The objective of this research is to develop a water quality measurement system for growing hydroponic vegetables. To study the efficiency in measuring the pH value (pH), the electrical conductivity of water (EC), the temperature of the water (Temp), the turbidity of the water (Tur), and the oxygen value in the water (DO). To study the efficiency and accuracy. and the accuracy of data in the cloud system and Line applications to evaluate the performance of the system using a comparison of the differences between the environmental laboratory and the water quality measurement system in 5 values, including pH and alkalinity. (pH), water electrical conductivity (EC), water temperature (Temp), water turbidity (Tur), and water oxygen (DO). In collecting water quality data, the same factors of day, time, and location are controlled. Using a t-test to determine the significance of comparing differences between measurements from environmental laboratories.
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