8x8 LED MATRIX DISPLAY | ARDUINO | BLUETOOTH CONTROL

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About: i love electronics and enjoy making tutorials so that i can share my experience with others :) ALTHOUGH THE TRUTH IS I LOVE IT WHEN PEOPLE SAY THEY LIKE MY WORK ☺

In this tutorial i show how to build a 8 x 8 LED matrix using an Arduino .

DO COMMENT WHAT YOU THINK ABOUT THIS INSTRUCTABLE,SO THAT I CAN IMPROVE IN MY FURTHER INSTRUCTABLES

have a look at the video tutorial for a better understanding of the entire tutorial.

PARTS NEEDED:

☻LEDS( 64 PCs)

JUMPER WIRES

☻CARDBOARD PIECE(16 CM BY 16CM)

ARDUINO UNO

LAPTOP OR PC (FOR UPLOADING CODE TO ARDUINO

POWER SUPPLY ( I USED A POWER BANK TO SAVE BATTERIES)

Step 1: ASSEMBLE THE CIRCUIT USING CARDBOARD SHELL

PUT IN ALL THE 64 LEDs IN THE CARDBOARD PC AS SHOWN

Step 2: SOLDER THE LEDS AS PER THE CIRCUIT DIAGRAM

FIRST SOLDER THE POSITIVE TERMINALS OF THE LEDS ROW WISE

NEXTBENDTHE NEGATIVE TERMINALS A LITTLE BIT AND SOLDER THEM COLUMN WISE (AS SHOWN) ACCORDINGLY.

EDIT: JUST ADDED FEW EXTRA IMAGES TO UNDERSTAND THE SOLDERING PART A LITTLE BETTER

Step 3: SOLDER JUMPER WIRES AND POP THE CIRCUIT OUT

SOLDER 8 JUMPER WIRES IN THE ROWS AND 8 JUMPER WIRES IN THE COLUMN .

FINALLY POP THE CIRCUIT OUT OF THE CARDBOARD SHELL

Step 4: ARDUINO

CONNECT THE AURDUINO WITH THE LED MATRIX

CONNECT EACH OF THE COLUMN TO PIN 2,3,4,5,6,7,8,9 RESPECTIVELY

ALSO,CONNECT EACH OF THE ROW TO PIN 10,11,12,13,14,15,16,17 RESPECTIVELY.

FINALLY UPLOAD THE FINAL CODE TO THE AURDUINO THROUGH THE CONNECTING WIRE

To download the final code go to the below link :

https://drive.google.com/open?id=1rQIDh56OnBVF2rqVtHd0UK7_qQ4WNjcZ

Step 5: CONNECT BLUETOOTH

CONNECT THE BLUETOOTH DEVICE HC-05 TO THE AURDUINO:

connect rx of bluetooth to tx of arduino

connect tx of bluetooth to rx of arduino

vcc to +5v

gnd to gnd

Step 6: Download Android Application

download arduino bluetooth controller from playstore

Step 7: Let's Play With the App

click on connect and select your bluetooth device .


congratulations!! you have a working led matrix display controlled via bluetooth

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18 Discussions

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azizabzi

10 months ago

Can we not use 8x8 matrix LEDs instead of assembling 64 leads in the matrix form? It makes things easy. I hope your code should still work.

3 replies
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magichtgazizabzi

Reply 10 months ago

YOU MAY BUT THE CODE WON'T WORK I GUESS...ALSO THIS IS MORE FUN TO ASSEMBLE :)

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azizabzimagichtg

Reply 8 months ago

Thank you for the prompt reply. I also believe that the code won't work.

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GourinathKmagichtg

Reply 8 months ago

I did everything with 8*8 matrix display.
Lights are blinking when we give commands in mobile.
What can I do now

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botgames

Question 8 months ago on Step 4

Hi, I can't open the sketch. I keep getting errors...Could not create the sketch and Failed to open sketch:"C:\Users\Office\Downloads\led_matrix_8x8 final code\led_matrix_8x8 final code.ino" Do you have another link to the sketch. I've spent 2 days making this and I'm really want to finish. Any help would be greatly appreciated.

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Newoldbuilder

10 months ago

Very nice. I voted for all 3 categories. What is the spacing of the LEDs?
Will the HC-05 work with the iPhone?

1 reply
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toasterizer

10 months ago

Nicely done. If you could put 3 or 4 of them together you could make a nice scrolling display.

1 reply
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magichtgtoasterizer

Reply 10 months ago

yeah nice idea...would try to do that soon :)

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magichtg

11 months ago

HOPE YOU LIKE MY INSTRUCTABLE...DO COMMENT SO THAT I CAN IMPROVE IN MY FUTURE INSTRUCTABLES