I my project oriented. I need to break things down into their parts.
#1) connectoin
#2) monitoring I/O pins and connected sensors
#3) remote reading of values
#3a) remote sending of data or commands.
At this point, I have no idea of #1)
- The place where my project is , has a very low internet connection
well, it either HAS an internet connection or it does NOT.
this is binary.
if it has a phone-dial-up, then it HAS internet connection.
whether you WANT to use it or not, is up to you.
to connect to things up to 100 meters, you have a lot of options.
over 100 meters, you have very few. use a cell phone for wireless, or use a wired internet connection.
there is lora that can go about 1km so your 100km is only for the first two option.
if you have a farm, and out over the next hill and past the next valley, you have a solar powered pump and want to make sure it is working.......
you can install a sensor with some sort of wireless.
then, at a location where there is power and a still a useable signal, put in a repeater. then, at some next distance, put in a second repeater.
if you have very slow internet, then you are in good shape. the amount of information needed to send or receive is tiny and would not even register on the monthly use.
and, there are cell-phone shields that would allow you to put in a cellular connection.
the