Electronic Safe with Arduino

Arduino Safe - 6 digit Passcode

May 20, 2016

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69 respects

safe

security

lock

Components and supplies

Breadboard (generic)

Resistor 330 ohm

Servos (Tower Pro MG996R)

Capacitor 100 µF

Jumper wires (generic)

Pushbutton switch 12mm

Standard LCD - 16x2 White on Blue

9V battery (generic)

9V Battery Clip

Arduino UNO

Apps and platforms

Arduino IDE

Project description

Code

arduino

1/* 
2Made by Marco Fusco
3May 20, 2016
4Contact me at: marcofusco111@gmail.com
5*/
6    
7
8#include <LiquidCrystal.h>
9#include <EEPROM.h>
10#include <Servo.h>
11
12int   address = 0;
13static unsigned long SaveTimer;
14static unsigned long SaveDelay   = (30 * 1000); 
15
16
17char CODE[10] = "1234E"; 
18char Str[10]; 
19char   CodeLength = 4;
20int Pos = 0;
21bool Unlocked;
22static unsigned long DisplayTimer;   
23static unsigned long DisplayDelay = 200;
24
25LiquidCrystal lcd(12, 11, 9,   8, 7, 6); 
26
27
28int buttonPin1 = 2;   
29int buttonPin2 = 3;
30int buttonPin3   = 4;
31int buttonPin4 = 5;
32
33int enterbutton = 10; 
34int clearlockbutton   = 13;
35
36Servo myServo;
37
38void setup() {
39
40  myServo.attach(A1);
41   
42  int EEPROMCodeOK = true;
43  for (Pos = 0; Pos <= (CodeLength); Pos++)   {
44    Str[Pos] =  EEPROM.read(Pos);
45    if (!(strrchr("1123456789", Str[Pos])))   { 
46      // not a valid code
47      EEPROMCodeOK = false;
48    }
49  }
50   Pos++;
51  Str[Pos] =  EEPROM.read(Pos); 
52  if (Str[CodeLength + 1] != 'E')   EEPROMCodeOK = false; 
53  if (EEPROMCodeOK) {
54    Str[CodeLength + 2] = '\\0';
55     strncpy(CODE, Str, CodeLength + 1);
56  }
57  ClearCode();
58
59  pinMode(buttonPin1,   INPUT_PULLUP);
60  pinMode(buttonPin2, INPUT_PULLUP);
61  pinMode(buttonPin3,   INPUT_PULLUP);
62  pinMode(buttonPin4, INPUT_PULLUP);
63
64  pinMode(enterbutton,   INPUT_PULLUP);
65  pinMode(clearlockbutton, INPUT_PULLUP);
66
67  lcd.begin(16,   2);
68  lcd.setCursor(0, 0);
69  lcd.print("Hello.");
70  delay(2000);
71   lcd.clear();
72  lcd.setCursor(0, 0);
73  lcd.print("Password:");
74
75   DisplayTimer = millis() + 200;
76}
77
78
79void loop() {
80  
81  Lock();
82   
83  Pos = constrain(Pos, 0, CodeLength);
84
85  int buttonState1 = digitalRead(buttonPin1);   
86  int buttonState2 = digitalRead(buttonPin2);
87  int buttonState3 = digitalRead(buttonPin3);
88   int buttonState4 = digitalRead(buttonPin4);
89
90  int clButtonState = digitalRead(clearlockbutton);
91   int enterButtonState = digitalRead(enterbutton);
92
93  lcd.setCursor(9, 0);
94
95   if (buttonState1 == LOW) {
96    Str[Pos] = '1';
97    Pos++;
98    Str[Pos]   = '\\0';
