If for some reason you really need to know when a cat or other animal has made a waste deposit in a certain place - this is the project for you. Arduino forum member Mastino created a system that monitors methane levels in his cat box, and when they reach a certain level the system tweets the status to its' own account. If you don't have a cat, don't despair - this project provides the framework for monitoring variables and sending results via twitter - so you can use it for all sorts of tasks.
For the sketch and notes, login to the Arduino forum. And for more, we're on twitter and Google+, so follow us for news and product updates as well.
To get started with your own web-enabled projects, use our Freetronics EtherTen - theArduino Uno-compatible with onboard Ethernet, microSD socket and optional PoE:
... or for more program space, I/O ports consider the Freetronics EtherMega - the Arduino Mega2560-compatible with onboard Ethernet, microSD socket and optional PoE:
