Embedded Systems & Automation
RO / closed loop.
A laboratory-scale prototype designed to monitor pH and Total Dissolved Solids levels and control filtration processes based on predefined thresholds.
Hardware
A chain of physical decisions.
Arduino Uno · pH sensor · TDS sensor · relay modules · water pumps · reverse osmosis membrane · alkaline mineral filter · 16×2 I2C LCD · LED indicators · tubing and connectors.
SensepH + TDS readings
↓
DecideThreshold-based control logic
↓
ActuateRelays and pumps drive filtration
Personal contribution
Group project, specific role.
Kim assisted with hardware assembly, integration of pH and TDS sensors with Arduino, system functionality testing, technical troubleshooting, and verification of monitoring and automated filtration operation.
Scope boundary
This is a laboratory-scale prototype, not a certified household drinking-water purification product. No safety certification or invented test results are presented.
Prototype photographs and schematic images are not present in the RO folder yet.