Soil Moisture Sensor

Interface Description

• VCC: 3.3V–5V

• GND: Ground

• DO: Digital output interface (0 and 1)

• AO: Analog output interface

Instructions for Use

• The soil moisture module is most sensitive to ambient humidity and is generally used to detect the moisture content of soil.

• The digital output (D0) can be directly connected to a microcontroller to detect high and low signals, allowing the microcontroller to determine soil humidity.

• The digital output DO can also directly drive a relay or buzzer module, forming a soil moisture alarm device.

• The analog output (AO), when connected to an AD converter module, can provide more precise soil moisture values.