Drawer Lock

1//2020 Ali_Kilicoglu
2
3
4
5#include <Servo.h>
6Servo servoNesnesi;
7
8#include  <Keypad.h>
9String pasword1="Your password";
10String pasword2="";
11int  p=0;
12
13
14const byte ROWS = 4; //four rows
15const byte COLS = 3; //three  columns
16
17char keys[ROWS][COLS] = {
18  {'1','2','3'},
19  {'4','5','6'},
20  {'7','8','9'},
21  {'*','0','#'}
22};
23byte rowPins[ROWS] = {9, 8, 7, 6};  //connect to the row pinouts of the keypad
24byte colPins[COLS] = {5, 4, 3}; //connect  to the column pinouts of the keypad
25
26//Create an object of keypad
27Keypad  keypad = Keypad( makeKeymap(keys), rowPins, colPins, ROWS, COLS );
28
29void setup(){
30  Serial.begin(9600);
31  #define BUZZERPIN 11
32  
33  servoNesnesi.attach(10);
34  pinMode(BUZZERPIN,OUTPUT);
35
36  servoNesnesi.write(100);//first lock drawer
37
38  Serial.begin(9600); 
39
40}
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44
45
46  
47void loop(){
48    char  key = keypad.getKey();// Read the key
49  
50  // Print if key pressed
51  if  (key){
52
53    Serial.print("Key print : ");
54    Serial.println(key);
55
56    digitalWrite(BUZZERPIN,HIGH);
57    delay(100);
58    digitalWrite(BUZZERPIN,LOW);
59    p = pasword2.length();
60    pasword2+= key;
61    Serial.println(pasword2);
62  }
63  if(pasword2 == pasword1){//if your pasword equal keypad pasword
64      servoNesnesi.write(20);//open  the drawer
65      pasword2="";
66
67  }
68  else if(pasword2 !=pasword1 and  p>= 6){
69
70      digitalWrite(BUZZERPIN,HIGH);
71      pasword2="";
72
73   }
74   if(key == '#'){//for lock the drawer
75     servoNesnesi.write(100);
76     pasword2="";
77
78    
79    }
80
81  }
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