Alarm system -an example using the Omron PLC C28K
To put it simply a PLC (programmable logic controller) is a small computer, but, differently from a PC, it must interface to electric circuits and not to a man. Its microprocessor expects to get signals from electric devices as buttons, alarm contacts, level signals etc. and not from a mouse or a keyboard.

The use of an inverter in air conditioner technology is an innovation. Generally speaking, an inverter is an electronic device that can change the direct current (DC - coming from a battery, an accumulator etc.) in alternating current (AC - the current that we use at home usually).

ZigBee module with 32-Bit ARM Processor is ideal for remote sensing. California Eastern Laboratories is the only company that offers an IEEE 802.15.4 wireless module with an internal 32-Bit ARM processor. The module named FreeStar Pro is based on Freescale Semiconductor’s MC13224V radio/processor Platform in Package (PiP) chip. It offers lots of memory and I/O ports making it simple to design complex wireless nodes.

VIDEO CODECs FOR YOUR APPLICATION.
Back in the old days when there was only analog video, there was not much concern on transmission bandwidth or storage capacity. But with the advent of digital video, it became necessary to develop video compression technologies that would fit digital signal into available media. Standard Definition video or SD-SDI requires a bandwidth of 270 Mbps while High Definition video or HD-SDI requires 1.5 Gbps.

Solar power and wind energy - DIY projects is for all those who care of Mother Earth.
These days more middle class, mainstream, citizens have the option of using alternative or renewable energy sources in their everyday lives. Solar and wind energy companies have been taking steps forward both in technology and sales.

This article shows how you may play WAV file created on your PC on an audio embedded system (comprising of a microcontroller, a DAC and a D class amplifier); it will detail the format of WAV files, show how you may extract raw data from them, how you translate it and how you should play it on. PC motherboards have both negative and positive supply voltage, therefore it is relatively easy for them to generate the dual polarity signal required to play a sound in a speaker. But how about audio embedded systems? Their overwhelming majorities (think about the number of mp3 players on the market!) have only positive power supply, so audio data has to be somehow translated to a positive interval.

This article offers open source software (oss) for FAT over MMC SDC. We have many options of open source TCP/IP stack implementations. However we don’t have enough choices for open source FAT file system over popular MMC/SDC, because of commercial reasons. Most of the popular flash cards are covered and protected by patents and copy rights. For an experienced engineer it is easy to hack the protocol, but this will bring legal problems if he releases what he found during the reverse engineering.

How to get started with FPGA DSP designs.
We live in a very business oriented society. As a result, new products are subjected to market driven specifications such as time to market and cost. Many of these products require computer systems that also have to take these specifications into account. For this reason embedded systems are far more applicable than pc type computing solutions. An embedded system is basically a fully customized computer system which is optimized for its specific function. It can usually be developed and produced at a lower cost than a traditional computer solution.

Linux is a Unix-type operating system which uses the Linux kernel. The name - Linux- comes from the Linux kernel, written in 1991 by Linus Torvalds. The system's utilities and libraries usually come from the GNU operating system, announced in 1983 by Richard Stallman. The following article presents some boards that are running on Linux.

"A printed circuit board, or PCB, is used to mechanically support and electrically connect electronic components using conductive pathways, or traces, etched from copper sheets laminated onto a non-conductive substrate. Alternative names are printed wiring board (PWB),and etched wiring board." from Wikipedia - Printed Circuit Board. In its more pure form it is simply a normally flat plastic or ceramic substrate in which alternative layers of insulators and conductors are grown sequentially to form isolated conductive paths to transfer signals and current in and out of electronic components.

I will focus on DSP (digital signal processing) on FPGA to see the advantages and disadvantages.DSP (digital signal processing) is implied in some specific applications where the necessary filter order is too high or the computation scheme is too complex for analog circuit implementation. Analog signal filtering in the discrete domain can be done with the use of a simple processing chain, containing an analog-digital converter (ADC), a computation unit that can be a DSP, an FPGA either a personal computer, and a digital-analog converter. In this article I will concentrate on a processing chain with an FPGA and describe the advantages and disadvantages of it.

KiCAD a free and open source EDA tool was designed and written by Jean-Pierre Charras, a researcher at "Laboratoire des Images et des Signaux".
The EDA tools are usually under commercial licenses and very expensive. That increases the investment of electronics engineering and brings many other issues. One of my friends used the hacked EDA tools for his projects. Unfortunately, one of the tools was infected by CIH virus and all of his projects on the hard disk were in vain on that big day. It is important to get free (or low cost) EDA tools for electronics engineering.

Amazing DIY, hacks, DIY projects and mods.
Do It Yourself takes a big deal of many people free time.
Call it Kite Building, PC Modding, Car Tuning, Playstation Hacking, many people are totally committed to their own hobby.

T-Mobile G1 phone was finally launched!
While surfing the web, in the very last days I couldn't help noting an increasing amount of news concerning this new device developed by T-Mobile featuring Android by Google. I watched several video clips, including the T-Mobile ad, read comments, post on several blogs, previews, info leaks.

How to select software or hardware floating point depending from your ARM Microcontroller.
Recently I started to collect the open source robot projects from the Internet. The SRV1 robot from Surveyor LLC seems to be very funny. The company hosts two open source projects, one is based upon 60MIPS NXP2106 ARM7 microcontroller, the other one is developed on 500Hz ADI Balckfin MPU.

The purpose of this article is how to do serial port communication using C#.
The serial port of the PC is a very important resource both in industrial environment and in home-made electronics, due to the wide popularity of the UART interface which is to be found on many microcontrollers or on many test and design instrumentation (programmable power supplies, multi-meters, oscilloscopes etc). Even if modern-day computers tend not to have a physical serial port anymore, this obstacle is overcome by the appearance on the market of USB to UART converters (like the FTDI chips for example) which can emulate serial ports. Thus, from a computer application point of view, writing to such a device is as easy as writing to a regular serial port.

HDTV (high definition television) is digitally broadcast because digital TV requires less bandwidth. HDTV or High-Definition Television is a digital television system with greater resolution than analog or standard definition (SDTV) television systems. There were early attempts to develop analog HDTV and the most successful was Japan’s MUSE which was launched in the 1990s. It requires bandwidth greater than the traditional systems and was eventually turned off in 2007.

PCB (printed circuit board) layout optimization to avoid EMI (electromagnetic interference). A PCB layout should not only strive to prevent the emission of noise but also have good noise immunity from outside sources. One should have an understanding of potential sources of noise and have a strategy for dealing with these problems.

A SSD (solid state drive) is a data storage device and uses solid state memory to store persistent data.
Intel launched its new family of solid state drives claiming a significant performance advantage over its competitors. Solid state drives are small, lightweight and durable but they come with a high price tag and are typically slow. However, researchers in Korea have found a way of making these storage devices faster. The technique involves mixing two types of memory to increase the overall speed without also jacking up the price.