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Interactive color cube // get your hands on some RGB

This is a fun one! It's an idea I'd had for quite a while - as just an artistic sort of thing using technology. Then, the engineering department at my school hosted an "electronic display contest" offering cash prizes for neat gadgets they could put on display to draw interest to the electrical engineering program. In addition to a couple hundred bucks cash for first place, they offered up to $100 parts reimbursement. So all in all, I won $273 for this little cube - and I finally had an excuse to build something for fun :-)

Here's a video of it in action:



The idea behind the color cube was to have RGB LEDs where each of the channels would be controlled by one of the 3-axies of an accelerometer. Using white acrylic to construct the cube, the 54 LEDs (9 on each face) were diffused into a nice glow.

And here's a quick look at how I created it.
The squares of 3/16-inch acrylicEach LED was sanded to diffuse the three colors insideThe acrylic cubeNice and translucentOnce face of RGB LEDsAll the pins tied togetherA quick test fitThe 4 pins of each row soldered upAll the LEDs installedThe inner cube folded upEach row of three soldered togetherThe accelerometer PCBThe led driver circuitry built ugly style on the other sideThe entire circuitReady to be folded inside the 2-inch cubeInner cube with tabs to center it in the outer cubeThe cube of LEDs inside the 4-inch oneA quick test before sealing it upThe completed cube, and a shadow box for it in progressThe finished project, ready for displayLight blueBlue-ish purplePinkish purpleYellow greenLight aquaWhitish

So there you have it! It was exciting for me to have this idea finally come to life! Please view the video and comment :-)
curly

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