I was lucky and now I’m the owner of an used Ethernet shield for the Arduino platform. Those shields are expensive. An Arduino Uno costs around CHF 28, an Ethernet shield is CHF 60…summa summarum (inlc. shipment) CHF 94. That’s a lot of money for having some fun on a couple of evenings. So far I prefered using the Arduino attached over USB because this way there is power and a serial connection.
Let’s see what kind of stuff will come up with the Ethernet shield.