Door Lock System with Arduino

This is a door lock security system made with Arduino.

Jul 22, 2017

•

175351 views

•

33 respects

smart appliances

security

Components and supplies

Servos (Tower Pro MG996R)

LED (generic)

Buzzer

Arduino Mega 2560

Standard LCD - 16x2 White on Blue

Jumper wires (generic)

Project description

Code

DOOR LOCK SECURITY SYSTEM WITH ARDUINO

c_cpp

1#include<Keypad.h> // KEYPAD LIBRARY FOR KEYPAD INTERFACING 
2#include<LiquidCrystal.h>
3  // LIBRARY FOR LCD INTERFACING
4#include<Servo.h>// LIBRARY FOR SERVO MOTOR
5//#include<String.h>
6#define
7  buzzer 20 // DEFINING PIN FOR BUZZER.
8
9LiquidCrystal lcd(14,15,16,17,18,19);
10  // PINS FOR LCD
11
12char keys[4][4]={ // LAYOUT OF KEYPAD
13 {'1','2','3','A'},
14
15  {'4','5','6', 'B'},
16 {'7','8','9', 'C'},
17 {'*','0','#', 'D'}};
18 
19byte
20  rowPin[4]={4,5,6,7}; // ROW PINS OF KEYPAD
21byte colPin[4]={8,9,10,11}; // COLUMN
22  PINS OF KEYPAD
23
24Servo servo_Motor; 
25String password = "159";  // SETTING
26  DEFAULT PASSWORD.
27int position = 0; // VARIABLE FOR DETERMINING THE POSITION.
28
29int
30  wrong = 0; // VARIABLE FOR CALCULATING THE WRONG INPUT.
31
32int redPin = 9; //
33  DEFINING PIN FOR RED LED
34int greenPin = 8; // DEFINING PIN FOR GREEN LED
35
36  
37Keypad keypad=Keypad(makeKeymap(keys),rowPin,colPin,4,4);
38// MAPPING THE
39  KEYPAD.
40
41
42int total = 0; // VARIABLE TO DETERMINE THE NUMBER OF WRONG ATTEMPTS.
43
44void
45  setup()
46{
47 pinMode(redPin,OUTPUT);
48 pinMode(greenPin,OUTPUT);
49 
50lcd.begin(16,2);
51lcd.print("DOOR
52  LOCK SYSTEM");
53lcd.setCursor(0,2);
54lcd.print("       BY:");
55delay(2000);
56lcd.clear();
57lcd.print("Creative");
58lcd.setCursor(0,2);
59lcd.print("
60    Engineer");
61delay(2000);
62lcd.clear();
63servo_Motor.attach(3);
64setLocked(true);
65delay(1000);
66
67pinMode(buzzer,
68  OUTPUT);
69}
70
71void loop()
72{
73  
74  lcd.clear();
75  lcd.print("Enter
76  Password:");
77  delay(100);
78  
79 char pressed=keypad.getKey();// TAKING
80  THE INPUT FROM KEYPAD
81 String key[3];
82  
83 if(pressed) // IF THE KEY IS
84  PRESSED
85 {
86  lcd.clear();
87  lcd.print("Enter Password:");
88  lcd.setCursor(position,2);
89
90  lcd.print(pressed);
91  delay(500);
92    if(pressed == '*' || pressed == '#')
93
94      {
95          position = 0;
96          setLocked(true);
97          lcd.clear();
98
99      }
100
101    else if(pressed == password[position])
102      {
103          key[position]=pressed;
104
105          position++;
106      }
107 
108    else if (pressed != password[position]
109  )
110      {// IN CASE OF WRONG INPUT INCREMENT BOTH WRONG AND POSITION.
111          wrong++;
112
113          position ++;
114      }
115
116    if(position == 3)
117      {// WHEN
