This project demonstrates how to measure the pH level of a solution using a pH sensor interfaced with Arduino. The sensor outputs a voltage corresponding to the acidity or alkalinity of the solution, which Arduino reads, processes, and converts into a pH value. This project teaches sensor interfacing, analog signal reading, calibration techniques, and real-time data processing in a simulated environment. 1. Learn how to interface a pH sensor with Arduino. 2. Understand the conversion of sensor voltage output into meaningful pH values. 3. Explore programming techniques for calibration, data reading, and processing. 4. Gain practical experience in designing chemical measurement and monitoring systems.