What is Li-Fi? What are its Pros, Cons & applications?
What is Li-Fi Li-Fi is the transmission of wireless data by using visible light as a medium of communication. Also known as Light Fidelity, Li-Fi uses subtle fluctuations in LED light to transmit data from the transmitter to the receiver. To encode the data, the LED light is switched on and off at an imperceptible speed creating slight fluctuations that is invisible to the naked eye. These fluctuations generate binary codes that are transmitted to the receiver which decodes... read more
How does wireless charging work? Here is everything you need to know
What is wireless charging? Wireless charging is the process of charging a device wirelessly without the hassle of plugging it into a power socket in the wall, a power bank or another power source. In wireless charging, the electric charge is transferred from the charging device to the device being charged without any wired connection. Both the devices must be in direct contact or within a certain range with each other for wireless charging to work. Wireless Charging Standards... read more
Basic Terminologies in Electronic Communication
Electronic communication uses electronic circuits to transmit, process, and receive information between two or more locations. The basic components of an Electronic communication system include a transmitter, a communication medium or channel, a receiver and noise. Information is transmitted into the system in analog or digital form, it is then processed and decoded by the receiver. Outlined below are some basic terminologies In Electronic Communication System: Signal Information needs to be converted into digital form before it can be... read more
What Is Swarm Intelligence? And How It Predicted Time’s Person Of The Year Correctly
What Is Swarm Intelligence? Swarm Intelligence dictates that groups are smarter in thinking as compared to individuals. It exists when many individuals coordinate with one another in decentralized systems of control based on the principle of self-organization. We often see this manifest in nature such as flocks of birds, a swarm of bees, and school of fishes. Swarm intelligence combines the powers of many into one. Swarm intelligence is beautiful because it allows the exploration of a variety of... read more
RFID (Radio Frequency Identification) – A Brief Guide
Among the most irritating experiences in shopping, standing long queues to get the items you have purchased run through a scanner into the system is on top of the list. However, this can be cut short by the application of RFID technology in the sector. What is RFID? RFID (radio frequency identification) refers to the technology in which data is encoded in unique tags and tracked by electromagnetic fields that interrogate radio waves from the labels and feed them... read more
How Self Driving Cars Work
Annually, over one million people lose their lives to road carnages. Although the government tries to curb the situation, the number of car accident related deaths are reduced only by a small margin. Due to this, methods to handle road accidents and traffic jams have been a trending discussion for quite a long duration of time. Among the ideas presented to curb this, traffic lights and other inventions have been introduced in the transport sector. However, the idea that... read more
Virtual Reality vs Augmented Reality
Virtual Reality and augmented reality have both been buzz words since the last few months of 2017. Both hold tremendous potential for growth in almost all fields. They’re powerful tools that can help us experience reality in a manner that can dramatically shift our perception of the world. However, despite the hype, many people cannot differentiate between virtual reality and augmented reality. How are virtual reality and augmented reality different from each other? Let’s dive right into it. What... read more
Visible Light Communication-History, Working & Applications
Over the few past years, a myriad of technological advancements has been evidenced in the lighting and communication sector. The most amusing one being visible light communication (VLC). Invented in the late in the 18th century, the means has not only undergone numerous advancements but also applied in different sectors. What is Visible Light Communication aka VLC? Visible Light Communication is a communication method where visible light within a particular frequency range is used as the medium of communication.... read more
What is IOT (Internet Of Things)
In today’s digital era, more devices are built with Wi-Fi Capabilities. Also, various sensors can now be embedded in most of the devices. All this is due to the boom in the internet connection and the fact that with each day, the internet speed is improving and its cost is declining. This has lead to a not so new concept which has now become the topic of discussions among the techies, called the internet of things or IoT. So... read more8 Best Arduino Starter Kit for Beginners
Best Arduino Starter Kit For a beginner in the world of Arduino, we present some of the best Arduino starter kits which help you to get familiar with all the essential components required to build some basic circuits.The Arduino kits reviewed here are not only good for students but also for people who have very little knowledge in coding who are enthusiastic to learn more. There are hundreds of Arduino starter pack combinations available online for you to choose... read moreArduino Nano Tutorial – Pinout & Schematics
Arduino Nano Pinout The Arduino Nano, as the name suggests is a compact, complete and bread-board friendly microcontroller board. The Nano board weighs around 7 grams with dimensions of 4.5 cms to 1.8 cms (L to B). This article discusses about the technical specs most importantly the pinout and functions of each and every pin in the Arduino Nano board. How different is Arduino Nano? Arduino Nano has similar functionalities as Arduino Duemilanove but with a different package. The Nano... read more
Arduino Mega Tutorial – Pinout & Schematics
First of all, Why Arduino Mega? When cheaper boards are available, why go with Arduino Mega? The main reason behind this is the additional features that are inbuilt with this board. First feature is the large I/O system design with inbuilt 16 analog transducers and 54 digital transducers that supports with USART and other communication modes. Secondly, it has inbuilt RTC and other features like analog comparator, advanced timer, interrupt for controller wakeup mechanism to save more power and... read moreMake/Modify a Component in Proteus (2D Graphics)
