What is Blockchain and How Is It Radically Transforming the Economy and Industry?
From Bitcoin's origins to industrial revolution — exploring how blockchain technology is reshaping money, trust, and the future of digital ownership.
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Declaring the Solution: Logic and Constraint Programming with Prolog and Mozart
Prolog and Mozart/Oz: logic puzzles, constraint solving, and four-coloring Colombia's map—university projects where you describe solutions, not steps.
Data Structures in Java: From Linked Lists to an Unbeatable Tic-Tac-Toe AI
Data structures in Java: stacks, queues, trees, graphs, Dijkstra, and an unbeatable Tic-Tac-Toe bot with Minimax—my university course end to end.
OOP in Action: Building a Sudoku Solver and Contact Agenda with Java Swing
OOP in Java Swing: Sudoku with the Observer pattern and backtracking, plus a file-backed contact agenda—two university projects where patterns met real code.
From Parentheses to Pointers: Learning C and Imperative Programming at University
Programming 2 brought C, pointers, memory management, and Allegro games—the semester I learned what the computer actually does under the hood.
My First Steps in Programming: DrScheme, Recursion, and a Function Plotter
Learning to code with DrScheme (now DrRacket): prefix notation, recursion, and a function plotter with derivatives in my first university course.
Blockchain: The Industrial Revolution of the Internet
Why blockchain goes beyond cryptocurrency: supply chains, identity, voting, and how decentralized trust reshapes modern digital systems.
WebVR with A-Frame
Building VR experiences with HTML — my talk at Pereira Tech Talks on A-Frame, Mozilla's framework bringing virtual reality to the web with zero configuration.
Comparative Analysis of Sorting Algorithms
An academic experiment comparing sorting algorithms—complexity analysis and real execution times across two server configurations.
How to Submit Google Forms via Postman and Ajax
Connect a static contact form to Google Forms via HTTP POST — no iframe needed. Step-by-step guide with Postman and jQuery Ajax.
Microservices Architecture and APIs with GraphQL
Why I moved from REST to GraphQL for microservices — divide and conquer, client-defined queries, and the trade-offs you need to know.
Introduction to Blockchain and Ethereum
From Bitcoin's blockchain to Ethereum's smart contracts — demystifying crypto for the Pereira JS community with a live Solidity demo.
What is Blockchain and How Will It Radically Transform the Economy?
I gave this talk at Universidad de Caldas — tracing blockchain from the history of money to building decentralized apps with JavaScript.
Introduction to Meteor.js
My first tech talk ever — building a real-time chat app with Meteor.js from zero to working prototype in minutes, with reactive data and no WebSockets setup.
One Afternoon, One Chat App, One Framework That Changed How I Think
The story of building a fully functional real-time chat with Meteor.js in a single afternoon — to prove to a room full of developers that it could be done.
Music Library PHP: My First Website
The story behind my first web project — a university database course final that became my introduction to PHP, SQLite, and web development.