Hidayatullah, M., S. Sofyan, P. Ali Topan, T. Andriani, and N. Nurhairunnisah. “Monitoring System of Water Quality on Hydroponic Planting Media Using Total Dissolved Solid (TDS) Sensor Based Arduino Uno R3”. JURNAL ILMU FISIKA | UNIVERSITAS ANDALAS, vol. 14, no. 2, Aug. 2022, pp. 108-15, doi:10.25077/jif.14.2.108-115.2022.