I have an emonTH outside the house in a birdbox and I have been taking external temperature and humidity readings for more than half a year now just fine. Recently I think however the humidity readings are starting to go wrong (temperature is fine though). I have a Nest in the house that measures the indoor humidity and I always see that the EmonTH sensor and the Nest are always going in the same diretion (about a 10%RH difference usually indoor and outdoor but sympathetic) so I know when the sensor is giving sensible numbers. Recently though I look at the data and I see a lot of readings at 600% and then 0%, and this week in particular it’s reading between 80-100% constantly when it should be around 70%.
Have I done something wrong or does it need calibration or is the humidity chip faulty?Any ideas on things I can try, like buying just a new humidity sensor and swapping it over…?