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Picture of Make a giant LED sign! (24x8 Matrix)
UPDATE!! Schematic is ONLINE!
UPDATE 2!! Code is ONLINE!

This project details my rather rapid build of a 24x8 matrix. 

My inspiration for this project came from Syst3mX's 24x6 matrix. A 24x6 matrix was huge, but it just was too small for me, as not much can be done in only 6 lines. My goal was to increase the line count on that display, so I could have a few extra pixels. 

Basically this is just a 24x8 matrix with a cool, interlocking foamboard grid that makes it possible to have a really big display. This display is 3 feet long, and just over a foot high! Thats half the size of a large, flatscreen TV! Plus, the whole thing is arduino controlled, so you can program it to do other cool things, besides just showing text! :)

I am just also a high school student, and i love to make stuff. So would you consider voting for this project in the current contests? Thanks!


Difficulty: This project will be pretty simple for an expert, but a beginner will struggle with it. Better for those who have had some experience with soldering/building circuits.

Cost: The entire project can be done for less than $70, much less if you already have an arduino board.

Time: 2 weekends or about 1 full season of Star Trek's work. 


 
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Did you know this was featured on belgian televison?

krzxsiek2 years ago
Please share your modified code for 24x8 for Arduino

i have created 24*10 perfectly running i have share codes soon i will upload more content stay tuned

@
http://www.instructables.com/id/2410-LED-MATRIX-PE...&
@

https://www.facebook.com/SparkingElectronics
how to extend to more than 24 column i have hardware upto 48 column but no code pls share code.

astroboy907 (author)  krzxsiek2 years ago
The first version of the code is up atm... will work on more code and refinements, but that should work.
Hello :)
Thank you for your nice project, I just wonder if I can have your help to make it 8x48 or 8x40 using 5 or 6 shift registers.. my problem is actually with the code .. I appreciate your help, it is urgent..
Thank you in advance. my mail address is: maroof.ph@gmail.com

i have created 24*10 perfectly running i have share codes soon i will upload more content stay tuned

@
http://www.instructables.com/id/2410-LED-MATRIX-PE...&
@

https://www.facebook.com/SparkingElectronics
how to extend to more than 24 column i have hardware upto 48 column but no code pls share code.

i have created 24*10 perfectly running i have share codes soon i will upload more content stay tuned

@
http://www.instructables.com/id/2410-LED-MATRIX-PE...&
@

https://www.facebook.com/SparkingElectronics
how to extend to more than 24 column i have hardware upto 48 column but no code pls share code.

branx861 year ago
Can you do more than 8 rows? If so how would you connect 4017?

i have created 24*10 perfectly running i have share codes soon i will upload more content stay tuned

@
http://www.instructables.com/id/2410-LED-MATRIX-PE...&
@

https://www.facebook.com/SparkingElectronics
how to extend to more than 24 column i have hardware upto 48 column but no code pls share code.

Tomahawk922 years ago
am i mistaken or do the shift registers on the bottom have 8 outputs on a side and the ones on top have 10?
astroboy907 (author)  Tomahawk922 years ago
Sorry for the late reply... The schematic or the board file?
both, one has 8 one has 10.
astroboy907 (author)  Tomahawk922 years ago
The 4017 has 10 outputs, so you can theoretically have a 24x10 matrix with this layout. I just did not have enough LEDs to make that though :)

i have created 24*10 perfectly running i have share codes soon i will upload more content stay tuned

@
http://www.instructables.com/id/2410-LED-MATRIX-PE...
&
@

https://www.facebook.com/SparkingElectronics
how to extend to more than 24 column i have hardware upto 48 column but no code pls share code.

But both of these have 8 rows.. I was just wondering why in the picture the right side of the 74hc595 has 10 legs on the right side in the top picture and 8 legs on the right side in the bottom picture
astroboy907 (author)  Tomahawk922 years ago
Simply the way the part symbol is in EAGLE. This page explains some more about it. The top picture represents the part symbols in the EAGLE library, the bottom picture show how the connections would be routed in physical reality. 
That's what i thought seeing as it had 6 on the left side. Thanks for confirming. Im building it as we speak =]
http://www.electronics-lab.com/projects/mcu/026/index.html
its 24*6 eagle file
I have made 32*8 hardwere succeess fully and all hardwere is ok but what to change in programming side?
astroboy907 (author)  TAPAN MOJIDRA1 year ago
Honestly, I don't even know. If you have the hardware right, I have been asked for help making a 32x10 matrix. I'd be glad to help you with the code where I can, but a lot of it I don't understand right now. Sorry for the super late replies, I've fallen pretty behind in my electronics hobby.

i have created 24*10 perfectly running i have share codes soon i will upload more content stay tuned

@
http://www.instructables.com/id/2410-LED-MATRIX-PE...
&
@

https://www.facebook.com/SparkingElectronics

how to extend column more than 24?

TAPAN MOJIDRA3 months ago

i have created 24*10 perfectly running i have share codes soon i will upload more content stay tuned

@
http://www.instructables.com/id/2410-LED-MATRIX-PE...
&
@

https://www.facebook.com/SparkingElectronics

seanpain45 months ago

what were the specs on the power supply you used

If i use the 5mm LED, 20mA, do nice effect?

Nichjay171 year ago
Cool
RIJO VADAKKAN made it!1 year ago

THANKS

12032014121.jpg
HLEV1 year ago

Hello. I'm having a hard time getting the code to work. Could it be
because I use Arduino Mega 2560 R3? I see the usage of SPI in the code,
and apparently Mega 2560 R3 has the SPI in other place.

I'm
super new to this, so could anyone point me out what should I connect
to which pins (if I'm right about my issue to begin with) of Mega 2560
R3? Thanks.

Mega2560_R3_Label-small-v2.png
profort1 year ago
As a continuation of the post above for myself. How much would it cost, can it be AC powered and what if I want maximum brightness.
Yes you can. You can use a 5v wall wart that supplys about 1 amp or more. ( You could use a cellphone charger too). For full brightness, I recommend that you use the resistor calculator below. (Use the 'Leds in parallel' option)

http://www.hebeiltd.com.cn/?p=zz.led.resistor.calculator
astroboy907 (author)  Hassanul_1 year ago
Thanks for this, I've been off the site for a long time. Sorry I didn't reply...
Hassanul_1 year ago
Thanks! Your code has more symbols then what Syst3mx had. Just what I needed
Tim20132 years ago
Can you post a link to the eagle files
astroboy907 (author)  Tim20132 years ago
posted! There is also a very basic board layout- I am not very good at creating layouts so do with that what you will.
24*6
http://www.electronics-lab.com/projects/mcu/026/index.html
http://www.electronics-lab.com/projects/mcu/026/index.html
opatil11 year ago
Can you send me the eagle schematic please?

http://www.electronics-lab.com/projects/mcu/026/index.html
I have made 32*8 hardwere succeess fully and all hardwere is ok but what to change in programming side?
I have made 32*8 hardware successfully and all hardware is OK but what to change in programming side?
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