  The present paper describes a novel Raspberry Pi and Arduino UNO architecture
used as a meteorological station. One of the advantages of the proposed
architecture is the huge quantity of sensors developed for its usage;
practically one can find them for any application, and weather sensing is not
an exception. The principle followed is to configure Raspberry as a collector
for measures obtained from Arduino, transmitting occurs via USB; meanwhile,
Raspberry broadcasts them via a web page. For such activity is possible thanks
to Raspbian, a Linux-based operating system. It has a lot of libraries and
resources available, among them Apache Web Server, that gives the possibility
to host a web-page. On it, the user can observe temperature, humidity, solar
radiance, and wind speed and direction. Information on the web-page is
refreshed each five minute; however, measurements arrive at Raspberry every ten
seconds. This low refreshment rate was determined because weather variables
normally do not abruptly change. As an additional feature, system stores all
information on the log file, this gives the possibility for future analysis and
processing.
