I just started playing around with Arduino and try to get things together for a kind of home automation project.
I connected three LM35 to my Arduino and got it all working - fine.
The three sensors all read different values - I'm not surprised
For example they read: 26.2, 26.5 and 27.2
The "guaranteed" accuracy of the LM35 is +-0.5°. Does this mean, that I can get a quite GOOD value (depending on ref. voltage, circuit quality etc) if I can find 2 LM35 which deliver results that are far apart? Would a "very" accurate value be the average of the two sensors in THIS case?
Or ist this just plain nonsense, and +-1 is the best I could get anyway with such cheap setup?
I do not really care for the current project, because I only have to distinguish between very cold, cold, medium, hot and very hot - more or less