Rancang Bangun Sistem Alat Ukur Kadar pH pada Air Kolam Berbasis Mikrokontroler Arduino

Abstract

measuring instrument for measuring pH levels in pool water has been made. This tool aims to facilitate the work of fish farmers in measuring pH levels in pond water. The sensor used in the manufacture of the pH measuring instrument is a pH sensor which is controlled by the Arduino Nano Microcontroller and is equipped with a display of measurement results on a 16x2 character LCD. The results of testing the pH level measuring instrument from three samples of fish pond water in the container were satisfactory, where with three experiments using a pH sensor, an average of 4.37 was obtained for tilapia, 7.41 carp and 8.46 tilapia. Meanwhile, using a pH meter obtained an average of 4.38 for tilapia, 7.40 carp and 8.61 tilapia. The results of the calculation of the percent error obtained when compared with a pH meter comparison tool are 0.22% tilapia, 0.13% carp and 1.77% tilapia.