The Code is: #include <Wire.h>
#include <LCD.h>
#include <LiquidCrystal_I2C.h>
#include <SoftwareSerial.h>
LiquidCrystal_I2C lcd(0x27,2,1,0,4,5,6,7);
SoftwareSerial BT(10,11); //Tx and Rx pins for BT communication const int temp_sensor = 0; //pin A0 (temperature sensor) const int fan = 22; //pin D2 (fan) float temp; //temperature value
int threshold = 21; //temperature threshold
const int LDRsensor = 1; //pin A1 (lighting sensor)
const int LED1 = 6; //pin D6 (LED 1)
const int LED2 = 7; //pin D7 (LED 2)
const int LED3 = 8; //pin D8 (LED 3)
const int LED4 = 9; //pin D9 (LED 4)
int LDRvalue; //natural light value
const int WL_sensor = 15; //pin A15 (water level sensor)
const int Wpump = 13; //pin D13 (water pump)
float water_level; //water level value
const int mov_sensor = 3; //pin D3 (movement sensor)
const int LEDalrm = 4; //pin D4 (alarm LED)
const int buzzer = 5; //pin D5 (buzzer)
int mov_value; //movement value (true or false)
char state; //data sent from App
char mode; //mode selected according to "state" value char order; //order to actuators according to "state" value void setup() //this function is only executed one time
{
lcd.begin (16,2);
lcd.setBacklightPin(3,POSITIVE);
lcd.setBacklight(HIGH);
lcd.setCursor(0,0);
lcd.print("TFG");
lcd.setCursor(0,1);
lcd.print("Anna Merino");
delay(4000);
lcd.clear();
pinMode(temp_sensor, INPUT); //temperature sensor Mode
pinMode(fan, OUTPUT) ; //fan Mode
pinMode(LDRsensor, INPUT); //lighting sensor Mode
pinMode(LED1, OUTPUT); //LED1 Mode
pinMode(LED2, OUTPUT); //LED2 Mode
pinMode(LED3, OUTPUT); //LED3 Mode
pinMode(LED4, OUTPUT); //LED4 Mode
pinMode(WL_sensor, INPUT) ; //water level sensor Mode
pinMode(Wpump, OUTPUT); //water pump Mode
pinMode(mov_sensor, INPUT); //movement sensor Mode
pinMode(LEDalrm, OUTPUT); //alarm LED Mode
pinMode(buzzer, OUTPUT); //buzzer Mode
BT.begin(9600); //set data rate in bits per second (baud) for data transmission } void loop() //function loop – continuously executed
{
if(BT.available()>0)
{
state = BT.read(); //transfer data sent by App to a local variable
}
if (state == 'Y')
{
mode = 'A';
}
else
if (state == 'Z')
{
mode = 'R';
}
else
if (state == 'X')
{
mode = 'D';
}
if (mode == 'A')
{
automaticmode(); //execute automatic function
}
else
if (mode == 'R')
{
remotemode(); //execute remote function
}
else
if (mode == 'D')
{
alarmmode(); //execute alarm function
}
} void alarmmode() // alarm function
{
water_level = analogRead(WL_sensor); //data of water level sensor transmission to a local variable
if (digitalRead(mov_sensor)) //evaluate movement captured {
digitalWrite(LEDalrm, HIGH);
digitalWrite(buzzer, HIGH);
}
else
{
digitalWrite(LEDalrm, LOW);
digitalWrite(buzzer, LOW);
}
if (water_level > 100) //water level control
{
digitalWrite(Wpump, HIGH);
}
else
{
digitalWrite(Wpump, LOW);
}
} void automaticmode() // automatic function
{
LDRvalue = analogRead(LDRsensor); //data of natural light transmission to a local variable water_level = analogRead(WL_sensor); //data of water level sensor transmission to a local variable
temp = analogRead(temp_sensor); //data of temperature sensor transmission to a local variable temp = temp*0.4883; //adjustment of temperature value digitalWrite(LEDalrm, LOW);
digitalWrite(buzzer, LOW);
lcd.setCursor(0,0);
lcd.print("Temperature");
lcd.setCursor(0,1);
lcd.print(temp); //LCD display – shows temperature value
lcd.setCursor(7,1);
lcd.print("ºC");
if (water_level > 100) //water level control
{
digitalWrite(Wpump, HIGH);
}
else
{
digitalWrite(Wpump, LOW);
}
if ((LDRvalue < 1023) & (LDRvalue >= 822)) //light control {
digitalWrite(LED1, LOW);
digitalWrite(LED2, LOW);
digitalWrite(LED3, LOW);
digitalWrite(LED4, LOW);
}
else if ((LDRvalue < 821)& (LDRvalue >= 617))
{
digitalWrite(LED1, HIGH);
digitalWrite(LED2, LOW);
