A common hacker upgrade to an espresso machine is to improve stability and performance with a better temperature controller, but [Schematix]’s Smart Coffee ... It runs on an Arduino MEGA 2560 ...

In this case, [Boris Landoni] is using an Arduino along with an RS232 shield and an Ethernet shield. The weather station, a La Crosse WS23xx series, already has an RS232 serial port for grabbing ...