118  POSITION == 3 THEN CHECK THE FOLLOWING
119          if( wrong >0) // IF ANY WRONG
120  INPUT IF GIVEN THEN INCREMENT TOTAL AND
121          // SET WRONG AND POSITION TO
122  ZERO.
123            {
124                total++;
125                wrong = 0;
126
127                position = 0;
128                lcd.clear();
129                lcd.print("WRONG");
130
131                lcd.setCursor(5,2);
132                lcd.print("PASSWORD");
133
134                delay(1000);
135                setLocked(true);
136            }
137
138
139          else if(position == 3 && wrong == 0)
140            {// IF NO WRONG VALUE
141  IS GIVEN THEN DISPLAY THE ACCEPTED PASSWORD AND
142              // MOVE THE SERVO
143  MOTOR.
144                position = 0;
145                wrong = 0;
146                lcd.clear();
147
148                lcd.print("PASSWORD");
149                lcd.setCursor(6,2);
150
151                lcd.print("ACCEPTED");
152                delay(2000);
153                lcd.clear();
154
155                lcd.print("Door Open");
156                delay(2000);
157                setLocked(false);
158
159            }
160
161          if(total ==3)// IF TOTAL OF 3 ATTEMPTS ARE DONE BY
162  ENTERING WRONG PASS
163          //WORD THEN SOUND A BUZZER AND SET TOTAL TO 0.
164
165            {
166                total=0;
167                buzzer_beep();
168
169                delay(500);
170            }
171
172        }
173
174   }
175
176
177   
178}
179
180void setLocked(int locked)// FUNCTION TO CHANGE STATUS OF SERVO
181  MOTOR.
182  {
183    if (locked)
184      {
185          digitalWrite(redPin, HIGH);
186
187          digitalWrite(greenPin, LOW);
188          delay(1000);
189          servo_Motor.attach(3);
190
191          servo_Motor.write(10);
192          delay(1000);
193          servo_Motor.detach();
194
195      }
196    else
197      {
198          digitalWrite(redPin, LOW);
199          digitalWrite(greenPin,
200  HIGH);
201          delay(1000);
202          servo_Motor.attach(3);
203          servo_Motor.write(90);
204
205          delay(1000);
206          servo_Motor.detach();
207      }
208  }
209void
210  buzzer_beep()// FUNCTION TO BEEP THE BUZZER.
211{
212   digitalWrite(buzzer,HIGH);
213
214   delay(1000);
215   digitalWrite(buzzer,LOW);
216   delay(1000);
217   lcd.clear();
218
219   lcd.setCursor(16,0);
220   lcd.print("Subscribe Channel");
221   lcd.setCursor(16,1);
222
223   lcd.print("For More Videos");
224   delay(2000);
225   while(1)
226   {
227
228   lcd.scrollDisplayLeft();
229   delay(200);
230   }
231}
232
233//IF VIDEO WAS
234  HELPFUL THE DO LIKE COMMENT AND SUBSCRIBE THE CHANNEL. ALSO SHARE THE 
235//VIDEO
236  SO THAT OTHERS CAN ALSO LEARN NEW THINGS.
237

