Home automation using Keypad

1#include <Keypad.h>
2#include<Servo.h>
3#include <Wire.h> 
4#include  <LiquidCrystal_I2C.h>
5LiquidCrystal_I2C lcd(0x27,20,4);  // set the LCD address  to 0x27 for a 16 chars and 2 line display
6int servoPin =A0;
7Servo myServo;
8const  int Forward = A1;
9const int Backward = A2;
10const int ROW_NUM = 4; //four rows
11const  int COLUMN_NUM = 4; //three columns
12
13char keys[ROW_NUM][COLUMN_NUM] = {
14  {'1', '2', '3', 'A'},
15  {'4', '5', '6', 'B'},
16  {'7', '8', '9', 'C'},
17  {'*', '0', '#', 'D'}
18};
19
20byte pin_rows[ROW_NUM] = {9, 8, 7, 6}; //connect  to the row pinouts of the keypad
21byte pin_column[COLUMN_NUM] = {5, 4, 3, 2};  //connect to the column pinouts of the keypad
22
23Keypad keypad = Keypad( makeKeymap(keys),  pin_rows, pin_column, ROW_NUM, COLUMN_NUM );
24
25const String password_1 = "1234";  // door open
26const String password_2 = "4321"; // door close
27const String  password_3 = "5642"; // fan
28
29String input_password;
30
31int red_light_pin=  13;
32int green_light_pin = 12;
33int blue_light_pin = 11;
34void setup(){
35  Serial.begin(9600);
36  lcd.init();                      // initialize the lcd  
37  lcd.backlight();
38  myServo.attach(servoPin);
39  pinMode(leftForward ,  OUTPUT);
40  pinMode(leftBackward , OUTPUT);
41  pinMode(red_light_pin, OUTPUT);
42  pinMode(green_light_pin, OUTPUT);
43  pinMode(blue_light_pin, OUTPUT);
44  input_password.reserve(4);  // maximum input characters is 4, change if needed
45}
46void setColour(int red_light_value,  int green_light_value, int blue_light_value)
47 {
48  analogWrite(red_light_pin,  red_light_value);
49  analogWrite(green_light_pin, green_light_value);
50  analogWrite(blue_light_pin,  blue_light_value);
51}
52void loop(){
53  char key = keypad.getKey();
54
55  if (key){
56    Serial.println(key);
57    lcd.setCursor(0, 0);
58    lcd.print(key);
59     switch (key)
60        {
61           case 'A':
62              setColour(255,0,0);//GREEN
63              break;
64           case 'B':
65              setColour(0,255,0);//GREEN
66              break;
67           case 'C':
68              setColour(0,0,255);//BLUE
69              break;
70           case 'D':
71              setColour(255,255,125);//RASPBERRY
72              break;
73           case '7':
74              setColour(255,0,255);//MAGENTA
75              break;
76           case '8':
77              setColour(225,255,0);//YELLOW
78              break;
79           case '9':
80              setColour(225,255,255);//WHITE
81              break;
82           default:
83                setColour(0,0,0);  //NO COLOR
84        }
85     if(key == '*') {
86      input_password = "";//  reset input password
87      lcd.clear();
88    } else if(key == '#') {
89      lcd.clear();
90      if(input_password == password_1) {
91        Serial.println("door unlocked");
92        myServo.write(90);
93        lcd.setCursor(0, 0);
94        lcd.print("CORRECT!");
95        lcd.setCursor(0, 1);
96        lcd.print("DOOR UNLOCKED!");
97        
98        
99      }
100      else if(input_password == password_2){
101        Serial.println("door  locked");
102        myServo.write(0);
103        lcd.setCursor(0, 0);
104        lcd.print("CORRECT!");
105        lcd.setCursor(0, 1);
106        lcd.print("DOOR LOCKED!");
107        
108      }
109      else if(input_password == password_3){
110        Serial.println("fan  on");
111        digitalWrite(Forward , HIGH);
112        digitalWrite(Backward  , LOW);
113        lcd.setCursor(0, 0);
114        lcd.print("CORRECT!");
115        lcd.setCursor(0, 1);
116        lcd.print("FAN ON!");
117        
118      }
119      else {
120        Serial.println("password is incorrect, try again");
121        lcd.setCursor(0, 0);
122        lcd.print("INCORRECT!");
123        lcd.setCursor(0,  1);
124        lcd.print("TRY AGAIN!");
125        
126      }
127
128      input_password  = ""; // reset input password
129    } else {
130      input_password += key;  string
131      lcd.setCursor(input_password.length(), 0); // move cursor to new  point 
132      lcd.print('*');                 // print * key as hidden character
133    }
134  }
135}
136

1#include <Keypad.h>
2#include<Servo.h>
3#include <Wire.h> 
4#include
