Interface 7 Segment Display to AVR Atmega32 using CD4511B

jojo April 5, 2017 2 Comments
Seven Segment Display operation using Atmega32 and CD4511B Seven segment display is a frequently used device found in several applications such as queuing systems, some types of clocks and calculators. So in this article, we explain how to Interface a 7 Segment Display to the AVR Atmega32 MCU and get it working. Note: We have published several other interfacing tutorials of 7 segment displays like Interfacing 7 segment to 8051, Interfacing  Arduino to 7 Segment Display, and a Proteus...
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Interfacing Accelerometer to Arduino

jojo April 4, 2017 No Comments
In this article, we are going to interface the GY-521 accelerometer with Arduino. The GY-521 has an InvenSense MPU6050 chip which contains a 3-axis accelerometer and a 3-axis gyro meter. This makes it a 6 DOF IMU (6 degrees of freedom inertial measurement unit). The chip also includes a 16-bit analog to digital converter on each channel and a DMP (Digital Motion Processor) unit. The DMP unit is responsible for combining the raw data and performing some calculations to remove...
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DC Motor Speed Control using PWM in AVR Atmega32

jojo March 24, 2017 2 Comments
How to control DC motor speed using PWM on Atmega32 Using PWM (Pulse Width Modulation) to control a device is a common practice in embedded systems; for example, you can use it to control the light intensity of a LED or control the speed of a DC motor. In this article, we will explain how to get a PWM from the AVR Atmega32 and we shalll apply the output PWM to a small DC motor to vary its speed. In...
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Electrical Safety Tips – Ultimate Guide

jojo April 7, 2017 No Comments
Technology and science have made homes (and workplaces) more comfortable and pleasant. People often overlook electricity as it is omnipresent to illuminate homes and operate appliances and gadgets. However, as beneficial electrical currents are to illuminate homes, workplaces, and streets, they can also cause severe injuries; and sometimes these injuries can be fatal. Injuries Due to Electrical Current The human body is a better conductor of electricity than many materials around us. Hence, if electricity does not find a...
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Top 8 Countries with High Salary for Electronics Engineers – Infographics

jojo April 17, 2017 No Comments
Hi everyone, We are publishing a new Infographic in this post, featuring the Top 8 Countries with High Salary for Electronics Engineers. Our first Infographics was on the History of Electronics – which we published a few years back. We received a very good response for that infographic from our readers. However, owing to lack of time for quality research we kept ourselves from publishing another one till date. Finally, here we are with another interesting infographic which is going...
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Digital Integrated Circuits in Proteus

jojo May 7, 2017 No Comments
Proteus software has a big and vast collection of Digital IC library. This software can be used as an IC selector in digital circuits designing. Circuit designers don’t need to waste time searching the availability of various IC’s for the application. This library provides information of the IC’s along with their commercial nomenclatures and manufacturer details. Components can be easily searched within the library using keywords like AND Gate, OR Gate, flip flops, decoders, counters etc. The description part provides...
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Pulse Sensor Arduino

Pulse Sensor and Arduino – Interfacing

jojo March 20, 2017 2 Comments
In this article, we are going to interface a Pulse Sensor with Arduino. The pulse sensor we are going to use is a plug and play heart rate sensor. This sensor is quite easy to use and operate. Place your finger on top of the sensor and it will sense the heartbeat by measuring the change in light from the expansion of capillary blood vessels. Pin Out – Pulse Sensor The pulse sensor has three pins which are as described...
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Arduino Color Sensor

