I know that there is a love/hate relationship with these, however I used them for various projects. Since they are discontinued and it seems sold out everywhere, what options do I have left? I need presence detection that can run off of 12vdc. Nothing cloud, phone, or GPS based.
I have seen this mentioned a few times. But haven't been able to find a good write up on how to do this. I have zero experience with Xbee but willing to learn if someone can point me to what I need to do.