pvredator gilad lotan physical computing without computers
Post on 26-Mar-2015
225 Views
Preview:
TRANSCRIPT
Pvredator
Gilad Lotan
Physical Computing
without Computers
Initial Concept
Aram Bartholl, random screen
Hong Kong Lantern Festival
Light Equinox at Chichen Itza, Mexico
Light-Shadow snake (spring & fall)
Manhattanhenge
Looking west along 42nd Street (Manhattan) at 8:23 p.m. on July 13, 2006. This photo shows the sun lined up with the center line of 42nd Street. It actually set slightly to the right. It set on the center line on July 12.
Solistice & Equinox
• Solistice – twice a year when the sun is at its greatest distance from the equatorial plane
• Equinox – the sun directly above the equator• Many cultures celebrate the winter and summer solstices
(e.g. Christmas).• Jewish cultures celebrate especially the equinoxes (
Passover and Rosh Hashanah); in Japan, all four major season days are celebrated (Setsubun).
• Winter solstice festivals (Yalda, Saturnalia, Karachun, Hanukkah, Kwanzaa and Ásatrúar).
• In most cultures the solstices and equinoxes do not determine the start but the midpoint of the seasons.
Inspiration
Goals
1. Build an object that reacts according to the amounts of current it receives.
2. Raise awareness towards a more sustainable usage of energy
The Photovoltaic Effect
• sunlight photons free electrons from common silicon
• first discovered in the 18th century
• N-type, silicon w/phosphorus = more electrons, -
• P-type, silicon w/boron = less electrons, +
Drawbacks of PV cells
• The use of silicon crystals in the Photovoltaic cells makes it expensive.
• silicon crystals are currently assembled manually. Secondly,
• silicon purification is difficult and a lot of silicon is wasted.
• silicon cells require a cooling system: performance degrades at high temperatures.
• Research is underway for new fabrication techniques (like those used for microchips)
Going Cheap
First try
The Miller Solar Engine
Future ?
1381 Solar Engine
Solar Engine
Solar Charger
Battery Charger
Using a Schottky Diode (1N5818)
top related