Description
A soil moisture sensor (or meter) measures the water content in soil. With it, you can easily tell when the soil needs more water or when it’s over-watered.
The Soil Moisture Sensor uses capacitance to measure the water content of soil (by measuring the dielectric permittivity of the soil, which is a function of the water content). Simply insert this rugged sensor into the soil to be tested, and the volumetric water content of the soil is reported in percent.
Feature:
1). Adjustable sensitivity by adjusting the digital potentiometer (shown in blue)
2). Operating voltage: 3.3V ~ 5V
3). Dual output mode, analog output more accurate.
4). A fixed bolt hole for easy installation
5). Panel PCB Dimension: 30mm * 16mm
6). Soil Probe Dimension: 60mm * 30mm
7). With power indicator (red) and digital switching output indicator (green)
8). Having LM393 comparator chip, stable
Pin definition
| Pin | Definition |
| VCC | 5V |
| GND | GND |
| DO | Digital output interface (0 and 1) |
| AO | Analog output interface |
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