DC Motor Speed Control Using Arduino & PWM

john February 17, 2018 1 Comment
DC Motor Speed Control Using Arduino & PWM Speed control of DC motor with PC Interface is an easy DIY project. In this project DC motor’s speed is controlled by sending the command through PC. Arduino is directly connected to PC through the USB cable and command is given to Arduino on serial monitor of the Arduino IDE. Motor is connected to a transistor, and the base of transistor is connected to PWM pin of Arduino and motors speed...
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Magneto Resistor – Symbol, Working, Types & Characteristics

john November 9, 2017 3 Comments
Back in 1856, William Thomson a Scots-Irish mathematical physicist and engineer while experimenting with iron pieces discovered a phenomenon called magneto-resistance. This effect was later on used to build a special type of variable resistor known as magneto-resistor. In this article you shall get a brief about a magneto – resistor: its working principle, characteristics and applications. So let’s delve in! What is a Magneto Resistor? It was found by Sir William Thomson that, when the iron pieces were...
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Raspberry Pi Music Player – A DIY Project

john November 9, 2017 No Comments
Raspberry Pi Music Player We all know that Raspberry Pi is a multipurpose System on-chip computer which is capable of doing all the functionalities of a general purpose computer with a low bandwidth. Everyone wants to have a customised audio player at home. Raspberry Pi is capable of providing a standard quality audio through its 3.5 mm audio jack. If you want to have a high quality audio output from Raspberry Pi, there are USB plug and play add-on...
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Carbon Film Resistor – Working, Construction & Applications

john October 29, 2017 No Comments
Carbon Film Resistor One of the most used “passive devices” in an electric or electronic circuit is undoubtedly the resistor. Since it has wide range of applications they are found in different varieties. According to the type of resistance they offer, these devices are often classified as fixed or variable resistors. However, the resistors, either fixed or variable are not same in construction and hence are termed according to their type of construction. One of these resistor type is...
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Water Level Indicator Using Arduino & Ultrasonic Sensor

john February 17, 2018 5 Comments
Water Level Indicator Using Arduino Wireless Water Level Indicator Using Ultrasonic sensor & Arduino is an amazing and very useful project. The objective of this project is to notify the user the amount of water that is present in the overhead water tank. This project can be further enhanced to control the water level in the tank by turning it ON, when the water level is LOW, and turning it OFF when the water level is HIGH. Thus, the...
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Raspberry Pi as a Web Server

john October 29, 2017 No Comments
Raspberry Pi as Web Server Generally Web server is a computer where the web content is stored which is used to host websites. Website is collection of web pages while web server is a software that respond to the request for web resources. There exists other web servers also such as gaming, storage, FTP, email etc. All computers that host Web sites must have Web server programs, that uses HTTP (Hypertext Transfer Protocol) to serve the files that form...
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Interfacing LCD Module with AVR in 4-Bit Mode

john October 11, 2017 1 Comment
This article is another step forward in learning more about AVR microcontrollers. We have demonstrated interfacing of LCD module with 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. Atmega 328 has only 28 pins. Therefore it have only limited number of  GPIO pins. While  designing complex projects we need sufficient number of...
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GPS-GSM Based Vehicle Tracking System Using Microcontroller

john October 29, 2017 1 Comment
GPS Vehicle Tracking System This article mainly focuses on the idea and logic behind GPS Vehicle Tracking System with remote monitoring and security access using mobile phone. The GPS-GSM module is interfaced using a single microcontroller and the real-time GPS location of the system is inquired using SMS feature. The system is designed to operate only by the registered users. There is an option to add or remove the users in real-time. How does Car Tracking System Work? The...
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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 5 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 1 Comment
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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