Use Breadboard to Build a Simple Electronic Projects

Engineering is the application of different technologies like designing, maintaining, innovating,  creating and controlling in order to design, invent, research, build and develop machines, structures, system components, tools, and processes. There are various branches in engineering course which includes electrical, electronics and communication, instrumentation, mechanical, computer science, information technology and so on. The project work for engineering students helps to enhance their theoretical and practical knowledge in designing new innovative projects. This article discusses a set of simple electronic projects using breadboard which is useful for beginners while practicing, implementing a simple project.

Breadboard based Simple Electronic Projects
Breadboard based Simple Electronic Projects

Thus, we recommend students start with these simple projects on the breadboard which are capable of working for them on their first attempt itself. But, beginners should know how to use a breadboard to build a simple electronic project before proceeding with these simple projects. Follow the below link for Top 10 Breadboard Projects for Beginners in Engineering.

Breadboard Projects

Breadboards are one of the most important parts when learning how to design circuits. In this article, you will learn about what is a breadboard, why they are called breadboards, and how to use one. Electronic projects include the soldering of various electrical and electronic components to build various circuits. This process is not economical and also unsafe in case of a fault in circuit designing. So, designing simple projects using breadboard are cheap and easy to check the circuit working without soldering the various components on the printed circuit board. Therefore, these can be called as simple electronic projects using breadboard which can be executed by connecting various components using connecting wires.

Breadboard  based Simple Electronic Projects

To know the basic understanding of what is breadboard and how it works and be able to design a basic circuit on a breadboard please refer the below link: Steps to Building a Project on Breadboard

Prevention of Dengue

Mosquitoes are the most frustrating insects and cause many diseases to humans by drinking blood from human beings, animals, etc. The diseases are dengue, chicken gunya, and malaria, etc.

There are various types of mosquito repellents available in the market such as spray, cream, repellent clothes, and repellent machines. Here sprayed repellents can cause environmental pollution by spreading the chemicals into the air. These kinds of repellents are very harmful to human beings as well as infant babies.


Dengue Prevention kit by
Dengue Prevention kit

This circuit removes air pollution by eliminating the gaseous elements into the environment. This circuit is built with an astable 4047 IC timer. These timers will generate a 1-2khz frequency which can be changed by an adjustable preset. Finally, it drives a buzzer and generates an irritating sound for mosquitos to fly from the surrounding area.

Door Bell Activated  by Foot Step

The doorbell is an electronic device that is used to give an alert to the household when the person visits their house. The proposed system is designed cleverly and gives an alert to the household when the person knocks the door of their house. When the person hit the door, then the piezo sensor receives the sound and alters into an electrical signal which is connected to the main door This signal triggers the IC 555 timer in the monostable mode. The IC 555 timer, in turn, triggers a melody generator through a speaker. The time for the melody sound to be triggered can be fixed using an adjustable RC time constant. Furthermore, the proposed system can be developed with some innovative features.

Foot Step Activated Door Bell Kit by
Foot Step Activated Door Bell Kit

Speed Control of a Motor in Toy

This project is used to control the speed of a motor in the toy. In this project, a BLDC motor is used and the speed of the motor can be controlled by using an RC time constant by changing the resistance using a preset which is adjustable. The applications of the BLDC motor mainly used in industries like in lathes, drilling, spinning, electric bikes, elevators,  etc. The DC motor speed control is very essential. This project gives an effective and precise speed control system.

Toy Motor Speed Control kit by
Toy Motor Speed Control kit

The speed of the motor can be controlled based on the principle of PWM  The designing of this circuit can be done by using an IC 555 timer in an astable mode where the PWM can be adjusted by the RC time constant. This modulation can be done by simplifying changing the resistance. The % of the desired speed, speed can be fixed by using an adjustable pot offered in the above circuit. The IC 555 timer carries the desired pulse width to routinely adjust the DC power to the BLDC motor for the required speed. The motor in the toy is driven by two NPN transistors which are coupled in the form of a Darlington pair. Thus avoiding the MOSFET usage are expensive.

Smart Security Reminder

Alarms are used in security systems and also in the event of any emergency or expected situations. This proposed system is used as a smart security reminder, which will trigger in the event of any security break.

Smart Security Reminder Kit by
Smart Security Reminder Kit

The concept of this project is based on an event of a door opened for more than 30sec. But, the authorized person knows that they have to close the door in the 30 seconds limit time, then there will be no event for activation of an alarm. When the door is opened for a long time, then the alarm will automatically activate and continuously gives beep sound. In the above circuit, a switch is fixed to press down for a specific time then it starts beeping sound. A buzzer is used to give an alert. The circuit is built with a capacitor and a NAND gate which will automatically charge & discharge to provide a beep sound.

Thus, this is all about simple electronic projects for beginners using a breadboard. We hope that you have got a better understanding of this concept. Are you keen to build solder-less breadboard simple electronic projects or any technical assistance, please give your suggestions by commenting in the comment section below.


  1. Fitflop Flower Sandals says:

    It is really a great and useful piece of info. I glad that you shared this useful info with us. Please keep us up to date like this. Thank you for sharing.

  2. T.rishika says:

    Hi this is rishika of ece second year
    I went through this page ,but there were several projects to opt
    can anyone whose is running this page can suggest a best project (something which is not known to manypeople)without using microcontrollers

  3. Muhammad Aqeel says:

    Can you tell me about 1000 watt ups construction by inverter circuit?

  4. hi sir,
    i want the components with ratings to do electronic eye based security system(using resistors&capacitors)

  5. Tanna Utsav says:

    Hi Mr.Tarun Agarwal
    My self Tanna Utsav
    sir can you just say me that exatly what type of equepments require to make (Door Bell Activated by Foot Step)

  6. hi i like the projects

  7. can u pls send me a circuit diagram(not block diagram)for iot garbage monitoring system?

  8. Can i get a circuit board + components of a rc bluetooth controlled car if available thanks

  9. how get free source code

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