Introduction

This experiment demonstrates how to monitor the fertility of soil using sensors for pH, moisture, and temperature.

Components Needed

• Soil pH Sensor
• Soil Moisture Sensor
• Temperature Sensor
• Arduino
• Jumper Wires

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Circuit Setup

1. Connect the soil sensors to the Arduino to measure soil fertility parameters.

Code for Soil Fertility Monitoring

Upload the following code to your Arduino to monitor soil conditions:

#include 

#define DHTPIN 2
#define DHTTYPE DHT11
DHT dht(DHTPIN, DHTTYPE);

int pHValue;
int moistureValue;

void setup() {
  Serial.begin(9600);
  dht.begin();
}

void loop() {
  pHValue = analogRead(A0);  // Soil pH sensor
  moistureValue = analogRead(A1);  // Soil moisture sensor

  float temp = dht.readTemperature();
  float humidity = dht.readHumidity();

  Serial.print("pH Level: ");
  Serial.println(pHValue);
  Serial.print("Soil Moisture: ");
  Serial.println(moistureValue);
  Serial.print("Temperature: ");
  Serial.println(temp);
  Serial.print("Humidity: ");
  Serial.println(humidity);

  delay(2000);
}
            

Explanation

The system reads the soil pH, moisture, and temperature to assess soil fertility. Data is sent to the Serial Monitor for analysis.

Troubleshooting

• If the readings are incorrect, check the wiring of the sensors and calibrate them properly.
• If the sensor values do not change, verify the sensors are properly embedded in the soil.