Projects

Reaction Speed Game

January 9, 2021 | Arduino Project

Project Description:
This Arduino-based game tests your reaction speed using LED indicators. When the green LED lights up, you must respond quickly by pressing a button. If your timing is correct, the game advances to the next level, where the LEDs flash more rapidly, increasing the difficulty.

This project demonstrates my understanding of basic electronics, input/output control, and programming logic. Please refer to the circuit diagram and demonstration video below.

Battery Charger using Hand Crank

May 8, 2021 | Arduino Project

Project Description:
This project is a hand-cranked battery charger designed to power devices like power banks or mobile phones when no external power source is available. By turning the crank, a motor generates electricity, which is regulated and delivered as a usable 5V DC output.

Parts Used:

• Battery charge controller IC ×1
  
  

• Stepper motor (replacing original dynamo) ×1
  
  

• Hand crank ×1
  
  

• Arduino Uno ×1
  
  

• Power bank ×1
  
  

• Voltage sensor ×1
  
  

• Voltage regulator ×1
  
  

• Diodes ×2 (for AC to DC conversion)
  
  

• LCD screen (to display voltage)
  
  

Problem Encountered:
The original dynamo generated insufficient voltage to charge a device.

Solution Implemented:
I replaced the dynamo with a stepper motor, which produced a higher voltage output. A voltage regulator was added to step down the generated voltage to a stable 5V, suitable for charging. Diodes were included to convert AC output from the stepper motor into DC. A voltage sensor and LCD display were used to monitor and show the generated voltage in real time.

Please see the demonstration video below.

RC Car Remote-Controlled Car)

May 20, 2021 | Arduino Project

Project Description:
This is a custom-built remote-controlled (RC) car powered by two Arduino boards—one for the car itself and one for the controller. The setup allows wireless control of the car’s movement using a joystick.

Parts Used:

• Arduino ×2 (car + controller)
  
  

• Stepper motor ×2 (left and right wheel control)
  
  

• Joystick module
  
  

• Receiver modules (for wireless communication)
  
  

• Jumper wires and connectors
  
  

How It Works:
When the joystick is pushed in a direction, the controller Arduino sends a signal wirelessly to the car's Arduino. Based on the input, the motors on either side are activated to move the car forward, backward, or turn accordingly.

Secure Realtime Messaging with Login, Register, and OTP Verification 

May 20, 2025 | Full-Stack Web App

Project Description:
This is a secure, real-time chat application built using React (Vite), Node.js, and MySQL. The system includes full user registration and login functionality, enhanced with OTP (One-Time Password) verification for added security. Users can authenticate, send messages, share files, and chat in a clean, dynamic interface styled with custom CSS. Admin-level users like “Hacker” can monitor all conversations, with visual toggles for encrypted content.

Technologies Used:
React (Vite) × Frontend
Node.js × Backend API
MySQL Workbench × Database
Axios × HTTP Requests
Framer Motion × UI Animation
CSS Modules × Styling

How It Works:
A user registers with their email, phone, and password. Upon signup, an OTP is generated and must be verified before access to the chat is granted. After successful login, users can select a contact, send messages or files, and choose whether to encrypt outgoing messages. All chat data is fetched and updated at intervals, with messages stored in the MySQL database. Role-specific logic ensures enhanced visibility or privacy features per user.