Posts by Ibrar Ayyub:
How Facial Recognition Systems Work
Posted on: 15 Feb 2013
Facial Recognition Technology Identix®, a company based in Minnesota, is one of many developers of facial recognition technology. Its software, FaceIt®, can pick someone’s face out of a crowd, extract the face from the rest of the scene and compare it to a database of stored images. In order for this software to work, it […]
HAMMOND 1553T enclosures – keyboard and display in your hand
Posted on: 15 Feb 2013
In the Hammond 1553 enclosures series now can be found also types with a sufficient space for a keyboard and display. Series of ergonomic handheld enclosures – 1553is familiar to many of you. All types from this series provide a reliable grip thanks to a pleasant side overmold, they feature the same shape and they´re […]
How Record Players Work
Posted on: 14 Feb 2013
Edison’s Discovery In 1877, Thomas Edison and his assistants attached a needle to the diaphragm of a telephone receiver with the idea that the needle could be used to etch an impression of sound onto quickly moving paper, thus creating a recording or sound writing. Edison understood that sound is the vibration of particles across […]
Measuring motor speed and display result on LCD using ATmega8 microcontroller
Posted on: 14 Feb 2013
For measuring motos speed there can Optical interrupter used like H21A1. This is a device where IR LED and photo-transistor is coupled in to plastic housing. The gap between then allows interrupting signal with opaque material and this way switching the output from ON to OFF. This device can be connected to Microcontrollers ICP pin […]
Open source Lithium battery charger modules
Posted on: 14 Feb 2013
For a long time I wanted to enter the 21st century by stopping using NiCad or NiMH batteries and upgrading to Lithium accumulators as they provide more power per volume and are cool in general. Constant flow of obsolete cell phones provides a nice source of reasonably high-performance batteries for free – I felt compelled […]
How 4G Works
Posted on: 13 Feb 2013
Wireless’ Unending Evolution Wireless networks are hodgepodge of various and overlapping technologies. No matter how convoluted the acronyms, what it always boils down to is this — wireless networks are radio systems. You can read about the basics of cell phone technology in How Cell Phones Work and How Smartphones Work. No matter which wireless […]
Smaller Raspberry Pi costs under $25
Posted on: 13 Feb 2013
RS Components and Premier Farnell/element14 have Model A Raspberry Pis in stock as of this morning. (See the Where To Buy area on the right side of the page for links.) For the first tranche of orders, Model A will only be available in Europe. We’ll lift this restriction very soon so the rest of the […]
Swimming-pool ships make waves in modular robotics (w/ Video)
Posted on: 12 Feb 2013
(Phys.org)—University of Pennsylvania engineering Professor Mark Yim and his students in the Department of Mechanical Engineering and Applied Mechanics have been floating their robotic boats at the university pool after-hours as part of a Defense Advanced Research Projects Agency (DARPA) project. They have received funding from DARPA’s Tactically Expandable Maritime Platform.
How 3-D TV Works
Posted on: 12 Feb 2013
Seeing in Three Dimensions Why can you look at an object in the real world and see it as a three-dimensional object, but if you see that same object on a television screen it looks flat? What’s going on, and how does 3-D technology get around the problem? It all has to do with the […]
Revised version of the PIC12F microcontrollers breakout board
Posted on: 12 Feb 2013
The 12F series of PIC microcontrollers are handy little 8-pin devices designed for small embedded applications that do not require too many I/O resources, and where small size is advantageous. These applications include a wide range of everyday products such as hair dryers, electric toothbrushes, rice cookers, vacuum cleaners, coffee makers, and blenders. Despite their […]
