Soil Moisture Detection

This sensor is great for making water gardening projects, water sensing, etc.

Specifications:-

• Operating voltage: 3.3V~5V
• Dual output mode,analog output more accurate
• A fixed bolt hole for easy installation
• With power indicator (red) and digital switching output indicator (green)
• Having LM393 comparator chip, stable
• Panel PCB Dimension: Approx.3cm x 1.5cm
• Soil Probe Dimension: Approx. 6cm x 3cm
• Cable Length: Approx.21cm
• VCC: 3.3V-5V
• GND: GND
• DO: digital output interface(0 and 1)
• AO: analog output interface

Connections:-

• VCC  connect to 3.3V-5V
• GND  connect to GND
• DO   digital value output connector（0 or 1）
• AO  analog value output connector

Usage:-

• Soil moisture module is most sensitive to the ambient, generally used to detect the moisture content of the soil.
• When the module can not reach the threshold value, DO port output high, when the the soil humidity exceeds a set threshold value, the module D0 output low;
• The small board digital output D0 can be connected directly to the MCU, MCU to detect high and low, to detect soil moisture;
• Small board digital output DO can directly drive the buzzer module or relay module in our store, which can form a soil moisture alarm equipment;
• Small board analog output AO and AD module connected through the AD converter, you can get more precise values ​​of soil moisture;