Tag: Led

Peter Demchenko @ edn.com This Design Idea circuit regulates the current through one or more LEDs, making it almost independent of supply voltage. Its main advantage is a very small dropout voltage, which can be less than 100mV. The design could find use on LED strips, where the...

This tutorial will show how to interface a 8x8 LED matrix with Arduino. Example code is provided. LED matrix displays can be used to display almost anything. Most modern LED sign boards uses various types of matrix boards with controllers. In this tutorial we are going to interface a...

Lumileds' second generation LUXEON CoB Compact Range LEDs feature an efficacy and output boost of up to 16% over its previous generation arrays. The devices cover different power range directional lamps such as a 35W-equivalent and a 50W-equivalent MR-16 lamp, achieving...

A Smart Night Lamp for kids. Tutorial and source code available: Few weeks ago I heard my nephew (aged 7) complaining of the dark at night. Basically he was afraid. So I decided to put knowledge into practice and build a night lamp for kids. Since the project was intended for kids, I...

Researchers have developed the first standard LED covering the full visible light, in collaboration with Nichia Corporation. LED and OLED lighting, which is generally called solid-state lighting (SSL), is becoming more common as the next generation lighting. Evaluations of...

Here is a 5 LED electronic candle using PIC12F508 able to power each LED with 20mA max. This candle produces a great effect and can be used either as a candle or inside a pumpkin. 5 channel LED candle using PIC12F508 -...

Jan Buiting @ elektormagazine.com discuss about a new technique used by scientist to build better LEDs. By manipulating the incident light, researchers of the Complex Photonics Group at University of Twente in Enschede, The Netherlands, have turned light propagating in a layer of...

In this article "Rui Santos" shows us how to configure Raspberry Pi as server and use it to toggle two LEDs over the internet. In this project you’ll create a standalone web server with a Raspberry Pi that can toggle two LEDs. You can replace those LEDs with any output (like a...