Thursday, December 2, 2021
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These thin films come with the benefits of better light reception and electrical conductivity, besides being environment-friendly.  Traditionally, semiconductors made from silicon have been used for creating materials that conduct electricity. Now, scientists from the University of Buffalo, the U.S....
The minuscule LED night marker presented here is an automatic light beacon that wakes up at night, or when there is not enough ambient light in its environment. Anyone active in the dark (walking, riding, swimming, etc) can utilise...
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...
This article describes how to build a 4x4x4 RGB LED CUBE (Fig. 6) that is controlled by Arduino. Cube construction We need 64 common cathode RGB LEDs for our cube. Test all LEDs before soldering. Bend all the leads out 90...
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...