Advanced Electronics Mini Projects for Engineering Students

Electronics is the technology mainly concerned with the development of circuits for television, personal computers, and all other electronic equipment. This kind of electronic equipment makes use of silicon chips or transistors and other basic electronic components. Electronics mini projects for engineering students are developed by concentrating on many application areas such as control systems, computer applications, and telecommunications, etc.

3 Simple Electronics Mini Projects with Circuits

1. Automatic Railway Gate Controller with a High-Speed Alert System

The automatic railway gate control system automatically controls the operation of railway gates by detecting the arrival and departure of trains at the gate. Detectors are placed at a faraway distance on a railway track to detect the arrival and departure of a train. Detectors are connected to a microcontroller, which activates the motor to perform the mechanical action of opening and closing the railway gate.

The main aim of this project is to operate and properly control an unmanned railway gate to avoid accidents at the unmanned railway crossing. The following project is designed to overcome the accidents that have become common in our day-to-day life, particularly at the railway crossing gates.

Circuit Operation

The explanation of the operation of the circuit is brief for better understanding. The circuit consists of four IR LEDs, and the Photodiodes are placed on either side of the track.

Automatic Railway Gate Controller with a High-Speed Alert System
Automatic Railway Gate Controller with a High-Speed Alert System

Initially, the IR LED is the transmitter that continuously transmits IR light and allows it to fall on the receiver. When a train arrives, it blocks the light falling on the receiver. Let us consider that the train is moving from left to right and the first sensor pair acts as a counter and gets activated when the train blocks it, and then the second sensor pair stops working as a counter.


The counter values generated here are used to calculate the velocity of the train. The out of sort sensor 2 is sent to the microcontroller, which in turn makes the relays active, and then the gate gets closed. When the train blocks the last carriage of the track then the relays get deactivated and the crossing gate is opened.

This project is programmed in such a way that it is advantageous in calculating the velocity of the train. If the speed of the train exceeds its limit, then the passengers are alerted by activating a buzzer as an indication that the train is moving at over speed.

2. 8051 Microcontroller Based Electronic Locker System

Nowadays security is a major problem for houses, banks, and jewelers due to an increase in cases of robberies owing to insecure systems. To overcome this problem, this article demonstrates the implementation of a microcontroller-based electronic locker system to resolve this problem. An electronic lock is a device that has an electronic control assembly attached to it and is provided with an access control system.

The project is intended to set up an electronic security system at homes by developing a locking system that involves password-based access to rooms and buildings.

8051 Microcontroller Based Electronic Locker System
8051 Microcontroller Based Electronic Locker System

The major components used in this project are 8051 microcontrollers, an LCD display, and a motor. The design of this system is such that programming is done in the microcontroller itself. The LCD and Switches are given as input and output to the microcontroller. The LCD data pins are connected to the port1 pins of the microcontroller, and L293D is used to rotate the motor bidirectional for opening and closing the door.

A microcontroller-based door lock is an access control system that allows authorized persons to access a restricted area. The system has a keypad for entering a password. If the password entered is correct and matches the password stored in the microcontroller, then the door gets opened with the help of the motor. If the password entered comes as wrong after attempting it thrice, then the alarm gets switched on.

3. Automatic Parking Slot Indicator using Microcontroller

If we take a look at the present world scenario, there is a necessity for saving the parking place in big companies, apartments and shopping malls, etc. More and more multi-stored buildings are springing up every day causing lots of parking problems. Lack of space, huge construction activities cutting down trees, and deforestation are leading to harsh and adverse effects on the environment.

This project is intended to save the ground space required for parking. By using this system, a huge number of cars can be parked according to the requirement, on floors that are one above the other.

Block Diagram

Automatic Parking Slot Indicator
Automatic Parking Slot Indicator

In this car parking system, there is an IR transmitter and receiver for the parking slot. IR receivers are connected to the microcontroller. Whenever a car is parked in the parking slot, the IR rays are obstructed, and the microcontroller comes to know which slot is empty and which slot is occupied, and then displays the result on the LCD. Furthermore, Light-emitting diodes are used as an indication for showing the empty slots. LEDs are placed at the entrance of the parking slot to minimize human interference for monitoring car parking.

Circuit for Automatic Parking Slot Indicator using Microcontroller
Circuit for Automatic Parking Slot Indicator using Microcontroller

In this circuit, the sensors are replaced by the switches and are connected to the port 1 of the microcontroller. Whenever a car parking slot is filled, the switches turn on and the LEDs glow as an indication to show the unoccupied slots and the LEDs turn off to show the parking slots that are filled. The LCD is connected to the port 3 of the microcontroller and the parking status is sent to the microcontroller to make it being displayed on the LCD.

Thus the electronics mini project ideas are prominent for getting practical knowledge before the engineering course. By keeping in mind the importance of such project ideas, this article also provides a simple electronic mini-projects’ list helpful for the students during their academic year to gain the basic knowledge of designing and developing circuits.