99    delay(250); 
100    while (digitalRead(buttonPin1) == LOW); 
101
102   }
103
104  else if (buttonState2 == LOW) {
105    Str[Pos] = '2';
106    Pos++;
107     Str[Pos] = '\\0';
108    delay(250); 
109    while (digitalRead(buttonPin2)   == LOW);
110
111  }
112
113  else if (buttonState3 == LOW) {
114    Str[Pos] = '3';
115     Pos++;
116    Str[Pos] = '\\0';
117    delay(250); 
118    while (digitalRead(buttonPin3)   == LOW);
119  }
120
121  else if (buttonState4 == LOW) {
122    Str[Pos] = '4';
123     Pos++;
124    Str[Pos] = '\\0';
125    delay(250); 
126    while (digitalRead(buttonPin4)   == LOW); 
127
128  }
129  else if (enterButtonState == LOW) {
130    Str[Pos] =   'E';
131    Pos++;
132    Str[Pos] = '\\0';
133    delay(250);
134    while (digitalRead(buttonPin1)   == LOW); 
135     if (strcmp (Str,CODE) == 0) {
136      Unlocked = true;
137      lcd.setCursor(0,   0);
138      lcd.print(" Access Granted");
139      delay(2000);
140      lcd.clear();
141       lcd.print("    Unlocked");
142    } 
143    else if (SaveTimer > millis()   && (Pos + 1) == CodeLength) { 
144
145      strcpy(CODE, Str);
146      for (Pos   = 0; Pos <= (CodeLength + 1); Pos++) {
147        EEPROM.write(Pos, Str[Pos]);
148       }
149      lcd.setCursor(0, 0);
150      lcd.print("Saving Code:");
151       lcd.setCursor(0, 1);
152      lcd.print(Str);
153
154      Unlocked = true;
155     }
156
157    else { 
158
159      lcd.clear();
160      lcd.print(" Access   Denied.");
161      delay(2000);
162      lcd.clear();
163      lcd.print("Password:");
164
165     }
166
167    while (Unlocked) {
168      Unlock();
169      if (digitalRead(clearlockbutton)   == LOW) {
170        delay(200);
171        lcd.clear();
172        lcd.print("      Locked");
173        delay(2000);
174        lcd.clear();
175        Unlocked   = false;
176        SaveTimer = millis() + 30000;
177      }
178    }
179    
180     ClearCode();
181
182    
183  }
184
185  else if (clButtonState == LOW) {
186     delay(500);
187
188    while (clearlockbutton == LOW);
189    if ((millis()   - SaveTimer) > 4500) {
190      
191    }
192    
193    ClearCode();
194    
195   }
196
197  if ( (long)( millis() - DisplayTimer ) >= 0) {
198    DisplayTimer   += DisplayDelay;
199    lcd.setCursor(9, 0); 
200    lcd.print(Str);
201    lcd.print("      ");
202
203  }
204}
205
206void ClearCode() {
207  
208  Pos = 0;
209  Str[Pos]   = '\\0';
210  lcd.setCursor(0, 0);
211  lcd.print("Password:");
212  lcd.setCursor(0,   1);
213  lcd.print("          ");
214  
215}
216
217void Unlock() {
218
219  myServo.write(150);
220   
221}
222
223void Lock() {
224
225  myServo.write(50);
226
227}
228
229

