Category: Electronics Projects

Adjustable Dual Timer Circuit using 555 Timer IC

Engineeering Projects
author prototype of dual timer device

Timer IC 555 is one of the most versatile and most used IC because of it’s much more application like PWM amplifier, delay timer, switching circuit, duty cycle selector, clock pulse generator etc. This can also be used in various application like accurate timing, sequential timing, time-delay generation etc. The project Adjustable Dual Timer Circuit using 555 Timer IC is also one of the applications of 555 timer IC. By using this project one can switch two different appliance one after another for adjustable timing (1 Minute to 10 minutes).…

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Temperature, Humidity and Heat Index Meter using Arduino

Engineeering Projects
author prototype of temperature humidity and heat index meter

Temperature and humidity are one of the essential parameters of environment for various projects like greenhouse, home automation, weather station or other various industrial automation. Sometime we also need to find feel temperature or apparent temperature that we feel and it is called Heat Index. Heat Index can be defined as an index which accounts both air temperature and relative humidity of an environment. In this article we are going to build a temperature, humidity and heat index meter using arduino and DHT11. Circuit of Temperature, Humidity and Heat Index…

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ESP32 Based Real Time Corona Case Counter

Engineeering Projects
world corona real time counter

Novel coronavirus (Covid-19) is declared a pandemic by WHO. Almost all country is suffering and most of them are in a lockdown situation. Hundreds of thousands are infected and thousands are dead and this number is increasing exponentially. Only emergency services like hospitals, electricity, water supply are in operation with possible precautions. People are not allowed to step out of their homes. Some websites like Worldometers, Corona Virus Esri API show real-time corona cases, the number of recovers, deaths, etc. Based on the data displayed over this website we will…

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Square Wave Generator using 741 IC

Engineeering Projects
author prototype of Square Wave Generator using 741 IC

Op-amp 741 IC is one of the most popular and versatile operation amplifiers and can be used in a lot of applications including, comparators, wave generator amplifiers, etc. Today, we came up with another application of 741 IC i.e. Square Wave Generator using 741 IC. Objectives of Square Wave Generator using 741 IC: To design a square wave generator To describe the working of the square wave generator. Circuit diagram of the square wave generator The circuit of the square wave generator is shown in the figure below. One capacitor…

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Multiplexer IC Interfacing | CD4051

Engineeering Projects
author prototype of multiplexer cd4051

In this article, we will discuss Multiplexer IC interfacing and different type of multiplexers like Quad 2-input Multiplexer, Dual 4-input Multiplexer, and 8-input multiplexer. We will also show you how to interface with 8-channel multiplexer IC CD4051. Quad 2-Input Multiplexer | Multiplexer IC Interfacing | CD4051 Description: One of the most widely used digital multiplexer configurations is the quad, 2 -input version illustration in figure 1. This particular IC is non-inverting and consists of eight AND and four OR circuits, arranged so that two sets of 4-bit inputs can be…

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Noise Free Dual Polarity 12V Power Supply Circuit

Engineeering Projects
author prototype of noise free power supply unit

Power supply has been considered a role in an electronic circuit. Power supply furnishes the voltage and current requirements for electronics circuit operation but the problem is most of the electric power is generated as AC power. But for the operation of most of the electronics circuits, we need a DC power supply. Sometimes the output of the power supply consisting unwanted ripple components i.e. component of supply frequency and its harmonics. We should take care of this unwanted noise or harmonic components because this might cause problems (especially in…

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Arduino Based multiple Device Control using Interrupt

Engineeering Projects
device-control-using-interupt

In the project “Arduino Based multiple Device Control using Interrupt” you will learn how to control multiple appliance with two switches by using the concept of interrupt. In this prototype we are going to control four devices using two interrupt pin (switch). You can increase or decrease the number of devices according to your requirement but number of switches is same (two). When button is pressed, interrupt sun-routine is called and control algorithm runs. Features of Arduino Based multiple Device Control using Interrupt: Only two button switches are used to…

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IOT Based Device Controlled with Security

Engineeering Projects
IOT Based Device Controlled with Security

IoT is getting popular and better day to day, due to its advantage like remote control, user-friendly, securer control of appliance, etc. So, today in this article we are going to design an IoT Based Device Controlled with Security using Node MCU. The reason of selection Node MCU for this project is cheap, powerful as well as Arduino compatible. With the purposed design is shown below one can control different electrical devices securely. You can increase and decrease the number of devices according to your requirement with little modification in…

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How to Configure Arduino IDE for Node MCU

Engineeering Projects
How to Configure Arduino IDE for Node MCU

Today in this article we will be going to show you “How to configure Arduino IDE for Node MCU” and also show you how to solve the uploading problem in NODE MCU. By default, we cannot program Node MCU using Arduino IDE, we have to configure our IDE. Here, we will show how to configure Arduino IDE for Node MCU step-wise. At first, let’s see what is Node MCU. Node MCU is an open-source development kit like Arduino board, it is a prototyping model which helps hobbyist and engineers. Node…

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Three Phase AC Voltage Measurement using Arduino

Engineeering Projects
Three Phase AC Voltage Measurement using Arduino prototype

Today, in this article, you will learn how to make Three Phase AC Voltage Measurements using Arduino. At first, we will show you how to measure single-phase AC voltage and then measure three-phase AC voltage. Features of Three Phase AC Voltage Measurement using Arduino: Can measure AC voltage of any amplitude. Show individual phase voltage. LED indication for individual phase voltage. For the protection of the control board (Arduino Board), a variable resistor is used i.e. output voltage must not be more than 4.5V even when Zener diode burnout. Working…

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