LED Pixel Cube

Introduction: LED Pixel Cube

About: I like to make things for the internets. I also sell a pretty cool calendar at supamoto.co. You'll like it.
An LED pixel cube is a plastic container with an LED, battery and magnet on one end a translucent square of paper on the other. The magnet lets it stick to metal surfaces and the effect from a distance is that of a glowing square. Make a lot of these and you can start to draw an image. Make a ton of them and you'll even have a massive glowing QR code.

Really, we did this.

Step 1: What You Need

  • 2032 coin cell battery
  • white LED
  • neodymium magnet
  • plastic container
  • tracing paper
  • X-acto blade or other cutting tool
  • super glue (not pictured)
  • hot glue (not pictured)

Step 2: The Screen

To make the end of the box glow, it needs a translucent coating. Tracing paper is perfect for this and easy to apply. Just cut out the square to the same size. This is easily done by putting the container on the paper and cutting with a razor. 

With the square ready, apply tiny dabs of super glue on the corners of the box and press the paper down onto it.

Step 3: Add Magnet

To secure the magnet to the bottom, apply some hot glue inside on of the corners of the containers lid. Then drop the magnet on top and place other magnets underneath it to pull the interior magnet flush against the lid.

Step 4: Prepping the LED and Battery

Put the LED onto the battery. If it didn't light up, just flip the LED over.

Good, now the next step is to bend the LED so that the LED is facing up towards the anode (-) side. In other words, the flat side of the battery is down and the curved side is up.

With that set, tightly wrap electrical tape around it a few times.

Step 5: Put It All Together

Almost done. Drop the battery/LED combo on top of the magnet and it will be stuck together. Now just attach the body of the container and it's lit up!

If the LED is off center, just remove the lid and adjust the LED direction until you're happy with it.

That's it! Enjoy.

Be the First to Share


    • Digital Fabrication Student Design Challenge

      Digital Fabrication Student Design Challenge
    • Tinkercad to Fusion 360 Challenge

      Tinkercad to Fusion 360 Challenge
    • Stone Concrete Cement Contest

      Stone Concrete Cement Contest



    10 years ago on Introduction

    What I need to know is, can a tiny wireless switch be made to turn this on or off. I am making a terminator appliance and need to be able to turn it on or off. It needs to be tiny to also fit under the appliance..


    Wow that is neat! Reminds me of those LED Throwies... but with more of an artistic bent! Also love that the QR code actually worked!


    10 years ago on Introduction


    How many people did you have working on the QR image and about how long did it take? It looks spectacular. The video covers just a little about the project, just a little about making and a little about Instructables, it's brilliant!

    fungus amungus
    fungus amungus

    Reply 10 years ago on Introduction

    About a dozen people for two hours or so. Hard to say as the crew kept changing in size.

    What type of case did you use? I'm thinking of making a 3D projector with this.


    10 years ago on Introduction

    That's a good idea. my son is into star wars and I wonder how we can adapt this to make an r2d2.