5  <LiquidCrystal_I2C.h>
6LiquidCrystal_I2C lcd(0x27,20,4);  // set the LCD address
7  to 0x27 for a 16 chars and 2 line display
8int servoPin =A0;
9Servo myServo;
10const
11  int Forward = A1;
12const int Backward = A2;
13const int ROW_NUM = 4; //four rows
14const
15  int COLUMN_NUM = 4; //three columns
16
17char keys[ROW_NUM][COLUMN_NUM] = {
18
19  {'1', '2', '3', 'A'},
20  {'4', '5', '6', 'B'},
21  {'7', '8', '9', 'C'},
22
23  {'*', '0', '#', 'D'}
24};
25
26byte pin_rows[ROW_NUM] = {9, 8, 7, 6}; //connect
27  to the row pinouts of the keypad
28byte pin_column[COLUMN_NUM] = {5, 4, 3, 2};
29  //connect to the column pinouts of the keypad
30
31Keypad keypad = Keypad( makeKeymap(keys),
32  pin_rows, pin_column, ROW_NUM, COLUMN_NUM );
33
34const String password_1 = "1234";
35  // door open
36const String password_2 = "4321"; // door close
37const String
38  password_3 = "5642"; // fan
39
40String input_password;
41
42int red_light_pin=
43  13;
44int green_light_pin = 12;
45int blue_light_pin = 11;
46void setup(){
47
48  Serial.begin(9600);
49  lcd.init();                      // initialize the lcd
50  
51  lcd.backlight();
52  myServo.attach(servoPin);
53  pinMode(leftForward ,
54  OUTPUT);
55  pinMode(leftBackward , OUTPUT);
56  pinMode(red_light_pin, OUTPUT);
57
58  pinMode(green_light_pin, OUTPUT);
59  pinMode(blue_light_pin, OUTPUT);
60  input_password.reserve(4);
61  // maximum input characters is 4, change if needed
62}
63void setColour(int red_light_value,
64  int green_light_value, int blue_light_value)
65 {
66  analogWrite(red_light_pin,
67  red_light_value);
68  analogWrite(green_light_pin, green_light_value);
69  analogWrite(blue_light_pin,
70  blue_light_value);
71}
72void loop(){
73  char key = keypad.getKey();
74
75
76  if (key){
77    Serial.println(key);
78    lcd.setCursor(0, 0);
79    lcd.print(key);
80
81     switch (key)
82        {
83           case 'A':
84              setColour(255,0,0);//GREEN
85
86              break;
87           case 'B':
88              setColour(0,255,0);//GREEN
89
90              break;
91           case 'C':
92              setColour(0,0,255);//BLUE
93
94              break;
95           case 'D':
96              setColour(255,255,125);//RASPBERRY
97
98              break;
99           case '7':
100              setColour(255,0,255);//MAGENTA
101
102              break;
103           case '8':
104              setColour(225,255,0);//YELLOW
105
106              break;
107           case '9':
108              setColour(225,255,255);//WHITE
109
110              break;
111           default:
112                setColour(0,0,0);
113  //NO COLOR
114        }
115     if(key == '*') {
116      input_password = "";//
117  reset input password
118      lcd.clear();
119    } else if(key == '#') {
120      lcd.clear();
121
122      if(input_password == password_1) {
123        Serial.println("door unlocked");
124
125        myServo.write(90);
126        lcd.setCursor(0, 0);
127        lcd.print("CORRECT!");
128
129        lcd.setCursor(0, 1);
130        lcd.print("DOOR UNLOCKED!");
131        
132
133        
134      }
135      else if(input_password == password_2){
136        Serial.println("door
137  locked");
138        myServo.write(0);
139        lcd.setCursor(0, 0);
140        lcd.print("CORRECT!");
141
142        lcd.setCursor(0, 1);
143        lcd.print("DOOR LOCKED!");
144        
145
146      }
147      else if(input_password == password_3){
148        Serial.println("fan
149  on");
150        digitalWrite(Forward , HIGH);
151        digitalWrite(Backward
152  , LOW);
153        lcd.setCursor(0, 0);
154        lcd.print("CORRECT!");
155
156        lcd.setCursor(0, 1);
157        lcd.print("FAN ON!");
158        
159
160      }
161      else {
162        Serial.println("password is incorrect, try again");
163
164        lcd.setCursor(0, 0);
165        lcd.print("INCORRECT!");
166        lcd.setCursor(0,
167  1);
168        lcd.print("TRY AGAIN!");
169        
170      }
171
172      input_password
173  = ""; // reset input password
174    } else {
175      input_password += key;
176  string
177      lcd.setCursor(input_password.length(), 0); // move cursor to new
178  point 
179      lcd.print('*');                 // print * key as hidden character
180
181    }
182  }
183}
184