Cutting Fluid pH Value Maintenance in CNC Machine by Arduino NanoOmprakas M A, Manikandan M, Balakrishnan S, Pavithran S, Sasikaran S, Venugopal S and Vishnuprasath LE3S Web of Conf., 529 (2024) 04002DOI: https://doi.org/10.1051/e3sconf/202452904002