The soil moisture sensor module , built around the LM393 comparator ... is applied to D2 input of the Arduino. Analog output (marked as AO) from the module is not used here. Sensor-head of the module ...

What happens when an engineer builds a smart garden? This Arduino-powered system automates watering while collecting ...

Arduino soil moisture sensors are easy to use ... on a finger to reliably read the pulse of a human, providing an analog output that is easy to work with and read. This is great for anyone ...