Connected Systems
BSS (Battery Swap Station) — DRIMAES
Battery Swap Station BATTON consists of four cradles communicating via RS485 with a main Linux system that controls subsystems through an MQTT server and a virtual MQ (Message Queue).
I was in charge of:
- Cradle control via a private RS485 protocol.
- OTA firmware updates with AWS S3.
- Edge networking stations across districts.
- Internal MQ communication.
Leafeon — Personal IoT Project
An ESP32 FreeRTOS-based IoT indoor environment monitor that measures temperature, humidity, eCO2, eTVOC, particulate matter, and (less-accurately) altitude, then logs to a cloud server.
This was an end-to-end personal project. Leafeon includes the ESP32 IoT device, a FastAPI server, a local OTA server, an AWS RDS backend, and a simple dashboard.
EYE-Tuner — CatchVision Workstation
EYE-Tuner is a web-based personalized digital reading-comprehension tool.
Through eye tracking, it identifies the user’s gaze speed and reading habits, displays text at a customized pace, monitors eye fatigue, and saves personalized screen settings.
Achievements
- Minjun Chang, Guiju Choi, Jungyoon Byun, Dongha Kim, “Eye Tuner: Media Literacy Program based on Pupil Tracking,” C-2024-039138.
- IHEI Show Off Festa 2, Best Choice Award, 2021, IHEI Yonsei.
- MEDICAL HACK 2021, Excellence Prize, 2021, Busan City.
- Yonsei IHEI Workstation, Impact Solution Award, 2021, IHEI Yonsei.