/* 
Made by Marco Fusco
May 20, 2016
Contact me at: marcofusco111@gmail.com
*/
    

#include <LiquidCrystal.h>
#include <EEPROM.h>
#include <Servo.h>

int   address = 0;
static unsigned long SaveTimer;
static unsigned long SaveDelay   = (30 * 1000); 


char CODE[10] = "1234E"; 
char Str[10]; 
char   CodeLength = 4;
int Pos = 0;
bool Unlocked;
static unsigned long DisplayTimer;   
static unsigned long DisplayDelay = 200;

LiquidCrystal lcd(12, 11, 9,   8, 7, 6); 


int buttonPin1 = 2;   
int buttonPin2 = 3;
int buttonPin3   = 4;
int buttonPin4 = 5;

int enterbutton = 10; 
int clearlockbutton   = 13;

Servo myServo;

void setup() {

  myServo.attach(A1);
   
  int EEPROMCodeOK = true;
  for (Pos = 0; Pos <= (CodeLength); Pos++)   {
    Str[Pos] =  EEPROM.read(Pos);
    if (!(strrchr("1123456789", Str[Pos])))   { 
      // not a valid code
      EEPROMCodeOK = false;
    }
  }
   Pos++;
  Str[Pos] =  EEPROM.read(Pos); 
  if (Str[CodeLength + 1] != 'E')   EEPROMCodeOK = false; 
  if (EEPROMCodeOK) {
    Str[CodeLength + 2] = '\\0';
     strncpy(CODE, Str, CodeLength + 1);
  }
  ClearCode();

  pinMode(buttonPin1,   INPUT_PULLUP);
  pinMode(buttonPin2, INPUT_PULLUP);
  pinMode(buttonPin3,   INPUT_PULLUP);
  pinMode(buttonPin4, INPUT_PULLUP);

  pinMode(enterbutton,   INPUT_PULLUP);
  pinMode(clearlockbutton, INPUT_PULLUP);

  lcd.begin(16,   2);
  lcd.setCursor(0, 0);
  lcd.print("Hello.");
  delay(2000);
   lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("Password:");

   DisplayTimer = millis() + 200;
}


void loop() {
  
  Lock();
   
  Pos = constrain(Pos, 0, CodeLength);

  int buttonState1 = digitalRead(buttonPin1);   
  int buttonState2 = digitalRead(buttonPin2);
  int buttonState3 = digitalRead(buttonPin3);
   int buttonState4 = digitalRead(buttonPin4);

  int clButtonState = digitalRead(clearlockbutton);
   int enterButtonState = digitalRead(enterbutton);

  lcd.setCursor(9, 0);

   if (buttonState1 == LOW) {
    Str[Pos] = '1';
    Pos++;
    Str[Pos]   = '\\0';
    delay(250); 
    while (digitalRead(buttonPin1) == LOW); 

   }

  else if (buttonState2 == LOW) {
    Str[Pos] = '2';
    Pos++;
     Str[Pos] = '\\0';
    delay(250); 
    while (digitalRead(buttonPin2)   == LOW);

  }

  else if (buttonState3 == LOW) {
    Str[Pos] = '3';
     Pos++;
    Str[Pos] = '\\0';
    delay(250); 
    while (digitalRead(buttonPin3)   == LOW);
  }

  else if (buttonState4 == LOW) {
    Str[Pos] = '4';
     Pos++;
    Str[Pos] = '\\0';
    delay(250); 
    while (digitalRead(buttonPin4)   == LOW); 

  }
  else if (enterButtonState == LOW) {
    Str[Pos] =   'E';
    Pos++;
    Str[Pos] = '\\0';
    delay(250);
    while (digitalRead(buttonPin1)   == LOW); 
     if (strcmp (Str,CODE) == 0) {
      Unlocked = true;
      lcd.setCursor(0,   0);
      lcd.print(" Access Granted");
      delay(2000);
      lcd.clear();
       lcd.print("    Unlocked");
    } 
    else if (SaveTimer > millis()   && (Pos + 1) == CodeLength) { 

      strcpy(CODE, Str);
      for (Pos   = 0; Pos <= (CodeLength + 1); Pos++) {
        EEPROM.write(Pos, Str[Pos]);
       }
      lcd.setCursor(0, 0);
      lcd.print("Saving Code:");
       lcd.setCursor(0, 1);
      lcd.print(Str);

      Unlocked = true;
     }

    else { 

      lcd.clear();
      lcd.print(" Access   Denied.");
      delay(2000);
      lcd.clear();
      lcd.print("Password:");

     }

    while (Unlocked) {
      Unlock();
      if (digitalRead(clearlockbutton)   == LOW) {
        delay(200);
        lcd.clear();
        lcd.print("      Locked");
        delay(2000);
        lcd.clear();
        Unlocked   = false;
        SaveTimer = millis() + 30000;
      }
    }
    
     ClearCode();

    
  }

  else if (clButtonState == LOW) {
     delay(500);

    while (clearlockbutton == LOW);
    if ((millis()   - SaveTimer) > 4500) {
      
    }
    
    ClearCode();
    
   }

  if ( (long)( millis() - DisplayTimer ) >= 0) {
    DisplayTimer   += DisplayDelay;
    lcd.setCursor(9, 0); 
    lcd.print(Str);
    lcd.print("      ");

