# Cube of led: state of the art

If you don’t know yet what is a cube of LED, because a picture is worth a thousand words:
Here is an example

##### Results

On the Internet you can find videos of cubes up to the size: 32*32*32, which give a pretty good quality. On those cubes you can recognize a silhouette or the movements of somebody. You obviously can’t have details but if there are movements, it gives more information to your brain so it’s recognizable:
Here or there

You can even buy some here (thank you Helen 🙂 )

##### How to make

To control a 5*5*5 cube, with one color, we have 250 leads so they use multiplexing. The structure of the cube is done with the leads of the LED. The leads are bended and soldered together, as we use multiplexing we can connect leads one with another.

Except for the ones we can buy, all the cubes we found are connected to a computer, and the majority of the time they communicate through one or more Arduino. They are like screens where they put images created through Mathlab.

##### Interactions

The only interactions that we have found are with a Kinect. The Kinect is on a computer, images are processed by the computer and the cube acts like a mirror: click here.

In all other cases the cube is only a screen.

##### What we want

We would like to make a 12*12*12 cube, multicolor. We can use it in two different ways:

• With a computer. An Arduino will be linked to a computer which will do all the handling. The cube can be a mirror or we can play with it through the Arduino thanks to the movement of our hands for example. Here the cube is only a screen.
• Without a computer. The cube will be able to display animations given through a serial port. But we can also have interactions with him. With a gyroscope we will know the movement of the cube and play with that. Maybe we will have some sensors for other games.

Coralie Thourault

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