Door lock system with Arduino and RFID Module!

1//Including Libraries
2#include <SPI.h> //SPI Library
3#include <Wire.h>  //Include the Wire Library
4#include <MFRC522.h> //Library of the RFID Module
5#include  <Stepper.h> //Library for the Stepper Motor
6#include <Adafruit_GFX.h> //Library  for the OLED Display
7#include <Adafruit_SSD1306.h> //Library for the OLED Display
8Adafruit_SSD1306  display = Adafruit_SSD1306(); //Creates an object "display", the OLED Display
9//Pins  used by the RFID Module
10#define SS_PIN 10
11#define RST_PIN 9
12//LED pins
13int  ledr = 6;
14int ledg = 7;
15char st[20];
16MFRC522 mfrc522(SS_PIN, RST_PIN);  //Creates an object "mfrc522", the RFID Module
17Stepper myStepper(500, 2, 4,  3, 5); //Creates an object "myStepper", the Stepper motor
18void setup() {
19  myStepper.setSpeed(60); //Sets Stepper motor speed
20  SPI.begin(); //Starts  the SPI Library
21  mfrc522.PCD_Init(); //Starts the RFID Module
22  Wire.begin();  //Starts the Wire library
23  display.begin(SSD1306_SWITCHCAPVCC, 0x3C); //Starts  the display
24  display.setTextColor(WHITE); //Sets the text color
25  display.setTextSize(1);  //Sets the text size
26  display.clearDisplay(); //Clears the display
27  //Defining  LEDs as output
28  pinMode(ledr, OUTPUT);
29  pinMode(ledg, OUTPUT);
30}
31void  loop() {
32  display.clearDisplay();
33  display.setCursor(5, 1); //Sets the cursor  position
34  display.print("Approach the TAG"); //Prints the message
35  digitalWrite(ledr,  HIGH); //Red LED is on
36  if ( ! mfrc522.PICC_IsNewCardPresent()) { //RFID module  searches for new TAGs
37    return;
38  }
39  if ( ! mfrc522.PICC_ReadCardSerial())  { //Reads the TAG
40    return;
41  }
42  //Decoding the TAG code
43  String  content = "";
44  byte letra;
45  for (byte i = 0; i < mfrc522.uid.size; i++)
46  {
47    content.concat(String(mfrc522.uid.uidByte[i] < 0x10 ? " 0" : " "));
48    content.concat(String(mfrc522.uid.uidByte[i], HEX));
49  }
50  content.toUpperCase();  //Converts the text to upper case
51  //The locker system
52  if (content.substring(1)  == "13 FE 51 3D") { //Change here by the code of your TAG
53    display.clearDisplay();
54    display.setCursor(10, 1);
55    display.print("Authorized access"); //Shows  a message on display
56    display.display();
57    digitalWrite(ledr, LOW);
58    digitalWrite(ledg, HIGH); //Green LED turns on
59    myStepper.step(-512);  //Stepper motor moves
60    delay(5000);
61    display.clearDisplay();
62    display.setCursor(10,  1);
63    display.print("Approach the TAG"); 
64    display.display();
65    digitalWrite(ledr,  HIGH); //Red LED turns on again
66    digitalWrite(ledg, LOW);
67    myStepper.step(512);  //Stepper motor moves
68  }
69  //Acess denied
70  else if (content.substring(1)  != "13 FE 51 3D") {//Change here too
71    display.clearDisplay();
72    display.setCursor(10,  1);
73    display.print("Access denied");
74    display.display();
75    delay(500);
76    display.clearDisplay();
77    display.setCursor(10, 1);
78    display.print("Approach  the TAG");
79    display.display();
80  }
81}

1#define SS_PIN 10 
2#define RST_PIN 9
3 
4MFRC522 rfid(SS_PIN, RST_PIN);  
5 
6void setup() {
7  Serial.begin(9600); 
8  SPI.begin(); 
9  rfid.PCD_Init();  
10}
11 
12void loop() {
13  if (!rfid.PICC_IsNewCardPresent() || !rfid.PICC_ReadCardSerial())  
14    return; 
15  String content = "";
16  byte letra;
17  for (byte i =  0; i < rfid.uid.size; i++)
18  {
19    content.concat(String(rfid.uid.uidByte[i]  < 0x10 ? " 0" : " "));
20    content.concat(String(rfid.uid.uidByte[i], HEX));
21  }
22  content.toUpperCase(); //Converts the text to upper case
23
24 
25  Serial.print("TAG  CODE: "); 
26  Serial.println(content); 
27 
28  rfid.PICC_HaltA(); 
29  rfid.PCD_StopCrypto1();
30}

