ARDUINO-BASED REAL-TIME MONITORING SYSTEM FOR WATER HARDNESS AND PH.

In the current era of industrial development, the effective use of water resources and control of their quality are urgent tasks. In this study, an automatic system based on an Arduino microcontroller was developed that monitors water hardness and pH levels in real time during the chemical treatment of industrial water. The goal is to optimize the rational use of resources while reducing human error. The hardware part of the system consists of components such as sensors, a microcontroller, and a real-time display module, while the software part is written in the Arduino IDE environment. Initially, prototype tests were conducted using Fritzing simulation and laboratory conditions. The results show that the developed system can accurately record changes in water hardness and pH: the difference between the measured pH values and laboratory values did not exceed ±0.2, and the results for TDS (total dissolved solids) were observed within 5% of the reference values. This accuracy allows for better control and management of the water treatment process. The proposed system contributes to the sustainable use of water in industry through automated control based on real-time data.