Andreas Restuawanta Christwara

Computer Engineering • Audio Signal Processing • Stage Lighting Systems • Cloud Architecture

Undergraduate researcher and software engineer crafting cross-modal audio-reactive lighting consoles, real-time multimedia broadcast pipelines, and high-performance serverless cloud architectures.

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🎓 Academic Research & Thesis

• Candidate: Andreas Restuawanta Christwara (NIM: 5312422036)
• Advisor: Mario Norman Syah, S.Pd., M.Eng. (NIP: 199304212024061001)
• Department: Program Studi S1 Teknik Komputer, Jurusan Teknik Elektro, Fakultas Teknik, Universitas Negeri Semarang (UNNES)
• Thesis Title:

  "Rancang Bangun Sistem Audio-Reactive Lighting Design Berbasis Analisis Mood Lagu Rohani dengan Pemetaan Warna HSV-RGBW dan Protokol Art-Net DMX512"

• Field Deployments: Gereja Isa Almasih (GIA) Deliksari & Auditorium UNNES.

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🚀 Flagship Engineering Projects

🎛️ ZZLUXORA v10 Next-Gen Production Stage Lighting Console inspired by grandMA3 industrial ergonomics and QLC+ utility. Powered by pure Python/NumPy STFT (43.07 FPS), Russell 2D Affective Plane mood mapping, physical 4-channel RGBW decomposition, and play-gated Art-Net UDP transmission. Python 3.10+ • PySide6 (Qt6) • NumPy • Art-Net 4 • DMX512	📜 Thesis & Research Lab Scientific research manuscript repository conforming to IEEE standards. Features Cooley-Tukey Radix-2 FFT derivations, Hann windowing spectral leak mitigation, 8 publication-grade diagrams, and dual-core FreeRTOS ESP32 firmware. Academic Research • DSP Mathematics • ESP32 C++ • FreeRTOS
🏛️ GIA Deliksari Web Portal Production church operational portal and public community platform. Engineered with modern serverless architecture on Cloudflare D1 (SQLite at the edge), R2 asset storage, and OpenNext integration. Next.js 15 • React 19 • TypeScript • Cloudflare D1/R2	📻 Suara Fajar Deliksari Interactive morning prayer radio and community audio broadcasting platform. Real-time low-latency audio delivery powered by LiveKit WebRTC and Supabase real-time presence. Next.js 14 • LiveKit WebRTC • Supabase • Tailwind CSS
⚡ Kilat Mail Blazing-fast serverless temporary email service featuring automated Smart OTP extraction, Cloudflare Email Routing workers, and instant edge storage on Cloudflare D1. Cloudflare Workers • D1 Database • React • Vite	🎨 Erase Drop 100% in-browser AI image background remover. Zero server upload, unlimited usage, and local client-side WebGPU acceleration with built-in official photo color backdrop generator. WebGPU • Transformers.js • React • TypeScript
🍲 Ciremai Cashier & POS Proprietary point-of-sale cashier system, interactive dining order workflow, 80mm thermal receipt printing, and daily revenue reporting engine for RM Ciremai Kuningan. HTML5 / SPA • Local-First • Thermal Print • Financial POS	💡 zz-fixture Profiles Custom QLC+ fixture definition library (.qxf) for Alien AL36 (36-LED RGB) stage wash and Kumastb STL47 (12-LED RGBW) bench-testing fixtures. QLC+ • DMX512 • XML / .qxf • Stage Fixtures

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🛠️ Technical Stack & Specializations

Audio & DSP        • STFT, FFT (Cooley-Tukey DIT), Hann Windowing, MIR (RMS, Centroid, Chroma, MFCC, Flux)
Affective Compute  • Russell Circumplex Model 2D (Valence-Arousal), Cross-Modal Color Mapping (HSV-RGBW)
Stage & Lighting   • Art-Net 4, DMX512-A, QLC+ Profiles (zz-fixture), grandMA2/3 onPC
Hardware & IoT     • ESP32 Dual-Core (Tensilica LX6), FreeRTOS SMP, MAX485, I2C, Arduino C++
Languages          • Python, TypeScript, JavaScript, C++, C, SQL, HTML5 / CSS3
Frontend / UI      • PySide6 (Qt6), Next.js, React, Tailwind CSS, Vite, Three.js
Cloud & Serverless • Cloudflare (Workers, D1, R2, Pages), Supabase, WebRTC (LiveKit), Vercel
Dev Environment    • Windows 11, Claude Code CLI, Git / GitHub CLI

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📊 GitHub Activity

_{Designed with precision & craftsmanship • Built for production}