Picture of Arduino – LED Cube 3x3x3
In this tutorial I’ll show how you can create your own LED Cube 3x3x3. I’m sure you already saw some similar projects to this one but you never took action and made your own. Now it’s time to make your own!

By the way you can find more project here:

Watch this Demo Video of my project:

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Step 1: All Parts Required

Picture of All Parts Required
  • 1x Arduino Board
  • 27x LED’s
  • 1x Stripboard
  • 3x 22k ohm Resistors
  • 9x 220 ohm Resistors
  • 3x NPN Transistors (for example: 2N2222, BC547, 2N3904)
  • Wires
(I included a picture with all the parts)

Step 2: Video Tutorial + Schematics

Picture of Video Tutorial + Schematics
If you follow my video tutorial I think you'll understand how you can finish each step! If you have any problem please leave a comment below. (I also included my schematics in the pictures)

Step 3: Upload Source Code

Picture of Upload Source Code
Download the library here.

Be sure to download the library and unzip it to libraries. If everything is correct you should find an example in the Arduino IDE software under File > Examples > LedCube > ledcube.

Upload that ledcube example!

Step 4: Final Product

Picture of Final Product
That's the final product!

Did you enjoyed this project? 

Make sure you share this project and leave a comment below... It helps me a lot!

P.S. If you enjoyed this tutorial perhaps you might like my next ones. (Make sure you visit my website for more projects just like this one)
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onderyilmaz made it!22 days ago
It's working :)
BerkayY126 days ago

It works on Arduino Mega Board as well. Thanks for sharing.

c4s61 month ago
BenG61 month ago

Hi Rui,

I am ordering parts to make a led cube, and I was wondering what size wire you used.



The program doest work to me. What is the problem with code?
OMG! this is incredible Im new in this app and I wanna do everything! haha I like your project. Good job.
RuiSantos (author)  Charlie fl 1 year ago
thanks so much for your feedback! Let me know if this project worked also for you :) I already had some subscribers trying and sending me pictures of their projects.

hey question... do you use 3 different resistors?

question ... do you use 3 different transistors?

question where does the

  • 3x 22k ohm Resistors go ?
eshan.wells2 months ago

Note to good friend in Saudi Arabia, You have come to the correct instructable. Give yourself a pat on the back!

botgames2 months ago

It works!!! I spent 2 days building my cube and I'm so happy to say that it works! Thanks for the video tutorial. It made it a breeze to follow and build. It may not look perfect but I love it. Thanks again!

crazyjohn.neji made it!2 months ago

the code are wrong and i got 1 column wont light up

eshan.wells2 months ago

Where do the 3 22k resistors go, they dont apppear to be on the schematic

though i am assuming they are put on the gate of the transistors to prevent a short, right?

linusnelson007 made it!2 months ago

Thank You !!! ,Its Works Sooo Goood... :-)

KevinsL12 months ago

i am a filipino 14 years old.

hi im john caesar . plz make a instraction step by step for me i like your work and i like it to present in our school project.

UsernameCheck710 months ago

Hi there,

This was one of the most helpful guide to a led cube. I made every thing but now I'm stuck at the coding part. When I bring the led cube example you gave us to the ardunio desktop, it don't let me transfer it to the board because it has bunch of errors. The Errors are:

ledcube:15: error: 'LedCube' does not name a type

ledcube.pde: In function 'void loop()':

ledcube:48: error: 'cubeFrame' was not declared in this scope

ledcube:48: error: 'f' was not declared in this scope

ledcube:48: error: expected primary-expression before ']' token

ledcube:48: error: expected primary-expression before '{' token

ledcube:48: error: expected `;' before '{' token

ledcube:195: error: expected `}' at end of input

I'm making this for a school project and is due in a week so your help would be very nice. Please reply back....

P.S you guides are some of the best one, with a lot of help and details.

I have the same problem, how did you solve it?


I don't know if it helps but I had the same problem until I loaded the program on a windows 7 computer. I don't know how it works differently but, I can verify that it does work. For the windows 8 computer I had to write my own (very sloppy) program. It works though (kind of).

JasonR44 months ago


This was pretty much my first project away from the tutorial books.

worked out fantastic, I ended up putting some header pins at the front to connect everything up.

hai RuiSantos.
I have problems during the process of uploading the source code to the Arduino, how do I fix it?

dheidrich8 months ago

Nice Work Men. It works without problems. THX!!!

The final cube.
andree19 made it!10 months ago

Made it! :D

_sugan_11 months ago

I followed the instructions strictly but only the top layer works. Is it the program? Urgent HELP PLEASE!!

It's possible your bottom 2 layers aren't properly soldered together or ground right, or perhaps you have the wrong connection on your transistors

tekteach111 months ago

Awesome and works great!

kiranrs11 months ago

thank you man , i made it its awesome but i checked all the LED's while installing but later in the topmost layer 5 leds fused and is not lighting , i must look onto it, otherwise an awesome project

bresser1 year ago

Ok quick question. This is my first electric prototyping project so forgive me if what I ask is a stupid question. I understand that from the 220 ohm resistors they go to each of the bottom nine anodes(since all three layer's anodes are connected to each other) but what are the yellow wires going to the resistors going to. Digital outputs on the arduino uno? Also what goes to and from the transistors and where are the 22k ohm resistors? Final question is it okay if i use 330 ohm resistors instead of the 220's?

gzip1 year ago
A little credit would be nice. ;)

Official code location is:
RuiSantos (author)  gzip1 year ago
Hi gzip!
I'm sorry I never saw your instructable I've found your code on github while searching there.

All the credits in the code go for you I didn't change anything.
I'll make sure I update my insctructable though to give you the proper credit then. I just made a direct download link because some people don't know exactly how github works, that's all

Sorry again,
All the best,
I am having some trouble downloading the code, so is there another way I can get it?
Here you are:
donce161 year ago
Very good tutorial!
Hmm, little question, where you add 22k ohm Resistors?
Okay, so I have constructed the cube, and am ready to program. However when I do a simple test of the 3 column in the the third layer, the 2 other Leds light up. I am not using the recommended resistors because i have not had the chance to buy some. Could this be the cause of my troubles?
RuiSantos (author)  cheesecurd18991 year ago
Thanks for trying my project!
Sorry for taking so long to answer I was really busy for the past days.

Check all the connections again and see if it's everything soldered properly.
(you can use the diode feature on the multimeter) to see the connection.

Which resistor are you using... if they are much higher that can be a problem....

So 3 problems:
-> wrong resistors
-> LED's polarity
-> some connections missing
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