Soil Moisture Sensor Module

This is a summary of the soil moisture sensor can be used to detect moisture, when the soil is dry, the module outputs a high level, whereas output low. Using this sensor make an automatic watering system, so that your garden plants without people to manage.

Specifications:

• Operating voltage: 3.3V~5V.
• DO: Digital output interface(0 and 1).
• AO: Analog output interface.
• Adjustment: shown in blue potentiometer.
• Dual output mode,analog output more accurate.
• Fixing: 2 hole for easy installation.
• Indicator: Switching output indicator green.
• Using IC: LM393 comparator chip.

Dimensions:

• Panel PCB Dimension: 3cm x 1.5cm.
• Soil Probe Dimension: 6cm x 2cm.
• Cable Length: 21cm.

Instructions:

• 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.