Yearly Archives - 2012

Albert Einstein

Einstein’s Theory Stays – Neutrino Not Faster Than Light

"Neutrinos are faster than light"-  The finding by the scientists of CERN gets a final nail in the coffin. Scientists of the CERN themselves confirmed that neutrinos were not faster than light. Last year OPERA (experiment behind the first faster than light finding) found out than neutrinos were faster than light, neutrinos were making the 454-mile (730-kilometer) underground trip between the two labs more speedily than light, arriving there 60 nanoseconds earlier than a beam of light would. The results were checked...

June 12, 2012By News, 0 CommentsRead more...

Integrated sensors to handle extreme conditions

A team ofengineers has created silicon carbide based amplifiers having applications in both aerospace and energy industries. The devices can take extreme heat even upto 600 degree Celsius.These integrated circuits are designed over a wide-band-gap semiconductor. According to Dr.Garverick, "Most semi-conductors are made out of silicon, but silicon will not function above 300 degrees Celsius, and there are some important applications above that range." So his team started to use silicon carbide,which begins to act as semiconductors at high temperatures. Engineers at...

June 12, 2012By Electronics0 CommentsRead more...
Matrix Keypad

Reading Multiple Pressed Keys from Matrix Keypad using PIC Microcontroller

I have already post about Interfacing Matrix Keypad with PIC Microcontroller. I suggest to read that article before reading this. In some applications it may require to scan more than one key at a time. Reading Multiple Pressed Keys from Matrix Keypad is not simple as reading Single key. We want to change the program as well as the circuit of matrix keypad for reading multiple keys. The main problem is unexpected shorts may come to act when we press more...

June 11, 2012By MikroC, PIC Microcontroller, Tutorials, , , , 21 CommentsRead more...
Matrix Keypad

Interfacing Matrix Keypad with PIC Microcontroller

This tutorial explains 'What is a Matrix Keypad ?' and 'How to Interface Matrix Keypad with PIC Microcontroller ?'. Matrix Keypad Matrix Keypad is a very useful and userfriendly when we want to design certain applications like Calculator, Telephone etc. Matrix Keypad is made by arranging push button switches in rows and columns. Just imagine, if you want to interface a 4*4 (16 keys) matrix keypad with a microcontroller.  In the straight forward way, you will need 16 pins of a microcontroller for that, but...

June 10, 2012By MikroC, PIC Microcontroller, Tutorials17 CommentsRead more...

Custom-Made Magnets

The properties of a substance depends almost entirely on its constituent atoms and how these atoms interact with each other. But a finite number of atom types, imposes a limit on the variation of properties that a conventional material may have. But a new range of engineered materials called metamaterials have opened a whole new dimension in this field . Metamaterials are composed of sets of nanostructures which are able to interact with electromagnetic waves in almost the same way...

June 7, 2012By Electronics, , , , 0 CommentsRead more...
dc motor

Interfacing DC Motor with PIC Microcontroller using L293D

This tutorial explains " How to interface DC Motor with PIC Microcontroller ? ". DC Motor and L293D We can't drive a DC Motor (depends) directly with a Microcontroller, as DC Motors requires high current and high voltage than a Microcontroller can handle. Microcontrollers usually operates at +5 or +3.3V supply and it I/O pin can provide only up to 25mA current. Commonly used DC Motors requires 12V supply and 300mA current, moreover interfacing DC Motors directly with Microcontrollers may affect...

June 5, 2012By MikroC, PIC Microcontroller, Tutorials, , , 141 CommentsRead more...
rfid tag

RFID : Radio Frequency Identification

What is RFID or Radio Frequency Identification ? How it Works ? Radio Frequency Identification is a term that used to describe a wireless system that used for Automatic Identification and Tracking, it uses Radio Frequency electromagnetic fields to transfer data from tag attached to an object. Unlike UPC (Universal Product Code) Bar Code, this technology doesn't need line of sight communication and it can be read through clothing, human body or any non metallic materials. Therefore it is an excellent replacement for...

June 4, 2012By Electronics, 1 CommentRead more...
Digital Thermometer using PIC Microcontroller and LM35

Digital Thermometer using PIC Microcontroller and LM35 Temperature Sensor

Basics A Digital Thermometer can be easily constructed using a PIC Microcontroller and LM35 Temperature Sensor. LM35 series is a low cost and precision Integrated Circuit Temperature Sensor whose output voltage is proportional to Centigrade temperature scale. Thus LM35 has an advantage over other temperature sensors calibrated in Kelvin as the users don't require subtraction of large constant voltage to obtain the required Centigrade temperature. It doesn't requires any external calibration. It is produced by National Semiconductor and can operate over a -55 °C to 150...

June 1, 2012By Embedded, PIC Microcontroller, Projects, , , , 116 CommentsRead more...
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