The purpose of my project was to
get and LCD screen taken from an analog alarm clock to light up when a
microphone connect registers a change in noise. When the microphone is directly
interacted with, such as blowing on it, tapping it or talking to it very
closely, the lights registered the change in volume and begins to flash
rapidly, as if your interaction stimulated then screen.
When music is played to the
microphone, a pattern in the screen is shown. When the music has louder drums
or beats, the lights will play faster. Between these, if the music was quieter
and slower, the lights wouldn’t play as frequently. Therefore, the prototype
has been nicknamed “Musical Lights” (with reference to Musical chairs – When
the music stops, so do the participants).
This was achieved by connecting the
lights of the screen to two shift register microcontrollers that decreased the
number of pins connecting to the Arduino to five instead of 20. The microphone
was then connected to the Arduino also with a 100x amplifier that made the
audio waves easier to register.
The video shows one particular
song, Keep Hope Alive by Crystal Method (full credit). The techno type of music
is most effective in creating these patterns, as there is an audible beat that
the lights can duplicate.
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