Projects grouped by what they're about — badges show maturity (Live · Beta · Concept).
My Study Know-hows — a platform about how to study itself: evidence-based study methods, elementary Korean/math/science/social studies, English (PTE) and German (A1–C1) tracks with speech trainers, and coding.
Essential Guitar Chords — 218 searchable voicings across open chords, open-tension forms, alternate tunings, jazz drop-2/drop-3, and electric triads. Every diagram plays, labels its notes, and works offline.
A picture-book reader with narration, built from a pipeline that turns pptx/ppt/pdf/image sources into a browsable book view. Made for my own kids' early reading, and in daily use.
Interactive beginner's guide to worship drumming — bilingual (EN/KR), every pattern an audible looping GrooveGrid with a tempo trainer. Crash course first, then the fundamentals that earn it.
Guitar Builder — shape a build (TARGET) against a reference instrument (BASE) on the same ~110 parameters, hear the physics-simulated tone delta, and export real CAD. Pickups are modelled per instrument and by type (single/humbucker/P-90/piezo/mic) — a piezo or mic puts the soundboard itself in the loop. No modes: a 34" scale is a bass. (Merged TACO + PASTA.)
Sound Designs — analyze, design, and verify a sound in one loop. One graph workspace: a pedal chain you build, a full analyzer on whatever feeds it, and a render that gets audited and re-analyzed. (Merged SOUP + CAKE.)
Nurse shift scheduler built on a CP-SAT constraint solver — monthly rotas for multi-role wards, nurse shift requests, realtime updates, staff invites, and per-nurse calendar (ICS) export.
Computes what a perturbation does to a body, organ by organ, from cited mechanism — and refuses, by name, whatever it cannot compute. One shared PBPK field, contrasts instead of uncalibrated magnitudes, a 59,161,677-coupling corpus underneath, and the regulatory/simulation stack (RAPL retrieval, CTAP dossier generation, three worked dossiers) on top.
Pharm Info Explorer — identify pills by imprint/shape/color from a photo or live camera, count them, and manage a medicine cabinet with duplicate-ingredient (DUR) checking. Classical CV only, and it never fabricates a result.
A medical-device feasibility study for real-time IV insertion navigation in DIVA patients: a rule-based CV prototype that fell short of reliable localization, plus the MFDS productization dossier and medical-device RA study built around it.
WorshipFlow — run a worship service end to end: an 867-song library with versions, song forms and YouTube references, setlist (콘티) building, and a score viewer that follows the setlist order on stage.
An honest data-science study of the Korean lottery: a 9-stage curriculum (probability → testing → Bayesian → ML → unsupervised → backtest) whose conclusion is that no usable signal exists. Not a prediction tool — a proof of why prediction fails.
A local-first AI orchestrator built to get real work out of cheap open-weight models. Its generalist tiers resolve to Llama 3.1 8B and 70B, so the engineering budget goes into keyword-first routing that spends almost no tokens, typed task decomposition with a halt-on-unverified guardrail, lexical-first retrieval that carries citations, and a UI that makes the cost of every decision visible.
A closed-loop optimizer over housing. Knowledge-acquisition and design-mutation actions compete in one priority queue under one currency — expected decision-improvement per cost. The loop is the product; solvers, adapters and UI are plug-ins.
A knowledge base for running a Korean social cooperative — official-source tracking with change detection, lifecycle checklists, hybrid keyword + vector search, and AI drafts restricted to approved evidence (opt-in per document).