I am using Veralite (z-wave) for home-automation. I have also a lot window/door sensors (on photo, PT2262, 433mhz) which I would like to link with Veralite. These sensors transmit only (1 time) when door/window is opened. I tried Rfxtrx433 adapter but as of now pt2262 is not yet implemented. I would like to try option with arduino Nano and 433 receiver module. Can you advise which 433 mhz module should I use? It would have to be able to receive from multiple transmitters (not at the same time) and output different addresses to Nano and then on to Veralite.
The very cheap 433MHz from Ebay will work. But be sure to use a receiver with a crystal, not the ones with a coil.
The PT2262 protocol is in a library called RCSwitch.
Those are the ones that I was warning you about (the green plastic with the coil and red lacquer seal on it).
The receiver has a coil to tune the frequency. If that is slightly changed, or something metal is nearby, it is no longer tuned to 433MHz.
It's hard to search for them, but these search words will show a few of them:
Yes, I think so.
They mention "Manchester coding", and I think they mean that the module does not have that coding on board, but it can only achieve 2.4kbps (kilo bits per second) with Manchester coding.
The Manchester coding means that there is good balance between '1' and '0'.
I'm not 100% sure, so you have to try it. Perhaps you could also buy such a very cheap one with a coil for short range testing. It's only a few dollars/euros.
