├── ArduinoRFIDDoorLock.pde ├── README └── gpl2.txt /ArduinoRFIDDoorLock.pde: -------------------------------------------------------------------------------- 1 | /* 2 | Automatic door opener via RFID and a Servo 3 | Created by: Kristian Lauszus and Thomas Jespersen - TKJ Electronics 4 | Released under the GNU General Public License 5 | Ver. 2 6 | */ 7 | 8 | //Start 9 | #include 10 | #include 11 | 12 | //Initialiser 13 | Servo servoLock; // create servo object to control a servo 14 | // a maximum of eight servo objects can be created 15 | 16 | #define RFID_Enabled_Pin 2 // sets RFID enable pin to pin 2 17 | #define servoPin 3 // sets the servo's pin to pin 3 18 | #define LockedPos 10 //sets locked degrees on servo 19 | #define UnlockedPos 110 //sets unlock degrees om servo 20 | 21 | byte buffer[100]; //used to store the incoming bytes from the RFID 22 | byte RFID_Master[10] = {'1', '7', '0', '0', '7', 'D', 'B', '2', '4', 'F'}; //the master RFID fob (key) to look for 23 | byte RFID_Slave1[10], RFID_Slave2[10], RFID_Slave3[10]; //the varible which stores the slave fobs 24 | byte i; //used to keep track of which bit to write to 25 | byte i2; //used to erase the RFID fob (key) number from the buffer 26 | 27 | boolean DoorLocked; //true if door is locked 28 | 29 | byte checkPosition; //used to check if the incomming number is true or false 30 | boolean RFID_Master_Correct; //true if Master fob is detected , false if not 31 | boolean RFID_Slave1_Correct, RFID_Slave2_Correct, RFID_Slave3_Correct; //true if slave RFID fob (key) is detected, false if not 32 | boolean RFID_SaveNextRead; //true if in programming mode 33 | 34 | void setup() { 35 | pinMode(13, OUTPUT); //enables the diode on the arduino 36 | pinMode(RFID_Enabled_Pin, OUTPUT); //sets the RFID pin to output 37 | RFID_Enable(false); //used to set the status of the RFID reader 38 | EEPROM_Read_Slaves(); //Varible used to read EEPROM 39 | //Lås 40 | PreLock(); //locks the arduino on startup 41 | RFID_Enable(true); //used to set the status of the RFID reader 42 | Serial.begin(2400); //sets baudrate 43 | i = 1; //sets the varible to 1, and thereby skip the start byte (0x0A) 44 | } 45 | //Gå til 46 | //Loop 47 | void loop() { //the main loop 48 | // Seriel data 49 | if (Serial.available()) { //check if the RFID reader sends anything 50 | if (buffer[0] != 0x0A) { //check if it the start bit is 0x0A 51 | buffer[0] = Serial.read(); //write bit to buffer 52 | } else { 53 | //Modtag 54 | buffer[i] = Serial.read(); //write next bit to buffer 55 | if (buffer[i] == 0x0D) { //if end bit is send, disable the RFID reader temporary 56 | Serial.print("RFID Tag scanned: "); 57 | RFID_Enable(false); 58 | RFID_Master_Correct = true; 59 | RFID_Slave1_Correct = true; 60 | RFID_Slave2_Correct = true; 61 | RFID_Slave3_Correct = true; 62 | 63 | //RFID 64 | // We have read all bytes - we are now going to check them 65 | for (checkPosition = 0; checkPosition < 10; checkPosition++) { //Read bit fra 0-9 66 | #if defined(ARDUINO) && ARDUINO >=100 67 | Serial.write(buffer[checkPosition+1]); 68 | #else 69 | Serial.print(buffer[checkPosition+1], BYTE); 70 | #endif 71 | if (buffer[checkPosition+1] == RFID_Slave1[checkPosition] && RFID_Slave1_Correct == true) { // compares the written bits to "RFID1" 72 | RFID_Slave1_Correct = true; //Slave1 RFID tag is detected 73 | } else { 74 | RFID_Slave1_Correct = false; //Slave1 RFID tag is not detected 75 | } 76 | if (buffer[checkPosition+1] == RFID_Slave2[checkPosition] && RFID_Slave2_Correct == true) { // compares the written bits to "RFID2" 77 | RFID_Slave2_Correct = true; //Slave2 RFID tag is detected 78 | } else { 79 | RFID_Slave2_Correct = false; //Slave2 RFID tag is not detected 80 | } 81 | if (buffer[checkPosition+1] == RFID_Slave3[checkPosition] && RFID_Slave3_Correct == true) { // compares the written bits to "RFID3" 82 | RFID_Slave3_Correct = true; //Slave3 RFID tag is detected 83 | } else { 84 | RFID_Slave3_Correct = false; //Slave3 RFID tag is detected 85 | } 86 | //Master 87 | if (buffer[checkPosition+1] == RFID_Master[checkPosition] && RFID_Master_Correct == true) { // compares the written bits to "Master" 88 | RFID_Master_Correct = true; //Master RFID tag is detected 89 | } else { 90 | RFID_Master_Correct = false; //Master RFID tag is detected 91 | } 92 | } 93 | Serial.println(""); 94 | if (RFID_SaveNextRead == false && (RFID_Slave1_Correct == true || RFID_Slave2_Correct == true || RFID_Slave3_Correct == true) && RFID_Master_Correct == false) { //see if the right RFID fob (key) is detected 95 | if (RFID_Slave1_Correct == true) { Serial.println("Slave1 Card Scanned"); } 96 | if (RFID_Slave2_Correct == true) { Serial.println("Slave2 Card Scanned"); } 97 | if (RFID_Slave3_Correct == true) { Serial.println("Slave3 Card Scanned"); } 98 | //Døren 99 | if (DoorLocked == true) { //see if door is locked or not 100 | //Lås op 101 | Serial.print("Unlocking..."); //if the door is locked then unlocked it 102 | Unlock(5); //unlock with 5ms delay 103 | Serial.println(" Unlocked!"); 104 | } else { 105 | //Lås 106 | Serial.print("Locking..."); //if the door is unlocked then lock it 107 | Lock(5); //lock with 5ms delay 108 | Serial.println(" Locked!"); 109 | } 110 | //Vent 111 | delay(1000); // Wait for you to remove the RFID fob (key) 112 | } else if (RFID_Master_Correct == true && RFID_SaveNextRead == false) { // If the Master Card is scanned when not in programming mode 113 | Serial.println("Master Card Scanned - Programming mode Enabled"); 114 | delay(1000); 115 | RFID_SaveNextRead = true; // Enable programming mode 116 | } else if (RFID_Master_Correct == false && RFID_SaveNextRead == true) { // If another card is scanned when in programming mode 117 | // Save the Card 118 | //Ledige 119 | //Gem 120 | if (RFID_Slave1[0] == 0) { // Is the Slave1 Card slot empty? 121 | for (checkPosition = 0; checkPosition < 10; checkPosition++) { //Read bit fra 0-9 122 | RFID_Slave1[checkPosition] = buffer[checkPosition+1]; // Save the scanned card as Slave1 123 | } 124 | Serial.println("RFID Card saved in: Slave1"); 125 | delay(1000); 126 | } else if (RFID_Slave2[0] == 0) { // Is the Slave2 Card slot empty? 127 | for (checkPosition = 0; checkPosition < 10; checkPosition++) { //Read bit fra 0-9 128 | RFID_Slave2[checkPosition] = buffer[checkPosition+1]; // Save the scanned card as Slave2 129 | } 130 | Serial.println("RFID Card saved in: Slave2"); 131 | delay(1000); 132 | } else if (RFID_Slave3[0] == 0) { // Is the Slave3 Card slot empty? 133 | for (checkPosition = 0; checkPosition < 10; checkPosition++) { //Read bit fra 0-9 134 | RFID_Slave3[checkPosition] = buffer[checkPosition+1]; // Save the scanned card as Slave3 135 | } 136 | Serial.println("RFID Card saved in: Slave3"); 137 | delay(1000); 138 | } else { 139 | Serial.println("No free Card slots"); 140 | RFID_Enable(true); //turns on the RFID reader 141 | delay(1000); 142 | RFID_Enable(false); //turns off the RFID reader 143 | delay(1000); 144 | } 145 | EEPROM_Save_Slaves(); 146 | RFID_SaveNextRead = false; 147 | //Master 148 | } else if (RFID_Master_Correct == true && RFID_SaveNextRead == true) { // If the Master Card is scanned when in programming mode 149 | Serial.println("Master Card Scanned again - Removing all saved Cards"); 150 | delay(1000); 151 | //Slet 152 | // Remove all Slave Cards 153 | for (checkPosition = 0; checkPosition < 10; checkPosition++) { //Read bit fra 0-9 154 | RFID_Slave1[checkPosition] = 0; 155 | } 156 | for (checkPosition = 0; checkPosition < 10; checkPosition++) { //Read bit fra 0-9 157 | RFID_Slave2[checkPosition] = 0; 158 | } 159 | for (checkPosition = 0; checkPosition < 10; checkPosition++) { //Read bit fra 0-9 160 | RFID_Slave3[checkPosition] = 0; 161 | } 162 | EEPROM_Save_Slaves(); 163 | RFID_SaveNextRead = false; 164 | } 165 | 166 | RFID_Enable(true); //turns on the RFID reader 167 | EmptySerialBuffer(); //erase the buffer 168 | Serial.println(""); 169 | } 170 | i++; //used in the beginning to write to each bit in the buffer 171 | } 172 | } 173 | //Gå til 174 | } 175 | 176 | 177 | void EmptySerialBuffer() { //replaces all bits in the buffer with zeros 178 | while (Serial.available()) { Serial.read(); } 179 | for (i2 = 0; i2 <= i; i2++) { 180 | buffer[i2] = 0; 181 | } 182 | i = 0; 183 | } 184 | 185 | void PreLock() { 186 | servoLock.attach(servoPin); // attaches the servo on pin 3 to the servo object 187 | servoLock.write(LockedPos); // tell servo to go to position in variable 'LockedPos' 188 | delay(250); // waits 250ms for the servo to reach the position 189 | servoLock.detach(); //detaches the servo, so it's not using power 190 | DoorLocked = true; //the door is locked 191 | } 192 | 193 | void Unlock(byte speedDelay) { 194 | int pos; 195 | servoLock.attach(servoPin); // attaches the servo on pin 3 to the servo object 196 | for(pos = LockedPos; pos < UnlockedPos; pos += 1) // goes from 10 degrees to 110 degrees 197 | { // in steps of 1 degree 198 | servoLock.write(pos); // tell servo to go to position in variable 'pos' 199 | delay(speedDelay); // waits 5ms for the servo to reach the position 200 | } 201 | servoLock.detach(); //detaches the servo, so it's not using power 202 | DoorLocked = false; //the door is unlocked 203 | } 204 | 205 | void Lock(byte speedDelay) { 206 | int pos; 207 | servoLock.attach(servoPin); // attaches the servo on pin 3 to the servo object 208 | for(pos = UnlockedPos; pos > LockedPos; pos -= 1) // goes from 110 degrees to 10 degrees 209 | { // in steps of 1 degree 210 | servoLock.write(pos); // tell servo to go to position in variable 'pos' 211 | delay(speedDelay); // waits 5ms for the servo to reach the position 212 | } 213 | servoLock.detach(); //detaches the servo, so it's not using power 214 | DoorLocked = true; //the door is locked 215 | } 216 | 217 | void RFID_Enable(boolean enabled) { 218 | if (enabled == true) { 219 | digitalWrite(RFID_Enabled_Pin, LOW); //enables the RDIF reader and turns on the diode on the arduino 220 | digitalWrite(13, HIGH); 221 | } else { //disables the RDIF reader and turns off the diode on the arduino 222 | digitalWrite(RFID_Enabled_Pin, HIGH); 223 | digitalWrite(13, LOW); 224 | } 225 | } 226 | 227 | 228 | void EEPROM_Read_Slaves() { 229 | byte EPROMaddr; 230 | for (EPROMaddr = 0; EPROMaddr < 10; EPROMaddr++) { //Read bit from 0-9 231 | RFID_Slave1[EPROMaddr] = EEPROM.read(EPROMaddr); 232 | } 233 | for (EPROMaddr = 10; EPROMaddr < 20; EPROMaddr++) { //Read bit from 0-9 234 | RFID_Slave2[EPROMaddr-10] = EEPROM.read(EPROMaddr); 235 | } 236 | for (EPROMaddr = 20; EPROMaddr < 30; EPROMaddr++) { //Read bit from 0-9 237 | RFID_Slave3[EPROMaddr-20] = EEPROM.read(EPROMaddr); 238 | } 239 | } 240 | 241 | void EEPROM_Save_Slaves() { 242 | byte EPROMaddr; 243 | for (EPROMaddr = 0; EPROMaddr < 10; EPROMaddr++) { //Read bit from 0-9 244 | EEPROM.write(EPROMaddr, RFID_Slave1[EPROMaddr]); 245 | } 246 | for (EPROMaddr = 10; EPROMaddr < 20; EPROMaddr++) { //Read bit from 0-9 247 | EEPROM.write(EPROMaddr, RFID_Slave2[EPROMaddr-10]); 248 | } 249 | for (EPROMaddr = 20; EPROMaddr < 30; EPROMaddr++) { //Read bit from 0-9 250 | EEPROM.write(EPROMaddr, RFID_Slave3[EPROMaddr-20]); 251 | } 252 | } 253 | -------------------------------------------------------------------------------- /README: -------------------------------------------------------------------------------- 1 | The code is released under the GNU General Public License. 2 | 3 | This is our code for our RFID door lock created 2011. 4 | 5 | For more information see my blog post: http://blog.tkjelectronics.dk/2011/04/arduino-rfid-door-lock/ or send us an email at support@tkjelectronics.dk. -------------------------------------------------------------------------------- /gpl2.txt: -------------------------------------------------------------------------------- 1 | GNU GENERAL PUBLIC LICENSE 2 | Version 2, June 1991 3 | 4 | Copyright (C) 1989, 1991 Free Software Foundation, Inc. 5 | 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 6 | Everyone is permitted to copy and distribute verbatim copies 7 | of this license document, but changing it is not allowed. 8 | 9 | Preamble 10 | 11 | The licenses for most software are designed to take away your 12 | freedom to share and change it. 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