Electronics Projects for Engineering Students

  1. Power Theft Identifying System using an 8051Microcontroller
  2. Motion Control of a Mobile Car Robot Using PIR Sensors
  3. Seven-Segment Display Based Water Level Indicator
  4. Distance Measurement System by Ultrasonic Sensor
  5. Electronic System Locking Module Using Microcontroller
  6. Intelligent Glass BreakingDetector Using Microcontroller
  7. Wireless Remote Weather Monitoring System Using Zigbee Communication Technology
  8. Semi-Automatic Remote Controlling Of a Diesel Generator
  9. 7806 Voltage Regulator Based Automatic Room Light Controller
  10. Dissolving Process Controller Using Microcontroller
  11. Microcontroller Based Automatic Parking Slot Indicator
  12. 8051 Microcontroller Based Security Access Control System
  13. Monitoring and Controlling Of Six Channel Petrochemical Fire
  14. Digital Over Voltage Protection System for Industrial Loads Using PIC Microcontroller
  15. LDR Based Industrial Protection System

Mini Projects for Engineering Students

Electronics plays a major role in our daily life. The electronics concept deals with various small and large circuits such as resistors, diodes, and batteries, etc. Many of the people are showing interest in learning things related to electronics by choosing various electronics branches of engineering. Keeping such electronics engineering students in mind, here we have collected a list of simple electronics mini projects that are immensely helpful during their academics.
These electronics mini projects for engineering students involve different technologies like IR, GSM, RF, etc., and different types of microcontrollers such as 8051, AVR, and ARM microcontroller.

  1. Infrared and Light Dependent Resistor based Automatic Room Light Controller with Visitor Counters
  2. Investigation of Handover Types in Wireless Communication System
  3. AT89S52 Microcontroller Based Monitoring and Controlling of Wireless Equipments
  4. Railway Track Based Electrical Power Generation System
  5. RF/IR/Zigbee Based DC Motor Speed and Direction Control
  6. Supervisory Control and Data AcquisitionSystem for Real-Time Electrical Parameter Monitoring and Control
  7. Digital devises Controlling System Using Touch Screen Graphical Liquid Crystal Display
  8. Temperature Monitoring and Controlling System by using Touchscreen with Graphical LCD
  9. Portable Battery Charger by Renewable Energy Sources
  10. Fingerprint Based Security System Using PIC Microcontroller
  11. Simple Knock Alarm System Using Piezo Sensor
  12. Seven-Segment Digital Display Based Automatic Brightness Control
  13. GSM Unmanned Arial Photography by Remote Flying Robot
  14. Hardware Authentication Dongle by Finger Print Recognition
  15. Light Dependent Frequency Variation Using Light Dependent Resistor

This article is all about the electronics mini projects for engineering students and also includes mini-projects circuits. Thus, the given list covers all the latest and fast-moving projects over a wide range of applications. If you are interested in any of these project ideas and need technical help please comment below.

Photo Credits

  • Electronics mini projects for engineering students by engineeringminiprojects
  • Automatic Railway Gate Controller with a High-Speed Alert System by cloudfront
  • 8051 Microcontroller Based Electronic Locker System by electronicswork
  • Automatic Parking Slot Indicator by projectsof8051
  • Circuit for Automatic Parking Slot Indicator using Microcontroller by blogspot


  1. Did u have 3phase to 5 phase transformer.please i need urgently
    Give reply fast….

  2. R.Tejaswini says:

    hiii i’m tejaswini studying 2nd ece i’m intrested to do a mini project for that i selected generation of electricity through speed brackers so please suggest me is it is good to do if its a good project give any suggestions to me.

  3. TONY EGHIYO says:

    Hiee, i really like what your doing. please can you suggest a project topic on robots that uses 3 actuators and 3 motors? I REALLY NEED TO START WORKING ON IT ASAP

  4. Hello. Can you please suggest a topic that involves any 3 of multiplexers, decoders, encoders and flipflops

  5. Atotuno Daniel says:

    Please can you give me full details on how to carry out this mini-project topic:
    Simple Knock Alarm System Using Piezo Sensor. Including the cost of the mini project

  6. Hii i am 2nd eee student.please suggest me one project this is my first project

    1. Tarun Agarwal says:

      Hi Mounika
      I sincerely appreciate your kind response regarding my article

  7. Can u give a full detail ofautomatic railway gate controller with high speed alert system

  8. Nida fathima says:

    Hello, i’m nida fathima.Can u please, suggest me any good idea for mini project in electrical and electronic field. As this is my first project…

  9. helloo ,i am confused,please help me in selecting the best project,ths wil be my first project

    1. Tarun Agarwal says:

      Hi Pooja,
      Thanks for your Appreciation.
      For further any help please contact Niranjan on +91-9959178000.

  10. i need the whole project of Automatic Parking Slot Indicator using Microcontroller with its c code ,please help me?

  11. sowndaryaseasathri says:

    I need a more ideas about how to do projects

    1. For more help .. Contact me at 8012352852

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