#include<Keypad.h> // KEYPAD LIBRARY FOR KEYPAD INTERFACING 
#include<LiquidCrystal.h>
  // LIBRARY FOR LCD INTERFACING
#include<Servo.h>// LIBRARY FOR SERVO MOTOR
//#include<String.h>
#define
  buzzer 20 // DEFINING PIN FOR BUZZER.

LiquidCrystal lcd(14,15,16,17,18,19);
  // PINS FOR LCD

char keys[4][4]={ // LAYOUT OF KEYPAD
 {'1','2','3','A'},

  {'4','5','6', 'B'},
 {'7','8','9', 'C'},
 {'*','0','#', 'D'}};
 
byte
  rowPin[4]={4,5,6,7}; // ROW PINS OF KEYPAD
byte colPin[4]={8,9,10,11}; // COLUMN
  PINS OF KEYPAD

Servo servo_Motor; 
String password = "159";  // SETTING
  DEFAULT PASSWORD.
int position = 0; // VARIABLE FOR DETERMINING THE POSITION.

int
  wrong = 0; // VARIABLE FOR CALCULATING THE WRONG INPUT.

int redPin = 9; //
  DEFINING PIN FOR RED LED
int greenPin = 8; // DEFINING PIN FOR GREEN LED

  
Keypad keypad=Keypad(makeKeymap(keys),rowPin,colPin,4,4);
// MAPPING THE
  KEYPAD.


int total = 0; // VARIABLE TO DETERMINE THE NUMBER OF WRONG ATTEMPTS.

void
  setup()
{
 pinMode(redPin,OUTPUT);
 pinMode(greenPin,OUTPUT);
 
lcd.begin(16,2);
lcd.print("DOOR
  LOCK SYSTEM");
lcd.setCursor(0,2);
lcd.print("       BY:");
delay(2000);
lcd.clear();
lcd.print("Creative");
lcd.setCursor(0,2);
lcd.print("
    Engineer");
delay(2000);
lcd.clear();
servo_Motor.attach(3);
setLocked(true);
delay(1000);

pinMode(buzzer,
  OUTPUT);
}

void loop()
{
  
  lcd.clear();
  lcd.print("Enter
  Password:");
  delay(100);
  
 char pressed=keypad.getKey();// TAKING
  THE INPUT FROM KEYPAD
 String key[3];
  
 if(pressed) // IF THE KEY IS
  PRESSED
 {
  lcd.clear();
  lcd.print("Enter Password:");
  lcd.setCursor(position,2);

  lcd.print(pressed);
  delay(500);
    if(pressed == '*' || pressed == '#')

      {
          position = 0;
          setLocked(true);
          lcd.clear();

      }

    else if(pressed == password[position])
      {
          key[position]=pressed;

          position++;
      }
 
    else if (pressed != password[position]
  )
      {// IN CASE OF WRONG INPUT INCREMENT BOTH WRONG AND POSITION.
          wrong++;

          position ++;
      }

    if(position == 3)
      {// WHEN
  POSITION == 3 THEN CHECK THE FOLLOWING
          if( wrong >0) // IF ANY WRONG
  INPUT IF GIVEN THEN INCREMENT TOTAL AND
          // SET WRONG AND POSITION TO
  ZERO.
            {
                total++;
                wrong = 0;

                position = 0;
                lcd.clear();
                lcd.print("WRONG");

                lcd.setCursor(5,2);
                lcd.print("PASSWORD");

                delay(1000);
                setLocked(true);
            }


          else if(position == 3 && wrong == 0)
            {// IF NO WRONG VALUE
  IS GIVEN THEN DISPLAY THE ACCEPTED PASSWORD AND
              // MOVE THE SERVO
  MOTOR.
                position = 0;
                wrong = 0;
                lcd.clear();

                lcd.print("PASSWORD");
                lcd.setCursor(6,2);

                lcd.print("ACCEPTED");
                delay(2000);
                lcd.clear();

                lcd.print("Door Open");
                delay(2000);
                setLocked(false);

            }

          if(total ==3)// IF TOTAL OF 3 ATTEMPTS ARE DONE BY
  ENTERING WRONG PASS
          //WORD THEN SOUND A BUZZER AND SET TOTAL TO 0.

            {
                total=0;
                buzzer_beep();

                delay(500);
            }

        }

   }


   
}

void setLocked(int locked)// FUNCTION TO CHANGE STATUS OF SERVO
  MOTOR.
  {
    if (locked)
      {
          digitalWrite(redPin, HIGH);

          digitalWrite(greenPin, LOW);
          delay(1000);
          servo_Motor.attach(3);

          servo_Motor.write(10);
          delay(1000);
          servo_Motor.detach();

