Hello i am a student from Belgium and i am making a lcd screen with a finger print lock and when i connect my device to my arduino uno it turns on but when i try to enroll my fingerprint it detect no fingerprint sensor. I cant find what the problem is. I am using the addafruit library for this. i am using the DollaTek Blue Light Optical Fingerprint Reader Sensor Module for Arduino Mega2560 UNO R3
connections
vcc --> 5v
gnd --> gnd
RX --> pin2
TX --> pin3
