Suggested Reading
Depending on how you are connecting to the fingerprint scanner, you may need to know the following concepts before working with one of these boards:
Hardware Overview
Features
The GT-521F32 and GT-521F52 have a lot in common with the previous models. They have the same protocol commands and packet structure. Code that was implemented
for previous models should be functionally the same. The fingerprint scanner has the ability to:
Enroll a Fingerprint
Identify a Fingerprint
Capable of 360° Recognition
However, there are a few differences in the boards. These include:
Different Board Layout
4x Mounting Holes
2x JST SH Connectors
Touch Interface
One significant difference to keep 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 slightly more expensive but it can hold 3000 fingerprints.
Technical Specs
GT-521F32 / GT-521F52
CPU
ARM Cortex M3 Cortex
Sensor
optical
Window
16.9mm x 12.9mm
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This tutorial covers everything you need to know about through-hole soldering.
Asynchronous serial communication concepts: packets, signal levels, baud rates,
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