I couldn´t use arduino UNO

[adam]

Welcome to Cayenne!

Are you using the .CC IDE or .ORG? I saw a thread before with the .ORG IDE including the SPI library was required. #include <SPI.h>

Sketch fails to find Ethertnet.h

Ah, I also see you are using the .ORG Arduino IDE. We created our libraries based on the .CC Arduino IDE. This is why you had to use the #include <SPI.h> manually in your sketch file I think. There might be additional small hiccups due to the .ORG IDE, so keep us updated if you encounter issues! -B