Background
Accurate pH measurement is vital in diverse settings such as water quality assessment, food production, and laboratory procedures. This study introduces a pH meter design utilizing the Arduino platform, a cost-effective and user-friendly open-source electronic platform.
Objective
To develop and test an Arduino-powered pH meter that displays a solution’s pH accurately on a liquid crystal display (LCD).
Methods
The design is based on a pH sensor, which measures the pH by detecting voltage differences between reference and pH electrodes. These values are then shown on an LCD managed by the Arduino board. Calibration and verification of the device’s accuracy were conducted using buffer solutions with known pH values.
Results
The Arduino-centric pH meter proved to be both practical and reliable, with a maximum inaccuracy of only 0.1 pH. It provided accurate readings within the pH range of 4
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