Simple LED Projects Using AVR Microcontroller

john October 11, 2017 1 Comment
This article is another step forward in learning more about AVR microcontrollers. We have demonstrated 3 simple LED based projects using ATmega328 microcontroller, which will help you to learn its basic concepts. ATmega328 is an eight bit AVR (Advanced Virtual RISC) based microcontroller. It is a powerful microcontroller with a built-in  internal memory of around 32Kb. Most Arduino boards consist of an Atmel 8-bit AVR microcontroller with varying amounts of flash memory, pins, and features. Arduino Uno is a...
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Photoresistor – Symbol, Working, Types & Applications

john October 29, 2017 5 Comments
Photoresistor – A Detailed Guide While walking through the streets in the evening, have you ever noticed how the street lights turn on automatically as it starts getting darker?  This automatic switching ON of the street lights are due to the presence of a special type of variable resistor on its circuit. The resistance of this variable resistor depends on the amount of light that falls on it. Such a resistor is called the photo-resistor, and in this article...
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Thermistor – Working, Symbol, Types & Applications

john October 11, 2017 1 Comment
If you are looking for a temperature sensor that is cost effective and accurate, your first choice may be a thermistor. It is a type of resistor whose resistance changes with change in temperature.  This article deals with the working, types and applications of a thermistor. Lets start! What is a Thermistor? Coined from the words “THERmally controlled resISTOR”, thermistor is a temperature controlled resistor. The resistance offered by this solid state temperature controlled device depends on the ambient...
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Advantages of Turnkey PCB Assembly Services for Start-Ups

jojo October 29, 2017 No Comments
Hardware development has become increasingly accessible to hobbyists and new companies alike. CAD software is open source or low cost, parts can be ordered online and now fully assembled PCBs can be ordered with ease. PCB manufacturers offer turnkey PCB assembly services which are beneficial to all hardware makers, but especially start-ups. Any company can have high quality circuit boards produced at low volumes at an affordable price thanks to advancements in the circuit board manufacturing equipment. Let’s say...
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Arduino Gear Motor Interface Using IC L293D

john October 29, 2017 No Comments
Arduino Gear Motor Interface Using IC L293D In this article, we are publishing a project which explains different aspects of Arduino-Gear motor interface. Gear motor is a specially designed DC motor whose gear assembly helps in increasing the torque and reducing the speed. Compared to a normal DC motor, maximum rpm a gear motor can produce is less. But they have the advantage that by using the correct combination of gears, its rpm can be reduced to any desirable...
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Simple Robotic Arm Project Using Arduino

john February 17, 2018 No Comments
Robotic Arm Project Using Arduino Nowadays, manual labor is being reduced at big scale industries and factories to increase efficiency and gain profit by installing robots that can do repetitive works. A onetime installation of such a device may cost a huge amount, but in the long run, will turn out to be more profitable that manual labor. Out of the lot, a simple robotic arm is one of the most commonly installed machines. We are introducing the basic...
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DIY – GSM Relay Control Using Smart Switch Board

john October 29, 2017 1 Comment
The main objective of this project is to control the ON/OFF status of electrical appliances at home or company remotely using a cell phone and relay switch. The appliances may include lights, fans, pump, and air conditioners and so on. Though all the household items can be automated to change their ON/OFF status, our prototype model GSM remote control circuit uses 8 electrical appliances. The project includes multiple users to control the appliances and uses unique SMS formats for...
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Interfacing Stepper Motor to Arduino

john January 11, 2018 No Comments
Arduino Stepper Motor Interfacing Using Darlington IC ULN2003A In this article, we are publishing a project which explains different aspects of interfacing a Stepper Motor with Arduino. Stepper motor is a specially designed DC motor which comes with advantages of both a servo motor and a normal dc motor. Compared to a normal Dc motor, the maximum rpm a stepper motor can produce is very low. But they have the advantage that they can be positioned accurately. Unlike servo...
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Marantz SR-7011 Receiver – 9.2 Channel Full 4K Ultra HD – Review

john September 28, 2017 No Comments
Marantz SR-7011 Receiver – Review Marantz is one company that is known for making premium quality home audio and video appliances. The SR7011 is the new flagship AV receiver which carries forward the legacy of the brand’s SR 7010 model. The enhancements are notable and it gets top notch audio and video features too. You get support for immersive audio formats, along with provision for latest HD video and web streaming technologies. It also blows away the competition with its...
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PCBFox – A FREE marketplace connecting PCB manufacturers with buyers

