Category Archives: News


Relays, Introduction, Working and Interfacing

Relays are very interesting and useful electronic component. They are a kind of switch, like those we use everyday in our home and offices to turn on and off electrical devices like bulbs, TVs, fans etc. The function of relay is to control the switching of a relatively heavier load which demands high voltages (like 240 V AC mains) or high current, from a relatively low voltage control signal (like 5v or 12v) Relays, an Introduction Working of Relays Interfacing of Relays with Microcontrollers Pinouts of common relays Relay Interface with AVR ATmega8 Relay Interface with AVR ATmega16


Transformers, an Introduction

Transformers are at the heart of power supply units for any electronic device that is to be powered from household wall power plugs. They help step down the higher voltages to lower voltages suitable for electronic circuits inside the devices. Read more …


Breadboard, an Introduction

Breadboards part of very advance method of building test circuit. They don’t use soldering and due to this some times they are called a solderless breadboard. Ability to make circuits without soldering is also useful for beginners who don’t know how to solder or yet they have not mastered the art of soldering. They are most useful for kids, because sometimes we don’t want them to be playing with a hot soldering iron. Learn more about breadboard


General purpose PCBs, an Introduction

General purpose PCBs, as their name suggests is the generalised from of PCB. By generalised we mean that we are free to make any kind of circuit as we wish using this PCB. This makes it useful for small scale production of electronic devices and also for testing out new ideas before production. Read more


PCBs (Printed Circuit Boards), an Introduction

An electronic device is made by using several components like ICs, transistors, diodes, capacitors, resistors, displays, indicators, switches, buttons, connectors etc. All these are connected to other components according to a schematic. A printed circuit board helps hold all components of a device in one place as a single unit and at the same time provide required electrical connection between pins of components. Read more …

Techniche offers delight for students from North-east

The first day at Techniche, the annual techno management festival of IIT Guwahati has filled the audience and participants from various colleges in Northeast and nationwide with lots of fun and rich experience in technology and management related events. The day started with various events like Workshops, Lecture series, exhibitions and finished with nites and drum circle show. In the morning, there were the nationwide prelims of Escalade, a pole climbing robotics competition where students from 12 cities all over the nation participated to test their robotics temperament. From Guwahati and adjacent areas, there were 50 teams out of which 6 teams were selected for the final round. This was followed by exhibitions by The Northeast frontier railway. In parallel, the first rounds of Junkyard wars & Techscribe and the prelims of Bermuda Triangle under Predef module occurred. The events are team based and require proper planning and coordination between the team mates. The Best Manager and Case study competitions were offered by Corporate Module on Day1. The participants, fully clad in Business attire, were trying to impress the judges and outsmart their peers. The Day1 lecture series line-up included Bikas Sinha the Homi Babha Chair Professor, Kota Harinarayan the father of India’s Tejas programme and Peter Atkins, the author of well-known series of Chemistry books. There were greeted by […]

Techniche festival kick-starts in IIT Guwahati

The sixteenth edition of the annual techno-management festival of IIT Guwahati-Techniche is back with a bang and a greater zeal and enthusiasm. Enthusiasts poured in from different areas of the country to witness this grandeur and a celebration of technology. Students came from over 180 different colleges all over India. The event started with an opening ceremony in the institute auditorium which was decorated by all the dignitaries of IIT Guwahati. Speaking of the importance of such activities in students’ life, the Director said  “Such events foster overall development of the students. Apart from their regular workload, it is great to spend some time to enrich their technical and competitive skills on a national platform. This would be a huge benefit for the students of North-east”. There are many challenging events lined up for the rest of four days and he urged all the college students to pour into IIT Guwahati campus to witness and be a part of this technical extravaganza. Following this was the rock-on concert by the VH1 group which bought in the much needed enthusiasm to keep up for the rest of the days. Liquid drumming was the other event where performers showed their expertise in the fields of drumming and rock bands. Sand painting was the best amongst the events where the audience were nothing […]

