Resistors in Series – Complete Guide

jojo September 27, 2017 6 Comments
Resistor, the most basic yet essential passive component of an electronic circuit, is nothing but a device that restricts the flow of current. So why is it called passive? It is called so because it dissipates power rather than generating it in a circuit. Some practical resistors are shown in the image below. In this article, we are going to learn in detail about Resistors in Series or in simple words a Series Circuit. The figure 1 (above image)...
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Automatic Irrigation System using Arduino

jojo September 28, 2017 5 Comments
In this project, we are going to build an automatic irrigation system using Arduino which senses the moisture of the soil and opens or closes the valve according to the moisture value. The moisture value and the valve status is shown on the Nokia 5110 LCD display. Before we proceed, let’s take a look at another project – a plant watering system using Arduino, which is very similar to our application. You may also read our other tutorials on...
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DC Motor Speed Control using GY 521 Gyro/Accelerometer and Arduino

jojo August 3, 2017 No Comments
In this article, we are going to control two motors by using the GY-521 accelerometer module. The speed of the motor will increase or decrease upon moving the GY-521 module up or down. On moving the Gy-521 towards the downside, the speed of the first motor will decrease and the speed of the other motor will increase; while on moving the GY-521 towards the upward side, the speed of the second motor will decrease and the speed of the first...
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Building A Real Time Clock using Dot Matrix Display on Proteus

jojo September 28, 2017 2 Comments
Designing a Real Time Clock using Dot Matrix Display on Proteus Objective -Display Time on an 8X32 Dot matrix Display In this article, a Real Time Clock RTC DS 1307 is interfaced with a microcontroller and the time is displayed on a Dot matrix display. The circuit is simulated using the Proteus software. We shall discuss the project in two parts, one is interfacing the Dot matrix display and the other is interfacing the RTC DS 1307. Any RTC...
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Onkyo TX-NR656 A/V Receiver – Review

john September 28, 2017 No Comments
Onkyo TX-NR656 Review There is no shortage of AV receivers in the market nowadays, but products from Onkyo have always been popular with entertainment seeking buyers who do not want to compromise on quality. Onkyo already has several popular AV receiver models in its portfolio and the latest to join the line-up is Onkyo TX NR656.  It comes loaded with latest features sought by audiophiles and entertainment seekers, such as DTS: X and Dolby Atmos support. It is also...
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Onkyo TX-RZ800 7.2 Channel Network, A/V Receiver – Review

john September 27, 2017 No Comments
Onkyo TX-RZ800 is designed to perfection for audiophile of today. The A/V receiver has separate processing blocks and amp, custom capacitors, discrete low-impedance amp circuitry, custom high-current transformer, 32-bit digital signal processor and Asahi Kasei 384 kHz/32-bit DAC for extracting the maximum performance from Dolby Atmos and DTS: X soundtracks. The device provides excellent sound quality along with a perfectly focused audio image. This is possible as the high-current amplifier helps in gripping the speaker drivers with great control...
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Nokia 5110 LCD and Arduino – Ultimate Tutorial and Guide

jojo September 27, 2017 No Comments
Interfacing Nokia 5110 LCD Display To Arduino In this article, we are publishing a project tutorial which explains different aspects of interfacing a Graphical LCD (GLCD ) Nokia 5110 with Arduino. Nokia 5110 is a  48 x 84 graphic LCD that has an internal controller PCD8544 to control all displays and operations. The Nokia 5110 is interfaced to the microcontroller through a serial bus interface. After going through the project you can display the graphics or text you wish...
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DIY Arduino Weather Station using Nokia Display

jojo September 27, 2017 1 Comment
Learn to Build Arduino Weather Station using DHT11, Soil Sensor, and Nokia Display In this project tutorial, we are going to make an Arduino weather station using 2 sensors; FC-28 soil moisture sensor to measure the moisture and the DHT22 sensor to measure the temperature, humidity and the heat index. All the measured parameters (with the help of sensors) will be displayed using Nokia 5110 LCD. Before we proceed further building our Arduino weather station, let’s see some tutorials which is...
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Bluetooth Home Automation using AVR and Android App

