In this tutorial, we will walk through the process of interfacing a pH sensor with an Arduino UNO in Proteus. To make the project more practical and user-friendly, an LCD is included so that both the sensor’s voltage output and the calculated pH value can be displayed clearly in real time. This allows the user to easily monitor the readings without needing additional software or serial monitoring tools.
The term pH, short for “potential of Hydrogen,” indicates the concentration of hydrogen ions (H⁺) in a solution and is used to determine whether it is acidic, neutral, or alkaline. A pH of 7 represents neutrality, values below 7 indicate acidity, and values above 7 represent alkalinity. Monitoring pH is essential in several fields—such as water quality testing, agriculture, food processing ...
