IR LED | Infrared LED | Infrared Sensor

An Infrared light emitting diode (IR LED) is a special purpose LED emitting infrared rays ranging 700 nm to 1 mm wavelength.  Different IR LEDs may produce infrared light of differing wavelengths, just...

USB LED Night Light

A typical USB LED bulb shown in Fig. 1 is a 5V, 5W USB-powered solid-state lamp. At the heart of this light bulb is a circular aluminium PCB made with a...
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Basics of Light Emitting Diode (LED)

In this video, the author is going to give you a tutorial on Light Emitting Diode (LED) basics. In this tutorial, he will be explaining basic construction, working applications of LED,...

LED-BASED MESSAGE DISPLAY

This LED-based message display is built around readily available, low cost components. It is easy to fabricate and makes use of 3mm red LEDs. A total of 172 LEDs have been...

How To Make RF Remote Controls?

Radio-frequency remote controls are inevitable. They are now appearing in great numbers owing to better user experience and by overcoming various drawbacks of infrared (IR) remotes including - line-of-sight pointing, short transmission range,...

EMO: The Light That Reflects Your Emotions

In the beginning of the Universe there was nothing. The void space was dark and it harboured no warmth of light. Then came a flash of glowing light and roaring thunder...

Controlling RGB LEDs To Get Million Colors In Your Pocket!

Many modern lighting applications need millions of colors. That is why we are finding RGB (Red Green Blue) LEDs all around us - in our phones, traffic lights, cars, advertising signs,...

PIR-Sensor Based Security System!

Passive Infrared (PIR) sensor based motion detectors have become very popular for intrusion detection in homes and commercial places. These sensors could be put to use in places like keyholes, kitchens,...

Lighting Industry Will Offer More Core Jobs for Engineers by 2020

The opportunities in India for engineers to bag core jobs might be limited, but lighting is an exciting and challenging field to work in, regardless of whether your interests are design,...

Display Brightness Control Using Ambient Light Sensors

With more than ever electronic products available today and accessible by consumers, Ambient Light Sensors have become an indispensable component for a variety of design needs. Poor environmental lighting or changing...