@Pingi are you still using 19200 as the serial speed? If so, could you try some other settings there, up to 115200?

@Pingi that's definitely better than the last one!

Just to step back from everything and clear things a little, if you guys need to troubleshoot I'd recommend going via the elechouse manual from ~page 5. Once you've verified that it is hooked up correctly and is functioning with the example code then you have a known point to work forward from.

http://www.elechouse.com/elechouse/images/product/PN532_module_V3/PN532_ Manual_V3.pdf

@three-west The ring is completely self-contained and doesn't require anything other than a contactless payment terminal to work its magic.

@Javier ah, ok.
It seems like you're not getting anything back at all from the PN532 module to indicate that communication with the arduino has started, so there's definitely an issue there of some sort. Whether it's programming, the wiring or the clone arduino is tricky to say (especially over the internet without seeing things in front of me).

@Javier, glad you're back.
I've fixed the code insertion, if you "edit" your post you'll see what I've done with the three backticks at the start and end of the code there.

Have you got the libraries installed on your computer properly? These are the ones I use, they're for the module.

https://github.com/elechouse/PN532

Make sure that you follow these instructions, they're on the front page of the github:

Getting Started

Download zip file and extract the three folders(PN532, PN532_SPI, PN532_HSU and PN532_I2C) into libraries of Arduino.
Downlaod Don's NDEF library and extract it into libraries of Arduino's into a new folder called "NDEF" (Note if you leave this folder as NDEF-Master Arduino will not be able to use it as a library)
Follow the examples of the PN532 library

@zafod no worries. Just make sure that you've extracted the libraries correctly (it was a couple of windows installs ago for me now, but there was difficulty in placing/extracting directories with one of the library sets).
Then maybe try it with my dodgy bit of code, just to see what happens - that will still let you view output from the reader the same way.

@Pingi No worries. With mine, the power led is on when power is applied, no matter whether data is hooked up or not.

What code and libraries are you guys using to try to make it happen?

Howdy - you can do all these things if the protocols used with the apartment gate and work door are the same as those used by the ring. This isn't always possible as some versions of wireless card use different frequencies for communication, and so you're going to have to look into it a little yourself.
As things stand, you can get a compatible apartment door lock and you can unlock your phone with the 2016 ring which doesn't do payments. At the moment I'm not able to say whether the new payment ring will allow these things because I haven't had one for testing.
Perhaps @johnyma22 can weigh in on this.
I don't think that you'll be able to use the new payment ring for the gate or the work door, but I could be completely wrong on this.

Hi @Pingi , what you've got there so far all looks correct physically, but the fact that the power light isn't coming on is interesting - it definitely should when power is connected, regardless of what is running on the code side of things.
You might need to double check all that, possibly use a multimeter to make sure that you're actually getting power at the reader unit.