moisture sensor
FC-28 Soil Moisture Detection Module
The FC-28 soil moisture detection module is a simple breakout board used for measuring the moisture content in soil and similar materials. The soil moisture sensor is very easy to use. Its two large, exposed pads function as probes, which together act as a variable resistor. The more moisture there is in the soil, the better the conductivity between the pads, resulting in lower resistance and higher output current.