Charles John September 21, 2017 No Comments
We are very excited to announce that @ CircuitsToday, we just launched our new venture PCBFox.com. PCBFox is a great platform that connects PCB manufacturers and buyers from all over the world. The idea behind PCBFox is to setup a place for buyers to meet the best PCB manufacturers anywhere around the globe. With the high growth of IoT (Internet of Things), the number of hardware-based startups & professionals is growing each day, and a lot of them are...
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Automatic Railway Gate Control Using Arduino & IR Sensor

john February 17, 2018 3 Comments
Automatic Railway Gate Control System Using Arduino & IR Sensor About a million people have died over the past 5 years in unmanned railway crossings all over the world. At least 1/3rd of the railway crossings are unmanned due to their remote placement and less traffic. The Automatic Railway Gate Control System using IR Sensor & Arduino focuses on systematic traffic control of railway gates that are both manned and unmanned. This project will not only make the system more...
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Variable Resistor – Working, Construction, Types & Applications

john September 22, 2017 No Comments
Variable Resistor – Working, Construction, Types & Applications One of the critical pieces in an electric circuit, the resistor is the most omnipresent electronic component. Available in wide varieties, these resistors can be used in various applications.  Resistors are broadly classified as fixed and variable resistors, according to the type of resistance value they offer. Here, in this article we shall discuss about variable resistors, its definition, types and uses. Let’s start! What is a Variable Resistor? A variable...
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Potentiometer – Working, Circuit Diagram, Construction & Types

john September 22, 2017 No Comments
Potentiometer – Working, Circuit Diagram, Construction & Types Resistor, a small bundle of resistance, is one of the most used basic components in an electric circuit. Mostly used to regulate the current flow by adding/subtracting resistance from the circuit, these resistors are available in many shapes and sizes. These resistors can be broadly classified as fixed and variable resistors. As their respective names suggest, a fixed resistor has a single fixed value of resistance, whereas a variable resistor has...
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Varistor – Symbol, Working, Types & Applications

john September 22, 2017 3 Comments
Varistor – Symbol, Working, Types and Applications The small package of resistance, the resistor is used in so many circuits, in so many forms, that it is almost an omnipresent electric component. From the very basic fixed resistors, where the resistance remains unchanged, to different types of variable resistors, whose resistances change according to different factors. The variable resistors are of different types; there are ones in which the effective length of the resistive strip plays role in changing...
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Ballast Resistor – Working, Types, Applications & Uses

john September 22, 2017 1 Comment
Ballast Resistor – Working, Types, Applications & Uses According to the English dictionary, “ballast” means something that gives stability. Thus when referring to an electrical ballast, we mean an electrical device that plays an important role in maintaining the stability of the electrical circuit. However, the question you may have is how does it provide the stability? Some electric ballasts limit current while some limit voltage, depending upon the circuit in which they are used. By doing so, they...
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Digital Potentiometer – Working, Internal Structure & Applications

john September 22, 2017 1 Comment
Digital Potentiomter – Working, Internal Structure & Applications One of the most common types of variable resistors is the potentiometer. Potentiometer or “pots”, are three terminal devices, used to vary the resistance in a circuit. We have dealt in depth about this topic, in our article “potentiometers”, if you want to learn about the basics of a pot, this article will be useful for you. Pots that ware available nowadays varies in operation. Some are mechanically operated, while some...
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Rheostat – Working, Construction, Types & Uses

john September 22, 2017 1 Comment
Rheostat – Working One of the most omnipresent electric components is the resistor. In applications where variable resistance is required, potentiometers and rheostat are mostly preferred. We have already discussed about potentiometers in our previous article about the same. Here we shall discuss about rheostat in detail. What is a Rheostat? Rheostat is a type of variable resistor, whose resistance can be changed so as to change the amount of current flowing through a circuit. This device, was named...
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Ultrasonic Blind Walking Stick Using Arduino

