Dardan Fejza

Self-hosted AI companion that runs entirely on owned hardware — a Python/FastAPI backend with an in-house agent loop calling a local open-weight model (Qwen3, a ~35B / ~3B-active MoE) served on vLLM, so inference is 100% local with no cloud LLM and no per-token billing. Every conversation is stored locally on self-hosted infrastructure, building a persistent, private knowledge base that commercial chat tools don't keep. Reachable over WhatsApp (Meta Cloud API webhooks) and a web UI, with voice-note transcription via Deepgram and a self-hosted Whisper sidecar deployed as the swap-ready local path. Zero-trust networking via Cloudflare Tunnel + Tailscale, a fail-closed permission ceiling on every action, and a health-gated deploy pipeline that keeps production on a known-good build.

Japanese radio streaming with real-time AI transcription. A faster-whisper pipeline continuously transcribes live broadcasts, MeCab adds furigana readings, and the frontend renders word-level karaoke highlighting synced to playback. Also features HLS streaming, station search, favorites, regional grouping, and RadiKo authentication for premium streams.

Monte Carlo financial simulator for expats weighing stay-or-quit decisions. Compare 7 scenarios side-by-side (work, quit, part-time, Coast FIRE, geo-arbitrage) or model a full life timeline across phases. Features break-even analysis, probability of ruin tracking, and a Die With Zero calculator.

Cost-of-living calculator covering 10 countries across Asia and the Middle East. Five lifestyle tiers from lean to comfortable, with per-city breakdowns for housing, food, transport, healthcare, government costs, and visa fees. Data sourced from primary research and auto-generated via a YAML pipeline.

A spaced-repetition quiz for learning Japan's geography — all 47 prefectures and the 23 wards of Tokyo. Answer on an interactive map and every correct guess leaves a visual trace, turning the map into a personal record of what you've mastered. Adaptive review surfaces your weak spots first.

Four piano skill games designed to make daily practice addictive. Follows the 'Typing of the Dead' model — piano skills are the core game mechanics, not a layer on top. Visual note reading, finger independence drills, bass pattern rhythm, and chord QTEs, all collecting granular performance data to surface weak spots and track progress over time.

ESP32-S3 WiFi audio streaming device that captures speech from dual stereo microphones and streams it over the network to a Python asyncio UDP server, which hands it off to the MrHuang backend. The embedded voice-ingress front end for MrHuang — the hardware counterpart to the desktop mic daemon, both built to feed the same self-hosted speech-to-text layer.

Hardware modification on a Seeed Studio XIAO RP2040: the microcontroller wires directly to a mouse's switch contacts and emits clicks at randomised intervals — exploring USB HID timing, hardware-level event injection, and CircuitPython on RP2040.