Did someone ever try to make a temperature and humidity sensor using a PIC controler ?
Need a temp of 100 degF. / 38,2 degC and humidity between 50 and 80% . It is for an Egg-incubator. By low humidity it has to add moisture, by high humidity it has to ventilate.
Humidity level depends on temperature, the best way is to use a memory table to check the correct levels.