      }
    else
      {
          digitalWrite(redPin, LOW);
          digitalWrite(greenPin,
  HIGH);
          delay(1000);
          servo_Motor.attach(3);
          servo_Motor.write(90);

          delay(1000);
          servo_Motor.detach();
      }
  }
void
  buzzer_beep()// FUNCTION TO BEEP THE BUZZER.
{
   digitalWrite(buzzer,HIGH);

   delay(1000);
   digitalWrite(buzzer,LOW);
   delay(1000);
   lcd.clear();

   lcd.setCursor(16,0);
   lcd.print("Subscribe Channel");
   lcd.setCursor(16,1);

   lcd.print("For More Videos");
   delay(2000);
   while(1)
   {

   lcd.scrollDisplayLeft();
   delay(200);
   }
}

//IF VIDEO WAS
  HELPFUL THE DO LIKE COMMENT AND SUBSCRIBE THE CHANNEL. ALSO SHARE THE 
//VIDEO
  SO THAT OTHERS CAN ALSO LEARN NEW THINGS.

DOOR LOCK SECURITY SYSTEM WITH ARDUINO

c_cpp

1#include<Keypad.h> // KEYPAD LIBRARY FOR KEYPAD INTERFACING 
2#include<LiquidCrystal.h>  // LIBRARY FOR LCD INTERFACING
3#include<Servo.h>// LIBRARY FOR SERVO MOTOR
4//#include<String.h>
5#define  buzzer 20 // DEFINING PIN FOR BUZZER.
6
7LiquidCrystal lcd(14,15,16,17,18,19);  // PINS FOR LCD
8
9char keys[4][4]={ // LAYOUT OF KEYPAD
10 {'1','2','3','A'},
11  {'4','5','6', 'B'},
12 {'7','8','9', 'C'},
13 {'*','0','#', 'D'}};
14 
15byte  rowPin[4]={4,5,6,7}; // ROW PINS OF KEYPAD
16byte colPin[4]={8,9,10,11}; // COLUMN  PINS OF KEYPAD
17
18Servo servo_Motor; 
19String password = "159";  // SETTING  DEFAULT PASSWORD.
20int position = 0; // VARIABLE FOR DETERMINING THE POSITION.
21
22int  wrong = 0; // VARIABLE FOR CALCULATING THE WRONG INPUT.
23
24int redPin = 9; //  DEFINING PIN FOR RED LED
25int greenPin = 8; // DEFINING PIN FOR GREEN LED
26  
27Keypad keypad=Keypad(makeKeymap(keys),rowPin,colPin,4,4);
28// MAPPING THE  KEYPAD.
29
30
31int total = 0; // VARIABLE TO DETERMINE THE NUMBER OF WRONG ATTEMPTS.
32
33void  setup()
34{
35 pinMode(redPin,OUTPUT);
36 pinMode(greenPin,OUTPUT);
37 
38lcd.begin(16,2);
39lcd.print("DOOR  LOCK SYSTEM");
40lcd.setCursor(0,2);
41lcd.print("       BY:");
42delay(2000);
43lcd.clear();
44lcd.print("Creative");
45lcd.setCursor(0,2);
46lcd.print("    Engineer");
47delay(2000);
48lcd.clear();
49servo_Motor.attach(3);
50setLocked(true);
51delay(1000);
52
53pinMode(buzzer,  OUTPUT);
54}
55
56void loop()
57{
58  
59  lcd.clear();
60  lcd.print("Enter  Password:");
61  delay(100);
62  
63 char pressed=keypad.getKey();// TAKING  THE INPUT FROM KEYPAD
64 String key[3];
65  
66 if(pressed) // IF THE KEY IS  PRESSED
67 {
68  lcd.clear();
69  lcd.print("Enter Password:");
70  lcd.setCursor(position,2);
71  lcd.print(pressed);
72  delay(500);
73    if(pressed == '*' || pressed == '#')
74      {
75          position = 0;
76          setLocked(true);
77          lcd.clear();
78      }
79
80    else if(pressed == password[position])
81      {
82          key[position]=pressed;
83          position++;
84      }
85 
86    else if (pressed != password[position]  )
87      {// IN CASE OF WRONG INPUT INCREMENT BOTH WRONG AND POSITION.
88          wrong++;
89          position ++;
90      }
91
92    if(position == 3)
93      {// WHEN  POSITION == 3 THEN CHECK THE FOLLOWING
94          if( wrong >0) // IF ANY WRONG  INPUT IF GIVEN THEN INCREMENT TOTAL AND
95          // SET WRONG AND POSITION TO  ZERO.
96            {
97                total++;
98                wrong = 0;
99                position = 0;
100                lcd.clear();
101                lcd.print("WRONG");
102                lcd.setCursor(5,2);
103                lcd.print("PASSWORD");
104                delay(1000);
105                setLocked(true);
106            }
107
108          else if(position == 3 && wrong == 0)
109            {// IF NO WRONG VALUE  IS GIVEN THEN DISPLAY THE ACCEPTED PASSWORD AND
110              // MOVE THE SERVO  MOTOR.
111                position = 0;
112                wrong = 0;
113                lcd.clear();
114                lcd.print("PASSWORD");
115                lcd.setCursor(6,2);
116                lcd.print("ACCEPTED");
117                delay(2000);
118                lcd.clear();
119                lcd.print("Door Open");
120                delay(2000);
121                setLocked(false);
122            }
123
124          if(total ==3)// IF TOTAL OF 3 ATTEMPTS ARE DONE BY  ENTERING WRONG PASS
125          //WORD THEN SOUND A BUZZER AND SET TOTAL TO 0.
126            {
127                total=0;
128                buzzer_beep();
129                delay(500);
130            }
131
132        }
133
134   }
135
136   
137}
138
139void setLocked(int locked)// FUNCTION TO CHANGE STATUS OF SERVO  MOTOR.
140  {
141    if (locked)
142      {
143          digitalWrite(redPin, HIGH);
144          digitalWrite(greenPin, LOW);
145          delay(1000);
146          servo_Motor.attach(3);
147          servo_Motor.write(10);
148          delay(1000);
149          servo_Motor.detach();
150      }
151    else
152      {
153          digitalWrite(redPin, LOW);
154          digitalWrite(greenPin,  HIGH);
155          delay(1000);
156          servo_Motor.attach(3);
157          servo_Motor.write(90);
158          delay(1000);
159          servo_Motor.detach();
160      }
161  }
162void  buzzer_beep()// FUNCTION TO BEEP THE BUZZER.
163{
164   digitalWrite(buzzer,HIGH);
165   delay(1000);
166   digitalWrite(buzzer,LOW);
167   delay(1000);
168   lcd.clear();
169   lcd.setCursor(16,0);
170   lcd.print("Subscribe Channel");
171   lcd.setCursor(16,1);
172   lcd.print("For More Videos");
173   delay(2000);
174   while(1)
175   {
176   lcd.scrollDisplayLeft();
177   delay(200);
178   }
179}
180
181//IF VIDEO WAS  HELPFUL THE DO LIKE COMMENT AND SUBSCRIBE THE CHANNEL. ALSO SHARE THE 
182//VIDEO  SO THAT OTHERS CAN ALSO LEARN NEW THINGS.
183

#include<Keypad.h> // KEYPAD LIBRARY FOR KEYPAD INTERFACING 
#include<LiquidCrystal.h>  // LIBRARY FOR LCD INTERFACING
#include<Servo.h>// LIBRARY FOR SERVO MOTOR
//#include<String.h>
#define  buzzer 20 // DEFINING PIN FOR BUZZER.

LiquidCrystal lcd(14,15,16,17,18,19);  // PINS FOR LCD

char keys[4][4]={ // LAYOUT OF KEYPAD
 {'1','2','3','A'},
  {'4','5','6', 'B'},
 {'7','8','9', 'C'},
 {'*','0','#', 'D'}};
 
byte  rowPin[4]={4,5,6,7}; // ROW PINS OF KEYPAD
byte colPin[4]={8,9,10,11}; // COLUMN  PINS OF KEYPAD

Servo servo_Motor; 
String password = "159";  // SETTING  DEFAULT PASSWORD.
int position = 0; // VARIABLE FOR DETERMINING THE POSITION.

int  wrong = 0; // VARIABLE FOR CALCULATING THE WRONG INPUT.

int redPin = 9; //  DEFINING PIN FOR RED LED
int greenPin = 8; // DEFINING PIN FOR GREEN LED
  
Keypad keypad=Keypad(makeKeymap(keys),rowPin,colPin,4,4);
// MAPPING THE  KEYPAD.


int total = 0; // VARIABLE TO DETERMINE THE NUMBER OF WRONG ATTEMPTS.

void  setup()
{
 pinMode(redPin,OUTPUT);
 pinMode(greenPin,OUTPUT);
 
lcd.begin(16,2);
lcd.print("DOOR  LOCK SYSTEM");
lcd.setCursor(0,2);
lcd.print("       BY:");
delay(2000);
lcd.clear();
lcd.print("Creative");
lcd.setCursor(0,2);
lcd.print("    Engineer");
delay(2000);
lcd.clear();
servo_Motor.attach(3);
setLocked(true);
delay(1000);

pinMode(buzzer,  OUTPUT);
}

void loop()
{
  
  lcd.clear();
  lcd.print("Enter  Password:");
  delay(100);
  
 char pressed=keypad.getKey();// TAKING  THE INPUT FROM KEYPAD
 String key[3];
  
 if(pressed) // IF THE KEY IS  PRESSED
 {
  lcd.clear();
  lcd.print("Enter Password:");
  lcd.setCursor(position,2);
  lcd.print(pressed);
  delay(500);
    if(pressed == '*' || pressed == '#')
      {
          position = 0;
          setLocked(true);
          lcd.clear();
      }

    else if(pressed == password[position])
      {
          key[position]=pressed;
          position++;
      }
 
    else if (pressed != password[position]  )
      {// IN CASE OF WRONG INPUT INCREMENT BOTH WRONG AND POSITION.
          wrong++;
          position ++;
      }

    if(position == 3)
      {// WHEN  POSITION == 3 THEN CHECK THE FOLLOWING
          if( wrong >0) // IF ANY WRONG  INPUT IF GIVEN THEN INCREMENT TOTAL AND
          // SET WRONG AND POSITION TO  ZERO.
            {
                total++;
                wrong = 0;
                position = 0;
                lcd.clear();
                lcd.print("WRONG");
                lcd.setCursor(5,2);
                lcd.print("PASSWORD");
                delay(1000);
                setLocked(true);
            }

          else if(position == 3 && wrong == 0)
            {// IF NO WRONG VALUE  IS GIVEN THEN DISPLAY THE ACCEPTED PASSWORD AND
              // MOVE THE SERVO  MOTOR.
                position = 0;
                wrong = 0;
                lcd.clear();
                lcd.print("PASSWORD");
                lcd.setCursor(6,2);
                lcd.print("ACCEPTED");
                delay(2000);
                lcd.clear();
                lcd.print("Door Open");
                delay(2000);
                setLocked(false);
            }

          if(total ==3)// IF TOTAL OF 3 ATTEMPTS ARE DONE BY  ENTERING WRONG PASS
          //WORD THEN SOUND A BUZZER AND SET TOTAL TO 0.
            {
                total=0;
                buzzer_beep();
                delay(500);
            }

