Fingerprint Based Biometric Voting Machine

Video :-

Circuit Diagram :-

Code :-

//Prateek //www.prateeks.in #include<EEPROM.h> #include<LiquidCrystal.h> LiquidCrystal lcd(12,11,10,9,8,7); #include <Adafruit_Fingerprint.h> uint8_t id; Adafruit_Fingerprint finger = Adafruit_Fingerprint(&Serial); #define enroll 14 #define del 15 #define up 16 #define down 17 #define match 18 #define indVote 6 #define sw1 5 #define sw2 2 #define sw3 3 #define resultsw 4 #define indFinger 7 #define buzzer 6 #define records 25 int vote1,vote2,vote3; int flag; void setup() { delay(1000); pinMode(enroll, INPUT_PULLUP); pinMode(up, INPUT_PULLUP); pinMode(down, INPUT_PULLUP); pinMode(del, INPUT_PULLUP); pinMode(match, INPUT_PULLUP); pinMode(sw1, INPUT_PULLUP); pinMode(sw2, INPUT_PULLUP); pinMode(sw3, INPUT_PULLUP); pinMode(resultsw, INPUT_PULLUP); pinMode(buzzer, OUTPUT); pinMode(indVote, OUTPUT); pinMode(indFinger, OUTPUT); lcd.begin(16,2); if(digitalRead(resultsw) ==0) { for(int i=0;i<records;i++) EEPROM.write(i+10,0xff); EEPROM.write(0,0); EEPROM.write(1,0); EEPROM.write(2,0); lcd.clear(); lcd.print("System Reset"); delay(1000); } lcd.clear(); lcd.print("Voting Machine"); lcd.setCursor(0,1); lcd.print("by Finger Print"); delay(2000); lcd.clear(); lcd.print("JustDoElectronics"); lcd.setCursor(0,1); lcd.print("Prateek"); delay(2000); if(EEPROM.read(0) == 0xff) EEPROM.write(0,0); if(EEPROM.read(1) == 0xff) EEPROM.write(1,0); if(EEPROM.read(1) == 0xff) EEPROM.write(1,0); //finger.begin(57600); Serial.begin(57600); lcd.clear(); lcd.print("Finding Module"); lcd.setCursor(0,1); delay(1000); if (finger.verifyPassword()) { //Serial.println("Found fingerprint sensor!"); lcd.clear(); lcd.print("Found Module "); delay(1000); } else { //Serial.println("Did not find fingerprint sensor :("); lcd.clear(); lcd.print("module not Found"); lcd.setCursor(0,1); lcd.print("Check Connections"); while (1); } lcd.clear(); lcd.setCursor(0,0); lcd.print("Cn1"); lcd.setCursor(4,0); lcd.print("Cn2"); lcd.setCursor(8,0); lcd.print("Cn3"); lcd.setCursor(12,0); lcd.print("Cn4"); lcd.setCursor(0,1); vote1=EEPROM.read(0); lcd.print(vote1); lcd.setCursor(6,1); vote2=EEPROM.read(1); lcd.print(vote2); lcd.setCursor(12,1); vote3=EEPROM.read(2); lcd.print(vote3); delay(2000); } void loop() { lcd.setCursor(0,0); lcd.print("Press Match Key "); lcd.setCursor(0,1); lcd.print("to start system"); digitalWrite(indVote, LOW); digitalWrite(indFinger, LOW); if(digitalRead(match)==0) { digitalWrite(buzzer, HIGH); delay(200); digitalWrite(buzzer, LOW); digitalWrite(indFinger, HIGH); for(int i=0;i<3;i++) { lcd.clear(); lcd.print("Place Finger"); delay(2000); int result=getFingerprintIDez(); if(result>=0) { flag=0; for(int i=0;i<records;i++) { if(result == EEPROM.read(i+10)) { lcd.clear(); lcd.print("Authorised Voter"); lcd.setCursor(0,1); lcd.print("Please Wait...."); delay(1000); Vote(); EEPROM.write(i+10, 0xff); flag=1; return; } } if(flag == 0) { lcd.clear(); lcd.print("Already Voted"); //lcd.setCursor(0,1); //lcd.print("") digitalWrite(buzzer, HIGH); delay(5000); digitalWrite(buzzer, LOW); return; } } } lcd.clear(); } checkKeys(); delay(1000); } void checkKeys() { if(digitalRead(enroll) == 0) { lcd.clear(); lcd.print("Please Wait"); delay(1000); while(digitalRead(enroll) == 0); Enroll(); } else if(digitalRead(del) == 0) { lcd.clear(); lcd.print("Please Wait"); delay(1000); delet(); } } void Enroll() { int count=0; lcd.clear(); lcd.print("Enter Finger ID:"); while(1) { lcd.setCursor(0,1); lcd.print(count); if(digitalRead(up) == 0) { count++; if(count>25) count=0; delay(500); } else if(digitalRead(down) == 