The Laser Harp-Inator
Overview
This science experiment was conducted to demonstrate the capability of creating various pitches of sound through the manipulation of lasers, photoresistors, circuitry, and a synthesizer. A wooden frame, designed to accommodate the span of twelve laser beams roughly four inches apart, was constructed. An 80mW laser was placed at the center of the base of the frame. A diffraction grating was placed on the laser to split the beam into twenty-four separate beams. To accommodate the width of a human hand, which will be needed to interrupt the beams, photoresistors were placed at the sight of every other beam. Each photoresistor was then separately wired to a breadboard which was connected to an arduino microcontroller. The arduino microcontroler was connected to a computer which was in turn connected to a midi synthesizer. By interrupting the beam of light to the photoresistor, causing a decrease in voltage, the arduino communicated to the synthesizer to create a predetermined pitch.
Competition history
- ISEF 2014
Resources
Related projects
CSEF · 2011
Sound and Light
CSEF · 2005
Creating an Accoustic Guitar Pickup Using Optical Components
CSEF · 2005
How Can I Build a Nitrogen Laser and Prove that It Can Lase?
CSEF · 2018
Light on the G String: Novel Optical Pickup for Electric Cello
CSEF · 2003
Two Teens, a Laser, and a Garage: The Story of the Ten Dollar Interferometer
CSEF · 2008
Designing a Laser Communication Device
CSEF · 2002
Sculpting with Light: Applying Photonics to Create a Three Dimensional Image
CSEF · 2012
Burning Green Laser
Closest projects by meaning, across every fair and year in the corpus.
Browse more like this
Source: Regeneron International Science and Engineering Fair