Over time our CUBE4: 4x4x4 RGB LED Cube has found itself in a wide variety of situations - and another interesting example has been documented by John over at tronixstuff with his CUBE4: spectrum analyzer. The purpose of this is to show the levels of seven frequency bands of an audio signal at once - and have fun with plenty of LEDs.
As the cube already has an onboard Arduino-Leonardo compatible controller it was a simple matter to add an MSGEQ7 spectrum analyzer IC and external circuitry to enable measuring of an audio signal and pass it through to speakers or headphones.The results of which are demonstrated in the following video:
You can add this type of circuit for less than ten dollars, and gives an interesting display piece as well. To learn more on adding your own spectrum analyzer to the CUBE4, including the required schematic and Arduino sketch - visit the project page. And for more, we're on twitter and Google+, so follow us for news and product updates as well.
If you're interested in the cube used by John in his project, check out our new CUBE4: RGB LED cube kit:
It's easy to construct and use, and with an onboard Arduino-compatible board the cube can be used to display all sorts of data or create visual effects. It's easily controlled via simple text commands via the USB port - or write your own Arduino sketch. It's incredibly customisable and there's so much more. For more information and to order, visit the CUBE4 page.