Sparkfun Electronics GT-521F Series Hook-Up Manual Download | Manualshive

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Fingerprint Scanner (GT-521Fxx) Hookup Guide

Introduction

Note: This tutorial is for the GT-521Fxx models. If you are using any of the previous models (i.e. GT-511C1R and GT-511C3), please refer to the older Fingerprint
Scanner Hookup Guide.

Have you ever wanted to add fingerprint identification to your project? SparkFun offers a fingerprint scanner from ADH T ech designed to do just that! The GT-521F32 and GT-
521F52 includes an optical sensor for reading fingerprints and a processing IC with built-in fingerprint algorithms. Here you will find information about connecting the
fingerprint scanner and how to use it with Hawley’s FPS_GT511C3 library.

Fingerprint Scanner - TTL (GT-521F32)

SEN-14518

Fingerprint Scanner - TTL (GT-521F52)

SEN-14585

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Summary of Contents for GT-521F Series

Page 1: ...erprint identification to your project SparkFun offers a fingerprint scanner from ADH Tech designed to do just that The GT 521F32 and GT 521F52 includes an optical sensor for reading fingerprints and...

Page 2: ...ep in mind when integrating the fingerprint scanner in a project is the number of fingerprints that the device can hold The GT 521F32 costs less but it can hold only 200 fingerprints The GT 521F52 is...

Page 3: ...here is a marking next to the JST SH connector that indicates polarity The JST SH connector breaks out the pins for serial UART and power While the input voltage is between 3 3V and 6V the UART s logi...

Page 4: ...andards for colored cables For example the red wire in this circuit connects Rx to Tx Double check your connections before powering the scanner Option 2 Making a Custom Adapter If you are using the JS...

Page 5: ...he LV side to power the low side of the logic level converters After wiring the circuit it should look like this Option 2 Voltage Division w 3x 10kOhm Resistors Otherwise you could use 3x 10kOhm resis...

Page 6: ...other models To use the demo SDK on a computer 1 Download the SDK_DEMO exe from the product page under the Documents tab 2 Unzip the folder 3 Go to the directory that it was unzipped which should look...

Page 7: ...nd that the finger is placed in the same position during enrollment The template will have a number associated with the fingerprint scanner and it will be saved in its local database Identifying After...

Page 8: ...onnections are correct and the scanner is able to send receive commands The code sets up a the Arduino s hardware serial UART for debugging and tells the scanner to send serial debug messages The code...

Page 9: ...z FioV3 etc you would need to re configure the software serial pin definitions and adjust the connections Not all the pins can support change interrupts for a serial Rx pin depending on what Arduino m...

Page 10: ...perly since it did not have a lot of details I continued to test the drawing in test 1 to see when the scanner would accept the drawing Test 2 was successful in enrolling and identifying by adding a l...

Page 11: ...ner not recognizing your fingers when enrolling There can be issues trying to enroll when using the SDK_Demo exe or Arduino example code This is usually due to fingers being dry and not having good co...

Page 12: ...irectly to the USB port of your computer The image and table below shows the pinout Fingerprint Scanner USB Port Shield right most pin USB Shield not necessary if using a USB breakout board Tied to GN...

Page 13: ...management of a database on multiple fingerprint scanners from one server Node js There s an example in Node js with an API I have not tested this feature before but try looking at this GitHub reposi...

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