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 Ligo GeorgeElectronicsRadio Frequency, RFID1 CommentRead more...

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 Ligo GeorgeEmbedded, PIC Microcontroller, ProjectsLM35, Microcontroller, PIC, Projects, Thermometer116 CommentsRead more...

Digital Clock using PIC Microcontroller and DS1307 RTC

A Digital Clock can be made easily by using PIC Microcontroller, DS1307 and a 16x2 LCD. I have already posted about Interfacing DS1307 RTC with PIC Microcontroller. The DS1307 RTC can work either in 24-hour mode or 12-hour mode with AM/PM indicator. It automatically adjusts for months fewer than 31 days including leap year compensation up to year 2100. DS1307 comes with built-in power sensing circuit which senses power failures and...

May 31, 2012By Ligo GeorgeEmbedded, PIC Microcontroller, ProjectsClock, Digital, DS1307, Embedded, Microcontroller, PIC, RTC325 CommentsRead more...

The First Chemical Circuit Developed

Ion Transistors for the transport of both positive and negative ions, as well as biomolecules had been previously developed by a group of Organic Electronics research team at Linköping University. Now Tybrandt has now succeed in developing circuits using these Transistors similar to traditional silicon electronics. In essence of this technology we can build computer chips that can directly interface with our body cells. The major advantage of chemical circuit is that the charge carrier consists of chemical substances with various functions and this gives us new opportunities to...

May 30, 2012By Ligo GeorgeElectronics, Electronics NewsChemical, Human, Transistor0 CommentsRead more...

Nano Vacuum Tubes : The Future of Computing

Vacuum Tubes Reloads.... Vacuum Tubes are used in computing, switching, amplification and rectification right up to 60s. Then it died a quick death since most applications solid state device such as semiconductor devices have replaced them. We all know that Semiconductor devices are small in size and cheaper than vacuum tube devices. Silicon transistors are cheaper but they are slower and susceptible to radiation. The performance of Silicon Transistors, far away from Vacuum Tube devices due to their compact size, no heating time, reduced...

May 29, 2012By Ligo GeorgeElectronics, Electronics NewsNano, NASA, Silicon, transistors, Vacuum Tubes0 CommentsRead more...

Implementing XOR and XNOR Logic Functions using Diode Bridge and Transistor

Using DTL (Diode Transistor Logic) we can implement XOR and XNOR Logic Functions with a minimum number of Discrete Components. When we need to design Logic Circuits operating for higher than standard supply voltages, such as 30 and 24V, we can implement it by using regulators with standard logic family and interfacing it through Level Shifters. Alternatively we can implement Logic Gates from discrete electronic components and can be operated directly from the supply voltages if the Logic Circuits are not complex. We know that...

May 28, 2012By Ligo GeorgeElectronicsDigital Electronics, electronics, Gates, XNOR, XOR5 CommentsRead more...

Interfacing Real Time Clock (RTC) DS1307 with PIC Microcontroller

DS1307 is a low power serial real time clock with full binary coded decimal (BCD) clock/calendar plus 56 bytes of NV SRAM (Non Volatile Static Random Access Memory). Data and Address are transferred serially through a bidirectional I2C bus. The RTC provides year, month, date, hour, minute and second information. The end date of months is automatically adjusted for months fewer than 31 days including leap year compensation up to year 2100. It can operate either in 24-hour format or 12-hour format...

May 24, 2012By Ligo GeorgeMikroC, PIC Microcontroller, TutorialsDS1307, Real Time Clock, RTC56 CommentsRead more...

Multiplexing of Seven Segment Displays with PIC Microcontroller

When a Seven Segment Display is interface with PIC Microcontroller it needs minimum 7 pins to display a value. But real time applications like Digital Clock, Calculator, Digital Watch requires 3-6 seven segment displays. Lets assume that we need 6 digit display, ie we need 7 segment * 6 Display = 42 pins. Thus we actually need Microcontroller with 42 output pins. This is waste and not economical to use lot of pins of a Microcontroller just for display. The simplest...

May 23, 2012By Ligo GeorgeMikroC, PIC Microcontroller, TutorialsDisplay, Microcontroller, MikroC, PIC, Proteus, Seven Segment24 CommentsRead more...

Author - Ligo George

Basics