I’m hoping someone can help me. I am having trouble getting the Fingerprint sensor GT-511C1R working with my Arduino Uno.
It was working until earlier today but has now stopped responding.
I was able to use the test example sketches to get the LED to blink and also able to register and recognise a fingerprint. Whilst running through the enrol sketch for the second time I was getting an error as it couldn’t see a fingerprint. Now for some reason even the blink sketch isn’t working.
When going into the serial monitor the text below is printed:
FPS - Open
FPS - SEND: “55 AA 01 00 00 00 00 00 01 00 01 01”
This is where it hangs. There should be a third line where it receives a response. This is the exact issue I had with the first device I received which was replaced. This second device worked great until now, around 2 weeks, and the same has now happened.
It is connected correctly with the supply being 5V DC as instructed and the TX RX going through a voltage divider to bring the voltage down to 3.2V.
If anyone can help, or if a moderator could give any advice to try I would appreciate it. This is part of my BEng Hons Dissertation project which I only have a week left on, so my back is up against the wall a little.
Thanks in advance