YOLO-Based QRIS Detection and Validation System (EMVCo Standard)
End-to-end pipeline for detecting and validating QRIS, Indonesia's QR payment standard. A fine-tuned YOLO model localizes a dozen-plus QR codes per photo (0.90 mAP50-95 on the test set, ~600 ms per 4K image); each payload is then decoded (OpenCV + zxing-cpp) and validated offline as an EMVCo TLV structure — CRC-16, NMID, MCC, static/dynamic checks. Caught a real spec-violating QRIS in the wild. Ships with a FastAPI web app, realtime webcam mode, and a CLI.
Python/YOLO (Ultralytics)/PyTorch (MPS)
Index 02Live Build
Hello World Interview
An interview management system for volunteers and OCs in the Hello World program. Replaces the spreadsheet workflow: admins manage participants, divisions, and questions; interviewers fill out and score interviews per division; admins review and finalize with Excel/PDF report exports.
Next.js/TypeScript/Tailwind CSS
Index 03Live Build
ratrifaStudio
ratrifaStudio is a dynamic portfolio website with a CMS admin panel for managing projects and experiences.
Next.js
Index 04Case File
ClipperOS
ClipperOS is a web-based barbershop management app that handles end-to-end daily operations: customer booking, barber and schedule management, POS/transactions, services and inventory, promotions, and business reports in one integrated dashboard for admins, barbers, and customers.
Next.js/Laravel/TypeScript
Index 05Case File
zipher
An end-to-end encrypted (E2EE) file storage app. Files are encrypted client-side before being sent to the server, so only the owner can read them. Available on web and mobile (Android/iOS).
Next.js/TypeScript/Tailwind CSS
Index 06Live Build
KeyBarber
An AI-powered barbershop management app with facial morphology analysis. The system recommends hairstyles based on the customer's facial anatomy, with booking, POS, Telegram monitoring, and Google OAuth.
Next.js/Node.js/Express.js
Index 07Case File
SipDanaV3
A modern financial management platform with real-time tracking, smart visualizations, and financial strategy recommendations to keep your cash flow healthy and measurable.
Tailwind CSS/React/Node.js
Index 08Live Build
Ceritaku
A modern storytelling platform for sharing short stories with the community. Features likes, bookmarks, nested comments, follow between authors, reading lists, and story category tags.