digitalWrite(LED3, LOW); digitalWrite(LED4, LOW);
}
else if ((LDRvalue < 616)& (LDRvalue >= 412))
{
digitalWrite(LED1, HIGH);
digitalWrite(LED2, HIGH);
digitalWrite(LED3, LOW);
digitalWrite(LED4, LOW);
}
else if ((LDRvalue < 411)& (LDRvalue >= 206))
{
digitalWrite(LED1, HIGH);
digitalWrite(LED2, HIGH);
digitalWrite(LED3, HIGH);
digitalWrite(LED4, LOW);
}
else if (LDRvalue < 205)
{
digitalWrite(LED1, HIGH);
digitalWrite(LED2, HIGH);
digitalWrite(LED3, HIGH);
digitalWrite(LED4, HIGH);
}
if (temp >= threshold) //temperature control
{
digitalWrite(fan, HIGH);
}
else if (temp < threshold)
{
digitalWrite(fan, LOW);
}
}
void remotemode() // remote function
{
digitalWrite(LED1, LOW);
digitalWrite(LED2, LOW);
digitalWrite(LED3, LOW);
digitalWrite(LED4, LOW);
digitalWrite(fan, LOW);
digitalWrite(Wpump, LOW);
digitalWrite(LEDalrm, LOW);
digitalWrite(buzzer, LOW);
if(BT.available()>0)
{
state = BT.read(); //transfer data sent by App to a local variable
}
if (state == 'D') //actuators operation according to orders received {
digitalWrite(LED1, LOW);
}
else
if (state == 'C')
{
digitalWrite(LED1, HIGH);
}
else
if (state == 'F')
{
digitalWrite(LED2, LOW);
}
else
if (state == 'E')
{
digitalWrite(LED2, HIGH);
}
else
if (state == 'H') {
digitalWrite(LED3, LOW);
}
else
if (state == 'G')
{
digitalWrite(LED3, HIGH);
}
else
if (state == 'J')
{
digitalWrite(LED4, LOW);
}
else
if (state == 'I')
{
digitalWrite(LED4, HIGH);
}
else
if (state == 'L')
{
digitalWrite(fan, LOW);
}
else
if (state == 'K')
{
digitalWrite(fan, HIGH);
}
else
if (state == 'N')
{
digitalWrite(Wpump, LOW);
}
else
if (state == 'M')
{
digitalWrite(Wpump, HIGH);
} if (state == 'O')
{
digitalWrite(LED1, HIGH);
digitalWrite(LED2, HIGH);
digitalWrite(LED3, HIGH);
digitalWrite(LED4, HIGH);
}
else
if (state == 'P')
{
digitalWrite(LED1, LOW);
digitalWrite(LED2, LOW);
digitalWrite(LED3, LOW);
digitalWrite(LED4, LOW);
}
}
#include <Wire.h>
#include <LCD.h>
#include <LiquidCrystal_I2C.h>
#include <SoftwareSerial.h>
LiquidCrystal_I2C lcd(0x27,2,1,0,4,5,6,7);
SoftwareSerial BT(10,11); //Tx and Rx pins for BT communication const int temp_sensor = 0; //pin A0 (temperature sensor) const int fan = 22; //pin D2 (fan) float temp; //temperature value
int threshold = 21; //temperature threshold
const int LDRsensor = 1; //pin A1 (lighting sensor)
const int LED1 = 6; //pin D6 (LED 1)
const int LED2 = 7; //pin D7 (LED 2)
const int LED3 = 8; //pin D8 (LED 3)
const int LED4 = 9; //pin D9 (LED 4)
int LDRvalue; //natural light value
const int WL_sensor = 15; //pin A15 (water level sensor)
const int Wpump = 13; //pin D13 (water pump)
float water_level; //water level value
const int mov_sensor = 3; //pin D3 (movement sensor)
const int LEDalrm = 4; //pin D4 (alarm LED)
const int buzzer = 5; //pin D5 (buzzer)
int mov_value; //movement value (true or false)
char state; //data sent from App
char mode; //mode selected according to "state" value char order; //order to actuators according to "state" value
void setup() //this function is only executed one time
{
lcd.begin (16,2);
lcd.setBacklightPin(3,POSITIVE);
lcd.setBacklight(HIGH);
lcd.setCursor(0,0);
lcd.print("TFG");
lcd.setCursor(0,1);
lcd.print("Anna Merino");
delay(4000);
lcd.clear();
pinMode(temp_sensor, INPUT); //temperature sensor Mode
pinMode(fan, OUTPUT) ; //fan Mode
pinMode(LDRsensor, INPUT); //lighting sensor Mode
pinMode(LED1, OUTPUT); //LED1 Mode
pinMode(LED2, OUTPUT); //LED2 Mode
pinMode(LED3, OUTPUT); //LED3 Mode
pinMode(LED4, OUTPUT); //LED4 Mode
pinMode(WL_sensor, INPUT) ; //water level sensor Mode
pinMode(Wpump, OUTPUT); //water pump Mode
pinMode(mov_sensor, INPUT); //movement sensor Mode
pinMode(LEDalrm, OUTPUT); //alarm LED Mode
pinMode(buzzer, OUTPUT); //buzzer Mode
BT.begin(9600); //set data rate in bits per second (baud) for data transmission }
