Nabil Bin Billal
Archive

Everything I've built

The full collection: web platforms, AI experiments, open-source libraries and robotics. Each entry includes my role, the challenge and what shipped. Click any project for the full case study.

AI / MLFeatured

Bidibo AI — Smart AI Assistant

A state-of-the-art custom AI model designed, trained and optimized for agricultural pathology, with 85,000+ training images and 152 neural layers.

My role
Design, training and optimization of the full model
Challenge
Reaching high accuracy at low latency on constrained hardware required aggressive architecture tuning.
Outcome
98.5% peak accuracy with <0.4s inference speed.
AI/MLPythonTensorFlowComputer Vision
Web PlatformFeatured

BGC Olympiad Portal

A complete digital platform for Science Olympiad management — online registration, automated admit cards, agent tracking, analytics and QR verification.

My role
Lead developer (end-to-end)
Challenge
Coordinating registration, verification and analytics under real event deadlines.
Outcome
Ranks #1 on search engines for its niche.
ReactNode.jsMongoDBQR CodeAnalytics
Live project
Web PlatformFeatured

BGC Science Club Website

Official platform for Brahmanbaria Govt. College Science Club — member management, event coordination and a full content management system.

My role
Lead Developer & Website Manager
Challenge
Building 23,000+ lines of code alongside studies, then maintaining daily operations.
Outcome
Serving thousands of students; a core digital hub for the club.
ReactNext.jsNode.jsMongoDBTailwind CSSJWT Auth
Live project
Tool

Arrow Saviour — Chrome Extension

Chrome extension that adds customizable skip buttons to HTML5 video players for worn-out arrow keys.

My role
Solo developer
Challenge
Universal compatibility across video platforms with varied player internals.
Outcome
Multiple display modes, adjustable sizes; available on GitHub.
JavaScriptHTML5CSS3Chrome Extensions
Source
Tool

Slide Cleaner by Bidibo

Offline client-side tool converting classroom slides into print-friendly notes — cleans dark backgrounds, custom layouts, exports high-quality PDFs.

My role
Solo developer
Challenge
Rendering slide layouts and PDF export entirely on the client with zero uploads.
Outcome
Privacy-focused, no server processing.
ReactJavaScriptPDF Generation
Live project
Open Source

BanglaNLP

Free and open-source Python toolkit for Bangla NLP — tokenization, stopwords, POS tagging, NER and sentiment analysis.

My role
Creator & maintainer
Challenge
Building editable, modular tooling for an under-resourced language.
Outcome
Open-source with fully editable datasets.
PythonNLPMachine Learning
Source
Open Source

PHPBanglaDate

Lightweight PHP library converting English timestamps to Bangla dates with leap-year support and no dependencies.

My role
Creator & maintainer
Challenge
Correctness for Bangla calendar edge cases (leap years, date-change hours).
Outcome
Three ready-made demo designs included.
PHPLocalization
Source
Web Platform

Bidibo News

News portal where users can read and publish articles, with authentication, article management and a modern responsive design.

My role
Full-stack developer
Challenge
User-generated content with secure auth and moderation flows.
Outcome
Live at bidibo.xyz.
PHPLaravelWordPressNode.jsSQL
Live project
Web Platform

Bidibo's Science Hub

Comprehensive science communication platform with articles, Q&A and educational resources.

My role
Full-stack developer
Challenge
Merging content management with community features.
Outcome
Live at science.bidibo.xyz.
ReactNext.jsNode.jsMongoDBTailwind CSS
Live project
Web Platform

Notun Protidin

Bangla news website delivering local news and articles for a Bengali-speaking audience.

My role
Full-stack developer
Challenge
Fast, SEO-friendly Bengali content delivery.
Outcome
Live at notunprotidin.xyz.
PHPLaravelWordPressJavaScriptSQL
Live project
AI / ML

BGCPlantDoc

AI-driven crop disease detection with real-time analysis, nutrient guidance (NutritionDoc) and gardening tips (GardeningDoc).

My role
Developer & researcher
Challenge
Balancing model accuracy with real-time web inference.
Outcome
1st place, Science Fair 2026.
PythonComputer VisionReact
Live project
Mobile

BGCPlantDoc Mobile App

Cross-platform mobile version of BGCPlantDoc built with Capacitor, wrapping the web app into a native Android experience. Available for direct install from the website.

My role
Developer
Challenge
Converting a React web app into a smooth native mobile experience using Capacitor while maintaining all AI features.
Outcome
Available for install at plantdoc.bgcscienceclub.org/install; runs natively on Android devices.
CapacitorReactAndroidTypeScript
Live project
Web PlatformFeatured

BGC Science Olympiad 2026

Full evaluation system for the BGC Science Olympiad: auto-fetches student data from the Olympiad database, enables marks entry and instant record generation. Includes a results leaderboard, analytics matrix (total registered, appeared, participation insights) and Excel/PDF export.

My role
Lead developer (end-to-end)
Challenge
Evaluating 118 answer sheets across 4 sets (Alpha, Beta, Gamma, Delta) under tight deadlines, while ensuring accuracy and fair tie-breaking.
Outcome
Entire evaluation of 118 sheets completed in under 1 hour. Results leaderboard and analytics deployed; PDF export ready for official announcement.
ReactNode.jsMongoDBQR CodeAnalyticsExcel/PDF Export
Live project
Web PlatformFeatured

BGC HSC Farewell 2026

Farewell registration system with T-shirt size selection, vegetarian/non-vegetarian food preferences, QR-based entry verification and analytics. Built in 5 hours under exam pressure.

My role
Solo developer
Challenge
Rapid turnaround during ongoing admission coaching exams; reusing Olympiad portal components while redesigning the entire platform.
Outcome
Ranked #1 for 'HSC 2026 Farewell' search within 4 hours of indexing. QR verification prevents duplicate food/T-shirt claims; analytics optimize ordering.
ReactNode.jsMongoDBQR CodeSEO
Live project
Robotics

BGCRescue RX48

Advanced smart rescue rover for search and rescue in hazardous environments with real-time control and robust mobility.

My role
Lead builder (team)
Challenge
Reliable sensor fusion and mobility on rough terrain.
Outcome
Scalable design prepared for AI integration.
RoboticsIoTSensorsEmbedded Systems
Robotics

Smart Low-Cost Water Pumping System

Cost-effective water pumping with automatic water-level detection and energy optimization.

My role
Team developer
Challenge
Keeping cost low while automating control logic.
Outcome
Featured in the robotics showcase.
ArduinoIoTSensors
Live project
Robotics

Obstacle Avoiding LFR Dual Mode

Dual-mode line-following robot with obstacle avoidance using IR and ultrasonic sensors.

My role
Team developer
Challenge
Adaptive pathfinding for interrupted tracks.
Outcome
Deployed in robotics competitions.
ArduinoEmbedded CPID Control
Live project
Robotics

Bluetooth RC Car with Camera

Remote-controlled car with live camera feed, emergency stop and mobile app control.

My role
Team developer
Challenge
Low-latency control with live video telemetry.
Outcome
Used for demonstrations and competitions.
ArduinoBluetoothWireless Camera
Live project
Web Platform

Bigganneshi — Science Learning Platform

Science learning platform with Q&A, articles, activities and blogs to foster scientific discussion.

My role
Developer
Challenge
Building community features that encourage participation.
Outcome
Live at bigganneshi.com.
WordPressPHPReactViteTailwind CSS
Live project