Alat Ukur Kelembaban Tanah Menggunakan Sensor YL-69 Berbasis Android Phone

Abstract

This paper presents the design and realization of aArduino Uno. Two probe of type YL-69 for soil moisture sensor. This soil moisture sensor is connected to signal generator. When the soil moisture changes, then the impedance of sensor will change. This the frequency of output signal generator changes according to the soil moisture. This frequency change is then detected and used for knowing the soil moisture level. A tool created is also equipped with HC-05,so the results can be displayed and read on handphone.