Revise paste Irrigation Controller rev_01

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- Project: Irrigation Controller
	- Source Code NOT compiled for: Arduino Uno
	- Source Code created on: 2025-11-23 12:09:35

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/****** SYSTEM REQUIREMENTS *****/
/****** SYSTEM REQUIREMENT 1 *****/
	/* the pump should on when the soil is dry */
/****** END SYSTEM REQUIREMENTS *****/

/* START CODE */

#include <Relay.h>
#include <RelayModule.h>

// Define relay and sensor pins
const int relayPin = 8; // Digital pin for relay control
const int sensorPin = A0; // Analog pin for soil moisture sensor

// Variable to hold sensor reading
int soilMoistureValue;

// Moisture threshold below which the pump should turn on
const int moistureThreshold = 20; // System Requirement 1

// Initialize relay object
RelayModule relay(relayPin);

// Setup function
void setup() {
  Serial.begin(9600); // Initialize serial communication
  pinMode(relayPin, OUTPUT); // Set relay pin as output
  pinMode(sensorPin, INPUT); // Set sensor pin as input
  relay.begin(); // Initialize relay
  Serial.println("Reading From the Sensor ...");
  delay(2000);
}

// Loop function
void loop() {
  // Read soil moisture sensor
  soilMoistureValue = analogRead(sensorPin);
  // Map sensor value to percentage
  soilMoistureValue = map(soilMoistureValue, 550, 10, 0, 100);
  Serial.print("Moisture : ");
  Serial.print(soilMoistureValue);
  Serial.println("%");

// Check moisture level and control relay
  if (soilMoistureValue < moistureThreshold) {
    relay.off(); // Turn pump ON when soil is dry
  } else {
    relay.on(); // Turn pump OFF when soil is moist enough
  }
  delay(1000); // Wait for 1 second
}

/* END CODE */