July 2018
Intermediate to advanced
240 pages
5h 24m
English
Content preview from 10 LED Projects for Geeks
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6Automated Infrared Remote Control by Kaas Baichtal
In this project, you’ll use infrared LEDs and a Raspberry Pi to automatically operate a remote controlled device.
HOW IT WORKS: INFRARED LIGHT
In the early 1800s, astronomer William Herschel discovered that sunlight split into colors by a prism is noticeably warmer the closer it is to the red end of the spectrum. However, the area of the spectrum beyond red is even warmer. It turns out there is another, warmer color of light—called infrared (IR)—which humans can feel but not see.
Infrared means “below red,” so named because it has a lower frequency (waves per second) than visible red light. The ...
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