Interface Arduino and Color Sensor – RGB Sensor TCS230

jojo March 16, 2017 1 Comment
In this article, we are going to read the colors using the TCS230 color sensor (RGB Sensor) and Arduino Uno. The TCS 230 color sensor senses the color light by using the photodiodes. The sensor converts the readings from the photodiode into a square wave by using the light to frequency converter. The frequency of these waves is directly proportional to the light intensity. Then the Arduino reads these square waves and gives us the values of the RGB colors....
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How to Interface an External EEPROM with AVR Atmega32

jojo March 13, 2017 No Comments
In this article, we will explain how to communicate to an external EEPROM from the AVR Atmega32 MCU using the I2C communication protocol. So let’s begin our tutorial on how to interface an EEPROM (AT24C16A) with AVR Atmega32. You will usually need an external EEPROM when your system has a certain set of user configurable settings that you need to save even when the system is powered off; so that the system starts with these configurations the next time...
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Arduino and Soil Moisture Sensor -Interfacing Tutorial

jojo July 31, 2018 18 Comments
In this article, we are going to interface a Soil moisture sensor FC-28 with Arduino. This sensor measures the volumetric content of water inside the soil and gives us the moisture level as output. The sensor is equipped with both analog and digital output, so it can be used in both analog and digital mode. In this article, we are going to interface the sensor in both modes. So let’s begin our tutorial on interfacing Arduino and Soil moisture...
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Circuit Analysis using Virtual Instruments in Proteus

Narasimha March 8, 2017 No Comments
This chapter is part of our Proteus Tutorial series. In this chapter we explain circuit analysis using virtual instruments in Proteus.  Oscilloscope Proteus provides oscilloscope, which is a very essential instrument for analysis purpose. The Digital Storage Oscilloscope is featured as: 4-Channel input 2 MHz sampling frequency Invert option for each channel Relational output between channels Input coupling type selection Source selection between channels Adjustable Volts/Div through Knob or manual entry in textbox Auto/One-shot selection for output update Cursor placements...
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DIY Motion Sensor Light using LED Bulb and PIR Sensor

Narasimha March 8, 2017 6 Comments
This project is a DIY Smart Light Adapter – which aims to build a smart light bulb based on your ordinary light bulb (which can be a CFL or an LED lamp) and a PIR sensor. The final output will be a light bulb that turns ON based on motion around a particular area within the range of PIR sensor attached to the ordinary light bulb. So lets begin! If you are not willing to re-wire your home for...
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10 Things You Need to Know Before Buying Connectors

jojo March 1, 2017 1 Comment
Electrical connectors are used to join sections of a circuit. They play a crucial role in the overall working of an electrical component. Thousands of electrical connectors are available and each has its own unique features. They come in all sizes and shapes, from small IC to huge power connectors carrying high currents. With advancements in manufacturing technology, the size of connectors has decreased, while keeping their sturdiness intact. Take for instance pin headers. As the name suggests, these...
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Types of Drones – Explore the Different Models of UAV’s

jojo February 3, 2017 1 Comment
A “Drone” is basically an Unmanned Aerial Vehicle(UAV)  – an aircraft without a human pilot aboard. In this article, we explore the different types of drones out there in the market – some of which are just concepts, while most others are already in action. “Drones” can be classified on a different basis – say based on ‘usage‘ like Drones for Photography, Drones for aerial Mapping, Drones for Surveillance etc. However, the best classification of ‘Drones’ can be made on...
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Rigol DS1102E 100MHz Digital Oscilloscope – Review

john June 20, 2017 1 Comment
The Rigol 1102E oscilloscope is an exception when comparing the abundant features it provides for its economic price. This Rigol DSO model is one of the most selling product in its 100 MHz category and finds it vast application in research and development (R&D) wing, technical education, field engineering, electronics and electrical engineering laboratories, and many more. This was one of the first and still the best rigid oscilloscope to provide high scale digital signal processing. Some of its...
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Analog Oscilloscope vs Digital Oscilloscope

john June 20, 2017 No Comments
For electronics hobbyists, engineers and technicians, buying a new oscilloscope can be a bit of a challenge because the brand to choose from, and the specification each one of them provide, and when comparing the cost, is in abundance. So we have put together a form of perspective to guide you in choosing an oscilloscope. As A Beginner Forget about the specs, the cost, and all other technical aspects of the oscilloscope and ask yourself these questions: Do you...
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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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