Solar powered, no battery monitoring of microclimate
This implementation has 1 phone and 1 gadidi board measuring temperature, humidity and light levels. The gadidi board is powered from the phone battery and the phone is topped up by the solar panel. The phone reads the gadidi board, sends data over 3G to the web for plotting and goes to sleep, waking after a time which is dependent on its battery level. This installation made it through 3 months of English winter on the Geography building roof with no extra power source.