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An Infrared light emitting diode (IR LED) is a special purpose LED emitting infrared rays ranging from 700 nm to 1 mm wavelength. Different IR LEDs may produce infrared light of differing wavelengths, just like different LEDs produce light of different...
Modern lighting solutions are advancing at a fast rate and can deliver a host of benefits. With the advancements in technology and its integration with lighting solutions, today it has become possible to enable processes that were previously unthought....
This project turns on and turns off a laser LED after every second. It can also monitor its own supply voltage level. The circuit can be extended for use as an audio-visual alarm system for security applications. Keyes KY-008 laser...
Computer scanners and digital cameras, which can see, store and manipulate words and images, are the end product of a technological evolution that began with a single cell, a photocell, also called a photodiode, photovoltaic cell or photo site....
Wooden-case, battery-operated wall clocks with pendulums are available in the market. Some even have chimes. What is missing is the tick-tock sound of old mechanical pendulum clocks. Tick-tock sound generator circuit Shown above is the circuit of a tick-tock sound generator....
It is not just another Engraved LED lamp that you see on the market nowadays. This is an advanced version of that lamps. In the era of connected devices, I have made my own connected lamps. This project is inspired by Filimin:...
Ever wondered about the size of a salt grain? A single salt grain measures about three mil, which is a thousandth of an inch. Now, imagine a third of that size, placed on a printed circuit board (PCB). That...
This circuit is basically a short-range, infrared remote-controlled electromagnetic relay driver. It can be used to control door motors or solenoid-based locks using a compact and handy remote handset.
White LEDs are replacing the conventional incandescent and fluorescent bulbs due to their high power efficiency and low operating voltage. These can be utilised optimally for emergency lamp and vehicle turning indication. Presented here are white LED based emergency...
When power-supply polarities of an electronic device are accidentally interchanged, the device runs the risk of damage. The danger can be avoided by adding this tiny circuit to the power supply section of the device. This power supply reversal...