Best Digital Oscilloscopes

john June 20, 2017 No Comments
A digital oscilloscope finds its vast use among engineering students and circuit enthusiasts. It is known to be one of the best and most able device to capture, analyze and study the salient features of electrical signals. Digital oscilloscopes also finds its use in motor vehicle testing, telecom engineering, vehicle ignition systems, and also medical instruments like ECG’s. A digital oscilloscope is basically an analog oscilloscope that uses an analog to digital converter (ADC) to transform the measured voltage...
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Top 6 Portable Handheld LCR Meters-Review

jojo January 26, 2017 1 Comment
What is LCR Meter – an overview! LCR Meters are used to measure parameters of basic passive electronics components viz Resistor, Capacitor, and Inductor. LCR meters are available as desktop meters and handheld meters. Handheld meters are basically used for portability, use in the field and also by hobbyists to have a low-cost alternative with limited accuracy. The basic functions provided by an LCR meter are – Measurement Mode, Frequency of Measurement, Type of component (Inductor, Capacitor or Resistor)....
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Moisture sensing automatic plant watering system using 8051.

praveen December 19, 2016 3 Comments
DIY Automatic plant watering system This project is about a moisture-sensing automatic plant watering system using 8051 microcontroller. The system simply senses the moisture level and switches on the irrigation pump when the moisture is below the set limit. The system switches off the pump when the moisture rises above the set point. The moisture level threshold can be set using a trim pot on the system. The status of the pump (whether ON or OFF) is displayed on...
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Drag and Drop IoT Project Builder myDevices partner with Arduino

jojo August 11, 2016 No Comments
myDevices – the company behind Cayenne – a drag and drop IoT project builder has announced its partnership with Arduino on August 9th 2016. With the partnership in place, Arduino’s large collection of open source boards are now accessible via the Cayenne visual editor. The importance of a visual IoT project builder is in acceleration of development process. Developers can eliminate lots of manual steps (which usually consumes a good share of development time) with the help of Cayenne,...
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Best Analog Oscilloscope/CRO Online Buying Guide

john August 13, 2017 No Comments
Oscilloscope An oscilloscope is a device that is used to measure time based varying signals and also to calibrate equipments to bring their standard value. Certain faults in electronic circuits can be identified and corrected with the help of oscilloscopes. Nowadays, many types of oscilloscopes are available in the market today. Since each type has different pros as well as cons, buying the right one depends on the type of circuit to be tested, or the equipment to be...
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GSM and GPRS Modem/Module – Price and Buying Guide

jojo August 9, 2016 5 Comments
A GSM/GPRS Module is always needed to implement projects that involve SMS based or Web based controlling of devices. We have published lots of tutorials and projects using GSM and GPRS modules in CircuitsToday. This article is developed as a buyers guide for anyone interested in buying a GSM/GPRS module. There are a handful of options available, when it comes to purchasing a GSM/GPRS modem. You might have read about SIM900 Modules, SIM300, SIM800 and models from other brand...
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How is ARM Programming Different?

john July 18, 2016 1 Comment
Programming ARM MCUs – What is Different? There are very, very few engineers or electronics enthusiasts who started programming with ARM microcontrollers right away. Most come to ARM looking for higher processing capabilities, with a background in simple 8-bit MCUs. In the previous article on How to Setup and Install the Development Environment for ARM , it was shown how to set up the Keil ARM tools to be able to compile programs and generate output files. However, before...
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Proteus Tutorial – Using Dot Matrix Displays

Narasimha March 8, 2017 No Comments
Arrangement of LED’s Consider an 8X8 matrix display, which means it contains 8 LED’s in each row and 8 such rows are used to form the matrix. Thus, it contains 64 LED’s (8*8).It is hardly practical to operate these 64 LED’s individually using any kind of digital circuits or microcontroller circuits. Hence, multiplexing is done to interface these LED’s with minimum number of pins. Typically, an 8X8 matrix display can be interfaced with 16 pins. Similar to a seven...
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How to Make an LED Scrollbar Using Arduino Nano

jojo February 17, 2018 2 Comments
In this tutorial, we are going to build an LED Scroll Bar as shown in the image given below. The project is designed to flash Ten LED strips ( by giving different lighting patterns for each strip) with the help of a control board. We have created a simple GIF animation of the project to give you a good idea of what we are going to build. So here take a look at the animation of working model of...
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Heart rate monitor with sms alert.