jojo September 27, 2017 3 Comments
DIY-Bluetooth based Home Automation Project In this project, let’s see how to design a Bluetooth based home automation project.This article explains the steps involved in the designing of a Bluetooth home automation kit, starting from the configuration of a Bluetooth module. The article also explains how to select an App, read the keywords sent by the App and how to develop a microcontroller program compatible with the selected App. Program file and Program code are provided, which can be...
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Resistivity and Electrical Conductivity – The Complete Guide

jojo September 27, 2017 2 Comments
Ultimate Guide on Resistivity and Electrical Conductivity We know what the electric wires are made of; they are either made of copper or aluminum. We also know that Gold and Silver would have been a better choice, had they been cheaper. However, the question is what makes them suitable for the same? Why don’t we see lead wires? The answer lies in the very basic property of these materials, namely their resistivity and electrical conductivity. This article explains the...
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Arduino Real Time Clock using DS1307 RTC Module

jojo September 28, 2017 67 Comments
Build a Real Time Clock using Arduino and DS1307 RTC Module In this article, we are going to build an Arduino Real Time Clock using DS1307 RTC Module and 16×2 LCD module for display. First of all, let’s see how to interface RTC Module to Arduino. There are different kinds of RTC modules available in the market. We are using the most common RTC module comes named DS1307 IC, an LCD module and Arduino Uno for this tutorial. Interfacing an...
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Interfacing Bluetooth Module

Bluetooth Module Interfacing using HC05 Module and Wireless Communication

jojo July 6, 2017 No Comments
Bluetooth modules are used for short distance and point-to-point wireless data transmission and reception. The range of distance varies from module to module depending on the version of the module being used. For DIY projects, these are available as breadboard friendly modules. Even though these modules (hobby purpose modules) do not provide access to all those pins in the actual module (For Ex:- the GPIO pins ) provided by the manufacturer, these are fairly enough for wireless communication. In...
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LM555 - NE555 - Pin Out Diagram

The History of 555 Timer IC – Story of Invention by Hans Camenzind

jojo July 5, 2017 58 Comments
The 555 Timer IC is one of the renowned ICs, in the electronic circles. However, its history of invention is not known to many. This article takes you on a journey of 555 timer IC from the time of its creation to the present day time. What is a 555 timer IC? A 555 timer IC, is a multipurpose integrated circuit chip, that finds its application in timer, oscillation and pulse generation circuits. It is one of the prominent...
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LCD Brightness Control

Smart LCD Brightness Control using Arduino and LDR

jojo July 4, 2017 No Comments
Smart LCD  with Automatic Brightness Adjusting Using Arduino and LDR Sensor Here is a simple Arduino project that focuses on adjusting the brightness of an LCD screen whenever there isn’t  sufficient light in a room. The Arduino reads the surrounding light intensity using an LDR sensor.  The room temperature and humidity range will also be displayed on the LCD. The entire hardware of this simple project using Arduino can be divided into three parts. The sensors, Arduino board, and the...
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Virtual COM Ports in Proteus – Learn to Interface UART Modules

jojo September 28, 2017 3 Comments
In this chapter, let’s learn how to use the Virtual COM Ports in Proteus software. Virtual ports offer an option to connect the external hardware to the simulation software. The designer can interface any of the UART based modules through the virtual ports in Proteus software. Nowadays, various sensor modules like GSM, GPS, RTC (real time clock)  communicate through the UART Communication Protocol. Such modules can be interfaced with the virtual ports in Proteus. Also, these modules can communicate with the microcontrollers inside...
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RFID based Attendance System using Arduino

RFID Based Attendance System – Learn to Build Yourself

jojo September 13, 2017 3 Comments
An RFID based Attendance System is a very interesting project which can be used in different places say in Schools to register the attendance of students and teachers, Private organizations to tabulate monthly working hours of employees and automatically calculate salary based on the number of hours registered in the office and other similar kinds of applications. An RFID based attendance management system can be designed using different types of microcontrollers, say an 8051 series controller, an AVR, a PIC...
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Nokia LCD Display to 8051

