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First Just making the thing read from the dht would be a great start.
Ok then so I got the software working well reading a dht11, even used the checksum byte all fine.
Till the dht22's came in the post today, plugged one in - checksum error, tried the other one that came today, the same.
Theres obviously a diffo bewteen the dht11 and the dht22.
I'm interested in this since a while ago I started designing a super wizzbang multi-room temperature control system for my son's house (currently shelved), and looked at dht11's as the sensors (additional humidity info seeming appropriately wizzbang). Apart from what's been said above, what's the general consensus on these little blue sweeties? I mean sensors?
Are they reasonably linear? I'm supposing if so I could add/subtract an offset for each one - it only needs to be accurate to within a degree within a fairly narrow range (from around 5 to 20-something degrees I'm guessing). I'm asking because I can't spend much money, but can take plenty of time, and dht11's are cheap.