heuijee.yun CV
HOME LAB · OFF THE RECORD · EYES ONLY

Gadgets_

Three devices from my home lab. Designed, PCB'd, printed, and shipped by one person. Hover the classified bits to declassify.

001

Egg

VOICE-CLONED TTS COMPANION · FOR MOM

● DEPLOYED — MOM'S ROOM
3D — DRAG TO ROTATE
tap the egg or the button

FIG.1 — PRODUCT · 3D-PRINTED ENCLOSURE

BOARD VIEWER

FIG.2 — MAINBOARD EGG-01 REV.B · DESIGNED FROM SCRATCH

The field unit speaks with my own cloned voice — the browser demo falls back to your system's Korean TTS. The board viewer walks through the actual PCB stackup I designed: copper, silkscreen, and drill.

Mission
Daily check-ins, medication reminders, and greetings for one very important person
Voice
TTS model fine-tuned on recordings of my own voice, fully offline
Mainboard
Custom PCB — audio amp, battery charging, touch sensing
Enclosure
3D-printed egg shell, weighted to sit in one hand
Compute
Embedded Linux board
Connectivity
Local network only — no cloud, ever
Battery
Li-Po with charging base dock
Status
Deployed & loved ♥
002

Mini AI

SELF-HOSTED PERSONAL ASSISTANT · 24/7

● OPERATIONAL
SECURE TERMINAL

FIG.1 — LIVE RECREATION · LOCAL LLM INFERENCE

Mission
Household intelligence — answers, memory, voice — with zero packets leaving the house
Model
Quantized local LLMs, tuned to fit small silicon
Privacy
Air-gapped inference · no API keys · cloud calls: 0
Network
Serves the household — including EGG-01 — over LAN
003

Clearsight

AR SPY GLASSES · THROUGH-WALL HOLOGRAM · REMOTE · CONCEPT

◌ IN PLANNING

The goal: look at a wall through the glasses and see a holographic reconstruction of the person on the other side. Sensing is split by distance — mmWave radar (near), WiFi CSI (far), RF scan (ambient) — fused into a body pose that's drawn as a hologram on the lens. A handheld remote switches the view between full hologram, skeleton, and an x-ray build-up scan.

L1 · mmWave RADARnear range — presence & motion L2 · WiFi SENSING (CSI)far range — through-wall silhouettes L3 · RF SCAN (SDR)ambient — devices & signals nearby
FUSIONphone / PC · merge by confidence × distance
BLE ▶
GLASSES HUDFrame / Halo · holographic overlay
AR GLASSES VIEW — THROUGH-WALL HOLOGRAM

FIG.1 — WHAT YOU SEE THROUGH THE GLASSES · A HOLOGRAPHIC PERSON BEHIND THE WALL, SWITCHED BY THE ON-SCREEN REMOTE

L1 · Near
mmWave radar (ESP32-fed) — presence & micro-motion within a few meters
L2 · Far
WiFi CSI sensing — coarse through-wall silhouettes at longer range
L3 · Ambient
SDR RF scan — nearby devices, BLE beacons, 2.4 GHz activity
Fusion
Phone / PC merges layers into a body pose & distance estimate
Hologram
Pose rendered as a translucent through-wall figure on the lens
Remote
Handheld BLE remote cycles HOLO / SKELETON / X-RAY scan
Display
Brilliant Labs Frame / Halo — open SDK, HUD drawn directly
Status
Concept & feasibility — sensors, fusion logic, long parts wishlist
ETA
when the grant money appears