Here's a quick question I hope somebody can shed some light on. I live in a small-ish town in Yorkshire, probably a couple of miles square and was wondering about the feasibility of using these little devices to create a mesh network to extend my home network.

The reason being is that I have lots of Internet connected devices which watch over me whilst I'm in the house, being Quadriplegic it's much more comforting to have a computer watch over my health and do things for me than it is to have a potentially tired, angry and/or bored person doing it. However, that bubble ends as soon as I pass out of Wi-Fi range.

So obviously I would like to extend coverage to cover my smalltown, but everything I've seen so far has been prohibitively expensive. It wouldn't need to have a massive amount of bandwidth available as it would be just me using it, but it would need to be fairly cheap and as near to 100% reliable as possible.

Any insights, questions, comments? TIA

Edited To Add: I've just measured it using Google Earth and I need to cover a circle with an area of about one square kilometre.