Download full-text PDF Read full-text. ... Keywords — soil moisture measurement, Arduino UNO, ... The FC-28 soil moisture sensor was also validated conducting (60) sixty trials with different ...
6. Making a Soil Moisture Sensor The hardware consists of an Arduino® microcontroller (here a Velleman VMA100 Arduino® Uno) and the soil moisture sensor module. The soil moisture sensor module, built around the LM393 comparator (not included), gives an active-low (L) level output when the soil is dry (determined by a pre-set threshold value).