Fish Pond Monitoring System

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    - Project: Pond_monitoring
    - Source Code compiled for: Arduino Uno
    - Source Code created on: 2024-01-04 10:30:56

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/****** SYSTEM REQUIREMENTS *****/
/****** SYSTEM REQUIREMENT 1 *****/
    /* Ultrasonic sensor measure distance. If distance is */
    /* greater than 30cm print distance and print */
    /* underflow turn on red led turn on servo */
/****** SYSTEM REQUIREMENT 2 *****/
    /* Ultrasonic sensor measures distance if distance */
    /* less than 15cm print distance print overflow turn */
    /* red led on turn servo on */
/****** SYSTEM REQUIREMENT 3 *****/
    /* Servo motor turns 180 degrees when on */
/****** SYSTEM REQUIREMENT 4 *****/
    /* ultrasonic sensor if distance is between 16 and 29 */
    /* print distance print optimum level turn on green */
    /* led. */
/****** SYSTEM REQUIREMENT 5 *****/
    /* all readings and actions from the DHT to be */
    /* recorded and carried out in a function called */
    /* water_temp */
/****** SYSTEM REQUIREMENT 6 *****/
    /* all readings and actions from the Ultrasonic */
    /* sensor to be recorded and carried out in a */
    /* function called water_level */
/****** SYSTEM REQUIREMENT 7 *****/
    /* Take readings at intervals of 3 seconds */
/****** SYSTEM REQUIREMENT 8 *****/
    /* DHT measures temperature. If temp is greater than */
    /* 32 degrees celcius print  temp and print high temp */
    /* if temp less than 25 degrees prints temp and print */
    /* low temp else print temp and print optimum temp */
/****** END SYSTEM REQUIREMENTS *****/

/****** DEFINITION OF LIBRARIES *****/
#include <Arduino.h>
#include <Ultrasonic.h>
#include <Servo.h>
#include <DHT.h>

/****** FUNCTION PROTOTYPES *****/
void setup(void);
void loop(void);
void water_temp(void);
void water_level(void);

/***** DEFINITION OF DIGITAL INPUT PINS *****/
const uint8_t myultrasonic_HC_SR04_Echo_PIN_D3 = 3;
const uint8_t myDHT_DHT11_DOUT_PIN_D4 = 4;

/***** DEFINITION OF DIGITAL OUTPUT PINS *****/
const uint8_t myultrasonic_HC_SR04_Trigger_PIN_D2 = 2;
const uint8_t red_LED_PIN_D6 = 6;
const uint8_t red_LED_PIN_D7 = 7;
const uint8_t green_LED_PIN_D8 = 8;

/***** DEFINITION OF PWM OUTPUT PINS *****/
const uint8_t myservo_Servomotor_PWMSignal_PIN_D5 = 5;

/****** DEFINITION OF LIBRARIES CLASS INSTANCES*****/
Ultrasonic ultrasonic(myultrasonic_HC_SR04_Trigger_PIN_D2, myultrasonic_HC_SR04_Echo_PIN_D3);
Servo servo;
DHT dht(myDHT_DHT11_DOUT_PIN_D4, DHT11);

void setup(void)
{
  // put your setup code here, to run once:
  pinMode(myultrasonic_HC_SR04_Echo_PIN_D3, INPUT);
  pinMode(myDHT_DHT11_DOUT_PIN_D4, INPUT_PULLUP);

  pinMode(myultrasonic_HC_SR04_Trigger_PIN_D2, OUTPUT);
  pinMode(red_LED_PIN_D6, OUTPUT);
  pinMode(red_LED_PIN_D7, OUTPUT);
  pinMode(green_LED_PIN_D8, OUTPUT);
  pinMode(myservo_Servomotor_PWMSignal_PIN_D5, OUTPUT);

  servo.attach(myservo_Servomotor_PWMSignal_PIN_D5);

  dht.begin();

  Serial.begin(9600); // Initialize serial communication
}

void loop(void)
{
  // put your main code here, to run repeatedly:
  water_temp();
  water_level();
  delay(3000);
}

void water_temp(void)
{
  float temperature = dht.readTemperature();

  if (temperature > 32)
  {
    Serial.print("Temperature: ");
    Serial.print(temperature);
    Serial.println("°C - High Temperature");
  }
  else if (temperature < 25)
  {
    Serial.print("Temperature: ");
    Serial.print(temperature);
    Serial.println("°C - Low Temperature");
  }
  else
  {
    Serial.print("Temperature: ");
    Serial.print(temperature);
    Serial.println("°C - Optimum Temperature");
  }
}

void water_level(void)
{
  unsigned int distance = ultrasonic.read();

  if (distance > 30)
  {
    Serial.print("Distance: ");
    Serial.print(distance);
    Serial.println(" cm - Overflow");
    digitalWrite(red_LED_PIN_D6, HIGH);
    digitalWrite(red_LED_PIN_D7, LOW);
    digitalWrite(green_LED_PIN_D8, LOW);
    servo.write(180);
  }
  else if (distance < 15)
  {
    Serial.print("Distance: ");
    Serial.print(distance);
    Serial.println(" cm - Underflow");
    digitalWrite(red_LED_PIN_D6, LOW);
    digitalWrite(red_LED_PIN_D7, HIGH);
    digitalWrite(green_LED_PIN_D8, LOW);
    servo.write(180);
  }
  else if (distance >= 16 && distance <= 29)
  {
    Serial.print("Distance: ");
    Serial.print(distance);
    Serial.println(" cm - Optimum Level");
    digitalWrite(red_LED_PIN_D6, LOW);
    digitalWrite(red_LED_PIN_D7, LOW);
    digitalWrite(green_LED_PIN_D8, HIGH);
    servo.write(0);
  }
  else
  {
    Serial.print("Distance: ");
    Serial.print(distance);
    Serial.println(" cm");
    digitalWrite(red_LED_PIN_D6, LOW);
    digitalWrite(red_LED_PIN_D7, LOW);
    digitalWrite(green_LED_PIN_D8, LOW);
    servo.write(0);
  }
}