Soil Moisture Hygrometer Detection Humidity Sensor Module


৳ 140.00

The soil moisture sensor consists of two probes which are used to measure the volumetric content of water. The two probes allow the current to pass through the soil and then it gets the resistance value to measure the moisture value.

When there is more water, the soil will conduct more electricity which means that there will be less resistance. Therefore, the moisture level will be higher. Dry soil conducts electricity poorly, so when there will be less water, then the soil will conduct less electricity which means that there will be more resistance. Therefore, the moisture level will be lower.

This sensor can be connected in two modes; Analog mode and digital mode. First, we will connect it in Analog mode and then we will use it in Digital mode.

  • Operating Voltage 3.3V-5V
  • adjustable sensitivity
  • with fixed bolt hole for easy installation
  • small PCB board size : 3cm * 1.6cm
  • using LM393 comparator chip , stable

The soil Moisture sensor FC-28 has four pins

  • VCC: For power
  • A0: Analog output
  • D0: Digital output
  • GND: Ground

The Module also contains a potentiometer which will set the threshold value and then this threshold value will be compared by the LM393 comparator. The output LED will light up and down according to this threshold value.

Package included:

  • Soil Moisture Hygrometer Detection Humidity Sensor
  • Probes

Diagram

Interface Soil Moisture Sensor and Arduino

Sample code

int sensor_pin = A0;

int output_value ;

void setup() {

   Serial.begin(9600);

   Serial.println("Reading From the Sensor ...");

   delay(2000);

   }

void loop() {

   output_value= analogRead(sensor_pin);

   output_value = map(output_value,550,0,0,100);

   Serial.print("Mositure : ");

   Serial.print(output_value);

   Serial.println("%");

   delay(1000);

   }

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