Instructions

You can use the following command to query your fingerprint to see if it is
found in your data.
python3 /usr/share/doc/python3-fingerprint/examples/example_search.py
You can see how many fingerprints are currently stored by using the
following command to see:
python3 /usr/share/doc/python3-fingerprint/examples/example_index.py
4. USAGE WITH ARDUINO
4.1 Connection
Fingerprint sensor SBC-TTL
5 V (Red) 5 V
GND (Black) GND
TXD (Yellow) Pin 2
RXD (White) Pin 3
Touch (Green) -
3,3 V (Blue) -
The pin Touch is an output pin, which sends a signal, if a finger has been
placed on the sensor. The sensor can be operated with the 3.3 V pin, but
is then only able to detect whether a finger has been placed on it via the
touch pin and cannot read the fingerprint.
3.3 Usage with the library
If you now execute the following command, you can store a fingerprint.
python3 /usr/share/doc/python3-fingerprint/examples/example_enroll.py