signing Up

Step 1: Getting All The Right Things

Picture of Getting All The Right Things
FGU90KFG3CAMA76.MEDIUM.jpg
So you will need the basic set of tools for this project : a soldering iron, some solder wire, a cutter, a needle nosed plier,some wire, wire striper, and some desoldering tools if you need them.

For the matrix you will:
1. 144 LEDs
2. 24 resistors( The value is determent by the type of LEDs, in my case 91 ohm)
3. 4017 decade counter
4. 6 1KOhm resistors
5. 6 2N3904 transistors
6. A long Perfboard
7. Arduino
8. 3 x 74HC595 shift register
10. some pin headers

rmaduki1 month ago

if added 24 columns led again,, change this number to 48 ( and you have added 3 pcs of IC 74HC595)

sketch loping txt matrix.png

I am trying to get my 48x6 matrix to work and I changed the 24 you highlighted to 48 but it still doesn't work... Any other sugestions?

check wiring and schematic

samob12 days ago
samob3 years ago
Hi!
Very nice project! I built a 40x6 matrix with 5 shift registers and now i spent 3 days trying to modify your code to my matrix. Any hints?
ewalbster samob12 days ago

I also need help I'm trying to get my 48x6 to work. My email is ewalbster@gmail.com please send me working code if anybody has it. Thanks!

Syst3mX (author)  samob3 years ago
It's going to be tricky to modify my code because it was made for a matrix for 24 columns of LEDs or less, because I was lazzy to come up with something universal. You would need to work out a way to divide your 40bit word in to 5 shift registers and find a way to scroll that world.
The scanning part of the code is pretty much the same and needs only 3-4 modifications, if you still having problems send me your email and I will try to help you out.
samob Syst3mX3 years ago
Ok, thanks, i sent you a PM

sir,, send me too. hasanbasri1493@gmail.com

about your project 40x6,,

thanks,,

rca_dj1 Syst3mX2 months ago

Sir.. I and rca123 is in the same group we modified a 24x6 Led Matrix of yours 48x8 but we cant scroll a text till 48 rows, the scrolling is only for 24 rows.. please help us Sir.
send us in our account for more tips (choyenspandanon@gmail.com)
we will appreciate your help for the improvement our group project thanks

Hi, I've build 24x6 matrix but i want make 40x6. Would you like send me your code 40x6 matrix?. my email : sltnkarim@yahoo.com.

Thanks alot

rca123 samob2 months ago

hey we have the same problem too.. i made a 48x8 Led matrix but still i can't modify the code to have it. need help.. :-)

ezz91714 days ago

HI i am currently testing the led display and i am having some troubles lighting up the first 8 leds in the matrix, they light up but they arent very bright did anyone have this issue and would just changing the resistor value for those 8 brighten them up??

ezz91715 days ago

was wondering how you could test this with the code? can you just hook up 10 * 6 and connect accordingly

schulzecd1 month ago

do you know the size of the perfboard you used? Or any info on the dimensions of your display?

Fachasaurus1 month ago

Hello all. I am having this new issue now. The message that is displayed is supposed to be HI WORLD but when I run the program, all the lights in a single letter block light up. Just a huge 5x6 rectangle. I can faintly make out HI WORLD, but the other lights are also lit up so its hard to tell. Does anyone have any idea as to why this is happening? Could it be that my resistors are not large enough for this? Thanks for taking the time, appreciate any advice at all!

1.jpg

don t use 2N3904 transistors. use ULN2803A then it will be ok. i had the same problem .

Thanks for the suggestion! I tried using this transistor but I still had the same problem. I am not sure what else it could be. I was under the impression that it was the resistors on the LEDs but that didn't seem to solve it either.

I think I will have to reassemble the LED board. But I am not sure that will solve my problem since all the lights are coming on either way.

If anyone has some more suggestions or advice, I would appreciate it greatly!

led matrix don't use the Arduino

thw1231 month ago

plz giv me instructions abt 24x6 LED matrix and its code

THANK YOU

12032014121.jpg
QuincyC1 month ago

Would the Arduino Micro be usable with this?

Steve25 QuincyC1 month ago

Yes its arduino based

Pode Ser o Aduino UNO?

Amigos eu Quero fazer, porem quero saber se esse Led Servi http://produto.mercadolivre.com.br/MLB-541354770-kit-100-led-alto-brilho-5mm-100-resistor-frete-gratis-_JM

M.Hawse1 month ago

Thanks for taking the time to share this project with everyone. I like how you used the decade counter. Well done.

lgomez151 month ago

Hi , I have a question how can i enable the keyboard? i just want to type the word in the code so that it work. i will appreciate your help thank you

You2131 month ago
How much did it cost to get all those leds

you can make a search on eBay..

I successfully made a 24x8 matrix by making some changes to the code. Thank you syst3mx for the code!

Hey.

Could you please send me your code for 24x8 led display?

My mail is ali051292@gmail.com

thanx alot

I'll email my modified code to you. But there's another i'ble below I found after I edited my code. Its from astroboy907. Its can hold more words

http://www.instructables.com/id/Make-a-giant-LED-sign/

cod2897222 years ago
Could someone please help? I was wondering if and how this could be adapted to a 40x8 led panel. I am a complete nubie, so any help would be aprriciated. THANKS!!!
Did you ever get this code? Can you share it?
Program@londonaccess.ca

me too..

choyenspandanon@gmail.com thankzzz

rmaduki made it!2 months ago

using the looping txt

PIC-00015.jpg
shaadmahmud2 years ago
this project is working now.....but i have a lil problem my text r mirrored.....and only looping text.txt file is working but now it works.txt is not working at all...please help me...i have an arduino with atmega168....
Syst3mX (author)  shaadmahmud2 years ago
some people had the same problem with the mirrored text and thats because you wired up the shift registers and LED backwards.
So you fix it you need to change the order of the LED rows i.e. the first row need to be the last one.
No for the works.txt code all you need to do to make it work is to change the 100 in this array : byte patterns[100][6];
to something smaller like 50 or 25
thanx for ur reply...the text r now working...but in works.txt i've change the patterns[25][6]...but its stil not working....:(
Syst3mX (author)  shaadmahmud2 years ago
Does the basic serial functions work? try the example one in the IDE.
I think the ATmega168 should have the space for this program but if not I will write something in 3-4 days from now.
Pro

Get More Out of Instructables

Already have an Account?

close

PDF Downloads
As a Pro member, you will gain access to download any Instructable in the PDF format. You also have the ability to customize your PDF download.

Upgrade to Pro today!