void loop() //function loop – continuously executed
{
if(BT.available()>0)
{
state = BT.read(); //transfer data sent by App to a local variable
}
if (state == 'Y')
{
mode = 'A';
}
else
if (state == 'Z')
{
mode = 'R';
}
else
if (state == 'X')
{
mode = 'D';
}
if (mode == 'A')
{
automaticmode(); //execute automatic function
}
else
if (mode == 'R')
{
remotemode(); //execute remote function
}
else
if (mode == 'D')
{
alarmmode(); //execute alarm function
}
}
void alarmmode() // alarm function
{
water_level = analogRead(WL_sensor); //data of water level sensor transmission to a local variable
if (digitalRead(mov_sensor)) //evaluate movement captured {
digitalWrite(LEDalrm, HIGH);
digitalWrite(buzzer, HIGH);
}
else
{
digitalWrite(LEDalrm, LOW);
digitalWrite(buzzer, LOW);
}
if (water_level > 100) //water level control
{
digitalWrite(Wpump, HIGH);
}
else
{
digitalWrite(Wpump, LOW);
}
}
void automaticmode() // automatic function
{
LDRvalue = analogRead(LDRsensor); //data of natural light transmission to a local variable water_level = analogRead(WL_sensor); //data of water level sensor transmission to a local variable
temp = analogRead(temp_sensor); //data of temperature sensor transmission to a local variable temp = temp*0.4883; //adjustment of temperature value digitalWrite(LEDalrm, LOW);
digitalWrite(buzzer, LOW);
lcd.setCursor(0,0);
lcd.print("Temperature");
lcd.setCursor(0,1);
lcd.print(temp); //LCD display – shows temperature value
lcd.setCursor(7,1);
lcd.print("ºC");
if (water_level > 100) //water level control
{
digitalWrite(Wpump, HIGH);
}
else
{
digitalWrite(Wpump, LOW);
}
if ((LDRvalue < 1023) & (LDRvalue >= 822)) //light control {
digitalWrite(LED1, LOW);
digitalWrite(LED2, LOW);
digitalWrite(LED3, LOW);
digitalWrite(LED4, LOW);
}
else if ((LDRvalue < 821)& (LDRvalue >= 617))
{
digitalWrite(LED1, HIGH);
digitalWrite(LED2, LOW);
digitalWrite(LED3, LOW);
digitalWrite(LED4, LOW);
}
else if ((LDRvalue < 616)& (LDRvalue >= 412))
{
digitalWrite(LED1, HIGH);
digitalWrite(LED2, HIGH);
digitalWrite(LED3, LOW);
digitalWrite(LED4, LOW);
}
else if ((LDRvalue < 411)& (LDRvalue >= 206))
{
digitalWrite(LED1, HIGH);
digitalWrite(LED2, HIGH);
digitalWrite(LED3, HIGH);
digitalWrite(LED4, LOW);
}
else if (LDRvalue < 205)
{
digitalWrite(LED1, HIGH);
digitalWrite(LED2, HIGH);
digitalWrite(LED3, HIGH);
digitalWrite(LED4, HIGH);
}
if (temp >= threshold) //temperature control
{
digitalWrite(fan, HIGH);
}
else if (temp < threshold)
{
digitalWrite(fan, LOW);
}
}
void remotemode() // remote function
{
digitalWrite(LED1, LOW);
digitalWrite(LED2, LOW);
digitalWrite(LED3, LOW);
digitalWrite(LED4, LOW);
digitalWrite(fan, LOW);
digitalWrite(Wpump, LOW);
digitalWrite(LEDalrm, LOW);
digitalWrite(buzzer, LOW);
if(BT.available()>0)
{
state = BT.read(); //transfer data sent by App to a local variable
}
if (state == 'D') //actuators operation according to orders received {
digitalWrite(LED1, LOW);
}
else
if (state == 'C')
{
digitalWrite(LED1, HIGH);
}
else
if (state == 'F')
{
digitalWrite(LED2, LOW);
}
else
if (state == 'E')
{
digitalWrite(LED2, HIGH);
}
else
if (state == 'H')
{
digitalWrite(LED3, LOW);
}
else
if (state == 'G')
{
digitalWrite(LED3, HIGH);
}
else
if (state == 'J')
{
digitalWrite(LED4, LOW);
}
else
if (state == 'I')
{
digitalWrite(LED4, HIGH);
}
else
if (state == 'L')
{
digitalWrite(fan, LOW);
}
else
if (state == 'K')
{
digitalWrite(fan, HIGH);
}
else
if (state == 'N')
{
digitalWrite(Wpump, LOW);
}
else
if (state == 'M')
{
digitalWrite(Wpump, HIGH);
}
if (state == 'O')
{
digitalWrite(LED1, HIGH);
digitalWrite(LED2, HIGH);
digitalWrite(LED3, HIGH);
digitalWrite(LED4, HIGH);
}
else
if (state == 'P')
{
digitalWrite(LED1, LOW);
digitalWrite(LED2, LOW);
digitalWrite(LED3, LOW);
digitalWrite(LED4, LOW);
}
}