  }
}

void ClearCode() {
  
  Pos = 0;
  Str[Pos]   = '\\0';
  lcd.setCursor(0, 0);
  lcd.print("Password:");
  lcd.setCursor(0,   1);
  lcd.print("          ");
  
}

void Unlock() {

  myServo.write(150);
   
}

void Lock() {

  myServo.write(50);

}

Code

arduino

1/* 
2Made by Marco Fusco
3May 20, 2016
4Contact me at: marcofusco111@gmail.com
5*/
6   
7
8#include <LiquidCrystal.h>
9#include <EEPROM.h>
10#include <Servo.h>
11
12int  address = 0;
13static unsigned long SaveTimer;
14static unsigned long SaveDelay  = (30 * 1000); 
15
16
17char CODE[10] = "1234E"; 
18char Str[10]; 
19char  CodeLength = 4;
20int Pos = 0;
21bool Unlocked;
22static unsigned long DisplayTimer;  
23static unsigned long DisplayDelay = 200;
24
25LiquidCrystal lcd(12, 11, 9,  8, 7, 6); 
26
27
28int buttonPin1 = 2;   
29int buttonPin2 = 3;
30int buttonPin3  = 4;
31int buttonPin4 = 5;
32
33int enterbutton = 10; 
34int clearlockbutton  = 13;
35
36Servo myServo;
37
38void setup() {
39
40  myServo.attach(A1);
41  
42  int EEPROMCodeOK = true;
43  for (Pos = 0; Pos <= (CodeLength); Pos++)  {
44    Str[Pos] =  EEPROM.read(Pos);
45    if (!(strrchr("1123456789", Str[Pos])))  { 
46      // not a valid code
47      EEPROMCodeOK = false;
48    }
49  }
50  Pos++;
51  Str[Pos] =  EEPROM.read(Pos); 
52  if (Str[CodeLength + 1] != 'E')  EEPROMCodeOK = false; 
53  if (EEPROMCodeOK) {
54    Str[CodeLength + 2] = '\\0';
55    strncpy(CODE, Str, CodeLength + 1);
56  }
57  ClearCode();
58
59  pinMode(buttonPin1,  INPUT_PULLUP);
60  pinMode(buttonPin2, INPUT_PULLUP);
61  pinMode(buttonPin3,  INPUT_PULLUP);
62  pinMode(buttonPin4, INPUT_PULLUP);
63
64  pinMode(enterbutton,  INPUT_PULLUP);
65  pinMode(clearlockbutton, INPUT_PULLUP);
66
67  lcd.begin(16,  2);
68  lcd.setCursor(0, 0);
69  lcd.print("Hello.");
70  delay(2000);
71  lcd.clear();
72  lcd.setCursor(0, 0);
73  lcd.print("Password:");
74
75  DisplayTimer = millis() + 200;
76}
77
78
79void loop() {
80  
81  Lock();
82  
83  Pos = constrain(Pos, 0, CodeLength);
84
85  int buttonState1 = digitalRead(buttonPin1);  
86  int buttonState2 = digitalRead(buttonPin2);
87  int buttonState3 = digitalRead(buttonPin3);
88  int buttonState4 = digitalRead(buttonPin4);
89
90  int clButtonState = digitalRead(clearlockbutton);
91  int enterButtonState = digitalRead(enterbutton);
92
93  lcd.setCursor(9, 0);
94
95  if (buttonState1 == LOW) {
96    Str[Pos] = '1';
97    Pos++;
98    Str[Pos]  = '\\0';
99    delay(250); 
100    while (digitalRead(buttonPin1) == LOW); 
101
102  }
103
104  else if (buttonState2 == LOW) {
105    Str[Pos] = '2';
106    Pos++;
107    Str[Pos] = '\\0';
108    delay(250); 
109    while (digitalRead(buttonPin2)  == LOW);
110
111  }
112
113  else if (buttonState3 == LOW) {
114    Str[Pos] = '3';
115    Pos++;
116    Str[Pos] = '\\0';
117    delay(250); 
118    while (digitalRead(buttonPin3)  == LOW);
119  }
120
121  else if (buttonState4 == LOW) {
122    Str[Pos] = '4';
123    Pos++;
124    Str[Pos] = '\\0';
125    delay(250); 
126    while (digitalRead(buttonPin4)  == LOW); 
127
128  }
129  else if (enterButtonState == LOW) {
130    Str[Pos] =  'E';
131    Pos++;
132    Str[Pos] = '\\0';
133    delay(250);
134    while (digitalRead(buttonPin1)  == LOW); 
135     if (strcmp (Str,CODE) == 0) {
136      Unlocked = true;
137      lcd.setCursor(0,  0);
138      lcd.print(" Access Granted");
139      delay(2000);
140      lcd.clear();
141      lcd.print("    Unlocked");
142    } 
143    else if (SaveTimer > millis()  && (Pos + 1) == CodeLength) { 
144
145      strcpy(CODE, Str);
146      for (Pos  = 0; Pos <= (CodeLength + 1); Pos++) {
147        EEPROM.write(Pos, Str[Pos]);
148      }
149      lcd.setCursor(0, 0);
150      lcd.print("Saving Code:");
151      lcd.setCursor(0, 1);
152      lcd.print(Str);
153
154      Unlocked = true;
155    }
156
157    else { 
158
159      lcd.clear();
160      lcd.print(" Access  Denied.");
161      delay(2000);
162      lcd.clear();
163      lcd.print("Password:");
164
165    }
166
167    while (Unlocked) {
168      Unlock();
169      if (digitalRead(clearlockbutton)  == LOW) {
170        delay(200);
171        lcd.clear();
172        lcd.print("     Locked");
173        delay(2000);
174        lcd.clear();
175        Unlocked  = false;
176        SaveTimer = millis() + 30000;
177      }
178    }
179    
180    ClearCode();
181
182    
183  }
184
185  else if (clButtonState == LOW) {
186    delay(500);
187
188    while (clearlockbutton == LOW);
189    if ((millis()  - SaveTimer) > 4500) {
190      
191    }
192    
193    ClearCode();
194    
195  }
196
197  if ( (long)( millis() - DisplayTimer ) >= 0) {
198    DisplayTimer  += DisplayDelay;
199    lcd.setCursor(9, 0); 
200    lcd.print(Str);
201    lcd.print("     ");
202
203  }
204}
205
206void ClearCode() {
207  
208  Pos = 0;
209  Str[Pos]  = '\\0';
210  lcd.setCursor(0, 0);
211  lcd.print("Password:");
212  lcd.setCursor(0,  1);
213  lcd.print("          ");
214  
215}
216
217void Unlock() {
218
219  myServo.write(150);
220  
221}
222
223void Lock() {
224
225  myServo.write(50);
226
227}
228
229

