LED matrix displays provide flexibility to display text, graphics, animations, and video, and therefore, they have become a popular mean of displaying information these days. You can see them at gas stations displaying the gas prices, or in the public places displaying information, and alongside highways displaying advertisements on large dot matrix panels. This project […]
Making a 8×40 LED matrix marquee using shift registers Read More »
The purpose of this project was to create a simple, portable device that would periodically read sensors and then store the sensor data so it could be retrieved later. The result is the HexiLogger, “hexi” because it can support up to six different sensor inputs and “logger” because it will store the input data on
HexiLogger, an Arduino based data logger using ATmega328 Read More »
Abstract: Travel to outer space sounds very exciting but now we are here in our space ship and we have about 10 square meters for 5 people. It will take another week until we reach the first space station. I took my mp3 player with me and after so many days of travel I have
An electronic dice using ATmega8 Read More »
You can use an LED as a photoelectric sensor. A previous Design Idea shows that such a switch is highly power-efficient, consuming almost no power (Reference 1). However, you cannot adjust that configuration to switch at the desired light intensity. You can adjust the circuit in this Design Idea to any threshold level of light
Adjust power-efficient LED switch to any light intensity Read More »
We enlarged our stock offer of well-proven LEDs in a PLCC-2 package with new improved types. KA-3528 series of SMT diodes is not a novelty and many of you may know it already for several years, however this series is being continuously enriched with new types. Kingbright as a reliable producer of LEDs always improves their specification, that´s
Universal SMT LEDs series KA-3528 will attract attention Read More »
Plymouth, England – 8th April 2013 – Plessey announced that samples of its Gallium Nitride (GaN) on silicon LED products (p/n PLW111010) are available today. These entry level products are the first LEDs manufactured on 6-inch GaN on silicon substrates to be commercially available anywhere in the world. Plessey is using its proprietary large diameter
Plessey is first to release GaN on silicon LEDs Read More »
Introduction The Saver V5.0 runs simple clock emulation program, turns a night light on and off with preset time, say 19:00 to 22:00 everyday. The design features low cost, easy installation, no battery backup and no EMI. The AT89C2051 uses external oscillator generated by schmitt trigger gate CD4093, ~680kHz. Reference frequency was derived from 50Hz
Night Light Saver V5.0 using AT89C2051 Read More »
The solid-state lighting (SSL) surge has created a concomitant boom market for electronics to drive LEDs in various different applications, ranging from incandescent-replacement light bulbs to architectural lighting to streetlights and more. These new driver ICs and modules do more than simply provide power in the form needed by LEDs. Some devices can perform additional
The Latest LED driving ICs and Modules Read More »
Inside the 7.5W 1,500 lm (200 lm/W) prototype, called TLED, there are separate red green and blue LEDs, and the green is particularly interesting. All made by Lumileds, a Philips spokes woman told Electronics Weekly, the blue (InGaN) and red (likely to be AlInGaP) are direct emitters.
Philips’ novel LED/phosphor combination hits 200 lm/W in warm(ish) white Read More »
Scanning the web on microcontroller based USB solutions, I stumbled over Objective Development’s freeware USB solution based on Atmel’s AVR architecture. I decided to build up their reference design PowerSwitch with an ATTiny2313 MCU. Since I never used AVR chips before, the first challenge was to set up a code development environment enabling me to
Atmel AVR-firmware based universal USB-Interface using ATTiny2313 Read More »
