FC-28 Soil Hygrometer (Moisture) Sensor

Description: The FC28 Soil Moisture Sensor is a simple breakout for measuring the moisture in soil and similar materials. The soil moisture sensor is pretty straight forward to use. The two large exposed pads function as probes for the sensor, together acting as a variable resistor. The more water that is in the soil means the better the conductivity between the pads will be and will result in a lower resistance, and a higher SIG out. To get the FC28 Soil Moisture Sensor functioning all you will need is to connect the VCC and GND pins to your Microcontroller based device and you will receive a SIG out which will depend on the amount of water in the soil. One commonly known issue with soil moisture sensors is their short lifespan when exposed to a moist environment.

This is a simple water sensor, can be used to detect soil moisture
Module Output is high level when the soil moisture deficit, or output is low
Can be used in module plant watering device, and the plants in your garden no need people to manage

Interface Description (4-wire):
VCC: 3.3V-5V
GND: GND
DO: digital output interface (0 and 1)
AO: analog output interface

Instructions for Use:
Soil moisture module is most sensitive to the ambient humidity is generally used to detect the moisture content of the soil
Module to reach the threshold value is set in the soil moisture, DO port output high, when the the soil humidity exceeds a set threshold value, the module D0 output low
The digital output D0 can be connected directly with the microcontroller to detect high and low by the microcontroller to detect soil moisture
The digital outputs DO shop relay module can directly drive the buzzer module, which can form a soil moisture alarm equipment
Analog output AO and AD module connected through the AD converter, you can get more precise values of soil moisture