Grow-C - MAN 1 Kota Kediri | Akademi Madrasah Digital (AMD) 2021

Introduction

This tutorial outlines how to implement the Grow-C IoT solution developed by MAN 1 Kota Kediri, designed to assist farmers in monitoring and maintaining optimal soil moisture and air temperature using real-time sensor technology. By following these steps, you will learn how to set up a system that allows for efficient remote monitoring and automated irrigation, ultimately improving agricultural productivity.

Step 1: Understand the System Components

Familiarize yourself with the key components of the Grow-C system:

• Sensors:

  • DHT22: Measures air temperature and humidity.
  • Soil Moisture Sensor: Monitors the moisture level in the soil.

• Pumps:

  • Pump 1: Activates to irrigate the soil when moisture is low.
  • Pump 2: Activates to cool the air when temperature is too high.

Step 2: Setting Up the DHT22 Sensor

To monitor air temperature, follow these steps:

1. Connect the DHT22 Sensor:

   • Wire the DHT22 to your microcontroller (e.g., Arduino).
   • Ensure you connect the power (VCC), ground (GND), and data pin correctly.

2. Install the Required Library:

   • If you are using Arduino, install the DHT library from the Arduino Library Manager.

3. Write the Code:

   • Use the following code snippet to read data from the DHT22 sensor:

   #include "DHT.h"
   
   #define DHTPIN 2     // Pin where the DHT sensor is connected
   #define DHTTYPE DHT22   // DHT 22 (AM2302)
   
   DHT dht(DHTPIN, DHTTYPE);
   
   void setup() {
       Serial.begin(9600);
       dht.begin();
   }
   
   void loop() {
       float h = dht.readHumidity();
       float t = dht.readTemperature();
       if (isnan(h) || isnan(t)) {
           Serial.println("Failed to read from DHT sensor!");
           return;
       }
       Serial.print("Humidity: ");
       Serial.print(h);
       Serial.print(" %\t");
       Serial.print("Temperature: ");
       Serial.print(t);
       Serial.println(" *C");
       delay(2000);
   }
   

Step 3: Setting Up the Soil Moisture Sensor

Follow these steps to monitor soil moisture:

1. Connect the Soil Moisture Sensor:

   • Wire the sensor to the microcontroller, connecting power, ground, and the signal pin.

2. Write the Code:

   • Integrate this code snippet to read the moisture level:

   int moisturePin = A0; // Analog pin for soil moisture sensor
   
   void setup() {
       Serial.begin(9600);
   }
   
   void loop() {
       int moistureLevel = analogRead(moisturePin);
       Serial.print("Soil Moisture Level: ");
       Serial.println(moistureLevel);
       delay(2000);
   }
   

Step 4: Automating the Pump Control

To automate the irrigation process based on sensor readings:

1. Define Pump Control Logic:

   • If soil moisture is below a certain threshold, activate Pump 1.
   • If air temperature exceeds a threshold, activate Pump 2.

2. Implement the Control Logic:

   • Extend your code to include pump control:

   int pump1Pin = 3; // Pump 1 control pin
   int pump2Pin = 4; // Pump 2 control pin
   
   void setup() {
       pinMode(pump1Pin, OUTPUT);
       pinMode(pump2Pin, OUTPUT);
       // Other setup code...
   }
   
   void loop() {
       // Read sensor values...
       if (moistureLevel < threshold) {
           digitalWrite(pump1Pin, HIGH); // Activate Pump 1
       } else {
           digitalWrite(pump1Pin, LOW); // Deactivate Pump 1
       }
   
       if (temperature > threshold) {
           digitalWrite(pump2Pin, HIGH); // Activate Pump 2
       } else {
           digitalWrite(pump2Pin, LOW); // Deactivate Pump 2
       }
       // Other loop code...
   }
   

Conclusion

By following these steps, you can set up the Grow-C IoT system to effectively monitor soil moisture and air temperature, automating the irrigation process for farmers. This system enhances efficiency and provides a means for remote monitoring, making agricultural practices more sustainable. For further development, consider integrating a mobile app for notifications or remote control of the pumps.