Interfacing Nokia 5110 Display to 8051 Micro Controller

jojo July 1, 2017 1 Comment
In this article, we are publishing a project which explains different aspects of interfacing a Graphical LCD (GLCD ) with 8051 microcontroller. Nokia 5110 is a  48 x 84 graphic LCD that has an internal controller PCD8544 to control all displays and operations. The Nokia 5110 is interfaced to the microcontroller through a serial bus interface. After going through the project you can display the graphics or text you wish to be displayed. So lets begin our tutorial and...
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Internal Block diagram of 555-Timer

555 Timer Circuits in Proteus

jojo June 14, 2017 8 Comments
555-Timer is one of the most popular and mostly used ICs. It best suits for timing/timekeeping related circuits. It consists of two operational amplifiers operated in an open loop or comparator mode, RS Latch with additional Reset input, a discharge transistor, an inverting buffer and an amplifier in the output stage. It has a voltage divider circuit with three 5K Ohm resistors in series. 556 is a dual timer IC. The internal block diagram of 555 is as follows....
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How to Use ADC (Analog to Digital Converter) in AVR – Atmega32

jojo May 19, 2017 3 Comments
Using LM35 Sensor and Atmega32 ADC to measure Temperature Analog to digital conversion is generally needed whenever we deal with a sensor that produces an analog output (for example: LM35 temperature sensor), which is the case for a wide range of sensors. When dealing with such sensors we have to convert the analog signal coming out of them into digital words of ones and zeros so that our microcontroller can process it and make decisions based on it. In...
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Op Amp circuits in Proteus

jojo September 28, 2017 1 Comment
In this chapter, we deal with Operational Amplifiers (Op Amps) in Proteus. The previous chapter was about Transistor Circuits in Proteus. So let’s begin to learn about Operational Amplifiers in Proteus. Op-Amp Circuits in Proteus               Operational amplifiers have a lot of application in analog circuits. In the open loop operation it works as a comparator and gives discrete outputs i.e, +Vsat & -Vsat, whereas in a closed loop operation it works as an amplifier...
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How a Thermostat Works – Tutorial

jojo September 28, 2017 3 Comments
When summer sets in, it can be a misery to wage a battle with the heat. Thankfully, you can turn down the thermostat of your HVAC unit and create a comfortable and pleasant indoor temperature. Similarly, in the winter months, you can crank up the thermostat and keep cozy and warm. Homeowners often don’t pay too much attention to the humble thermostat, which is a cleverly designed gadget that ensures ambient temperature is always comfortable, regardless of the outside...
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10 Things to Consider While choosing a PCB Prototype Service

jojo November 7, 2018 5 Comments
Long gone are the days in which a prototype board was made by the designer himself. For many years, the hallmark of an ideal design engineer (or a big shot electronic hacker) was the ability to make their own PCB’s. The art of crafting a home made PCB has evolved over time, from the use of ferric chloride solutions to laser toner printers and even 3D printers in recent times. Well, as the “home made technology” evolved over time...
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DIY SwitchBoard for Home Automation

jojo September 28, 2017 1 Comment
The idea of home automation is not bounded to houses, the application area can be extended to security systems, auditoriums, function halls, Libraries etc. Home automation is just a catchy usage.Here, the medium for automation is not considered, only the switchboard connections are discussed. Every automation circuit finally has to control a relay through the port of the microcontroller. So, the circuit is similar up to the relay control, it slightly differs at the load terminals of the relay....
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Robot using Arduino and Bluetooth Module (Obstacle Avoidance Robot)

jojo April 27, 2017 3 Comments
This project is designed to build a robot that automatically detects the obstacle on its path and guides itself whenever an obstacle comes ahead of it. This robotic vehicle is built, using Arduino UNO board. An ultrasonic sensor is used to detect any obstacle ahead of it. A motor driver IC and 2 DC motors are used for controlling the movement of the robot. A servo motor is also used in this project. The ultrasonic sensor is then mounted...
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Transistor Circuits in Proteus

jojo September 28, 2017 6 Comments
Proteus software contains a large number of almost all types of transistors. This software can be used as a Transistor selector in circuits designing. This chapter on Proteus explains the basic circuits using transistors and analyzing those circuits with the tools available in the software. Different types of transistors like BJT, FET, MOSFET and some power electronic semiconductor switches like SCR, TRIAC, IGBT etc. are available in Proteus. Mostly BJTs are used for low power and amplifier applications, while...
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