R301T fingerprint sensor

Other Hardware Sensors
1

Hi guys!

Yesterday I received this sensor but all my attempts make it work were unsuccessful.

I found datasheet about this module here: https://www.openhacks.com/uploadsproductos/r301t_fingerprint_module_user_manual.pdf

And found the article here: https://wikidiys.com/fingerprint-using-arduino/

Also, I tried to use TTL level converter for TX and RX ports, but unfortunately without a result.

Function Adafruit_Fingerprint::verifyPassword() always return false.

The documentation says that this module has LEDs, but it does not glow when I power it.
And I don't know it should be glow?

I will be very appreciated for help.

2

Also, I tried to use TTL level converter for TX and RX ports, but unfortunately without a result.

Why? The UNO uses 5V levels as the fingerprint sensor does.

Post a wiring diagram of your setup (may be hand-drawn)!

Post the code you used so far (don't forget the code tags)!