Techniche encourages innovation through Robotics

Come September and it’s time for us to witness a technical overdose in the form of TECHNICHE the annual techno management fest of IIT GUWAHATI. Started fifteen years ago in 1999,techniche was conceptualized with an aim to motivate the youth of our nation to think out of the box, expand their horizons and reach the zenith of success in all techno-management spheres. It has stayed true to its vision since; and from its humble beginnings. Techniche now revels in being one of the premier techno-management festivals of the nation. From 4th of September to 7th the fest takes you to the best of technical and cultural marvels as well as honing the new aspiring minds that are to become the future of the nation. With major attractions like Lecture series, Industrial conclave, Technothlon the international school championship, Predefined competitions , Robotics, Online events being introduced for the first time, this Techniche promises to be the best in 16 years. The most participated and attractive module of this event is Robotics, the breath and soul of modern day technology. With up to 3,50,000 INR at stake as prize money, the competition is all set to rock the minds of all tech enthusiasts over the nation and will give an opportunity to showcase their talents and absorb knowledge through one of the […]

Techniche-IIT Guwahati organises competitions

Stepping into the 16th edition of its annual techno management festival, IIT Guwahati is all ready to deliver its perennial technological overdose in the form of Techniche, to be conducted from 3rd to 7th September at IIT Guwahati campus. As always, this four days of fun, frolic and enlighten gives opportunity to students nationwide to display their skills and compete with some of the best competitive minds around. Filled with huge variety of events spanning the domain of technology, management and amusement, this festival is sure to leave every audience who attend IIT Guwahati spellbound. Started fifteen years ago in 1999, Techniche was conceptualised with an aim to motivate the youth of our nation to think out of the box, expand their horizons and reach the zenith of success in all techno-management spheres. It has stayed true to its vision since and never ceased to amaze. Techniche now revels in being one of the premier techno-management festivals of the nation. The competitions include Technothlon – the international school championship, Escalade-the annual robotics competition, Corporate module an innovative management face-off and others. The one module that catches the eye of every participant every year is the PreDefined Module. Coming from its huge success at last years’ Techniche, the PreDefined module this time around gives you the much needed fun element amongst […]


Introduction to Diodes

In this part of our practical electronics tutorial we will learn about diodes. Like resistors and capacitors they are also very common. They are simple component with two terminals. But unlike resistors they are polarized. That means two of its lead are not equivalent and cannot be swapped. Before moving any forward let us see how they look. Fig. Few Common Diodes Read more about diodes


Capacitors, an Introduction

Capacitors are two terminal electronic component used to store energy in form of electrostatic field. They are one of the most commonly used components. Among the many uses, some are :- Providing a bypass path for noise Smoothing voltage of power supply Blocking DC current (allowing only AC current to flow) Read more about capacitors.  


element14 MEMS Sensors Evaluation Kit Review

Recently I got the opportunity to work with an evaluation kit from element14. They bring development and evaluation kit for latest microcontroller, sensor and other electronic solutions introduced by several top notch companies. And user like me get the chance to get introduced with latest in technologies. And what is real worth telling is that these kits are really low cost ! For example Freescale recently introduced several MEMs sensors to measure parameters such as Altitude. Atmospheric pressure. Magnetic field (to find orientation, like a compass) Accelerometers. All these are recently launched and thus were ultra modern with very small size and consumed minimal amount power. The xtrinsic sensor board from free scale has all these sensors on one small PCB. Fig. xtrinsic sensor board Xtrinsic MPL3115A2 Pressure Sensor – For sensing atmospheric pressure and altitude data. Altitude data can me measured with an accuracy of 30cm. Output can be selected in meters or Pascal. It is available in a small 3 x 5 x 1.1 mm LGA package. Interface is standard digital I2C, thus can be used with any type of microcontrollers. You can download the datasheet of the MPL3115 from the link. More information about MPL3115. MMA8491, 3-Axis Digital Accelerometer – Tilt and acceleration sensor. Digital interface (I2C). Range of measurement 8g. Output data 14bits. Sensitivity of 1mg. […]