Instructables
Picture of Make a 24X6 LED matrix
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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! 





 
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Step 1: Getting All The Right Things

Picture of Getting All The Right Things
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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

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Rudia16 days ago

MASTER,....help me LED MATRIX 48X6 ARDUINO....rudiantobintang2587@gmail.com...please

Rudia16 days ago

MASTER,....help me LED MATRIX 48X6 ARDUINO

Chiliman125 days ago

How comes the multiplexer only requires two arduino pins? Doesn't it need three?

TomásB28 days ago

hi ! nice project, can you send me the code in my e-mail ? keviin14.-@hotmail.com

Thabo1929 days ago

Nice project ,Can i replace 74HC595 shift register with 74HC164

jtan251 month ago

SystemX, im planning to make 80x6 led matrix. I followed all your instruction for 24x6, it work for 24 column. Can you send a code that can easily modified if i'm planning to add more column.

my email address is yohanneswoo10@gmail.com

dgomez191 month ago

Great job...

It is possible display static text whit this circuit??

Thanks

gabriele21 month ago

I could help my project only does this is one of 24x6 and my arduino MEGA 2560 is already off and went back again to connect everything and nothing

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rca_dj11 month ago

could you help me do my 24x8 LED matrix using only 74hc595 in all collom and rows, cant fid a way to use serial monitor cause my text that to be display is in the code, i would like to use serial monitor for better usage.

please help me

my account: choyenspandanon@gmail.com

tahmed181 month ago

I am planning to make 20*10 leds displaying message ( in marque or like Equalizer design), if possible can u send the program code and material which i need to make mini project.Thanks

My Mail ID: tanveerahmedece@gmail.com

gabriele21 month ago

sorry I could help I chose this project because it is very interesting, we load the programming but the only thing it does is it just lights the first row of LED's other ranks fired very little, not if you can help me my MATRIX is 24X6

hi please can you send me how can i programmer matrix led with micro C thinx

hi please can you send me how can i programmer matrix led with micro C thinx

pink.libre00@gmail.com

BuffaloFan32 made it!5 months ago

I made this and it works great! However, it is one of my first projects and I am still a novice. I would like to be able to scroll stock quotes from the internet on it while I am at work as I work for a bank. The problem I have is that my company won't let me install any drivers on my computer or the Arduino software. Is it possible to send the stock quotes through a USB cable to this thing? I was thinking that I could write code in VBA or python that sends signals to my USB port and then the Arduino or an ATtiny could 'sense' those signals and interpret them and then scroll the information.

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Syst3mX (author)  BuffaloFan325 months ago

First of all great work!

You need to have a driver installed USB to COM port for this to work.

To make it work from USB only will be a lot harder, you need a special library for this to work it's called the "V_USB", but it's not going to be very easy.

Actually, a simple USB to UART converter bridge works wonders. Unfortunately, I don't think the drivers come installed with a base install of the Windows OS (unlike most Linux distros).

samob6 months ago
paramus samob3 months ago

Thanks samob and Syste3mX. I have successfully upgraded 24x6 matrix to 48x6. But I'm trying to make 64x6 led matrix. Which part of code should I change to make it work. I am using AVR atmega32 instead of arduino but the code is pretty much same. PLZ Help.

paramus paramus3 months ago

here is my email paras.maharjan@gmail.com

anayak53 months ago

sir i make this its not work properly when i run its leds are on but not a charters are show on display same only vertical line in runing why pls help me my email id is atul.nayak22@rediffmail.com

Can someone please send me the source code by e-mail? antoniojunioalves@gmail.com will be grateful ... I have the source code in Spanish, but I can not compile, thanks.

ashutosh.roy4 months ago

In programming :
int latchPinPORTB = latchPin - 8;
int clockPinPORTB = clockPin - 8;
int dataPinPORTB = dataPin - 8;

why it is subtracted by 8 ???

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rmaduki7 months ago

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

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ewalbster rmaduki6 months ago

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?

rmaduki ewalbster5 months ago

check wiring and schematic

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 samob6 months 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 Syst3mX8 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

daengSikki samob7 months ago

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 samob8 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.. :-)

ezz9176 months 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??

ezz9176 months ago

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

schulzecd6 months ago

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

Fachasaurus7 months 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!

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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!

cjayawardena6 months ago

led matrix don't use the Arduino

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