I mean showing multiple graphics screens, like a screen for temperature and humidity info, a screen for soil info and a screen for an overview 
And temperature and humidity gets updated every x minutes, and the soil info only daily.
i want to have a button on those two screens to update the values and the last time it refreshed.
Also an overview with a clock on it, so that needs to update every second...
Somehow, this seems to be very difficult for me, especially following the tutorial on Google Code Archive - Long-term storage for Google Code Project Hosting.
Do you have any tips and pointers?