/* 
Made by Marco Fusco
May 20, 2016
Contact me at: marcofusco111@gmail.com
*/
   

#include <LiquidCrystal.h>
#include <EEPROM.h>
#include <Servo.h>

int  address = 0;
static unsigned long SaveTimer;
static unsigned long SaveDelay  = (30 * 1000); 


char CODE[10] = "1234E"; 
char Str[10]; 
char  CodeLength = 4;
int Pos = 0;
bool Unlocked;
static unsigned long DisplayTimer;  
static unsigned long DisplayDelay = 200;

LiquidCrystal lcd(12, 11, 9,  8, 7, 6); 


int buttonPin1 = 2;   
int buttonPin2 = 3;
int buttonPin3  = 4;
int buttonPin4 = 5;

int enterbutton = 10; 
int clearlockbutton  = 13;

Servo myServo;

void setup() {

  myServo.attach(A1);
  
  int EEPROMCodeOK = true;
  for (Pos = 0; Pos <= (CodeLength); Pos++)  {
    Str[Pos] =  EEPROM.read(Pos);
    if (!(strrchr("1123456789", Str[Pos])))  { 
      // not a valid code
      EEPROMCodeOK = false;
    }
  }
  Pos++;
  Str[Pos] =  EEPROM.read(Pos); 
  if (Str[CodeLength + 1] != 'E')  EEPROMCodeOK = false; 
  if (EEPROMCodeOK) {
    Str[CodeLength + 2] = '\\0';
    strncpy(CODE, Str, CodeLength + 1);
  }
  ClearCode();

  pinMode(buttonPin1,  INPUT_PULLUP);
  pinMode(buttonPin2, INPUT_PULLUP);
  pinMode(buttonPin3,  INPUT_PULLUP);
  pinMode(buttonPin4, INPUT_PULLUP);

  pinMode(enterbutton,  INPUT_PULLUP);
  pinMode(clearlockbutton, INPUT_PULLUP);

  lcd.begin(16,  2);
  lcd.setCursor(0, 0);
  lcd.print("Hello.");
  delay(2000);
  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("Password:");

