Make Your Own LED Matrix !

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Introduction: Make Your Own LED Matrix !

About: Hi, I'm Nemeen, Electronics Enthusiast! I have seen a huge decline in electronics hobbyist in past few years. I started this channel in order to inspire you to create. Hopefully, you will find something that …

I had dozens of led lying around and didn’t know what to do with them, so I decided to build a Led matrix that can display anything you can think of,

So let's get started!


Refrence - https://www.instructables.com/id/Make-a-24X6-LED-m...

Step 1: Watch the Video !

If you don't want to read all the stuff you can watch my video.

Step 2: Everything We Need

Step 3: Matrix Theory !

If you don’t know what a LED matrix is here is a very simple explanation for it,

If we connect the cathode of a LED to –ve of supply and anode to +ve of supply this will be a 1X1 matrix. Which consist of 1 Row and 1 Column.

Similarly now if I take 2 LEDs and short their cathodes this will make 1X2 Matrix and If I add another row to it it will make 2X2 matrix but this time we will short all the cathodes of the LED row-wise and anode column-wise.

Using the same concept we are going to make a matrix which consist of 6 rows and 24 columns

Step 4: ​Schematic and Gerber Files

If you want to edit my pcb you can do it here

https://easyeda.com/nematic.business/246_LED_Matri...

Step 5: Soldering the Matrix !

Place 24 LEDs in a row with Anode on the top side and then flip it and solder anode and cathodes to the points then trim all leads,now short all cathodes of LEDs you can also make a track but I prefer using silver copper wire. Now repeat this process for next 5 rows

Now its time to short all the anodes column-wise. If you don’t have a silver copper wire you can bend the legs of LEDs and solder them

Step 6: Soldering PCB !

Already looking at the complexity of this project which includes 3 shift registers,a 4017 counter, 6 transistors, an Arduino Uno and dozens of resistor I decided to make a PCB which I designed in EasyEDA and Ordered through JLCPCB.

Once PCB arrived first I did some continuity test to make sure everything is proper and according to the circuit and then finished the soldering process.

Step 7: Connections and Programming

In the end, I used male-female headers for the connections and connected everything using wires.

Program for the matrix was originally made by Instructable user Syst3mx,

Update 06/12/18: I have made the modification to make it work for 24 Characters

And it is very simple just use excel file and make all the words or numbers you want, copy it to the code in #define line and edit a line below and you are done!

Step 8: Thank You

If you like my work

Feel free to check out my YouTube channel for more awesome stuff:

https://www.youtube.com/c/Nematics_lab

You can also follow me on Facebook, Twitter etc for upcoming projects

https://www.facebook.com/NematicsLab/

https://www.instagram.com/nematic_yt/

https://twitter.com/Nematic_YT

Check out JLCPCB
$2 PCB Prototype (10pcs,10*10cm): https://jlcpcb.com


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    14 Discussions

    1
    sanketmore164
    sanketmore164

    10 months ago

    Hey,hii
    Can u help me with the coad ur provided,
    I want to implement it on the Arduino nano,what changes you suggest I do.

    2
    dasharatha karthik
    dasharatha karthik

    Question 12 months ago

    bro can u please send me a code for
    DASHARATHA KARTHIK NTTF
    Please bro pleae its very urgent can u please sent how fast u can
    bcz i dont know binary code of letters to edit

    0
    sergiño68
    sergiño68

    Question 1 year ago on Step 7

    Hola que tal?.mi pregunta es que si es posible hacer mas extensa la matriz led?

    0
    richitomoreno2006
    richitomoreno2006

    Question 1 year ago

    How do you know the number of the column on the matrix? :(

    0
    Yoruk
    Yoruk

    Tip 2 years ago

    My tip : test the leds one by one (with a resistor) to make sure that they are all right !

    0
    El_mot
    El_mot

    2 years ago

    The design might be much easier if specialized LED drivers are used. For instance I used 16 channel stp16cp05. With chips of that type you may get rid of resistors, usually the driver require the only one resistor per all the channels.

    0
    iceng
    iceng

    Reply 2 years ago

    Thanks so much for the useful driver info !

    ( SO-24 still available for $1.97 small quantity/Digikey )

    What power supply voltage did you use for LEDs ?

    I was one of the finalist judges in your

    https://www.instructables.com/id/Electronic-Barome...

    You should have done better, but then I only provide a single score point..

    Best Regards,

    A

    0
    El_mot
    El_mot

    Reply 2 years ago

    I had two variants of the device. IIRC, the driver worked well from both 1S or 2S LiPo batteries. That means any voltage from 3.0 (almost discharged 1S) to 8.4 V (fully charged 2S). You may find the device description at http://www.randomrace.ru/2015/gsbc/preparation/tra...

    PS Thank you for your support during the contest. It looks like all the finalists projects were great, all of them deserved prizes.

    0
    iceng
    iceng

    Reply 2 years ago

    Thank you for the pleasure of my reading your very clear EE progression in the Randomrace.. Your GFSK packet power sequence as a distance aid for walkie-talkie is most excellent..

    On a side note it is great surprise that you also use hot glue in shrink tube as self closing moisture proof package solution..

    Best Regards,

    Alex

    0
    ObsidianSheep
    ObsidianSheep

    Question 2 years ago on Step 8

    Hey bro it seems like you are from India,I am Indian too! :p.
    Ok I want your help for the 56x8 LED matrix code of the project from which you have taken reference.
    Email ID : cadman3110@gmail.com
    I am going to complete that project soon but I cant find modified codes for it,I think you can help me out.
    Thank You.

    1
    sspadda
    sspadda

    2 years ago

    Great Tutorial for a novice like myself, good Job Bruv !!

    1
    mahesh_jo
    mahesh_jo

    2 years ago

    You have made an excellent video Nematic. Excellent photography, nice explanation. I am going to make it.