Persistent Water Quality Issues in Schools Across the country, elementary, middle, and high schools continue to face recurring problems of rusty and turbid water, raising serious concerns among students and parents. At one elementary school in Seoul, rusty water was found in drinking fountains due to aging pipelines, forcing students to bring bottled water from home or teachers to install temporary purifiers (Chosun Ilbo, May 13, 2024). In Gyeonggi Province, turbidity levels

By developing an ASIC (Application-Specific Integrated Circuit)  that integrates the CMOS camera and MCU —the core components of conventional water quality sensors— THE WAVE TALK  has achieved an unprecedented level of miniaturization. This semiconductor-level integration not only reduces the overall sensor footprint but also enhances stability, signal processing efficiency, and production scalability. In parallel, we designed a custom laser drive circuit  and a miniaturized

Turbidity: The Core Indicator of Water Quality Turbidity—the cloudiness caused by fine particles or impurities suspended in water—is one...