I have wired my fingerprint sensor to my Arduino Leanardo as instructed by the adafruit fingerprint sensor library. the problem is the light is on but I cannot for the life of me work out how to enroll fingerprints into it I have tried the enroll code but it just says that the fingerprint sensor isn't being detected :(. if anyone know how to fix this problem please help me.
fyi i have put left wire to gnd then next to to rx and tx respectively and finally the 4th wire to the 5v hole.