Make/Modify a Component in Proteus (2D Graphics) In this article, a user-friendly feature in the Proteus software is presented, which is the Make Device. For this purpose, 2D Graphics mode of the software is used. In this article, existing components are selected and their schematic view is modified. By using the 2D graphics mode, one can design various blocks that are useful for presenting their prototypes. By using this mode, the colour, shape, size and text related to the... read moreBluetooth Based Programmable LED Message Board Circuit
Programmable LED Message Board Circuit In this article, the idea and implementation of remotely editing the text or message of the LED Matrix Display (Custom LED Signs) are presented. This article is the continuation to the article – LED Scrolling Display Board Circuit Using AVR Microcontroller which explains The Framing of Alpha-numeric characters and special characters. Showing a standstill message Scrolling the message Varying the speed of scrolling The message or text can be edited to bring custom LED signs by... read moreLED Scrolling Display Board Circuit Using AVR Microcontroller
LED Scrolling Display Board This article explains the steps involved in designing a scrolling message LED Display. The following features of the display are explained in the article. Framing Alpha-Numeric characters and special characters Multiplexing the matrices Serial mode of data distribution using shift registers Static text display Scrolling text display Mode selection between static and scrolling Increasing and decreasing the speed of scrolling in real-time This article focuses on displaying a static text on an LED board. The... read more
Project: Home Automation Using IR Remote Control
Arduino-Remote Control Home Automation In this project, we are going to show you how to control home appliances using a TV Remote. This same principle can be applicable in offices and industries as well. The project deals with the automation of four home appliances, like Tube lights, fan, bulbs, and of course TV. To automate them, four relays must be used. The circuit provided below is designed to switch the relays. But to automate and control home appliances, you... read more
Noise Cancellation Headphones – How Do They Work?
Music soothes the soul, and hence one of the most common hobbies amongst all of us is to listen to our favourite list of songs. Gone are the days of music players and walkman, now it is the generation that prefers mobile and tablets to store their playlists. Fine sound quality is what we all thrive for. A new kind of headphones has floated the market these days, known as the active noise cancellation headphones. These headphones claim to... read moreReview of Yamaha RX-V681BL A/V Receiver
Yamaha RX-V681BL A/V Receiver AV receivers are no less popular than HDTVs in home entertainment segment and with time, technology used in these devices keep getting better. Yamaha is known for making some of the most well performing and feature rich AV receivers. The Yamaha RX-V681 is one such model that offers a good blend of features and performance. This can be a worthy alternative to the models from stables of Sony and Marantz, for sure. Design: Classy &... read more
Do you know how RFID wallets work and how to make one yourself?
Shopping around for a new wallet? Then you must have encountered wallets that boast of having RFID blocking technology embedded in them. RFID technology is a fairly new concept in the market and this article will help you understand what it is and how can you make an RFID wallet yourself. First, let’s get you introduced to RFID and credit cards that use them. What is RFID? Radio frequency identification or RFID is a new technology that tracks and... read more
DIY: Musical Keyboard Using ATMEGA8 with Tune Record, Save & Playback Options
Musical Keyboard Using ATMEGA8 This article aims at developing a Monophonic (Single note) musical keyboard by generating the musical notes frequencies using a microcontroller (ATMEGA8). The project presented in this article is a 12 Key, Monophonic keyboard with the options To shift between the Higher and lower octaves Play the programmed tunes Record and save new tune in real-time Frequencies of Musical Notes Taking the Piano as a view point, every key of a Piano has... read more
Project: Auto Intensity Control Of Street Light Using Arduino
Auto Intensity Control Of Street Light Using Arduino In this project, I am going to show you how to control the intensity of LED lights according to the time and the light intensity of outer atmosphere. This is an amazing and very useful project because it prevents the wastage of electricity. This project automatically turns on the streetlight at evening and turns off in the morning. It also controls the intensity of light. Light intensity is automatically adjusted according... read moreGesture Controlled Robot Using Raspberry Pi
Gesture Controlled Robot Using Raspberry Pi Have you ever tired of controlling everything with buttons? Thought of controlling something with simple hand movements by sitting on your lazy couch? If yes, then you are at the right site. In this tutorial we are going to control a robot driven by two DC motors by simply using hand movements. There are different kind of sensors to detect your hand movement like flux sensors, Accelerometers and other gravity based sensors. So... read moreDIY: Measuring Wheel/Surveyor’s Wheel Using Arduino & Rotary Encoder
DIY: Measuring Wheel/Surveyor’s Wheel Using Arduino & Rotary Encoder A surveyor’s wheel may also be known by other names like: clickwheel, hodometer, waywiser, trundle wheel, measuring wheel or a perambulator. All these devices serve a single purpose, which is, measuring distance. The origin of surveyor’s Wheel is from an odometer. Odometer simply counts the number of rotations of the wheel. The distance travelled by the wheel is directly proportional to the radius of wheel. In the digital Surveyor’s Wheel... read more
Project: Gesture Controlled Mouse (Air Mouse) Using Arduino & Accelerometer
AIR Mouse is also called gesture-controlled mouse and it works based on hand gesture. In this project an accelerometer is used for measuring the tilt of hand in X and Y direction and moves the cursor according the tilt. In the project two types of circuit are used, one is the transmitter circuit and other is the receiver circuit. Transmitter circuit makes use of MPU6050 series of accelerometer, which is connected to Arduino through I2C communication. The data is... read more