.08 Term Project Documentation: And Your Brain Can Sing [Luci Laffitte]


a night light that visualizes the frequencies of your brain waves through sound and light


During a full night of rest, the brain goes through 4-5 cycles of the 5 different stages of sleep. The brain produces different frequencies of brain waves during each stage. The types of waves are named: delta, theta, alpha, beta, and gamma, from lowest to highest frequency. And Your Brain Can Sing translates the frequencies of brain waves into more understandable frequencies such as color and sound. This allows the user a whimsical glimpse into the brain and builds the mental connection about the types of waves in our world.

How It Works:

I hacked the headset on the mindflex game to sense the different brain waves. The device produces eight values: delta, theta,  low alpha, high alpha, low beta, high beta, low gamma, and high gamma waves. These values are inputted to the arduino and mapped into a useable format. The mapped values are used as an input to depict brainwaves through color and sound. The lowest frequency brain waves correspond to the lowest frequency color (red) and tone (C3). While the highest frequency brainwaves correspond to the highest frequency color (blue) and tone (C8)


And Your Brain Can Sing Posters

(For more information)


Mind Flex Set

The Arduino

The Breadboard

The Inner Workings

The LEDs

The LED Diagram

The Night Light and Headset

The Circuit:

The Circuit


Arduino Sketch: <a title=”Arduino Sketch: Night_Light_Code_Four” href=”http://code.arc.cmu.edu/~cheng/uploads/Night_Light_Code_Four.pde&#8221; target=”_blank”>Night_Light_Code_Four</a>


The head set:

– 1 mindflex headset

-wires and solder

The night light:

-(4x) red, yellow, green, and blue LEDS

-(5x) conductive layers  made from tin foil and illustration board (one for each color of LED, and ground)

– a piezo speaker

-a mini breadboard

-a central support dowel

-a base stand


~ by lucilaffitte on May 10, 2010.

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