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Fingerprint sfg demo9/3/2023 Since the module uses UART to communicate, you have the choice of choosing the serial port you want. The header file will give an overview of the library and it includes all instructions codes, default values, class declarations, parameters and functions declarations. The library consists of a header file R30X_Fingerprint.h and a CPP file R30X_Fingerprint.cpp. All that is working are demonstrated in the example Arduino sketch. But the basic enrolling, searching and matching functions work. The code is easy to understand and is shared as an open source project. Since the instruction set and confirmation codes are compatible with many versions of the fingerprint scanner, you could easily modify this library to interface a different type. Writing libraries has become an exercise for me. That’s when I decided to write one myself. It was released 7 years ago, it is hard to understand due to lack of documentation and has limited features. The most widely used library for the R30X series modules is the Adafruit Fingerprint Sensor library.
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