SOIL MOISTURE SENSOR USING ARDUINO WITH CONNECTION AND CODE Soil moisture sensor is the sensing element which determine the volumetric amount of water in the soil .The sensor sense the amount of water by passing an minute voltage at its terminal .Then when the water presence is detected it send an minute voltage to the amplifying circuit and it is further amplified and send to the Arduino. Components Required: 1) Arduino 2) Soil Moisture sensor 3) Led 4) Connecting wires...