Sorry for the vagueness, but I am not familiar with the space yet. I know that its 25 acres total and I imagine maximizing distance between sensor points is the ideal, ie: having a sparse net and making it more dense as need arises. I imagine that that's expensive but I'm asking how can I get the most bang for my buck.
Let's say I start with an acre (let's say 1/2km away from the computer) with 2 or 3 sensors - what are my options? I'd like to stay wireless as much as possible but I imagine maybe the sensors could have wires leading the the boards. I'm just hoping to get pointed in the right direction so feel free to give me homework