About: Ibrar Ayyub

Making Electronic Ink Two companies are simultaneously developing similar electronic inks — E Ink of Cambridge, MA, and Xerox in Palo Alto, CA. At first glance, a bottle of electronic ink looks just like regular ink, but a closer examination shows something much different. Although the two companies’ products vary slightly, here are the three […]

The great adventure that is building clocks continues.  Points of interest in this build is that it was the first chance I got to play with the dot matrix display I picked up over winter break, and it’s the first time I’ve soldered and used a surface mount package (albeit I soldered it to a […]

The temperature controlling system maintains a user programmable room temperature where air conditionars are not provided.For this purpose we need a cooler and a heater.Cooler is used for decreasing temperature and heater is used for increasing temperature.This project also shows the real time temperature in degree centigrate.It can be used in any season. There are […]

Linux has long been on the edge of breaking into embedded systems, but one barrier has been the lack of affordable development boards with fast enough processors and large enough storage to cope with Linux. In the last few years, the situation has changed and there are a number of low-cost development boards, each with […]

Building a Blu-ray Disc Blu-ray discs not only have more storage capacity than traditional DVDs, but they also offer a new level of interactivity. Users will be able to connect to the Internet and instantly download subtitles and other interactive movie features. With Blu-ray, you can: record high-definition television (HDTV) without any quality loss instantly […]

These tiny controller boards are build to provide a quick start for projects with 8 and 20 pin AVR microcontrollers, e.g. ATtiny13, ATtiny45, ATtiny85 and ATtiny2313. They don’t include any fancy stuff, they are just as simple as possible. Where is the problem? Whenever I was prototyping on a breadboard I was annoyed by all […]

If your school, or kids school, or other location relies on a central master clock that is broken, you may have a use for this device. New master clocks are available of course, but school budgets are under extreme pressures, and it really is a satisfying project if you have the necessary skills. This master […]

This (SPI7SEGDISP4.40-1R) is a revised version of the previous SPI seven segment LED display (4 digit) board that displayed numerals and decimal points. The new version has a better quality seven segment LED display (LTC-4727JS) with three extra LED segments, as shown below. The additional colon segments are useful in projects where you need to display […]

DLP Technology DLP technology is based on an optical semiconductor, called a Digital Micromirror Device (DMD), which uses mirrors made of aluminum to reflect light to make the picture. The DMD is often referred to as the DLP chip. The chip can be held in the palm of your hand, yet it can contain more […]

All energy-harvesting-based systems need energy storage for times when the energy cannot be harvested (e.g., at night for solar-powered systems). Rechargeable batteries ‒ known as “secondary” cells to differentiate them from “primary” or single-use cells ‒ are usually specified for this task. For rechargeable batteries, however, battery management depends on the best possible measurement of […]