Soil Hygrometer Humidity Detection Moisture Sensor

NOTE: These sensors are not capacitive sensors and rely on physical interaction with soil and moisture which prevents them from being used for long-term monitoring. This sensor is only suitable as for use with learning!

This is a summary of the soil moisture sensor that can be used to detect moisture, when the soil is dry, the module outputs a high level. Use this sensor to build an automatic watering system.

Specifications

• Operating voltage: 3.3V~5V.
  
• Adjustable sensitivity (blue digital potentiometer adjustment)
  
• Dual output mode, analog output more accurate.
  
• A fixed bolt hole for easy installation.
  
• Power indicator (red) and digital switching output indicator (green).
  
• LM393 comparator chip, stable.
  
• PCB Dimension: 3cm x 1.5cm.
  
• Soil Probe Dimension: 6cm x 2cm.
  
• Cable Length: 21cm.
  

Connections

VCC: 3.3V-5V.
GND: GND.
DO: digital output interface (0 and 1).
AO: analog output interface.

What's in the box?

1 x Soil moisture detector module
1 x Probe
5 x Jumper Cables

Resources

Setup with Raspberry Pi