Before UAVs. Before deep learning. Before AIT. Before any of that — there was a whiteboard, a problem statement, and two students from JNTUH Hyderabad trying to build something real.

This is the story of College Buddy.

The Problem We Saw Every Semester

Every engineering student knows the ritual. You buy expensive textbooks, lab manuals, and course materials at the start of the semester. By the end, they’re collecting dust under your bed. At the same time, your juniors are scrambling to buy those same materials — often at the same full price from the campus store.

There was no marketplace. No platform. No bridge between the senior with a pile of unused books and the junior who needed them without burning through their monthly budget.

We saw the gap. We decided to fill it.

What We Built

College Buddy is a peer-to-peer e-commerce web platform designed specifically for university students to buy and sell used academic resources — books, furniture, utensils, electronics, and anything a student needs during their course.

The core features:

  • Seller-side: Post items with descriptions and prices
  • Buyer-side: Browse, search, and connect with sellers directly
  • Admin panel: Full CRUD control over users, listings, and database
  • Authentication: Login with brute-force protection (3-attempt lockout)
  • Responsive design: Accessible from any device, intuitive for non-technical users

Tech Stack:

  • Frontend: HTML5, CSS3, JavaScript, Bootstrap
  • Backend: PHP, SQL
  • Libraries: jQuery, Font Awesome, Animate.css

What I Actually Learned

Building this was the first time I truly owned a product end-to-end. I wasn’t just writing code — I was thinking about users, system flows, security, database design, and performance benchmarks. That distinction matters.

Some concrete lessons that still shape how I think today:

  1. Product thinking before technical thinking. The first thing we wrote wasn’t code — it was a problem statement. Why does this need to exist? Who needs it? What does success look like?

  2. Backend is where the product lives or dies. The frontend was fun, but the SQL schema, PHP session handling, and admin role management were where the real decisions happened.

  3. Real users behave differently from test users. Our usability spec said 0.05 seconds for a user to decide if a page is worth their time. That sentence changed how I thought about every UI element.

Looking Back

College Buddy was modest by current standards. PHP and SQL are not the technologies I work with today. But this project planted something important: the instinct to identify a real problem, design a system around it, and ship something.

That instinct showed up again in my Master’s thesis — just with UAVs, YOLO models, and 1-billion-parameter segmentation networks instead of bootstrap components and SQL queries.

Every product I build from here carries a little College Buddy in it.

Full Paper: College Buddy

Built at JNTUH University College of Engineering, Hyderabad | B.Tech, Computer Science and Engineering | 2022
Supervised by Dr. Hemalatha Eedi