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Fingerprint question
Moderators: adafruit_support_bill, adafruit

Please be positive and constructive with your questions and comments.

Re: Fingerprint question

by adafruit_support_rick on Sun Mar 05, 2017 10:03 am

What player? I don't know what you're referring to.

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Re: Fingerprint question

by aclecio_ul on Sun Mar 05, 2017 10:15 am

I made a mistake and changed the baud value uint8_t Adafruit_Fingerprint :: setSysPara (void) {
  Uint8_t packet [] = {0x0e, 0x4,0x1};
For uint8_t packet [] = {0x0e, 4.0};
Is there a possibility to reverse the process?
Sorry about my English.
By BR

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Re: Fingerprint question

by adafruit_support_rick on Sun Mar 05, 2017 8:43 pm

There is not factory reset.
Looks like you set the baud rate to 9600. So, change your sketch to communicate with the sensor at 9600 baud. Then you can talk to the sensor again. You can change the baud rate back to 57600 with the setsyspara command.

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Re: Fingerprint question

by aclecio_ul on Sun Mar 05, 2017 10:53 pm

I tried, but without success. The device cannot verify the password.

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Re: Fingerprint question

by adafruit_support_rick on Mon Mar 06, 2017 10:40 am

You're changing this line to 9600, right?
Code: Select all | TOGGLE FULL SIZE
  // set the data rate for the sensor serial port
  finger.begin(57600);

I think all you can do is try some other baudrates. See if you can find one that works. They will be in increments of 9600

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Re: Fingerprint question

by coniocharles on Wed Mar 15, 2017 11:26 am

Hello,
I Am working on A project,
It's either the User can Input his Fingerprint ID(Or any Unique id based on his fingerprint)
or Scan his finger.
I dont want to enroll the fingerprint since I have an external database.
So my fingerprint would be stored inside that external database.

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Re: Fingerprint question

by adafruit_support_rick on Thu Mar 16, 2017 10:14 am

coniocharles wrote:I dont want to enroll the fingerprint since I have an external database.
So my fingerprint would be stored inside that external database.

The match must take place in the sensor itself. You would have to
1) enroll fingers on the sensor
2) transfer the fingerprint template from the sensor to your database

To match, you would have to
1) transfer your entire template database to the sensor
2) perform the match

Unfortunately, we don't have any examples of doing any of this

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Re: Fingerprint question

by teprojects2 on Sat Mar 18, 2017 3:37 am

Can you please explain me about "INTERFACING OF RFID RC522 WITH ARDUINO"

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Re: Fingerprint question

by aronll on Tue May 30, 2017 5:46 pm

Hello! I have problem with ZFM-60 scanner.
Early I set Baudrate to 19200 (9600*2) and all worked good.
But now I have aa mistake and set baudrate 9600*5 and then scanner dont wont work with Arduino program (dont work any functions, like verifyPassword and other...)
I tryed to pick up need baudrate with 9600 step, but he dont work.
Help me, please(

PS: baudrate in Serial with PC = 115200
I also try to set this num to 57600, 48000 ....

________________________________________________-

All good)
My problem was in old Arduino IDE (I used 1.0.6, in wich this parametres dont work, but in 1.6.5 all good)

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Re: Fingerprint question

by hmxmghl on Mon Jul 17, 2017 7:24 pm

Hello,

@Don

Great work. Just one problem I am facing. I hope you can help. When following your instructions and using modified .cpp and .h files, I get 688 bytes of template. But "enroll.ino" file doesn't work any more. It give error "Unknown Error" after Creating Model ID # 1. Can you please help me with this?

@Rick

Can you suggest a solution too?

Thank you very much in advance.

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Re: Fingerprint question

by adafruit_support_rick on Tue Jul 18, 2017 8:48 am

What version of Arduino are you using?
Do you have the latest version of the fingerprint library?

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Re: Fingerprint question

by hmxmghl on Tue Jul 18, 2017 8:55 am

I have the modified version uploaded by Don which returns full 688 bytes template. It is working perfectly except it gives error while enrolling. Any guesses why?

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Re: Fingerprint question

by adafruit_support_rick on Tue Jul 18, 2017 9:51 am

There was a bug in the library when Don ported it. The bug involved using the incorrect buffer size for the sensor's responses.
You can look at the changes here:
https://github.com/adafruit/Adafruit-Fi ... 83f263ccb6

You'll probably have to incorporate those changes into Don's version

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Re: Fingerprint question

by hmxmghl on Wed Jul 26, 2017 5:48 pm

Thank you very much, Rick. I modified the library as per your suggestion and it worked like a charm.

You are the best. Thanks again :)

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Re: Fingerprint question

by adafruit_support_rick on Thu Jul 27, 2017 10:19 am

No problem!
Can you post a zip of your modified library here in case someone else needs it? Or maybe publish it on github?

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