1//Including Libraries
2#include <SPI.h> //SPI Library
3#include <Wire.h>
4  //Include the Wire Library
5#include <MFRC522.h> //Library of the RFID Module
6#include
7  <Stepper.h> //Library for the Stepper Motor
8#include <Adafruit_GFX.h> //Library
9  for the OLED Display
10#include <Adafruit_SSD1306.h> //Library for the OLED Display
11Adafruit_SSD1306
12  display = Adafruit_SSD1306(); //Creates an object "display", the OLED Display
13//Pins
14  used by the RFID Module
15#define SS_PIN 10
16#define RST_PIN 9
17//LED pins
18int
19  ledr = 6;
20int ledg = 7;
21char st[20];
22MFRC522 mfrc522(SS_PIN, RST_PIN);
23  //Creates an object "mfrc522", the RFID Module
24Stepper myStepper(500, 2, 4,
25  3, 5); //Creates an object "myStepper", the Stepper motor
26void setup() {
27
28  myStepper.setSpeed(60); //Sets Stepper motor speed
29  SPI.begin(); //Starts
30  the SPI Library
31  mfrc522.PCD_Init(); //Starts the RFID Module
32  Wire.begin();
33  //Starts the Wire library
34  display.begin(SSD1306_SWITCHCAPVCC, 0x3C); //Starts
35  the display
36  display.setTextColor(WHITE); //Sets the text color
37  display.setTextSize(1);
38  //Sets the text size
39  display.clearDisplay(); //Clears the display
40  //Defining
41  LEDs as output
42  pinMode(ledr, OUTPUT);
43  pinMode(ledg, OUTPUT);
44}
45void
46  loop() {
47  display.clearDisplay();
48  display.setCursor(5, 1); //Sets the cursor
49  position
50  display.print("Approach the TAG"); //Prints the message
51  digitalWrite(ledr,
52  HIGH); //Red LED is on
53  if ( ! mfrc522.PICC_IsNewCardPresent()) { //RFID module
54  searches for new TAGs
55    return;
56  }
57  if ( ! mfrc522.PICC_ReadCardSerial())
58  { //Reads the TAG
59    return;
60  }
61  //Decoding the TAG code
62  String
63  content = "";
64  byte letra;
65  for (byte i = 0; i < mfrc522.uid.size; i++)
66
67  {
68    content.concat(String(mfrc522.uid.uidByte[i] < 0x10 ? " 0" : " "));
69
70    content.concat(String(mfrc522.uid.uidByte[i], HEX));
71  }
72  content.toUpperCase();
73  //Converts the text to upper case
74  //The locker system
75  if (content.substring(1)
76  == "13 FE 51 3D") { //Change here by the code of your TAG
77    display.clearDisplay();
78
79    display.setCursor(10, 1);
80    display.print("Authorized access"); //Shows
81  a message on display
82    display.display();
83    digitalWrite(ledr, LOW);
84
85    digitalWrite(ledg, HIGH); //Green LED turns on
86    myStepper.step(-512);
87  //Stepper motor moves
88    delay(5000);
89    display.clearDisplay();
90    display.setCursor(10,
91  1);
92    display.print("Approach the TAG"); 
93    display.display();
94    digitalWrite(ledr,
95  HIGH); //Red LED turns on again
96    digitalWrite(ledg, LOW);
97    myStepper.step(512);
98  //Stepper motor moves
99  }
100  //Acess denied
101  else if (content.substring(1)
102  != "13 FE 51 3D") {//Change here too
103    display.clearDisplay();
104    display.setCursor(10,
105  1);
106    display.print("Access denied");
107    display.display();
108    delay(500);
109
110    display.clearDisplay();
111    display.setCursor(10, 1);
112    display.print("Approach
113  the TAG");
114    display.display();
115  }
116}