Interfacing Fingerprint Sensors with Arduino (Includes Code)
The fingerprint sensor is a widely used sensing element. This project takes the R502/R503 capacitive fingerprint sensor as an example to demonstrate how to enroll and detect fingerprints using the Arduino development board. The project BOM list is as follows: Arduino development board 1, fingerprint sensor R503 1, Dupont wires 20, breadboard 1.
Understanding Capacitive Fingerprint Sensors
Unlike optical fingerprint sensors that create fingerprint images, capacitive products use an array of micro-capacitive circuits to collect data. When a finger presses against the