        }

   }

   
}

void setLocked(int locked)// FUNCTION TO CHANGE STATUS OF SERVO  MOTOR.
  {
    if (locked)
      {
          digitalWrite(redPin, HIGH);
          digitalWrite(greenPin, LOW);
          delay(1000);
          servo_Motor.attach(3);
          servo_Motor.write(10);
          delay(1000);
          servo_Motor.detach();
      }
    else
      {
          digitalWrite(redPin, LOW);
          digitalWrite(greenPin,  HIGH);
          delay(1000);
          servo_Motor.attach(3);
          servo_Motor.write(90);
          delay(1000);
          servo_Motor.detach();
      }
  }
void  buzzer_beep()// FUNCTION TO BEEP THE BUZZER.
{
   digitalWrite(buzzer,HIGH);
   delay(1000);
   digitalWrite(buzzer,LOW);
   delay(1000);
   lcd.clear();
   lcd.setCursor(16,0);
   lcd.print("Subscribe Channel");
   lcd.setCursor(16,1);
   lcd.print("For More Videos");
   delay(2000);
   while(1)
   {
   lcd.scrollDisplayLeft();
   delay(200);
   }
}

//IF VIDEO WAS  HELPFUL THE DO LIKE COMMENT AND SUBSCRIBE THE CHANNEL. ALSO SHARE THE 
//VIDEO  SO THAT OTHERS CAN ALSO LEARN NEW THINGS.

Downloadable files

lcd_with_arduino_ZHuuxD17fT.JPG

CIRCUIT DIAGRAMS

interfacing_keypad_with_arduino_8xDFWS5uS3.JPG

lcd_with_arduino_ZHuuxD17fT.JPG

CIRCUIT DIAGRAMS

Comments

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floriser

a year ago

i use the duino app.

floriser

a year ago

Which library should I use?

wilroystevens

a year ago

This looks like a very handy & useful project. I couldn't find the circuit to the servo though. Can you put me onto the example?

mpm-innovation

a year ago

Little bit very dark the video. Another similar like project can be found here: https://wokwi.com/projects/317419751192134209

promax123

2 years ago

nice one

vilacristian

2 years ago

esta muy bueno todo, pero le falta el diagrama en proteus para poderlo replicarlo bien porque sebe todos los cables, pero no se ve como están diagramas las conexiones de cada cable y pin solo se muestra como está el Arduino mega 2560 y la parte numérica, pero faltan más datos.

dynamitespark

2 years ago

Hello there! I currently have all the materials and have started building this project, but can not yet find where the motor attaches. Would you happen to have this schematic? The video is very helpful, but I don't know where to connect it.

wilroystevens

a year ago

Did you ever get a reply as to the connections to the servo?

Anonymous user

2 years ago

Hello Dear, I am novice in IOT. I got task from company they want to implement IOT in their office i.e Doors should be open when employee enter their password in mobile app that app contains all employee's database. so on basis of these information what kind of H/W and S/W should require. Kindly add your suggestion on this.

edwards5s

2 years ago

Often times, we need to secure a room at our home or office (perhaps a secret dexter’s laboratory) so that no one can access the room without our permission and ensure protection against theft or loss of our important accessories and assets. https://www.alaskasworld.kim/

Anonymous user

2 years ago

Nice.Can u please take a clear photo of the circuits design or can u please label the circuit design?

Anonymous user

2 years ago

yeah,i need it too.

Anonymous user

2 years ago

I want to prefer that project but need to add the GSM MODE SIM900A for allerting the user or an operator for get information on his phone by receive the sms from GSM SIM 900A,My problem is how to initialize the code for GSM SIM900 where after ARDUINO detect the wrong pattern key entered.

noeliaartal

2 years ago

This invention is deigned to be a “lock box” with a timer. Once the timer has counted down to zero it sends a signal to rotate the servo motor 90 degrees to unlock the hatch on the box it is installed in: https://www.lacestitadelbebe.es There are four push buttons, if you hold the first to the left, it will bring you into settings.

noeliaartal

3 years ago

Zeeshan_k

6 years ago

Can any one have the complete circuit diagram(vedio), connections vedio send it .. plz i needed ......urgent

Anonymous user

6 years ago

bujexfortian

7 years ago

Hanavihash

7 years ago

Nice.Can u please take a clear photo of the circuits design or can u please label the circuit design?

Anonymous user

2 years ago

yeah,i need it too.

jayesh_nawani

7 Followers

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3 Projects

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