R307 Fingerprint not registering

Arduino and Raspberry Pi

I have been trying to connect my R307 fingerprint module but everytime the source code runs it displays that module not found check connection whereas all my connection is alright.I need help regarding it the sorce code is:

#include<EEPROM.h>
#include<LiquidCrystal.h>
LiquidCrystal lcd(13,12,11,10,9,8);

#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 4
#define sw3 3
#define resultsw 2
#define indFinger 7
#define buzzer 19
#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("Master Thesis");
lcd.setCursor(0,1);
lcd.print("Gourab Karmakar");
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;
}

Hiro_Hamada

Permalink

The module might be damaged

If you are sure that the connection is correct then there are chances your module is damaged. The R307 module communicates using TTL UART, so if you have a FTDI board you can try communicating with it to check for any response. If you get nothing then probably the sensor board is dead

Joined April 17, 2018 120
Tuesday at 07:57 AM

Debasis Parida

Permalink

Fingerprint module problem

verify the serial communication pin connections of FPS with Arduino, cross check the transmitter pin of FPS is connected to RX of Arduino and viceversa.If still error persists,then module is most likely damaged.

Joined August 22, 2019 125
Thursday at 12:29 PM

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