praveen August 10, 2016 1 Comment
Heart rate monitor with SMS alert (Using 8051 and GSM module). This project is about a heart rate monitor that senses the heart rate from the finger tip an sends it as a message to a cell pone number. This project is based on an 8051 microcontroller and a GSM module. Heart rate is sensed from the finger tip using a photo transistor / IR LED pair. This method is called photoplethysmography. Photoplethysmography is the volumetric assesment of  an organ...
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Proteus Tutorial – Using Single and Multiple Digit Segment Displays

Narasimha March 8, 2017 No Comments
Segment Displays Inside Segment Displays Segment Displays contain LEDs arranged in a specific fashion such that, various characters or shapes can be displayed, by turning ON selective segments in different combinations. Shape of the LED is rectangular (to appear as a segment).Generally, these are used to display numbers. As of now, alpha-numeric characters can also be displayed using 16-Segment display. Basically, there are two types of displays based on common node of LEDs inside the display. The configurations shown below...
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Proteus Tutorial – Light Emitting Diode (LED) and Bar Graph Display

Narasimha March 8, 2017 No Comments
How to work with Light Emitting Diode (LED) in Proteus In this post we will be learning on how to use the “Light Emitting Diode (LED)” component in Proteus simulation software. In case you have not got on through the basics of Proteus, here is the link – Proteus PCB Design and Simulation Software – Introduction. Note:- You may also read our 1st chapter on Proteus Tutorial Series – Switches and Relays in Proteus before you continue reading this chapter. Types of LEDs...
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How to Install and Setup Compiler with Development Environment for ARM7

Pratik Panda June 15, 2016 No Comments
If you have read the previous article – Why switch to ARM ? Introduction to ARM Micro Controllers – you must have had a basic idea on what makes ARM7 superior to other more commonly found 8-bit architectures. You must also have noticed the complexity of the ARM architecture. The flexible and modular design makes ARM affordable and fast – but at the same time very complex to understand for beginners. It may take weeks to just get the...
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Electronic Component Kit for Starters and Beginners from ProTechTrader

jojo June 14, 2016 No Comments
Are you a beginner in Electronics wondering where to start? Well, we’ve all been there once like you, swimming on the shores not knowing where to go and wondering, “What’s the difference between resistance and capacitance?” or “Who is Georg Simon Ohm and why does he have a law?”   In this article, we are reviewing an awesome electronic component kit from ProTechTrader, which caters to all beginners and enthusiast looking to get started in the exciting arena that learning...
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Why switch to ARM ? Introduction to ARM Micro Controllers

Pratik Panda June 15, 2016 1 Comment
It is true that beginners should start off with 8051 or AVR to get a clear understanding of how microcontrollers work. The documentation of these devices is very readable and simple to understand. But if you have worked with these architectures for some time, you have probably felt your creativity being throttled by the resource constraints that these devices impose on you. 512 bytes of RAM?! What can you possibly do with 512 bytes? Some people might argue that...
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Interfacing 8×8 LED Matrix with Arduino

john June 15, 2016 6 Comments
LED matrix displays can be used to display almost anything. Most modern LED sign boards uses various types of matrix boards with controllers. In this tutorial we are going to interface a single color 8×8 LED matrix with Arduino and display a few characters in it. 8×8 matrix consists of 64 dots or pixels. There is a LED for each pixel and these LEDs are connected to total of 16 pins. You can identify the pin out and circuit...
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Proteus Tutorial – Switches and Relays