  DisplayTimer = millis() + 200;
}


void loop() {
  
  Lock();
  
  Pos = constrain(Pos, 0, CodeLength);

  int buttonState1 = digitalRead(buttonPin1);  
  int buttonState2 = digitalRead(buttonPin2);
  int buttonState3 = digitalRead(buttonPin3);
  int buttonState4 = digitalRead(buttonPin4);

  int clButtonState = digitalRead(clearlockbutton);
  int enterButtonState = digitalRead(enterbutton);

  lcd.setCursor(9, 0);

  if (buttonState1 == LOW) {
    Str[Pos] = '1';
    Pos++;
    Str[Pos]  = '\\0';
    delay(250); 
    while (digitalRead(buttonPin1) == LOW); 

  }

  else if (buttonState2 == LOW) {
    Str[Pos] = '2';
    Pos++;
    Str[Pos] = '\\0';
    delay(250); 
    while (digitalRead(buttonPin2)  == LOW);

  }

  else if (buttonState3 == LOW) {
    Str[Pos] = '3';
    Pos++;
    Str[Pos] = '\\0';
    delay(250); 
    while (digitalRead(buttonPin3)  == LOW);
  }

  else if (buttonState4 == LOW) {
    Str[Pos] = '4';
    Pos++;
    Str[Pos] = '\\0';
    delay(250); 
    while (digitalRead(buttonPin4)  == LOW); 

  }
  else if (enterButtonState == LOW) {
    Str[Pos] =  'E';
    Pos++;
    Str[Pos] = '\\0';
    delay(250);
    while (digitalRead(buttonPin1)  == LOW); 
     if (strcmp (Str,CODE) == 0) {
      Unlocked = true;
      lcd.setCursor(0,  0);
      lcd.print(" Access Granted");
      delay(2000);
      lcd.clear();
      lcd.print("    Unlocked");
    } 
    else if (SaveTimer > millis()  && (Pos + 1) == CodeLength) { 

      strcpy(CODE, Str);
      for (Pos  = 0; Pos <= (CodeLength + 1); Pos++) {
        EEPROM.write(Pos, Str[Pos]);
      }
      lcd.setCursor(0, 0);
      lcd.print("Saving Code:");
      lcd.setCursor(0, 1);
      lcd.print(Str);

      Unlocked = true;
    }

    else { 

      lcd.clear();
      lcd.print(" Access  Denied.");
      delay(2000);
      lcd.clear();
      lcd.print("Password:");

    }

    while (Unlocked) {
      Unlock();
      if (digitalRead(clearlockbutton)  == LOW) {
        delay(200);
        lcd.clear();
        lcd.print("     Locked");
        delay(2000);
        lcd.clear();
        Unlocked  = false;
        SaveTimer = millis() + 30000;
      }
    }
    
    ClearCode();

    
  }

  else if (clButtonState == LOW) {
    delay(500);

    while (clearlockbutton == LOW);
    if ((millis()  - SaveTimer) > 4500) {
      
    }
    
    ClearCode();
    
  }

  if ( (long)( millis() - DisplayTimer ) >= 0) {
    DisplayTimer  += DisplayDelay;
    lcd.setCursor(9, 0); 
    lcd.print(Str);
    lcd.print("     ");

  }
}

void ClearCode() {
  
  Pos = 0;
  Str[Pos]  = '\\0';
  lcd.setCursor(0, 0);
  lcd.print("Password:");
  lcd.setCursor(0,  1);
  lcd.print("          ");
  
}

void Unlock() {

  myServo.write(150);
  
}

void Lock() {

  myServo.write(50);

}

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