Hello,
I've got myself a Davis Vantage Pro, and it has a "Expansion" port on the device,
It uses a serial connection, but it is 3.3v and to my knowledge arduino's RX/TX is 5v.
Is there any way (and how) to communicate between these things ? (With additional chips/things)
http://www.davisnet.com/support/weather/download/VantageSerialProtocolDocs_v230.pdf