john February 17, 2018 No Comments
Ultrasonic Blind Walking Stick According to the WHO, about 30 million people are estimated to be permanently blind worldwide. These people are totally dependent on others. They even cannot walk on their own. We have created designed and built an “Ultrasonic Blind Walking Stick” device which will help blind people to walk with ease independently. As a simpler version, we have used only one ultrasonic sensor in this project. For better accuracy and assistance two or three sensors can...
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Rain Sensing Wiper using Arduino and Servo Motor

jojo October 30, 2017 No Comments
Automatic Rain Sensing Wiper Using Arduino  This project is designed to build a car wiper that automatically detects the rainfall intensity and regulates the frequency of wiper operation. It is built, using Arduino UNO board. A rain sensing module is used for measuring the intensity of rainfall. And a servo motor is used for controlling the wiper movements. An LCD module is also attached to the controller for displaying the rainfall intensity. By measuring the amount of rainfall ,...
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Marantz SR-6011 AV Audio & Video Component Receiver, Black

john September 23, 2017 No Comments
Marantz SR-6011 Receiver Marantz is one brand that is known for making some of the most feature rich and premium class AV receivers and they are eyed by people seeking entertainment minus compromise. If you are looking for a top notch performer in this segment, the SR6011 from Marantz is worth a consideration. This versatile AV receiver sits somewhere between the siblings SR5011 and SR7011. It is quite future proof- in terms of features and performance wise trounces most...
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Circuit Diagram - Interfacing GSM Module Using Proteus

Interfacing GSM Module Using Proteus

john September 10, 2017 No Comments
Interfacing GSM Module Using Proteus The Proteus simulation software can be used to interface real-time modules like the GSM Module. By using this simulation feature the designer can develop the systems within the software and test all the features of the system that is under design without using any hardware components. The system can be standardized by comparing the performance of various components, like, for example a suitable microcontroller. This article explains how to connect a GSM Module to...
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Circuit Diagram - Password Based Keypad Door Lock

Keypad Door Lock using AVR Microcontroller – Atmega16

john September 10, 2017 No Comments
Password Based Keypad Door Lock  In this article, a digitally secured lock based on password verification is explained. The system uses a seven segment display array to show the password, a matrix keypad to enter the numbers/password and operates a relay (to activate the solenoid valve) for locking and unlocking purpose. The system alarms through a buzzer if a wrong password is entered for 3 times continuously and an SMS is sent to a predefined contact number. The password...
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Circuit Diagram - UART between Microcontrollers Using Proteus

UART Between Microcontrollers Using Proteus

john September 8, 2017 No Comments
UART Between Microcontrollers Using Proteus UART stands for Universal Asynchronous Reception and Transmission of data serially between two terminals. This mode of communication has the advantage of data transmission using lesser number of I/O Pins. For longer transmission distances this is essential as it involves less number of transmission wires. In this article, we shall see how two microcontrollers communicate with each other using their UART peripheral. UART Bridge Between Two Microcontrollers We shall discuss this through a simulation...
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Arduino Solar Tracker Using LDR Sensor & Servo Motor

john February 17, 2018 3 Comments
Arduino Solar Tracker Solar energy is one of the fastest growing industries in the world; today more than 65 GW energy is produced by solar power. Since solar energy is renewable, it is a good power source, especially for developing countries. In this project, I am going to show you how to make a solar tracker using Arduino Nano. The solar panel tracker is designed to follow the sun movement so that maximum light intensity hits on the solar...
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Onkyo TX-8160 Receiver– Review

john September 6, 2017 No Comments
Onkyo TX-8160 Review People buy various types of gadgets for availing entertainment nowadays and AV receivers are among the most widely poached appliances worldwide. Onkyo is among the popular AV receiver manufacturing companies and the brand has several popular models in its portfolio. Onkyo AV receivers are liked for their long feature lists and all round performance. The company also updates its product range periodically to cater to the needs of different types of users. One capable contender from...
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