Projects

Selected personal engineering, AI, and research-oriented projects.

Personal Voice Keyboard

A private AI dictation tool for Windows and Android. It records speech, routes audio through a secure serverless proxy, transcribes and cleans up the text with OpenAI models, and copies paste-ready output to the clipboard.

Type: Personal AI Tool / Completed Personal Tool
Focus: Korean-English mixed dictation, technical terminology preservation, clipboard-first UX, and secure API key isolation.

Before the AI Era: Field-Tested Foundations

Field-tested foundations of how I build: seeing a real problem, building the missing system, and iterating until it works.

A lot of my engineering work starts the same way: I see a real-world bottleneck, sketch the system that could remove it, build the missing pieces, and keep fixing the messy parts until the system works.

Physical Systems and Wireless Measurement

Robotics, automated Wi-Fi CSI measurement, drone-based aerial connectivity experiments, and motorized antenna systems built to answer questions that clean models alone could not.

Type: Physical Systems / Wireless Measurement / Research Platforms
Focus: robotics and embedded prototyping, automated antenna positioning, custom measurement tools, drone-mounted smartphones, RF experiment setup, motor control, shielding, and field-tested data collection.