Electronics projects, hobby circuit diagrams, college projects for students or electronics enthusiasts. Including detailed working explanation, pcb design and 100% working.

Web Controlled Servo Motor – Arduino – IoT Project

Internet of things has taken over all the heavy loads from human to itself. IoT is an ecosystem of connected physical objects that are accessible through the internet. As Automation is used to help mankind in various environments if we combine the automation and Internet of things we can achieve more than we can think of. In this project, we are going to control the servo motor from webpage by using Arduino Uno. The webpage will be created using ESP8266 module. The...

Calculator using Arduino Uno

Arduino Uno has always helped to build projects easily and make them look more attractive. In this project, we are going to make an Arduino Uno calculator which will take the values from user by using the 4X4 keypad and then will perform the calculations to get the result. After calculating the result, it will print those calculated values on Nokia 5110 LCD. This Arduino Uno based calculator can perform four operations which are addition, subtraction, multiplication and division. Components Required ...

Home Automation using Bluetooth and Mobile App

Technology is a never ending process. To be able to design a product using the current technology that will be beneficial to the lives of others is a huge contribution to the community. Generally in today’s modern world human beings are addicted to using modern equipment. So here we can perform home automation by using an Android App and Bluetooth as a wireless communication medium. Home automation not only refers to reduce human efforts but also energy efficiency and time...

Wailing Siren using 555 Timer – Hobby Project

Today we shall talk about a really amazing circuit that produces a sound of a siren. There are different types of circuits that produce different kinds of sounds. Here is a simple circuit that produces wailing siren. The main principle of this circuit is to produce a wailing siren. The 555 timer IC is operated in astable mode. When the switch is pressed, speaker produces high pitch siren and when it is released, its pitch decreases and is switched off...

Mobile Phone Detector Circuit

This is a very interesting hobby project which can detect active mobile phone or GSM communication in its proximity. Active mobile phone means there is some live communication is going on like calls, sms sending or receiving etc. This circuit can be used to prevent unauthorized use of mobile phones in examination halls, conference rooms etc. As you already know, today's mobile phones (2G, 2.5G, 3G, 4G, LTE) are operating in electromagnetic signals ranges from 700MHz to 3500MHz. Each countries...

Controlling DC Motors using Arduino and IR Remote

In this project we will learn how to decode IR remote signals with Arduino and to control DC motors depending on the button pressed. For demonstrating the working we are using five buttons on the remote. When the next button on the remote is pressed, motors will rotate in clockwise direction. And if the previous button is pressed motors will rotate in anticlockwise direction. We can also control these two motors individually using left, right arrow buttons and stop...

Digital Thermometer using Arduino and DS18B20 Sensor

In this project, we are going to make a Digital Thermometer using Arduino Uno. We will use DS18B20 temperature sensor to sense the temperature and Nokia 5110 LCD to display it. DS18B20 is a 1-Wire digital temperature sensor manufactured by Maxim Integrated and is capable of reporting degree celsius with 9 ~ 12 bit precision. Components Required Arduino Uno DS18B20 Temperature Sensor Nokia 5110 LCD 1KΩ Potentiometer 10KΩ Resistors - 4 4.7KΩ Resistor 1KΩ Resistor 330Ω Resistor Connecting Wires Breadboard Circuit...

Temperature and Humidity Data Logger using Arduino

In this project, we are going to make a temperature and relative humidity data logger. Arduino is the brain of this project. DHT22 sensor is used for sensing temperature and relative humidity. Arduino Uno is programmed to read temperature, humidity values from DHT22 sensor and save it to a file in an SD Card. So whenever required we can take the SD Card for viewing data. Here we will take data from SD card and import it to excel...