LM393 3.3V-5V Soil Moisture Detect Sensor Soil Moisture Sensor Soil Hygrometer Detection for Arduino Automatic Watering System Robot Smart car

• This is a simple moisture sensor can be used to detect soil moisture, when the soil water shortage, the module outputs a high level, whereas the output low.
• Use this sensor to make an automatic watering device that will keep your garden of plants unmanaged.
• Module dual output mode, digital output is simple, more accurate analog output.
• Sensitivity adjustable (Figure blue digital potentiometer adjustment)
• Comparator using LM393 chip, stable job

Wiring ( 4 -wire )

• 1VCC external 3.3V-5V
• 2GND External
• 3DO small board digital output interfaces ( 0 and 1 )
• 4AO analog output voltage of small platesInstruction:
  
  • Sensor for detecting moisture in the soil
  • Sodule is the blue potentiometer to adjust the threshold for soil moisture , clockwise adjustment,
  • control humidity will be bigger, smaller counter-clockwise
  • Digital outputs D0 can be directly connected with the microcontroller through the microcontroller to detect high and low , thereby detecting soil moisture
  • Small plates AO analog output modules can be connected and AD through the AD converter , you can get a more accurate value of soil moisture
  • Operating Voltage 3.3V-5V
  • Has a fixed bolt holes for easy installation