Narasimha March 8, 2017 1 Comment
 In this tutorial, we will be learning on how to use the “Switch” component in Proteus simulation software. In case you have not got on through the basics of Proteus, here is the link – Proteus PCB Design and Simulation Software – Introduction.  1.1 Basic Operation of a switch A switch is component that is used to either make or break a circuit path. There are different types of Switches which can be operated (i)  Manually by mechanical input (ii) Electrically...
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Top 5+ Wireless Motion Sensor and Burglar Alarm products review

john April 21, 2016 No Comments
Wireless motion sensor alarms are commonly used in homes or office premises as a security protection device. As the name suggests, an alarm is set to turn on, when the device detects the presence of someone (human or animal) in the range of the device, when they shouldn’t be. The movement or motion of the intruder is detected by the sensor and the signal is transferred to the alarm section for warning the concerned person about the threat. Why...
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Proteus PCB Design and Simulation Software – Introduction

Narasimha March 8, 2017 8 Comments
Proteus is a simulation and design software tool developed by Labcenter Electronics for Electrical and Electronic circuit design. It also possess 2D CAD drawing feature. It deserves to bear the tagline “From concept to completion”. About Proteus It is a software suite containing schematic, simulation as well as PCB designing. ISIS is the software used to draw schematics and simulate the circuits in real time.The simulation allows human access during run time,thus providing real time simulation. ARES  is used...
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Digital Door Lock – Password based Electronic Code Lock using 8051

jojo March 18, 2016 5 Comments
This Digital Door Lock – is simply a password based electronic code lock designed using 8051 micro controller, a keypad and a 12 volt dc relay. In this article, we have designed a simple digital door lock using 8051 -which can be used as a security checking system to limit access to an area/room only for certain individuals with the password. So our digital door lock project can be called with a very wide range of names like a...
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Interfacing stepper motor to 8051

praveen March 11, 2016 1 Comment
Interfacing stepper motor to 8051 microcontroller. This article  is about interfacing stepper motor to 8051 microcontroller. Many guys were asking here to show how to interface stepper motor to 8051 microcontroller. I think this is the time. Stepper motors are widely used in industrial, medical, consumer electronics application. In simple words, anywhere precision rotation or positioning of an object is needed. Stepper motor. Stepper motor is a brush less motor which converts electrical pulses into mechanical rotation. As the name...
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burglar alarm with sms alert - circuit diagram

PIR sensor based burglar alarm using 8051 with SMS alert.

praveen August 10, 2016 1 Comment
PIR sensor based burglar alarm with SMS alert. This project is about a PIR sensor based burglar alarm with SMS alert. The circuit senses the intrusion using a PIR sensor and sends an SMS to to the given mobile number when an intrusion occurs. The number of intrusions taken place is also displayed on an LCD display. An 8051 microcontroller is used for monitoring the PIR sensor and sending the alert message using the GSM module. An alarm is also...
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Segments of Seven Segment Display

Arduino and 7 Segment Display – Interfacing Tutorial

jojo March 3, 2016 3 Comments
In this article, we are publishing a tutorial on how to interface seven segment LED display to Arduino. Seven segment displays are used in many embedded system and industrial applications where the range of outputs to be shown is known beforehand. Basic 1 digit seven segment display can show numbers from 0-9 and a few characters. 7 segment displays are of different types; especially they differ in the number of digits/character it can display. Basically a 7 segment display is...
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LM35 and Arduino – Temperature Measurement and Display on LCD

jojo March 10, 2016 19 Comments
In this article, we are presenting a tutorial on how to interface LM35 and Arduino along with its program. Once we successfully interface arduino and lm35, we will go on to build a temperature display using arduino and a 16×2 LCD module which constantly monitors temperature around the measurement field/range of LM35 and displays the same on LCD module. So lets get to building the project! LM35 is an analog, linear temperature sensor whose output voltage varies linearly with...
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Burglar Alarm using Arduino and PIR Sensor- with SMS Alarm using GSM Module

jojo December 23, 2016 20 Comments
In this tutorial, we are building an interesting application using Arduino and PIR Sensor. A Burglar Alarm – is basically an intruder alarm or an anti theft alarm. So this project is all about building an anti theft alarm or an intruder alarm using Arduino and PIR sensor. It is possible to enhance this project with many features like adding a GSM module to send SMS alerts to specified mobile numbers when an intruder is detected (when a motion...
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