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DY50 Fingerprint
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DY50 Fingerprint

by aleadsk on Thu Sep 05, 2019 11:34 pm

Hello everyone, I would like to ask you a simple question, I'm a beginner in studying Arduino, I would like to know if using the DY50 biometric sensor (link: https://www.adafruit.com/product/751), I can read the "finger.getImage ()" method and then send the image that I captured to a cloud server, without assining any ID. The idea is that the image that I captured and sent to the server, will be compared to a new one, then I could know if a person is authorized

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Re: DY50 Fingerprint

by adafruit_support_bill on Fri Sep 06, 2019 6:15 am

You can send the image to a server. But that will not accomplish what you are looking for. Matching fingerprints is not as simple as just comparing 2 images - since no 2 images of the same fingerprint will be identical down to the pixel level.

The algorithms in the device analyze the images and identify specific characteristics of the fingerprint. It is these characteristics that are compared. If you want to perform matching at the server, then you will need to implement code to analyze the images and identify unique fingerprint characteristics for comparison.

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Re: DY50 Fingerprint

by aleadsk on Fri Sep 06, 2019 11:30 pm

Thank you for the reply, what do you suggest to make this project in the way that I described? Do you know the algorithms ?

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Re: DY50 Fingerprint

by adafruit_support_bill on Sat Sep 07, 2019 6:35 am

There are a number of open-source fingerprint identification projects out there. I do not have any hands-on experience with them:

https://www.google.com/search?q=fingerp ... ing+algori

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Re: DY50 Fingerprint

by aleadsk on Sun Sep 08, 2019 10:16 pm

thank you for attention

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Re: DY50 Fingerprint

by graghavan007 on Fri Oct 11, 2019 9:32 pm

I am connecting the DY50 to our own low power microcontroller. I am able to connect to the DY50 and able to run multiple commands such as Generate Random Number, Handshake etc.
However, when I run get image, it always return "Cant detect finger" even though I place my finger on it. Do i need to program it with other things such as templates or something before running the Get Image command ? Here is the packet output of the getImage command. Byte 9 (starting from 0 index) is always 0x2 and never returns 0x0 .

0xef 0x1 0xff 0xff 0xff 0xff 0x7 0x0 0x3 0x2 0x0 0xc

Appreciate any pointers. Thanks

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Re: DY50 Fingerprint

by adafruit_support_bill on Sat Oct 12, 2019 5:31 am

@graghavan007 - Please do not double post: viewtopic.php?f=19&t=157425#p776059

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Please be positive and constructive with your questions and comments.