Did not get any further with the project, apart from getting the pi, had issues sourcing decent batteries for the temp sensors.
Problem was that I needed the set up to be reliable and run without any problems as I would not be around to keep an eye on it.
Better off with mains then no?
I'm lucky (well, sort of; I live in a minuscule 1-bed flat) in that my boiler and router are right next to each other, don't think I'll bother with the separate sensors...
@frankenbike started
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Did not get any further with the project, apart from getting the pi, had issues sourcing decent batteries for the temp sensors.
Problem was that I needed the set up to be reliable and run without any problems as I would not be around to keep an eye on it.