This sensor helps us to measure the humidity in the earth, in pots, greenhouses, etc.
In this way, it can help us monitor whether the soil of a plant is wet or dry enough, which would allow us to keep it in an optimal state for its growth.
Soil Moisture Sensor
Working voltage: from 3.3 - 5V
It has an adjustable digital and an analog output for more accurate measurements.
Power indicator (red LED)
Digital output indication (green LED)
It has 4 connection pins:
VCC: The supply voltage is connected to this pin
GND: The circuit ground must be connected here
DO: Adjustable digital output with the included potentiometer
AO: Analog output for more precise measurements