I have uploaded in github.com/pbecchi/sensorserver/wiki the detailed description of few application examples:
Example 1 . Measure of the water level in a tank or pool to control a local or remote refilling valve or pump.
Example 2 . Computation of hourly and daily ET0 from Weather Underground meteo data and/or local sensors
Example 3 . Glass house control from in/out Temperature Humidity for watering & climatic control(in preparation)
Any idea for other possible applications? Suggestions are welcome!