0) { count--; if(count<0) count=25; delay(500); } else if(digitalRead(del) == 0) { id=count; getFingerprintEnroll(); for(int i=0;i<records;i++) { if(EEPROM.read(i+10) == 0xff) { EEPROM.write(i+10, id); break; } } return; } else if(digitalRead(enroll) == 0) { return; } } } void delet() { int count=0; lcd.clear(); lcd.print("Enter Finger ID"); while(1) { lcd.setCursor(0,1); lcd.print(count); if(digitalRead(up) == 0) { count++; if(count>25) count=0; delay(500); } else if(digitalRead(down) == 0) { count--; if(count<0) count=25; delay(500); } else if(digitalRead(del) == 0) { id=count; deleteFingerprint(id); for(int i=0;i<records;i++) { if(EEPROM.read(i+10) == id) { EEPROM.write(i+10, 0xff); break; } } return; } else if(digitalRead(enroll) == 0) { return; } } } uint8_t getFingerprintEnroll() { int p = -1; lcd.clear(); lcd.print("finger ID:"); lcd.print(id); lcd.setCursor(0,1); lcd.print("Place Finger"); delay(2000); while (p != FINGERPRINT_OK) { p = finger.getImage(); switch (p) { case FINGERPRINT_OK: //Serial.println("Image taken"); lcd.clear(); lcd.print("Image taken"); break; case FINGERPRINT_NOFINGER: //Serial.println("No Finger"); lcd.clear(); lcd.print("No Finger"); break; case FINGERPRINT_PACKETRECIEVEERR: //Serial.println("Communication error"); lcd.clear(); lcd.print("Comm Error"); break; case FINGERPRINT_IMAGEFAIL: //Serial.println("Imaging error"); lcd.clear(); lcd.print("Imaging Error"); break; default: //Serial.println("Unknown error"); lcd.clear(); lcd.print("Unknown Error"); break; } } // OK success! p = finger.image2Tz(1); switch (p) { case FINGERPRINT_OK: //Serial.println("Image converted"); lcd.clear(); lcd.print("Image converted"); break; case FINGERPRINT_IMAGEMESS: //Serial.println("Image too messy"); lcd.clear(); lcd.print("Image too messy"); return p; case FINGERPRINT_PACKETRECIEVEERR: //Serial.println("Communication error"); lcd.clear(); lcd.print("Comm Error"); return p; case FINGERPRINT_FEATUREFAIL: //Serial.println("Could not find fingerprint features"); lcd.clear(); lcd.print("Feature Not Found"); return p; case FINGERPRINT_INVALIDIMAGE: //Serial.println("Could not find fingerprint features"); lcd.clear(); lcd.print("Feature Not Found"); return p; default: //Serial.println("Unknown error"); lcd.clear(); lcd.print("Unknown Error"); return p; } //Serial.println("Remove finger"); lcd.clear(); lcd.print("Remove Finger"); delay(2000); p = 0; while (p != FINGERPRINT_NOFINGER) { p = finger.getImage(); } //Serial.print("ID "); //Serial.println(id); p = -1; //Serial.println("Place same finger again"); lcd.clear(); lcd.print("Place Finger"); lcd.setCursor(0,1); lcd.print(" Again"); while (p != FINGERPRINT_OK) { p = finger.getImage(); switch (p) { case FINGERPRINT_OK: //Serial.println("Image taken"); break; case FINGERPRINT_NOFINGER: //Serial.print("."); break; case FINGERPRINT_PACKETRECIEVEERR: //Serial.println("Communication error"); break; case FINGERPRINT_IMAGEFAIL: //Serial.println("Imaging error"); break; default: //Serial.println("Unknown error"); return; } } // OK success! p = finger.image2Tz(2); switch (p) { case FINGERPRINT_OK: //Serial.println("Image converted"); break; case FINGERPRINT_IMAGEMESS: //Serial.println("Image too messy"); return p; case FINGERPRINT_PACKETRECIEVEERR: //Serial.println("Communication error"); return p; case FINGERPRINT_FEATUREFAIL: //Serial.println("Could not find fingerprint features"); return p; case FINGERPRINT_INVALIDIMAGE: //Serial.println("Could not find fingerprint features"); return p; default: //Serial.println("Unknown error"); return p; } // OK converted! //Serial.print("Creating model for #"); //Serial.println(id); p = finger.createModel(); if (p == FINGERPRINT_OK) { //Serial.println("Prints matched!"); } else if (p == FINGERPRINT_PACKETRECIEVEERR) { //Serial.println("Communication error"); return p; } else if (p == FINGERPRINT_ENROLLMISMATCH) { //Serial.println("Fingerprints did not match"); return p; } else { //Serial.println("Unknown error"); return p; } //Serial.print("ID "); //Serial.println(id); p = finger.storeModel(id); if (p == FINGERPRINT_OK) { //Serial.println("Stored!"); lcd.clear(); lcd.print("Stored!"); delay(2000); } else if (p == FINGERPRINT_PACKETRECIEVEERR) { //Serial.println("Communication error"); return p; } else if (p == FINGERPRINT_BADLOCATION) { //Serial.println("Could not store in that location"); return p; } else if (p == FINGERPRINT_FLASHERR) { //Serial.println("Error writing to flash"); return p; } else { //Serial.println("Unknown error"); return p; } } int getFingerprintIDez() { uint8_t p = finger.getImage(); if (p != FINGERPRINT_OK) return -1; p = finger.image2Tz(); if (p != FINGERPRINT_OK) return -1; p = finger.fingerFastSearch(); if (p != FINGERPRINT_OK) { lcd.clear(); lcd.print("Finger Not Found"); lcd.setCursor(0,1); lcd.print("Try Later"); delay(2000); return -1; } // found a match! //Serial.print("Found ID #"); //Serial.print(finger.fingerID); return finger.fingerID; } uint8_t deleteFingerprint(uint8_t id) { uint8_t p = -1; lcd.clear(); lcd.print("Please wait"); p = finger.deleteModel(id); if (p == FINGERPRINT_OK) { //Serial.println("Deleted!"); lcd.clear(); lcd.print("Figer Deleted"); lcd.setCursor(0,1); lcd.print("Successfully"); delay(1000); } else { //Serial.print("Something Wrong"); lcd.clear(); lcd.print("Something Wrong"); lcd.setCursor(0,1); lcd.print("Try Again Later"); delay(2000); return p; } } void Vote() { lcd.clear(); lcd.print("Please Place"); lcd.setCursor(0,1); lcd.print("Your Vote"); digitalWrite(indVote, HIGH); digitalWrite(indFinger, LOW); digitalWrite(buzzer, HIGH); delay(500); digitalWrite(buzzer, LOW); delay(1000); while(1) { if(digitalRead(sw1)==0) { vote1++; voteSubmit(1); EEPROM.write(0, vote1); while(digitalRead(sw1)==0); return; } if(digitalRead(sw2)==0) { vote2++; voteSubmit(2); EEPROM.write(1, vote2); while(digitalRead(sw2)==0); return; } if(digitalRead(sw3)==0) { vote3++; voteSubmit(3); EEPROM.write(2, vote3); while(digitalRead(sw3)==0); return; } if(digitalRead(resultsw)==0) { lcd.clear(); lcd.setCursor(0,0); lcd.print("Can1"); lcd.setCursor(6,0); lcd.print("Can2"); lcd.setCursor(12,0); lcd.print("Can3"); for(int i=0;i<3;i++) { lcd.setCursor(i*6,1); lcd.print(EEPROM.read(i)); } delay(2000); int vote=vote1+vote2+vote3; if(vote) { if((vote1 > vote2 && vote1 > vote3)) { lcd.clear(); lcd.print("Can1 Wins"); delay(2000); lcd.clear(); } else if(vote2 > vote1 && vote2 > vote3) { lcd.clear(); lcd.print("Can2 Wins"); delay(2000); lcd.clear(); } else if((vote3 > vote1 && vote3 > vote2)) { lcd.clear(); lcd.print("Can3 Wins"); delay(2000); lcd.clear(); } else { lcd.clear(); lcd.print(" Tie Up Or "); lcd.setCursor(0,1); lcd.print(" No Result "); delay(1000); lcd.clear(); } } else { lcd.clear(); lcd.print("No Voting...."); delay(1000); lcd.clear(); } vote1=0;vote2=0;vote3=0;vote=0; lcd.clear(); return; } } digitalWrite(indVote, LOW); } void voteSubmit(int cn) { lcd.clear(); if(cn == 1) lcd.print("Can1"); else if(cn == 2) lcd.print("Can2"); else if(cn == 3) lcd.print("Can3"); lcd.setCursor(0,1); lcd.print("Vote Submitted"); digitalWrite(buzzer , HIGH); delay(1000); digitalWrite(buzzer, LOW); digitalWrite(indVote, LOW); return; }


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